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GE L30 Instruction Manual

Line current differential system ur series.
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GE
Grid Solutions
GE Grid Solutions
650 Markland Street
Markham, Ontario
Canada L6C 0M1
Tel: +1 905 927 7070 Fax: +1 905 927 5098
Internet:
http://www.GEGridSolutions.com
*1601-9050-AA5*
L30 Line Current Differential
UR Series Instruction Manual
Manual P/N: 1601-9050-AA5 (GEK-119562D)
IND.CONT. EQ.
System
L30 revision: 7.2x
831776A2.CDR
E83849
LISTED
52TL
GE Multilin's Quality Management
System is registered to ISO
9001:2008
QMI # 005094
UL # A3775

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   Summary of Contents for GE L30

  • Page 1 Grid Solutions L30 Line Current Differential System UR Series Instruction Manual L30 revision: 7.2x Manual P/N: 1601-9050-AA5 (GEK-119562D) 831776A2.CDR E83849 GE Grid Solutions LISTED 650 Markland Street IND.CONT. EQ. 52TL Markham, Ontario GE Multilin's Quality Management Canada L6C 0M1 System is registered to ISO...
  • Page 2 The contents of this manual are the property of GE Multilin Inc. This documentation is furnished on license and may not be reproduced in whole or in part without the permission of GE Multilin. The content of this manual is for informational use only and is subject to change without notice.
  • Page 3: Table Of Contents

    1.3 ENERVISTA UR SETUP SOFTWARE 1.3.1 SYSTEM REQUIREMENTS ................1-5 1.3.2 INSTALLATION....................1-5 1.3.3 CONFIGURING THE L30 FOR SOFTWARE ACCESS........1-6 1.3.4 USING THE QUICK CONNECT FEATURE............1-9 1.3.5 CONNECTING TO THE L30 RELAY ............... 1-14 1.3.6 SETTING UP CYBERSENTRY AND CHANGING DEFAULT PASSWORD ... 1-15 1.4 UR HARDWARE...
  • Page 4 5.2 PRODUCT SETUP 5.2.1 SECURITY......................5-8 5.2.2 DISPLAY PROPERTIES ..................5-24 5.2.3 CLEAR RELAY RECORDS ................5-25 5.2.4 COMMUNICATIONS ..................5-27 5.2.5 MODBUS USER MAP ..................5-64 5.2.6 REAL TIME CLOCK ..................5-64 5.2.7 FAULT REPORTS ....................5-69 5.2.8 OSCILLOGRAPHY ...................5-71 L30 Line Current Differential System GE Multilin...
  • Page 5 5.8.7 REMOTE DOUBLE-POINT STATUS INPUTS ..........5-253 5.8.8 REMOTE OUTPUTS..................5-253 5.8.9 DIRECT INPUTS AND OUTPUTS ..............5-254 5.8.10 RESETTING....................5-256 5.8.11 IEC 61850 GOOSE ANALOGS..............5-256 5.8.12 IEC 61850 GOOSE INTEGERS..............5-257 GE Multilin L30 Line Current Differential System...
  • Page 6 6.5 PRODUCT INFORMATION 6.5.1 MODEL INFORMATION ...................6-26 6.5.2 FIRMWARE REVISIONS..................6-26 7. COMMANDS AND 7.1 COMMANDS TARGETS 7.1.1 COMMANDS MENU ...................7-1 7.1.2 VIRTUAL INPUTS ....................7-1 7.1.3 CLEAR RECORDS .....................7-2 7.1.4 SET DATE AND TIME ..................7-2 L30 Line Current Differential System GE Multilin...
  • Page 7 COMPENSATION METHOD 1 ................9-7 9.3.3 COMPENSATION METHOD 2 ................9-8 9.3.4 COMPENSATION METHOD 3 ................9-8 9.4 INSTANTANEOUS ELEMENTS 9.4.1 INSTANTANEOUS ELEMENT ERROR DURING L30 SYNCHRONIZATION. 9-10 10. COMMISSIONING 10.1 TESTING 10.1.1 CHANNEL TESTING ..................10-1 10.1.2 CLOCK SYNCHRONIZATION TESTS ............10-2 10.1.3...
  • Page 8 GGIO3: DIGITAL STATUS AND ANALOG VALUES FROM GOOSE DATA ..C-3 C.2.5 GGIO4: GENERIC ANALOG MEASURED VALUES......... C-3 C.2.6 MMXU: ANALOG MEASURED VALUES ............C-4 C.2.7 PROTECTION AND OTHER LOGICAL NODES..........C-4 viii L30 Line Current Differential System GE Multilin...
  • Page 9 BINARY INPUT POINTS..................F-8 F.2.2 BINARY AND CONTROL RELAY OUTPUT ............F-9 F.2.3 COUNTERS ..................... F-10 F.2.4 ANALOG INPUTS .................... F-11 G. RADIUS SERVER G.1 RADIUS SERVER CONFIGURATION G.1.1 RADIUS SERVER CONFIGURATION.............. G-1 GE Multilin L30 Line Current Differential System...
  • Page 10 TABLE OF CONTENTS H. MISCELLANEOUS H.1 CHANGE NOTES H.1.1 REVISION HISTORY..................H-1 H.1.2 CHANGES TO THE L30 MANUAL ..............H-1 H.2 ABBREVIATIONS H.2.1 STANDARD ABBREVIATIONS ................. H-6 H.3 WARRANTY H.3.1 GE MULTILIN WARRANTY................H-9 L30 Line Current Differential System GE Multilin...
  • Page 11: Getting Started

    1.1 IMPORTANT PROCEDURES 1 GETTING STARTED 1.1IMPORTANT PROCEDURES Use this chapter for initial setup of your new L30 Line Current Differential System. 1.1.1 CAUTIONS AND WARNINGS Before attempting to install or use the device, review all safety indicators in this document to help prevent injury, equipment damage, or downtime.
  • Page 12: Inspection Procedure

    • GE EnerVista™ DVD (includes the EnerVista UR Setup software and manuals in PDF format) • Mounting screws If there is any noticeable physical damage, or any of the contents listed are missing, contact GE Grid Solutions as fol- lows.
  • Page 13: Ur Overview

    1.2UR OVERVIEW 1.2.1 INTRODUCTION TO THE UR The GE Universal Relay (UR) series is a new generation of digital, modular, and multifunction equipment that is easily incorporated into automation systems, at both the station and enterprise levels. 1.2.2 HARDWARE ARCHITECTURE...
  • Page 14: Software Architecture

    Employing OOD/OOP in the software architecture of the L30 achieves the same features as the hardware architecture: modularity, scalability, and flexibility. The application software for any UR-series device (for example, feeder protection, transformer protection, distance protection) is constructed by combining objects from the various functional classes.
  • Page 15: Enervista Ur Setup Software

    Ethernet port of the same type as one of the UR CPU ports or a LAN connection to the UR • Internet access or a DVD drive The following qualified modems have been tested to be compatible with the L30 and the EnerVista UR Setup software: • US Robotics external 56K FaxModem 5686 •...
  • Page 16: Configuring The L30 For Software Access

    To configure the L30 for remote access via the rear Ethernet port, see the Configuring Ethernet Communications sec- tion. • To configure the L30 for local access with a computer through either the front RS232 port or rear Ethernet port, see the Using the Quick Connect Feature section. L30 Line Current Differential System...
  • Page 17 CONFIGURING SERIAL COMMUNICATIONS A computer with an RS232 port and a serial cable is required. To use the RS485 port at the back of the relay, a GE Multilin F485 converter (or compatible RS232-to-RS485 converter) is required. See the F485 instruction manual for details.
  • Page 18 MODBUS PROTOCOL 21. Click the Read Order Code button to connect to the L30 device and upload the order code. If an communications error occurs, ensure that the three EnerVista UR Setup values entered in the previous steps correspond to the relay setting values.
  • Page 19: Using The Quick Connect Feature

    USING QUICK CONNECT VIA THE REAR ETHERNET PORTS To use the Quick Connect feature to access the L30 from a computer through Ethernet, first assign an IP address to the relay from the front panel keyboard. Press the MENU key until the SETTINGS menu displays.
  • Page 20 Right-click the Local Area Connection icon and select Properties. Select the Internet Protocol (TCP/IP) item from the list, and click the Properties button. Click the “Use the following IP address” box. 1-10 L30 Line Current Differential System GE Multilin...
  • Page 21 1 GETTING STARTED 1.3 ENERVISTA UR SETUP SOFTWARE Enter an IP address with the first three numbers the same as the IP address of the L30 relay and the last number dif- ferent (in this example, 1.1.1.2). Enter a subnet mask equal to the one set in the L30 (in this example, 255.0.0.0).
  • Page 22 Ensure that the “Use a proxy server for your LAN” box is not checked. If this computer is used to connect to the Internet, re-enable any proxy server settings after the computer has been discon- nected from the L30 relay. Start the Internet Explorer software.
  • Page 23 Click the Quick Connect button to open the Quick Connect dialog box. Select the Ethernet interface and enter the IP address assigned to the L30, then click the Connect button. The EnerV- ista UR Setup software creates a site named “Quick Connect” with a corresponding device also named “Quick Con- nect”...
  • Page 24: Connecting To The L30 Relay

    The EnerVista UR Setup software has several quick action buttons to provide instant access to several functions that are often performed when using L30 relays. From the online window, users can select the relay to interrogate from a pull-down window, then click the button for the action they want to perform. The following quick action functions are available: •...
  • Page 25: Setting Up Cybersentry And Changing Default Password

    If using EnerVista, navigate to Settings > Product Setup > Security. Change the Local Administrator Password, for example. It is strongly recommended that the password for the Administrator be changed from the default. Changing the passwords for the other three roles is optional. GE Multilin L30 Line Current Differential System 1-15...
  • Page 26: Ur Hardware

    This device (catalog number F485) connects to the computer using a straight-through serial cable. A shielded twisted-pair (20, 22, or 24 AWG) connects the F485 converter to the L30 rear communications port. The converter terminals (+, –, GND) are connected to the L30 communication module (+, –, COM) terminals. See the CPU Communica- tion Ports section in chapter 3 for details.
  • Page 27: Using The Relay

    MESSAGE LEFT key from a setting value or actual value display returns to the header display. HIGHEST LEVEL LOWEST LEVEL (SETTING VALUE)  SETTINGS  SECURITY ACCESS LEVEL:  PRODUCT SETUP  Restricted  SETTINGS  GE Multilin L30 Line Current Differential System 1-17...
  • Page 28: Relay Activation

    For more information, see the CyberSentry content in the Security section of the next chapter. 1.5.6 FLEXLOGIC CUSTOMIZATION FlexLogic equation editing is required for setting user-defined logic for customizing the relay operations. See the FlexLogic section in Chapter 5. 1-18 L30 Line Current Differential System GE Multilin...
  • Page 29: Commissioning

    The L30 performs a number of continual self-tests and takes the necessary action in case of any major errors (see the Relay Self-tests section in chapter 7). However, it is recommended that L30 maintenance be scheduled with other system maintenance.
  • Page 30 1.5 USING THE RELAY 1 GETTING STARTED 1-20 L30 Line Current Differential System GE Multilin...
  • Page 31: Product Description

    Ethernet port supports IEC 61850, IEC 61850-90-5, Modbus/TCP, and TFTP protocols, PTP (according to IEEE Std. 1588- 2008 or IEC 61588), and allows access to the relay via any standard web browser (L30 web pages). The IEC 60870-5-104 protocol is supported on the Ethernet port. The Ethernet port also supports the Parallel Redundancy Protocol (PRP) of IEC 62439-3 (clause 4, 2012) when purchased as an option.
  • Page 32 Digital elements (48) Non-volatile latches Virtual inputs (64) Direct inputs (8 per pilot channel) Non-volatile selector switch Virtual outputs (96) Disconnect switches Open pole detector VT fuse failure DNP 3.0 or IEC 60870-5-104 protocol Oscillography L30 Line Current Differential System GE Multilin...
  • Page 33: Features

    Zero-sequence removal for application on lines with tapped transformers connected in a grounded wye on the line side • GE phaselets approach based on the Discrete Fourier Transform with 64 samples per cycle and transmitting two time- stamped phaselets per cycle •...
  • Page 34: Security

    Clearing the event records • Clearing the oscillography records • Clearing fault reports • Changing the date and time • Clearing the breaker arcing current • Clearing the data logger • Clearing the user-programmable pushbutton states L30 Line Current Differential System GE Multilin...
  • Page 35 When entering a settings or command password via EnerVista or any serial interface, the user must enter the correspond- ing connection password. If the connection is to the back of the L30, the remote password must be used. If the connection is to the RS232 port of the faceplate, the local password applies.
  • Page 36 |--------------- Virtual Inputs |--------------- Contact Output |--------------- Virtual Output |--------------- Remote Devices |--------------- Remote Inputs |--------------- Remote DPS input Remote Output DNA |--------------- Bit Pair Remote Output user |--------------- Bit Pair |--------------- Resetting L30 Line Current Differential System GE Multilin...
  • Page 37 Device Authentication (local UR device authenticates) • Server Authentication (RADIUS server authenticates) The EnerVista software allows access to functionality that is determined by the user role, which comes either from the local UR device or RADIUS server. GE Multilin L30 Line Current Differential System...
  • Page 38: Iec 870-5-103 Protocol

    103 communication messages. The UR implementation of IEC 60870-5-103 consists of the following functions: • Report binary inputs • Report analog values (measurands) • Commands • Time synchronization The RS485 port supports IEC 60870-5-103. L30 Line Current Differential System GE Multilin...
  • Page 39: Order Codes

    2.2ORDER CODES 2.2.1 OVERVIEW The L30 is available as a 19-inch rack horizontal mount or reduced-size (¾) vertical unit and consists of the following mod- ules: power supply, CPU, CT/VT, contact input and output, transducer input and output, and inter-relay communications.
  • Page 40 2.2 ORDER CODES 2 PRODUCT DESCRIPTION Table 2–4: L30 ORDER CODES (HORIZONTAL UNITS) * - F - W/X Full Size Horizontal Mount BASE UNIT Base Unit IEC 60870-5-103 + PMU IEC 60870-5-103 + IEC 61850 + PMU IEC 60870-5-103 + three-pole autoreclose + synchrocheck...
  • Page 41 2 PRODUCT DESCRIPTION 2.2 ORDER CODES The order codes for the reduced size vertical mount units are shown below. Table 2–5: L30 ORDER CODES (REDUCED SIZE VERTICAL UNITS) * - F Reduced Size Vertical Mount BASE UNIT Base Unit RS485 and Three Multi-mode fiber 100Base-FX (SFP with LC)
  • Page 42: Order Codes With Process Bus Modules

    RS422, 2 Channels 2.2.3 ORDER CODES WITH PROCESS BUS MODULES The order codes for the horizontal mount units with the process bus module are shown below. Table 2–6: L30 ORDER CODES (HORIZONTAL UNITS WITH PROCESS BUS) * - F - W/X...
  • Page 43 2 PRODUCT DESCRIPTION 2.2 ORDER CODES Table 2–6: L30 ORDER CODES (HORIZONTAL UNITS WITH PROCESS BUS) * - F - W/X Full Size Horizontal Mount BASE UNIT Base Unit IEEE 1588 and IEC 61850 IEEE 1588 and phasor measurement unit (PMU)
  • Page 44 RS422, 2 Channels The order codes for the reduced size vertical mount units with the process bus module are shown below. Table 2–7: L30 ORDER CODES (REDUCED SIZE VERTICAL UNITS WITH PROCESS BUS) * - F Reduced Size Vertical Mount...
  • Page 45 2 PRODUCT DESCRIPTION 2.2 ORDER CODES Table 2–7: L30 ORDER CODES (REDUCED SIZE VERTICAL UNITS WITH PROCESS BUS) * - F Reduced Size Vertical Mount PRP and CyberSentry Lvl 1 PRP, CyberSentry Lvl 1, and IEC 61850 PRP, CyberSentry Lvl 1, and PMU...
  • Page 46 2.2 ORDER CODES 2 PRODUCT DESCRIPTION Table 2–7: L30 ORDER CODES (REDUCED SIZE VERTICAL UNITS WITH PROCESS BUS) * - F Reduced Size Vertical Mount POWER SUPPLY 125 / 250 V AC/DC power supply 24 to 48 V (DC only) power supply...
  • Page 47: Replacement Modules

    Replacement modules can be ordered separately. When ordering a replacement CPU module or faceplate, provide the serial number of your existing unit. Not all replacement modules may be applicable to the L30 relay. Only the modules specified in the order codes are available as replacement modules.
  • Page 48 Channel 1 - RS422; Channel 2 - 1300 nm, single-mode, Laser Channel 1 - G.703; Channel 2 - 1300 nm, single-mode Laser G.703, 1 Channel G.703, 2 Channels RS422, 1 Channel RS422, 2 Channels 2-18 L30 Line Current Differential System GE Multilin...
  • Page 49: Signal Processing

    The sampling rate is dynamically adjusted to the actual system frequency by an accurate and fast frequency tracking system. The A/D converter has the following ranges of AC signals: Voltages: ± ⋅ 260 V (EQ 2.1) Currents: GE Multilin L30 Line Current Differential System 2-19...
  • Page 50 Other advanced UR order code options are available to support IEC 61850 Ed2.0 (including fast GOOSE, MMS server, 61850 services, ICD/CID/IID files, and so on), IEEE 1588 (IEEE C37.238 power profile) based time synchronization, Cyber- Sentry (advanced cyber security), the Parallel Redundancy Protocol (PRP), IEC 60870-5-103, and so on. 2-20 L30 Line Current Differential System GE Multilin...
  • Page 51: Pilot Channel Relaying

    (DTT) signal to all of the other L30 relays on the protected line. If a slave L30 relay issues a trip from one of its backup functions, it can send a transfer trip signal to its master and other slave relays if such option is designated.
  • Page 52: Channel Monitor

    2.4.2 CHANNEL MONITOR The L30 has logic to detect that the communications channel is deteriorating or has failed completely. This can provide an alarm indication and disable the current differential protection. Note that a failure of the communications from the master to a slave does not prevent the master from performing the current differential algorithm;...
  • Page 53: Loopback Test

    The L30 includes provision for sending and receiving a single-pole direct transfer trip (DTT) signal from current differential protection between the L30 relays at the line terminals using the pilot communications channel. The user may also initiate an additional eight pilot signals with an L30 communications channel to create trip, block, or signaling logic. A FlexLogic operand, an external contact closure, or a signal over the LAN communication channels can be assigned for that logic.
  • Page 54: Specifications

    Operate time: <20 ms at 3 × pickup at 60 Hz range of 0.1<V<0.9 VT Nominal in a Timer accuracy: ±3% of operate time or ±1/4 cycle fixed linear relationship (whichever is greater) 2-24 L30 Line Current Differential System GE Multilin...
  • Page 55 3.5 cycles at 0.3 Hz/s change typically 3 cycles at 0.5 Hz/s change Typical times are average operate times including variables such as frequency change instance, test method, etc., and may vary by ±0.5 cycles. GE Multilin L30 Line Current Differential System 2-25...
  • Page 56: User-programmable Elements

    Number: up to 256 logical variables grouped tual input under 16 Modbus addresses Reset mode: self-reset or latched Programmability: any logical variable, contact, or virtual input 2-26 L30 Line Current Differential System GE Multilin...
  • Page 57: Monitoring

    01 channel for NN days 16 channels for NN days Triggers: any element pickup, dropout, or operate; contact input change of state; contact output change of state; self-test events Data storage: in non-volatile memory GE Multilin L30 Line Current Differential System 2-27...
  • Page 58: Metering

    Current withstand: 20 ms at 250 times rated 1 sec at 100 times rated continuous 4xInom Short circuit rating:150000 RMS sym- metrical amperes, 250 V maximum (pri- mary current to external CT) 2-28 L30 Line Current Differential System GE Multilin...
  • Page 59: Power Supply

    10 000 A Minimum AC voltage: 88 V at 25 to 100 Hz Maximum AC voltage: 265 V at 25 to 100 Hz Voltage loss hold-up: 200 ms duration at maximum load GE Multilin L30 Line Current Differential System 2-29...
  • Page 60: Outputs

    ±0.75% of full-scale for 0 to 1 mA range ±0.5% of full-scale for –1 to 1 mA range ±0.75% of full-scale for 0 to 20 mA range 99% Settling time to a step change: 100 ms Isolation: 1.5 kV 2-30 L30 Line Current Differential System GE Multilin...
  • Page 61: Communication Protocols

    G.703 100 m RS422 distance is based on transmitter power and does not take into consideration the clock source NOTE provided by the user. LINK POWER BUDGET AND MAXIMUM OPTICAL INPUT POWER GE Multilin L30 Line Current Differential System 2-31...
  • Page 62 1300 nm ELED, 9/125 μm 11.4 km 20 km single mode 1300 nm Laser, 9/125 μm 64 km 65 km single mode 1550 nm Laser, 9/125 μm 105 km 125 km single mode 2-32 L30 Line Current Differential System GE Multilin...
  • Page 63: Environmental

    – Overvoltage category: 20°C Ingress protection: IP20 front, IP10 back HUMIDITY Noise: 0 dB Humidity: operating up to 95% (non-condensing) at 55°C (as per IEC60068-2-30 variant 1, 6 days). GE Multilin L30 Line Current Differential System 2-33...
  • Page 64: Type Tests

    Safety IEC 60255-27 Insulation: class 1, Pollution degree: 2, Over voltage cat II 2.5.12 PRODUCTION TESTS THERMAL Products go through an environmental test based upon an Accepted Quality Level (AQL) sampling process. 2-34 L30 Line Current Differential System GE Multilin...
  • Page 65: Approvals

    Normally, cleaning is not required; but for situations where dust has accumulated on the faceplate display, a dry cloth can be used. To avoid deterioration of electrolytic capacitors, power up units that are stored in a de-energized state once per year, for one hour continuously. GE Multilin L30 Line Current Differential System 2-35...
  • Page 66 2.5 SPECIFICATIONS 2 PRODUCT DESCRIPTION 2-36 L30 Line Current Differential System GE Multilin...
  • Page 67: Hardware

    HORIZONTAL UNITS The L30 Line Current Differential System is available as a 19-inch rack horizontal mount unit with a removable faceplate. The faceplate can be specified as either standard or enhanced at the time of ordering. The enhanced faceplate contains additional user-programmable pushbuttons and LED indicators.
  • Page 68 VERTICAL UNITS The L30 Line Current Differential System is available as a reduced size (¾) vertical mount unit, with a removable faceplate. The faceplate can be specified as either standard or enhanced at the time of ordering. The enhanced faceplate contains additional user-programmable pushbuttons and LED indicators.
  • Page 69 3 HARDWARE 3.1 DESCRIPTION Figure 3–4: L30 VERTICAL DIMENSIONS (ENHANCED PANEL) GE Multilin L30 Line Current Differential System...
  • Page 70 3.1 DESCRIPTION 3 HARDWARE Figure 3–5: L30 VERTICAL MOUNTING AND DIMENSIONS (STANDARD PANEL) For side mounting L30 devices with the enhanced front panel, see the following documents available on the UR DVD and the GE Grid Solutions website: • GEK-113180: UR-Series UR-V Side-Mounting Front Panel Assembly Instructions •...
  • Page 71 3 HARDWARE 3.1 DESCRIPTION Figure 3–6: L30 VERTICAL SIDE MOUNTING INSTALLATION (STANDARD PANEL) GE Multilin L30 Line Current Differential System...
  • Page 72 3.1 DESCRIPTION 3 HARDWARE Figure 3–7: L30 VERTICAL SIDE MOUNTING REAR DIMENSIONS (STANDARD PANEL) L30 Line Current Differential System GE Multilin...
  • Page 73: Rear Terminal Layout

    (nearest to CPU module) which is indicated by an arrow marker on the terminal block. See the following figure for an example of rear terminal assignments. Figure 3–9: EXAMPLE OF MODULES IN F AND H SLOTS GE Multilin L30 Line Current Differential System...
  • Page 74 (rows 1 to 8), use a minimum of 17 inch-pounds. During manufacturing, the power supply and CPU modules are installed in slots B and D of the chassis with 13 inch-pounds of torque on the screws at the top and bottom of the modules. L30 Line Current Differential System GE Multilin...
  • Page 75: Wiring

    3 HARDWARE 3.2 WIRING 3.2WIRING 3.2.1 TYPICAL WIRING Figure 3–10: TYPICAL WIRING DIAGRAM (T MODULE SHOWN FOR CPU) GE Multilin L30 Line Current Differential System...
  • Page 76: Dielectric Strength

    (see the Self-test Errors section in chapter 7) or control power is lost, the relay is de-energize. For high reliability systems, the L30 has a redundant option in which two L30 power supplies are placed in parallel on the bus.
  • Page 77: Ct And Vt Modules

    CT connections for both ABC and ACB phase rotations are identical as shown in the Typical wiring diagram. The exact placement of a zero-sequence core balance CT to detect ground fault current is shown as follows. Twisted-pair cabling on the zero-sequence CT is recommended. GE Multilin L30 Line Current Differential System 3-11...
  • Page 78 NOTE Current inputs Voltage inputs 8F, 8G, 8L, and 8M modules (4 CTs and 4 VTs) Current inputs 8H, 8J, 8N, and 8R modules (8 CTs) 842766A3.CDR Figure 3–13: CT/VT MODULE WIRING 3-12 L30 Line Current Differential System GE Multilin...
  • Page 79: Process Bus Modules

    3.2.5 PROCESS BUS MODULES The L30 can be ordered with a process bus interface module. This module is designed to interface with the GE Multilin HardFiber system, allowing bidirectional IEC 61850 fiber optic communications with up to eight HardFiber merging units, known as Bricks.
  • Page 80 Logic operand driving the contact output should be given a reset delay of 10 ms to prevent damage of the output contact (in situations when the element initiating the contact output is bouncing, at val- ues in the region of the pickup value). 3-14 L30 Line Current Differential System GE Multilin...
  • Page 81 ~7a, ~7c 2 Inputs ~7a, ~7c 2 Inputs ~7a, ~7c 2 Inputs ~7a, ~7c 2 Inputs ~8a, ~8c 2 Inputs ~8a, ~8c 2 Inputs ~8a, ~8c 2 Inputs ~8a, ~8c 2 Inputs GE Multilin L30 Line Current Differential System 3-15...
  • Page 82 ~5a, ~5c 2 Inputs 2 Outputs Solid-State Solid-State ~6a, ~6c 2 Inputs 2 Outputs Not Used Not Used ~7a, ~7c 2 Inputs 2 Outputs Solid-State Solid-State ~8a, ~8c 2 Inputs Not Used 3-16 L30 Line Current Differential System GE Multilin...
  • Page 83 3 HARDWARE 3.2 WIRING Figure 3–15: CONTACT INPUT AND OUTPUT MODULE WIRING (1 of 2) GE Multilin L30 Line Current Differential System 3-17...
  • Page 84 3.2 WIRING 3 HARDWARE Figure 3–16: CONTACT INPUT AND OUTPUT MODULE WIRING (2 of 2) For proper functionality, observe the polarity shown in the figures for all contact input and output con- nections. 3-18 L30 Line Current Differential System GE Multilin...
  • Page 85 L30 input even when the output is open, if there is a substantial distributed capacitance (represented by C1) present in the wiring between the output and the L30 input and the debounce time setting in the L30 relay is low enough.
  • Page 86 This operation of contact inputs also can be prevented by using the Auto-Burnish contact inputs or contact inputs with active impedance. Figure 3–19: CONTACT INPUT CONNECTED TO A CONTACT OUTPUT WITH RESISTOR (R2) ACROSS THE INPUT 3-20 L30 Line Current Differential System GE Multilin...
  • Page 87 (EQ 3.2) The 2 mA current is used in case the contact input is connected across the GE Form A contact output with voltage monitoring. Otherwise use the amperage of the active circuit connected to the contact input when its contact output is open and the voltage across the contact input is third trigger threshold to calculate the resistor value.
  • Page 88 Vresistor < contact input threshold (84 V) (EQ 3.5) In conclusion, in this example, the contact input does NOT operate falsely with the Burden Resistor across its input AND when a battery ground is present. 3-22 L30 Line Current Differential System GE Multilin...
  • Page 89 = OFF CONTACT INPUT 1 AUTO-BURNISH = OFF CONTACT INPUT 2 AUTO-BURNISH = ON CONTACT INPUT 1 AUTO-BURNISH = ON CONTACT INPUT 2 AUTO-BURNISH = ON 842751A1.CDR Figure 3–21: AUTO-BURNISH DIP SWITCHES GE Multilin L30 Line Current Differential System 3-23...
  • Page 90 Contact inputs susceptible to parasitic capacitance caused by long cable runs affected by switching surges from external circuits can result in inadvertent activation of contact inputs with the external contact open. In this case, GE recommends using the digital I/O module with active impedance circuit.
  • Page 91: Transducer Inputs And Outputs

    (5A, 5C, 5D, 5E, and 5F) and channel arrangements that can be ordered for the relay. Wherever a tilde “~” symbol appears, substitute with the slot position of the module. NOTE GE Multilin L30 Line Current Differential System 3-25...
  • Page 92 3.2 WIRING 3 HARDWARE Figure 3–23: TRANSDUCER INPUT/OUTPUT MODULE WIRING The following figure show how to connect RTDs. 3-26 L30 Line Current Differential System GE Multilin...
  • Page 93: Rs232 Faceplate Port

    3.2.8 RS232 FACEPLATE PORT A 9-pin RS232C serial port is located on the L30 faceplate for programming with a computer. All that is required to use this interface is a computer running the EnerVista UR Setup software provided with the relay. Cabling for the RS232 port is shown in the following figure for both 9-pin and 25-pin connectors.
  • Page 94: Cpu Communication Ports

    This common voltage is implied to be a power supply common. Some systems allow the shield (drain wire) to be used as common wire and to connect directly to the L30 COM terminal (#3); others function cor- rectly only if the common wire is connected to the L30 COM terminal, but insulated from the shield.
  • Page 95 The fiber optic communication ports allow for fast and efficient communications between relays at 100 Mbps. Optical fiber can be connected to the relay supporting a wavelength of 1310 nm in multi-mode. GE Multilin L30 Line Current Differential System 3-29...
  • Page 96: Irig-b

    IRIG-B is a standard time code format that allows stamping of events to be synchronized among connected devices. The IRIG-B code allows time accuracies of up to 100 ns. Using the IRIG-B input, the L30 operates an internal oscillator with 1 µs resolution and accuracy.
  • Page 97: Pilot Channel Communications

    Those that apply depend on options purchased. The options are outlined in the Inter-Relay Communications section of the Order Code tables in Chapter 2. All of the fiber modules use ST type connectors. For two-terminal applications, each L30 relay requires at least one com- munications channel.
  • Page 98: Fiber-laser Transmitters

    Observing any fiber transmitter output can injure the eye. When using a laser Interface, attenuators can be necessary to ensure that you do not exceed the maximum optical input power to the receiver. 3-32 L30 Line Current Differential System GE Multilin...
  • Page 99: Interface

    Remove the module cover screw. Remove the top cover by sliding it towards the rear and then lift it upwards. Set the timing selection switches (channel 1, channel 2) to the desired timing modes. GE Multilin L30 Line Current Differential System 3-33...
  • Page 100 Loop Timing Mode: The system clock is derived from the received line signal. Therefore, the G.703 timing selection should be in loop timing mode for connections to higher order systems. For connection to a higher order system (UR- 3-34 L30 Line Current Differential System GE Multilin...
  • Page 101 G.703 line side of the interface while the other lies on the differential Manchester side of the interface. DMR = Differential Manchester Receiver DMX = Differential Manchester Transmitter G7X = G.703 Transmitter G7R = G.703 Receiver 842775A1.CDR Figure 3–36: G.703 DUAL LOOPBACK MODE GE Multilin L30 Line Current Differential System 3-35...
  • Page 102: Rs422 Interface

    The send timing outputs from the multiplexer (data module 1), connects to the clock inputs of the UR–RS422 interface in the usual fashion. In addition, 3-36 L30 Line Current Differential System GE Multilin...
  • Page 103 Figure 3–39: TIMING CONFIGURATION FOR RS422 TWO-CHANNEL, THREE-TERMINAL APPLICATION Data module 1 provides timing to the L30 RS422 interface via the ST(A) and ST(B) outputs. Data module 1 also provides timing to data module 2 TT(A) and TT(B) inputs via the ST(A) and AT(B) outputs. The data module pin numbers have been omitted in the figure above since they vary by manufacturer.
  • Page 104: Two-channel Two-clock Rs422 Interface

    74 modules are used in two-terminal with a redundant channel or three-terminal configurations where channel 1 is employed via the RS422 interface (possibly with a multiplexer) and channel 2 via direct fiber. 3-38 L30 Line Current Differential System GE Multilin...
  • Page 105: And Fiber Interface

    The frame is 256 bits and is repeated at a frame rate of 8000 Hz, with a resultant bit rate of 2048 kbps. The specifications for the module are as follows:. GE Multilin L30 Line Current Differential System 3-39...
  • Page 106 5.60. For customers using firmware release 5.60 and higher, the module can be identified with "Rev D" printed on the module and is to be used on all ends of L30 communication for two and three terminal applications.
  • Page 107 Once the clips have cleared the raised edge of the chassis, engage the clips simultaneously. When the clips have locked into position, the module is fully inserted. Figure 3–44: IEEE C37.94 TIMING SELECTION SWITCH SETTING GE Multilin L30 Line Current Differential System 3-41...
  • Page 108 Solid yellow — FPGA is receiving a "yellow bit" and remains yellow for each "yellow bit" • Solid red — FPGA is not receiving a valid packet or the packet received is invalid 3-42 L30 Line Current Differential System GE Multilin...
  • Page 109: C37.94sm Interface

    5.60. For customers using firmware release 5.60 and higher, the module can be identified with "Rev D" printed on the module and is to be used on all ends of L30 communi- cation for two and three terminal applications.
  • Page 110 Once the clips have cleared the raised edge of the chassis, engage the clips simultaneously. When the clips have locked into position, the module is fully inserted. 3-44 L30 Line Current Differential System GE Multilin...
  • Page 111 Modules shipped since January 2012 have status LEDs that indicate the status of the DIP switches, as shown in the follow- ing figure. Figure 3–47: STATUS LEDS The clock configuration LED status is as follows: • Flashing green — loop timing mode while receiving a valid data packet GE Multilin L30 Line Current Differential System 3-45...
  • Page 112 Solid yellow — FPGA is receiving a "yellow bit" and remains yellow for each "yellow bit" • Solid red — FPGA is not receiving a valid packet or the packet received is invalid 3-46 L30 Line Current Differential System GE Multilin...
  • Page 113: Human Interfaces

    The EnerVista UR Setup software is provided with every L30 relay and runs on Microsoft Windows XP, 7, and Server 2008. This chapter provides a summary of the basic EnerVista UR Setup software interface features. The EnerVista UR Setup Help File provides details for getting started and using the EnerVista UR Setup software interface.
  • Page 114 Site List window are automatically sent to the online communicating device. g) FIRMWARE UPGRADES The firmware of a L30 device can be upgraded, locally or remotely, via the EnerVista UR Setup software. The correspond- ing instructions are provided by the EnerVista UR Setup Help file under the topic “Upgrading Firmware”.
  • Page 115: Enervista Ur Setup Main Window

    Device data view windows, with common tool bar Settings file data view windows, with common tool bar Workspace area with data view tabs Status bar 10. Quick action hot links 842786A2.CDR Figure 4–1: ENERVISTA UR SETUP SOFTWARE MAIN WINDOW GE Multilin L30 Line Current Differential System...
  • Page 116: Extended Enervista Ur Setup Features

    Right-click the device or file and select the Template Mode > Edit Template option to place the device in template editing mode. If prompted, enter the template password then click OK. Open the relevant settings window that contains settings to be specified as viewable. L30 Line Current Differential System GE Multilin...
  • Page 117 ADDING PASSWORD PROTECTION TO A TEMPLATE GE recommends that templates be saved with password protection to maximize security. When templates are created for online settings, the password is added during the initial template creation step. It does not need to be added after the template is created.
  • Page 118 Template Mode > View In Template Mode command. The template specifies that only the Pickup Curve Phase time overcurrent settings window without template applied. settings be available. 842858A1.CDR Figure 4–4: APPLYING TEMPLATES VIA THE VIEW IN TEMPLATE MODE COMMAND L30 Line Current Differential System GE Multilin...
  • Page 119 Once a settings template is removed, it cannot be reapplied and a new settings template needs to be defined before use. Right-click the device in the Online or Offline Window area and select the Template Mode > Remove Template option. Enter the template password and click OK to continue. GE Multilin L30 Line Current Differential System...
  • Page 120: Securing And Locking Flexlogic Equations

    Select the Template Mode > View In Template Mode option to view the template. Optionally apply a password to the template by right-clicking the device and selecting the Template Mode > Pass- word Protect Template option. L30 Line Current Differential System GE Multilin...
  • Page 121 A serial number is viewable under Actual Values > Product Info > Model Information, the inside front panel, and the rear of the device. GE Multilin L30 Line Current Differential System...
  • Page 122: Settings File Traceability

    When a settings file is transferred to a L30 device, the date, time, and serial number of the L30 are sent back to EnerVista UR Setup and added to the settings file on the local PC. This infor- mation can be compared with the L30 actual values at any later date to determine if security has been compromised.
  • Page 123 With respect to the above diagram, the traceability feature is used as follows. The transfer date of a setting file written to a L30 is logged in the relay and can be viewed via EnerVista UR Setup or the front panel display. Likewise, the transfer date of a setting file saved to a local PC is logged in EnerVista UR Setup.
  • Page 124 ONLINE DEVICE TRACEABILITY INFORMATION The L30 serial number and file transfer date are available for an online device through the actual values. Select the Actual Values > Product Info > Model Information menu item within the EnerVista UR Setup online window as shown in the example below.
  • Page 125: Faceplate Interface

    The following figure shows the horizontal arrange- ment of the faceplate panels. Figure 4–16: UR-SERIES STANDARD HORIZONTAL FACEPLATE PANELS GE Multilin L30 Line Current Differential System 4-13...
  • Page 126: Led Indicators

    The status indicators in the first column are described below. • IN SERVICE: This LED indicates that control power is applied, all monitored inputs, outputs, and internal systems are OK, and that the device has been programmed. 4-14 L30 Line Current Differential System GE Multilin...
  • Page 127 Support for applying a customized label beside every LED is provided. Default labels are shipped in the label pack- age of every L30, together with custom templates. The default labels can be replaced by user-printed labels. User customization of LED operation is of maximum benefit in installations where languages other than English are used to communicate with operators.
  • Page 128 User customization of LED operation is of maximum benefit in installations where languages other than English are used to communicate with operators. Refer to the User-programmable LEDs section in chapter 5 for the settings used to program the operation of the LEDs on these panels. 4-16 L30 Line Current Differential System GE Multilin...
  • Page 129: Custom Labeling Of Leds

    EnerVista UR Setup software is installed and operational • The L30 settings have been saved to a settings file • The L30 front panel label cutout sheet (GE Multilin part number 1006-0047) has been downloaded from http://www.gegridsolutions.com/products/support/ur/URLEDenhanced.doc and printed •...
  • Page 130 Enter the text to appear next to each LED and above each user-programmable pushbuttons in the fields provided. Feed the L30 front panel label cutout sheet into a printer and press the Print button in the front panel report window.
  • Page 131 4.3 FACEPLATE INTERFACE Bend the tab at the center of the tool tail as shown below. The following procedure describes how to remove the LED labels from the L30 enhanced front panel and insert the custom labels. Use the knife to lift the LED label and slide the label tool underneath. Make sure the bent tabs are pointing away from the relay.
  • Page 132 Slide the new LED label inside the pocket until the text is properly aligned with the LEDs, as shown below. The following procedure describes how to remove the user-programmable pushbutton labels from the L30 enhanced front panel and insert the custom labels.
  • Page 133 Slide the label tool under the user-programmable pushbutton label until the tabs snap out as shown below. This attaches the label tool to the user-programmable pushbutton label. Remove the tool and attached user-programmable pushbutton label as shown below. GE Multilin L30 Line Current Differential System 4-21...
  • Page 134: Display

    INTRODUCTION The L30 can interface with associated circuit breakers. In many cases the application monitors the state of the breaker, that can be presented on faceplate LEDs, along with a breaker trouble indication. Breaker operations can be manually initiated from faceplate keypad or automatically initiated from a FlexLogic operand.
  • Page 135: Menus

    Press the MENU key to select a header display page (top-level menu). The header title appears momentarily followed by a header display page menu item. Each press of the MENU key advances through the following main heading pages: • Actual values • Settings GE Multilin L30 Line Current Differential System 4-23...
  • Page 136 Pressing the MESSAGE DOWN key displays the second setting sub-header associ-  PROPERTIES ated with the Product Setup header.  Press the MESSAGE RIGHT key once more to display the first setting for Display FLASH MESSAGE Properties. TIME: 1.0 s 4-24 L30 Line Current Differential System GE Multilin...
  • Page 137: Changing Settings

    ENTERING ALPHANUMERIC TEXT Text settings have data values which are fixed in length, but user-defined in character. They can be upper case letters, lower case letters, numerals, and a selection of special characters. GE Multilin L30 Line Current Differential System 4-25...
  • Page 138: Settings

    The information in this section refers to password security. For information on how to set or change CyberSentry pass- words, see the Settings > Product Setup > Security > CyberSentry section in the next chapter. 4-26 L30 Line Current Differential System GE Multilin...
  • Page 139 By default, when an incorrect Command or Setting password has been entered via the faceplate interface three times within three minutes, the FlexLogic operand is set to “On” and the L30 does not allow settings or LOCAL ACCESS DENIED command level access via the faceplate interface for the next five minutes.
  • Page 140 4.3 FACEPLATE INTERFACE 4 HUMAN INTERFACES 4-28 L30 Line Current Differential System GE Multilin...
  • Page 141: Overview

    See page 5-90.  SYSTEM SETUP   POWER SYSTEM See page 5-91.   SIGNAL SOURCES See page 5-92.   87L POWER SYSTEM See page 5-95.   BREAKERS See page 5-101.  GE Multilin L30 Line Current Differential System...
  • Page 142  DIGITAL ELEMENTS See page 5-228.   DIGITAL COUNTERS See page 5-231.   MONITORING See page 5-233.  ELEMENTS  SETTINGS  CONTACT INPUTS See page 5-244.  INPUTS / OUTPUTS  L30 Line Current Differential System GE Multilin...
  • Page 143 See page 5-264.  FORCE CONTACT See page 5-265.  INPUTS  FORCE CONTACT See page 5-266.  OUTPUTS  CHANNEL TESTS See page 5-267.   PMU See page 5-267.  TEST VALUES GE Multilin L30 Line Current Differential System...
  • Page 144: Introduction To Elements

    In more complex elements, a set of settings may be provided to define the range of the measured parameters which will cause the element to pickup. L30 Line Current Differential System GE Multilin...
  • Page 145: Introduction To Ac Sources

    Sources, in the context of L30 series relays, refer to the logical grouping of current and voltage signals such that one source contains all the signals required to measure the load or fault in a particular power apparatus. A given source may contain all or some of the following signals: three-phase currents, single-phase ground current, three-phase voltages and an auxiliary voltages from a single-phase VT for checking for synchronism.
  • Page 146 CTs through which any portion of the current for the element being protected could flow. Auxiliary CTs are required to perform ratio matching if the ratios of the primary CTs to be summed are not identical. In the L30 relay, provisions have been included for all the current signals to be brought to the device where grouping, CT ratio correction, and summation are applied internally via configuration settings.
  • Page 147 Upon startup, the CPU configures the settings required to characterize the current and voltage inputs, and will display them in the appropriate section in the sequence of the banks (as described above) as follows for a maximum configuration: F1, F5, L1, L5, S1, and S5. GE Multilin L30 Line Current Differential System...
  • Page 148: Product Setup

    To reset the unit after a lost password: Email GE customer service at multilin.tech@ge.com with the serial number and using a recognizable corporate email account. Customer service provides a code to reset the relay to the factory defaults.
  • Page 149 When entering a settings or command password via EnerVista or any serial interface, the user must enter the correspond- ing connection password. If the connection is to the back of the L30, the remote password must be used. If the connection is to the RS232 port of the faceplate, the local password must be used.
  • Page 150 INVALID ATTEMPTS BEFORE LOCKOUT The L30 provides a means to raise an alarm upon failed password entry. Should password verification fail while accessing a password-protected level of the relay (either settings or commands), the FlexLogic operand is UNAUTHORIZED ACCESS asserted.
  • Page 151 ACCESS AUTH TIMEOUT immediately denied. If access is permitted and an off-to-on transition of the FlexLogic operand is detected, the timeout is restarted. The status of this timer is updated every 5 seconds. GE Multilin L30 Line Current Differential System 5-11...
  • Page 152 It is disabled by default to allow the administrator direct access to the EnerVista software immediately after installation. When security is disabled, all users have administrator access. GE recommends enabling the EnerVista security before placing the device in service.
  • Page 153 Enter a username in the User field. The username must be 4 to 20 characters in length. Select the user access rights by enabling the check box of one or more of the fields. GE Multilin L30 Line Current Differential System 5-13...
  • Page 154 Deletes the user account when exiting the user management window Actual Values Allows the user to read actual values Settings Allows the user to read setting values Commands Allows the user to execute commands 5-14 L30 Line Current Differential System GE Multilin...
  • Page 155 Note that other protocols (DNP, 101, 103, 104, EGD) are not encrypted, and they are good communications options for SCADA systems when CyberSentry is enabled. CYBERSENTRY SETTINGS THROUGH ENERVISTA CyberSentry security settings are configured under Device > Settings > Product Setup > Security. GE Multilin L30 Line Current Differential System 5-15...
  • Page 156 Authentication method used by RADIUS EAP-TTLS EAP-TTLS EAP-TTLS Administrator Authentication server. Currently fixed to EAP-TTLS. Method Timeout Timeout in seconds between re- 9999 Administrator transmission requests Retries Number of retries before giving up 9999 Administrator 5-16 L30 Line Current Differential System GE Multilin...
  • Page 157 See the Change Text The specified role password-protected. All RADIUS users are Password following Me1# and Administrator, password-protected. Requirement password except for s section section for Supervisor, where requireme it is only itself GE Multilin L30 Line Current Differential System 5-17...
  • Page 158: Security

    This role can also be disabled, but only through a Supervisor authentication. When this role is disabled its permissions are assigned to the Administrator role. 5-18 L30 Line Current Differential System GE Multilin...
  • Page 159 LOAD FACTORY DEFAULTS: This setting is used to reset all the settings, communication and security passwords. An Administrator role is used to change this setting and a Supervisor role (if not disabled) approves it. GE Multilin L30 Line Current Differential System 5-19...
  • Page 160 Administrator if the Supervisor role is disabled. The Supervisor role enables this setting for the relay to start accepting setting changes or command changes or firmware upgrade. After all the setting changes are applied or com- mands executed, the Supervisor disables to lock setting changes. 5-20 L30 Line Current Differential System GE Multilin...
  • Page 161 Observer). When using a serial connection, only device authentication is supported. When server authentication is required, characteristics for communication with a RADIUS server must be configured. This is possible only in the EnerV- GE Multilin L30 Line Current Differential System 5-21...
  • Page 162 Event Number — Event identification number (index) Date & Timestamp — UTC date and time Username — 255 chars maximum, but in the security log it is truncated to 20 characters IP address — Device IP address 5-22 L30 Line Current Differential System GE Multilin...
  • Page 163 Clear energy command was issued RESET_UNAUTH_ACCESS Warning (4) Reset Unauthorized access command was issued CLEAR_TELEPROTECTION_CNT Notice (5) Clear teleprotection counters command was issued CLEAR_ALL_RECS Warning (4) Clear all records command was issued GE Multilin L30 Line Current Differential System 5-23...
  • Page 164: Display Properties

    Some customers prefer very low currents to display as zero, while others prefer the current be displayed even when the value reflects noise rather than the actual signal. The L30 applies a cut- off value to the magnitudes and angles of the measured currents.
  • Page 165 CLEAR EVENT RECORDS: MESSAGE Range: FlexLogic operand CLEAR OSCILLOGRAPHY? MESSAGE Range: FlexLogic operand CLEAR DATA LOGGER: MESSAGE Range: FlexLogic operand CLEAR ARC AMPS 1: MESSAGE Range: FlexLogic operand CLEAR ARC AMPS 2: MESSAGE GE Multilin L30 Line Current Differential System 5-25...
  • Page 166: Clear Relay Records

    Selected records can be cleared from user-programmable conditions with FlexLogic operands. Assigning user-programma- ble pushbuttons to clear specific records are typical applications for these commands. Since the L30 responds to rising edges of the configured FlexLogic operands, they must be asserted for at least 50 ms to take effect.
  • Page 167: Communications

    MESSAGE MIN TIME: 0 ms : The L30 is equipped with two independent serial communication ports. The faceplate RS485 COM2 BAUD RATE PARITY RS232 port is intended for local use and is fixed at 19200 bit/s baud and even parity. The rear COM2 port is RS485 and has settings for baud rate and parity.
  • Page 168 ETHERNET NETWORK TOPOLOGY The L30 has three Ethernet ports. Each Ethernet port must belong to a different network or subnetwork. Configure the IP address and subnet to ensure that each port meets this requirement. Two subnets are different when the bitwise AND oper- ation performed between their respective IP address and mask produces a different result.
  • Page 169 LAN3, to which port 3 (P3) is connected. There is no redundancy. Figure 5–6: MULTIPLE LANS, NO REDUNDANCY Public Network SCADA EnerVista Software LAN1 LAN2 LAN3 ML3000 ML3000 ML3000 IP1/ IP2/ IP3/ MAC2 MAC3 MAC1 859710A2.vsd GE Multilin L30 Line Current Differential System 5-29...
  • Page 170 IP addresses and mask. Configure the network IP and subnet settings before configuring the rout- ing settings. To obtain a list of all port numbers used, for example for audit purposes, contact GE technical support with substantiating information, such as the serial number and order code of your device.
  • Page 171 2 is performed. The delay in switching back ensures that rebooted switching devices connected to the L30, which signal their ports as active prior to being completely functional, have time to completely initialize themselves and become active. Once port 2 is active again, port 3 returns to standby mode.
  • Page 172 The default route is used as the last choice when no other route towards a given destination is found. Range: Standard IPV4 unicast address format  IPV4 DEFAULT ROUTE GATEWAY ADDRESS  127.0.0.1 5-32 L30 Line Current Differential System GE Multilin...
  • Page 173 (RtGwy & Prt1Mask) == (Prt1IP & Prt1Mask) || (RtGwy & Prt2Mask) == (Prt2IP & Prt2Mask) || (RtGwy & Prt3Mask) == (Prt3IP & Prt3Mask) where & is the bitwise-AND operator == is the equality operator || is the logical OR operator GE Multilin L30 Line Current Differential System 5-33...
  • Page 174 PRT2 SUBNET IP MASK = 255.255.255.0 IPV4 DEFAULT ROUTE: GATEWAY ADDRESS = 10.1.1.1 STATIC NETWORK ROUTE 1: RT1 DESTINATION = 10.1.3.0/24; RT1 NET MASK = 255.255.255.0; and RT1 GATE- WAY = 10.1.2.1 5-34 L30 Line Current Differential System GE Multilin...
  • Page 175 This allows the EnerVista UR Setup software to be used on the port. The UR operates as a Modbus slave device only. When using Modbus protocol on the RS232 port, the L30 responds regardless of the pro- MODBUS SLAVE ADDRESS grammed.
  • Page 176 Modbus, IEC 61850 Channel 2: RS485 Channel 1: RS485 Modbus Modbus, IEC 61850 Channel 2: none IEC 104 Modbus Modbus IEC 104, Modbus, IEC 61850 IEC 103 Modbus IEC 103 Modbus, IEC 61850 5-36 L30 Line Current Differential System GE Multilin...
  • Page 177 DEADBAND: 30000 Range: 0 to 100000000 in steps of 1 DNP OTHER DEFAULT MESSAGE DEADBAND: 30000 Range: 1 to 10080 min. in steps of 1 DNP TIME SYNC IIN MESSAGE PERIOD: 1440 min GE Multilin L30 Line Current Differential System 5-37...
  • Page 178 PROTOCOL nected to multiple DNP masters (usually an RTU or a SCADA master station). Since the L30 maintains two sets of DNP data change buffers and connection information, two DNP masters can actively communicate with the L30 at one time.
  • Page 179 DNP analog input points that are voltages will be returned with values 1000 times smaller (for example, a value of 72000 V on the L30 will be returned as 72). These settings are useful when analog input values must be adjusted to fit within cer- tain ranges in DNP masters.
  • Page 180 (for circuit breakers) or raise/lower (for tap changers) using a single control point. That is, the DNP master can operate a single point for both trip and close, or raise and lower, operations. The L30 can be configured to sup- port paired control points, with each paired control point operating two virtual inputs.
  • Page 181 60870-5-104 point lists must be in one continuous block, any points assigned after the first “Off” point are ignored. NOTE Changes to the DNP / IEC 60870-5-104 point lists will not take effect until the L30 is restarted. NOTE l) IEC 61850 PROTOCOL ...
  • Page 182 The L30 supports the Manufacturing Message Specification (MMS) protocol as specified by IEC 61850. MMS is supported over two protocol stacks: TCP/IP over Ethernet. The L30 operates as an IEC 61850 server. The Remote Inputs and Out- puts section in this chapter describe the peer-to-peer GSSE/GOOSE message scheme.
  • Page 183 DESTINATION MAC address; the least significant bit of the first byte must be set. In L30 releases previous to 5.0x, the destination Ethernet MAC address was determined automatically by taking the sending MAC address (that is, the unique, local MAC address of the L30) and setting the multicast bit.
  • Page 184 The L30 has the ability of detecting if a data item in one of the GOOSE datasets is erroneously oscillating. This can be caused by events such as errors in logic programming, inputs improperly being asserted and de-asserted, or failed station components.
  • Page 185 Configure the transmission dataset. Configure the GOOSE service settings. Configure the data. The general steps required for reception configuration are: Configure the reception dataset. Configure the GOOSE service settings. Configure the data. GE Multilin L30 Line Current Differential System 5-45...
  • Page 186 MMXU1 HZ DEADBAND change greater than 45 mHz, from the previous MMXU1.MX.mag.f value, in the source frequency. The L30 must be rebooted (control power removed and re-applied) before these settings take effect. The following procedure illustrates the reception configuration. Configure the reception dataset by making the following changes in the ...
  • Page 187 IEC61850 GOOSE ANALOG INPUT 1 UNITS The GOOSE analog input 1 can now be used as a FlexAnalog value in a FlexElement or in other settings. The L30 must be rebooted (control power removed and re-applied) before these settings take effect.
  • Page 188 DNA and UserSt bit pairs that are included in GSSE messages. To set up a L30 to receive a configurable GOOSE dataset that contains two IEC 61850 single point status indications, the following dataset items can be selected (for example, for configurable GOOSE dataset 1): “GGIO3.ST.Ind1.stVal” and “GGIO3.ST.Ind2.stVal”.
  • Page 189 CPU resources. When server scanning is disabled, there is no updating of the IEC 61850 logical node status values in the L30. Clients are still able to connect to the server (L30 relay), but most data values are not updated. This set- ting does not affect GOOSE/GSSE operation.
  • Page 190 (_) character, and the first character in the prefix must be a letter. This conforms to the IEC 61850 standard. Changes to the logical node prefixes will not take effect until the L30 is restarted. The main menu for the IEC 61850 MMXU deadbands is shown below.
  • Page 191 The GGIO2 control configuration settings are used to set the control model for each input. The available choices are “0” (status only), “1” (direct control), and “2” (SBO with normal security). The GGIO2 control points are used to control the L30 virtual inputs.
  • Page 192 GGIO1 (binary status values). The settings allow the selection of FlexInteger values for each GGIO5 integer value point. It is intended that clients use GGIO5 to access generic integer values from the L30. Additional settings are provided to allow the selection of the number of integer values available in GGIO5 (1 to 16), and to assign FlexInteger values to the GGIO5 integer inputs.
  • Page 193 ITEM 64 attributes supported by the L30. Changes to the dataset will only take effect when the L30 is restarted. It is recommended to use reporting service from logical node LLN0 if a user needs some (but not all) data from already existing GGIO1, GGIO4, and MMXU4 points and their quantity is not greater than 64 minus the number items in this dataset.
  • Page 194 XCBR operating counter status attribute (OpCnt) increments with every operation. Frequent breaker operation can result in very large OpCnt values over time. This setting allows the OpCnt to be reset to “0” for XCBR1. 5-54 L30 Line Current Differential System GE Multilin...
  • Page 195 Since GSSE/GOOSE messages are multicast Ethernet by specification, they are not usually be forwarded by net- work routers. However, GOOSE messages may be forwarded by routers if the router has been configured for VLAN functionality. NOTE GE Multilin L30 Line Current Differential System 5-55...
  • Page 196 Menu”. Web pages are available showing DNP and IEC 60870-5-104 points lists, Modbus registers, event records, fault reports, and so on. First connect the UR and a computer to an Ethernet network, then enter the IP address of the L30 Ethernet port employed into the “Address”...
  • Page 197 PROTOCOL connected to a maximum of two masters (usually either an RTU or a SCADA master station). Since the L30 maintains two sets of IEC 60870-5-104 data change buffers, no more than two masters should actively communicate with the L30 at one time.
  • Page 198 MESSAGE 0.0.0.0 The L30 can specify a maximum of five clients for its IEC 104 connections. These are IP addresses for the controllers to which the L30 can connect. A maximum of two simultaneous connections are supported at any given time.
  • Page 199 Spontaneous transmission occurs as a response to cyclic Class 2 requests. If the L30 wants to transmit Class 1 data at that time, it demands access for Class 1 data transmission (ACD=1 in the con- trol field of the response).
  • Page 200  IEC103 INPUTS   MEASURANDS Range: see sub-menu below  ASDU 2 MESSAGE  Range: see sub-menu below  ASDU 3 MESSAGE  Range: see sub-menu below  ASDU 4 MESSAGE  5-60 L30 Line Current Differential System GE Multilin...
  • Page 201 ASDU 4 ANALOG 9 MESSAGE Range: 0.000 to 65.535 in steps of 0.001 ASDU 4 ANALOG 9 MESSAGE FACTOR: 1.000 Range: -32768 to 32767 in steps of 1 ASDU 4 ANALOG 9 MESSAGE OFFSET: 0 GE Multilin L30 Line Current Differential System 5-61...
  • Page 202 FlexAnalog operands. The measurands sent are voltage, current, power, power fac- tor, and frequency. If any other FlexAnalog is chosen, the L30 sends 0 instead of its value. Note that the power is transmit- ted in KW, not W.
  • Page 203 ASDU command comes. A list of available mappings is provided on the L30. This includes 64 virtual inputs (see the following table). The ON and OFF for the same ASDU command can be mapped to different virtual inputs.
  • Page 204: Modbus User Map

    Precision Time Protocol (PTP), IRIG-B, or SNTP, its accuracy approaches that of the synchroniz- ing time delivered to the relay. While the RTC is not synchronized via PTP or IRIG-B, or the relay determines than it has an 5-64 L30 Line Current Differential System GE Multilin...
  • Page 205 10 µs from the international time standard, the CLOCK UNSYNCHRONIZED FlexLogic oper- and is activated. When the L30/L90 channel asymmetry function is used, the relay’s real time clock must be synchronized to an external time source using PTP or IRIG-B, typically from a global positioning system (GPS) receiver.
  • Page 206 Should a clock on starting up discover it is “better” that the present grandmaster, it assumes the grandmaster role and the previous grandmaster reverts to slave. The L30 qualification mechanism accepts a potential mas- ter clock as a new grandmaster, when in a four-second interval it has received three announce messages from it, all better than the present grandmaster clock and better than any other announce in this interval.
  • Page 207 Ethernet switch it is connected to is 9 000 ns and the that the delay from the switch to the relay is 11 000 ns, then the mean delay is 10 000 ns, and the path delay asymmetry is 11000 - 10000 = +1000 ns. GE Multilin L30 Line Current Differential System 5-67...
  • Page 208 L30 clock is closely synchronized with the SNTP/NTP server. It takes up to two minutes for the L30 to signal an SNTP self-test error if the server is offline.
  • Page 209: Fault Reports

    MESSAGE Z0 ANGLE: 75° The L30 relay supports one fault report and an associated fault locator. The signal source and trigger condition, as well as the characteristics of the line or feeder, are entered in this menu. The fault report stores data, in non-volatile memory, pertinent to an event when triggered. The captured data contained in the FaultReport.txt file includes:...
  • Page 210 “I0”. The magnitude is to be entered in secondary ohms. This impedance is an average system equivalent behind the relay. It can be calculated as zero-sequence Thevenin impedance at the local bus with the protected line/feeder 5-70 L30 Line Current Differential System GE Multilin...
  • Page 211: Oscillography

    TRIGGER SOURCE can be any FlexLogic parameter (element state, contact input, virtual output, and so on). The relay sampling rate is 64 sam- ples per cycle. GE Multilin L30 Line Current Differential System 5-71...
  • Page 212 All eight CT/VT module channels are stored in the oscillography file. The CT/VT module channels are named as follows: <slot_letter><terminal_number>—<I or V><phase A, B, or C, or 4th input> 5-72 L30 Line Current Differential System GE Multilin...
  • Page 213: Data Logger

    The relay automatically partitions the available memory between the channels in use. Exam- ple storage capacities for a system frequency of 60 Hz are shown in the following table. GE Multilin L30 Line Current Differential System 5-73...
  • Page 214 – entering this number via the relay keypad will cause the corresponding parameter to be displayed. • DATA LOGGER CONFIG: This display presents the total amount of time the Data Logger can record the channels not selected to “Off” without over-writing old data. 5-74 L30 Line Current Differential System GE Multilin...
  • Page 215: User-programmable Leds

    The test responds to the position and rising edges of the control input defined by the set- LED TEST CONTROL ting. The control pulses must last at least 250 ms to take effect. The following diagram explains how the test is executed. GE Multilin L30 Line Current Differential System 5-75...
  • Page 216 2. Once stage 2 has started, the pushbutton can be released. When stage 2 is completed, stage 3 will automatically start. The test may be aborted at any time by pressing the pushbutton. 5-76 L30 Line Current Differential System GE Multilin...
  • Page 217 AR ENABLED LED 10 operand BREAKER 1 CLOSED LED 22 operand AR DISABLED LED 11 operand BREAKER 1 TROUBLE LED 23 operand AR RIP LED 12 operand LED 24 operand AR LO GE Multilin L30 Line Current Differential System 5-77...
  • Page 218: User-programmable Self-tests

    There are three standard control pushbuttons, labeled USER 1, USER 2, and USER 3, on the standard and enhanced front panels. These are user-programmable and can be used for various applications such as performing an LED test, switching setting groups, and invoking and scrolling though user-programmable displays. 5-78 L30 Line Current Differential System GE Multilin...
  • Page 219 The location of the control pushbuttons are shown in the following figures. Control pushbuttons 842813A1.CDR Figure 5–10: CONTROL PUSHBUTTONS (ENHANCED FACEPLATE) An additional four control pushbuttons are included on the standard faceplate when the L30 is ordered with the 12 user-pro- grammable pushbutton option. STATUS EVENT CAUSE...
  • Page 220 SYSTEM SETUP/ BREAKERS/BREAKER 1/ BREAKER 1 PUSHBUTTON CONTROL Enabled=1 TIMER FLEXLOGIC OPERAND SYSTEM SETUP/ BREAKERS/BREAKER 2/ CONTROL PUSHBTN 1 ON 100 msec BREAKER 2 PUSHBUTTON CONTROL 842010A2.CDR Enabled=1 Figure 5–12: CONTROL PUSHBUTTON LOGIC 5-80 L30 Line Current Differential System GE Multilin...
  • Page 221: User-programmable Pushbuttons

    MESSAGE EVENTS: Disabled The L30 is provided with this optional feature, specified as an option at the time of ordering. Using the order code for your device, see the order codes in chapter 2 for details. User-programmable pushbuttons provide an easy and error-free method of entering digital state (on, off) information. The number depends on the front panel ordered.
  • Page 222 FlexLogic, the pulse duration is specified by the only. The time the operand remains PUSHBTN 1 DROP-OUT TIME assigned to the setting remains On has no effect on the pulse duration. PUSHBTN 1 SET 5-82 L30 Line Current Differential System GE Multilin...
  • Page 223 PUSHBTN 1 LED CTL: This setting assigns the FlexLogic operand serving to drive the front panel pushbutton LED. If this setting is “Off”, then LED operation is directly linked to the operand. PUSHBUTTON 1 ON GE Multilin L30 Line Current Differential System 5-83...
  • Page 224 PUSHBUTTON 1 EVENTS: If this setting is enabled, each user-programmable pushbutton state change is logged as an event into the event recorder. The figures show the user-programmable pushbutton logic. Figure 5–15: USER-PROGRAMMABLE PUSHBUTTON LOGIC (Sheet 1 of 2) 5-84 L30 Line Current Differential System GE Multilin...
  • Page 225: Flex State Parameters

    PATH: SETTINGS PRODUCT SETUP FLEX STATE PARAMETERS Range: FlexLogic operand  FLEX STATE PARAMETER  PARAMETERS Range: FlexLogic operand PARAMETER MESSAGE Range: FlexLogic operand PARAMETER MESSAGE ↓ Range: FlexLogic operand PARAMETER 256: MESSAGE GE Multilin L30 Line Current Differential System 5-85...
  • Page 226: User-definable Displays

    INVOKE AND SCROLL play, not at the first user-defined display. The pulses must last for at least 250 ms to take effect. INVOKE AND SCROLL 5-86 L30 Line Current Differential System GE Multilin...
  • Page 227 While viewing a user display, press the ENTER key and then select the ‘Yes” option to remove the display from the user display list. Use the MENU key again to exit the user displays menu. GE Multilin L30 Line Current Differential System 5-87...
  • Page 228: Installation

    "Programmed" state. UNIT NOT PROGRAMMED setting allows the user to uniquely identify a relay. This name will appear on generated reports. RELAY NAME 5-88 L30 Line Current Differential System GE Multilin...
  • Page 229: Remote Resources Configuration

    Bricks. Remote resources settings configure the point-to-point connection between specific fiber optic ports on the L30 process card and specific Brick. The relay is then configured to measure spe- cific currents, voltages and contact inputs from those Bricks, and to control specific outputs.
  • Page 230: System Setup

    1 pu will operate on 1000 A primary. The same rule applies for current sums from CTs with different secondary taps (5 A and 1 A). 5-90 L30 Line Current Differential System GE Multilin...
  • Page 231: Power System

    ABC or ACB. CT and VT inputs on the relay, labeled as A, B, and C, must be con- nected to system phases A, B, and C for correct operation. GE Multilin L30 Line Current Differential System 5-91...
  • Page 232: Signal Sources

    FREQUENCY TRACKING frequency applications. NOTE The frequency tracking feature functions only when the L30 is in the “Programmed” mode. If the L30 is “Not Pro- grammed”, then metering values are available but can exhibit significant errors. NOTE The nominal system frequency should be selected as 50 Hz or 60 Hz only. The FREQUENCY AND PHASE REFERENCE setting, used as a reference for calculating all angles, must be identical for all terminals.
  • Page 233 CUT-OFF LEVEL _1 - _1’ >2*CUT-OFF FLEXLOGIC OPERAND _2 - _2’ >2*CUT-OFF SRC 6 50DD OP _0 - _0’ >2*CUT-OFF Where ’ is 2 cycles old 827092A3.CDR Figure 5–18: DISTURBANCE DETECTOR LOGIC DIAGRAM GE Multilin L30 Line Current Differential System 5-93...
  • Page 234 Figure 5–19: EXAMPLE USE OF SOURCES Y LV D HV SRC 1 SRC 2 SRC 3 Phase CT F1+F5 None Ground CT None None Phase VT None None Aux VT None None 5-94 L30 Line Current Differential System GE Multilin...
  • Page 235: Power System

    See page 5-100.  TRANSFORMER Any changes to the L30 power system settings change the protection system configuration. As such, the 87L pro- tection at all L30 protection system terminals must be temporarily disabled to allow the relays to acknowledge the NOTE new settings.
  • Page 236 Charging current compensation calculations should be performed for an arrangement where the VTs are con- nected to the line side of the circuit; otherwise, opening the breaker at one end of the line will cause a calcula- tion error. NOTE 5-96 L30 Line Current Differential System GE Multilin...
  • Page 237 LOCAL (TERMINAL 1 and TERMINAL 2) ID NUMBER: In installations using multiplexers or modems for communica- tion, it is desirable to ensure the data used by the relays protecting a given line comes from the correct relays. The L30 performs this check by reading the ID number contained in the messages sent by transmitting relays and comparing this ID to the programmed correct ID numbers by the receiving relays.
  • Page 238 • BLOCK GPS TIME REF: This setting signals to the L30 that the time reference is not valid. The time reference may be not accurate due to problems with the GPS receiver. The user must to be aware of the case when a GPS satellite receiver loses its satellite signal and reverts to its own calibrated crystal oscillator.
  • Page 239 5 SETTINGS 5.4 SYSTEM SETUP Figure 5–21: CHANNEL ASYMMETRY COMPENSATION LOGIC GE Multilin L30 Line Current Differential System 5-99...
  • Page 240 “None”). Only one in-zone transformer is allowed for both two-terminal and three-terminal applications. Enabling in- zone transformer functionality forces the L30 to automatically remove the zero-sequence component from all terminals currents. It also disables ground differential 87LG functionality and zero-sequence current removal functionality defined by the setting.
  • Page 241: Breakers

    Range: 0.000 to 65.535 s in steps of 0.001 MANUAL CLOSE RECAL1 MESSAGE TIME: 0.000 s Range: FlexLogic operand BREAKER 1 OUT OF SV: MESSAGE Range: Disabled, Enabled BREAKER 1 EVENTS: MESSAGE Disabled GE Multilin L30 Line Current Differential System 5-101...
  • Page 242 1. The number of breaker control elements is dependent on the number of CT/VT modules specified with the L30. The follow- ing settings are available for each breaker control element.
  • Page 243 5 SETTINGS 5.4 SYSTEM SETUP Figure 5–23: DUAL BREAKER CONTROL SCHEME LOGIC (Sheet 1 of 2) IEC 61850 functionality is permitted when the L30 is in “Programmed” mode and not in the local control mode. NOTE GE Multilin L30 Line Current Differential System...
  • Page 244 Note that IEC 61850 commands are event-driven and dwell time for these is one protection pass only. If you want to main- tain the close/open command for a certain time, do so either on the contact outputs using the "Seal-in" setting or in Flex- Logic. 5-104 L30 Line Current Differential System GE Multilin...
  • Page 245: Disconnect Switches

    SWITCH 1 FUNCTION: This setting enables and disables the operation of the disconnect switch element. • SWITCH 1 NAME: Assign a user-defined name (up to six characters) to the disconnect switch. This name will be used in flash messages related to disconnect switch 1. GE Multilin L30 Line Current Differential System 5-105...
  • Page 246 SWITCH 1 ALARM DELAY: This setting specifies the delay interval during which a disagreement of status among the pole position tracking operands will not declare a pole disagreement. This allows for non-simultaneous operation of the poles. IEC 61850 functionality is permitted when the L30 is in “Programmed” mode and not in the local control mode. NOTE 5-106...
  • Page 247 5 SETTINGS 5.4 SYSTEM SETUP Figure 5–25: DISCONNECT SWITCH SCHEME LOGIC GE Multilin L30 Line Current Differential System 5-107...
  • Page 248: Flexcurves

    15.0 0.48 0.88 15.5 0.50 0.90 16.0 0.52 0.91 16.5 0.54 0.92 17.0 0.56 0.93 17.5 0.58 0.94 18.0 0.60 0.95 18.5 0.62 0.96 19.0 0.64 0.97 19.5 0.66 0.98 10.0 20.0 5-108 L30 Line Current Differential System GE Multilin...
  • Page 249 The multiplier and adder settings only affect the curve portion of the characteristic and not the MRT and HCT set- tings. The HCT settings override the MRT settings for multiples of pickup greater than the HCT ratio. NOTE GE Multilin L30 Line Current Differential System 5-109...
  • Page 250 EnerVista UR Setup software generates an error message and discards the proposed changes. NOTE e) STANDARD RECLOSER CURVES The standard recloser curves available for the L30 are displayed in the following graphs. 5-110 L30 Line Current Differential System...
  • Page 251 842723A1.CDR Figure 5–29: RECLOSER CURVES GE101 TO GE106 GE142 GE138 GE120 GE113 0.05 7 8 9 10 12 CURRENT (multiple of pickup) 842725A1.CDR Figure 5–30: RECLOSER CURVES GE113, GE120, GE138 AND GE142 GE Multilin L30 Line Current Differential System 5-111...
  • Page 252 Figure 5–31: RECLOSER CURVES GE134, GE137, GE140, GE151 AND GE201 GE152 GE141 GE131 GE200 7 8 9 10 12 CURRENT (multiple of pickup) 842728A1.CDR Figure 5–32: RECLOSER CURVES GE131, GE141, GE152, AND GE200 5-112 L30 Line Current Differential System GE Multilin...
  • Page 253 Figure 5–33: RECLOSER CURVES GE133, GE161, GE162, GE163, GE164 AND GE165 GE132 GE139 GE136 GE116 0.05 GE117 GE118 0.02 0.01 7 8 9 10 12 CURRENT (multiple of pickup) 842726A1.CDR Figure 5–34: RECLOSER CURVES GE116, GE117, GE118, GE132, GE136, AND GE139 GE Multilin L30 Line Current Differential System 5-113...
  • Page 254 Figure 5–35: RECLOSER CURVES GE107, GE111, GE112, GE114, GE115, GE121, AND GE122 GE202 GE135 GE119 7 8 9 10 12 CURRENT (multiple of pickup) 842727A1.CDR Figure 5–36: RECLOSER CURVES GE119, GE135, AND GE202 5-114 L30 Line Current Differential System GE Multilin...
  • Page 255: Phasor Measurement Unit

    See page 5-135.  CONFIGURATION The L30 is provided with an optional phasor measurement unit feature. This feature is specified as a soft- ware option at the time of ordering. The number of phasor measurement units available can also depend on this option.
  • Page 256 NONE, which within the standard is classified as PRES OR UNKNOWN under the Calculation Method - ClcMth. Each Logical Device PMU supports one MxxMMXU, MxxMSQI, PxxxMMXU , PxxxMSQI, NxxMMXU, and one NxxMSQI logical node. Figure 5–39: LOGICAL NODES SUPPORTED IN EACH LOGICAL DEVICE 5-116 L30 Line Current Differential System GE Multilin...
  • Page 257 C37.118 STN and IDCode is to be mapped as a concatenated value in the (d)escription field of LPL CDC of the NamPlt DO in LLN0. The mapping is implemented as STN-IDCode (text string). GE Multilin L30 Line Current Differential System 5-117...
  • Page 258 The aggregators allow the aggregation of phasors from multiple PMUs (with the same reporting rate) into a single custom data set to optimize bandwidth when streaming. Figure 5–41: EXAMPLE OF AGGREGATOR DATA SETS 5-118 L30 Line Current Differential System GE Multilin...
  • Page 259 CONFIGURATION EXAMPLE: CFG-2 BASED CONFIGURATION (USING IEC 61850-90-5) The L30 is expected to send the CFG-2 file (IEEE C37.118 config. file) upon request from the upstream synchrophasor devices (for example, P30) without stopping R-SV multicasting, as shown in the figure below. The primary domain control- ler (PDC) does not need to use a stop/start data stream command if the UR protocol is set to IEC 61850-90-5 prior to requesting the configuration via CFG-2 (IEEE C37.118 config.
  • Page 260 Range: 1 to 65534 in steps of 1 PMU 1 IDCODE: MESSAGE Range: 32-character ASCII string truncated to 16 PMU 1 STN: MESSAGE characters if mapped into C37.118 Default: GE-UR-PMU GE-UR-PMU Range: Available signal sources PMU 1 SIGNAL SOURCE: MESSAGE SRC 1...
  • Page 261 For a system frequency of 60 Hz (50 Hz), the L30 generates a reporting mismatch message if the selected rate is not set as 10 Hz, 12 Hz, 15 Hz, 20 Hz, 30 Hz, 60 Hz, or 120 Hz (or 10 Hz, 25 Hz, 50 Hz or 100 Hz when the system frequency is 50 Hz) when entered via the keypad or software;...
  • Page 262 This setting complies with bit-1 of the FORMAT field of the IEEE C37.118 configuration frame. This setting applies to synchrophasors only; the user-selectable FlexAnalog channels are always transmitted as 16-bit integer values. 5-122 L30 Line Current Differential System GE Multilin...
  • Page 263 As per IEC 61850-6 standard specification, the PMU LD Name is the concatenated combination (to total 64 charac- ters) of IED Name (specified in IEC 61850 Server Settings) appended with PMU X LDINST string. NOTE GE Multilin L30 Line Current Differential System 5-123...
  • Page 264 VTs, CTs, and cabling. The setting values are effectively added to the measured angles. Therefore, enter a positive correction of the secondary signal lags the true signal; and negative value if the secondary signal leads the true signal. 5-124 L30 Line Current Differential System GE Multilin...
  • Page 265 When receiving synchrophasor data at multiple locations, with possibly different reference nodes, it can be more beneficial to allow the central locations to perform the compensation of sequence voltages. This setting applies to PMU data only. The L30 calculates symmetrical voltages independently for protection and control purposes without applying this correction.
  • Page 266 DPO TIME: 1.00 s Range: FlexLogic operand PMU 1 FREQ TRIG BLK: MESSAGE Range: Self-Reset, Latched, Disabled PMU 1 FREQ TRIGGER MESSAGE TARGET: Self-Reset Range: Enabled, Disabled PMU 1 FREQ TRIGGER MESSAGE EVENTS: Disabled 5-126 L30 Line Current Differential System GE Multilin...
  • Page 267 L30 standards. This element requires that the frequency be above the minimum measurable value. If the frequency is below this value, such as when the circuit is de-energized, the trigger drops out.
  • Page 268 This element responds to elevated current. The trigger responds to the phase current signal of the phasor measurement unit (PMU) source. All current channel (A, B, and C) are processed independently and could trigger the recorder. 5-128 L30 Line Current Differential System GE Multilin...
  • Page 269 1 pu is a product of 1 pu voltage and 1 pu current, or the product of nominal secondary voltage, the VT ratio and the nominal primary current. For the three-phase power, 1 pu is three times that for a single-phase power. The comparator applies a 3% hysteresis. GE Multilin L30 Line Current Differential System 5-129...
  • Page 270 DPO TIME: 1.00 s Range: FlexLogic operand PMU 1 df/dt TRG BLK: MESSAGE Range: Self-Reset, Latched, Disabled PMU 1 df/dt TRIGGER MESSAGE TARGET: Self-Reset Range: Enabled, Disabled PMU 1 df/dt TRIGGER MESSAGE EVENTS: Disabled 5-130 L30 Line Current Differential System GE Multilin...
  • Page 271 PMU 1 df/dt TRIGGER DPO TIME: This setting can be used to extend the trigger after the situation returned to nor- mal. This setting is of particular importance when using the recorder in the forced mode (recording as long as the trig- gering condition is asserted). GE Multilin L30 Line Current Differential System 5-131...
  • Page 272 5.4 SYSTEM SETUP 5 SETTINGS Figure 5–48: RATE OF CHANGE OF FREQUENCY TRIGGER SCHEME LOGIC 5-132 L30 Line Current Differential System GE Multilin...
  • Page 273  37.118 AGGR 1 PMU AGGREGATOR 1  CONFIGURATION TCP PORT: 4712 Range: 1 to 65534 PMU AGGREGATOR 1 MESSAGE UDP PORT: 4713 Range: Disabled, Enabled PMU AGGREGATOR 1 MESSAGE PDC CONTROL: Disabled GE Multilin L30 Line Current Differential System 5-133...
  • Page 274 AGTR1 PDC CNTRL 3 Phasor data concentrator asserts control bit 3 as received via the network. ↓ as above AGTR1 PDC CNTRL 16 Phasor data concentrator asserts control bit 16, as received via the network. 5-134 L30 Line Current Differential System GE Multilin...
  • Page 275 Range: 0 to 7 MSVCB 1 PRIORITY: MESSAGE Range: 0 to 252 MSVCB 1 IP CLASS: MESSAGE Range: 0 to 4095 MSVCB 1 VID: MESSAGE Range: 0 to 16383 MSVCB 1 APPID: MESSAGE GE Multilin L30 Line Current Differential System 5-135...
  • Page 276 The range is 0 to 2. Shaded settings in the table are not supported in firmware 7.0. ENUMERATION AUTHENTICATION ENCRYPTION NOTE 5-136 L30 Line Current Differential System GE Multilin...
  • Page 277 5 SETTINGS 5.4 SYSTEM SETUP ENUMERATION AUTHENTICATION ENCRYPTION GE Multilin L30 Line Current Differential System 5-137...
  • Page 278: Flexlogic

    Figure 5–50: UR ARCHITECTURE OVERVIEW The states of all digital signals used in the L30 are represented by flags (or FlexLogic operands, which are described later in this section). A digital “1” is represented by a 'set' flag. Any external contact change-of-state can be used to block an ele- ment from operating, as an input to a control feature in a FlexLogic equation, or to operate a contact output.
  • Page 279 Some types of operands are present in the relay in multiple instances; e.g. contact and remote inputs. These types of oper- ands are grouped together (for presentation purposes only) on the faceplate display. The characteristics of the different types of operands are listed in the table below. Table 5–16: L30 FLEXLOGIC OPERAND TYPES OPERAND TYPE STATE...
  • Page 280 Exceeded maximum CRC error threshold on channel 2 87L DIFF CH1 ID FAIL The ID check for a peer L30 on channel 1 has failed 87L DIFF CH2 ID FAIL The ID check for a peer L30 on channel 2 has failed...
  • Page 281 5 SETTINGS 5.5 FLEXLOGIC Table 5–17: L30 FLEXLOGIC OPERANDS (Sheet 2 of 7) OPERAND TYPE OPERAND SYNTAX OPERAND DESCRIPTION ELEMENT BKR FAIL 1 RETRIPA Breaker failure 1 re-trip phase A (only for 1-pole schemes) Breaker failure BKR FAIL 1 RETRIPB...
  • Page 282 5.5 FLEXLOGIC 5 SETTINGS Table 5–17: L30 FLEXLOGIC OPERANDS (Sheet 3 of 7) OPERAND TYPE OPERAND SYNTAX OPERAND DESCRIPTION ELEMENT: GROUND TOC1 PKP Ground time overcurrent 1 has picked up Ground time GROUND TOC1 OP Ground time overcurrent 1 has operated...
  • Page 283 5 SETTINGS 5.5 FLEXLOGIC Table 5–17: L30 FLEXLOGIC OPERANDS (Sheet 4 of 7) OPERAND TYPE OPERAND SYNTAX OPERAND DESCRIPTION ELEMENT: PHASE OV1 PKP At least one phase of overvoltage 1 has picked up Phase overvoltage PHASE OV1 OP At least one phase of overvoltage 1 has operated...
  • Page 284 5.5 FLEXLOGIC 5 SETTINGS Table 5–17: L30 FLEXLOGIC OPERANDS (Sheet 5 of 7) OPERAND TYPE OPERAND SYNTAX OPERAND DESCRIPTION ELEMENT: SETTING GROUP ACT 1 Setting group 1 is active Setting group SETTING GROUP ACT 2 Setting group 2 is active...
  • Page 285 5 SETTINGS 5.5 FLEXLOGIC Table 5–17: L30 FLEXLOGIC OPERANDS (Sheet 6 of 7) OPERAND TYPE OPERAND SYNTAX OPERAND DESCRIPTION FIXED OPERANDS Logic = 0. Does nothing and may be used as a delimiter in an equation list; used as ‘Disable’ by other features.
  • Page 286 5.5 FLEXLOGIC 5 SETTINGS Table 5–17: L30 FLEXLOGIC OPERANDS (Sheet 7 of 7) OPERAND TYPE OPERAND SYNTAX OPERAND DESCRIPTION PASSWORD ACCESS LOC SETG OFF Asserted when local setting access is disabled SECURITY ACCESS LOC SETG ON Asserted when local setting access is enabled...
  • Page 287: Flexlogic Rules

    A timer operator (for example, "TIMER 1") or virtual output assignment (for example, " = Virt Op 1") may only be used once. If this rule is broken, a syntax error will be declared. GE Multilin L30 Line Current Differential System 5-147...
  • Page 288: Flexlogic Evaluation

    (i.e. Virtual Output 3). The final output must also be assigned to a virtual output as virtual output 4, which will be programmed in the contact output section to oper- ate relay H1 (that is, contact output H1). 5-148 L30 Line Current Differential System GE Multilin...
  • Page 289 Until accustomed to using FlexLogic, it is suggested that a worksheet with a series of cells marked with the arbitrary parameter numbers be prepared, as shown below. GE Multilin L30 Line Current Differential System 5-149...
  • Page 290 99: The final output of the equation is virtual output 4 which is parameter “= Virt Op 4". 98: The operator preceding the output is timer 2, which is operand “TIMER 2". Note that the settings required for the timer are established in the timer programming section. 5-150 L30 Line Current Differential System GE Multilin...
  • Page 291 It is now possible to check that the selection of parameters will produce the required logic by converting the set of parame- ters into a logic diagram. The result of this process is shown below, which is compared to the logic for virtual output 4 dia- gram as a check. GE Multilin L30 Line Current Differential System 5-151...
  • Page 292 In the expression above, the virtual output 4 input to the four-input OR is listed before it is created. This is typical of a form of feedback, in this case, used to create a seal-in effect with the latch, and is correct. 5-152 L30 Line Current Differential System GE Multilin...
  • Page 293: Flexlogic Equation Editor

    TIMER 1 PICKUP DELAY: Sets the time delay to pickup. If a pickup delay is not required, set this function to "0". • TIMER 1 DROPOUT DELAY: Sets the time delay to dropout. If a dropout delay is not required, set this function to "0". GE Multilin L30 Line Current Differential System 5-153...
  • Page 294: Flexelements

    The element can be programmed to respond either to a signal level or to a rate-of-change (delta) over a pre-defined period of time. The output operand is asserted when the operating signal is higher than a threshold or lower than a threshold as per user's choice. 5-154 L30 Line Current Differential System GE Multilin...
  • Page 295 The FLEXELEMENT 1 DIRECTION following figure explains the application of the FLEXELEMENT 1 DIRECTION FLEXELEMENT 1 PICKUP FLEXELEMENT 1 HYS- settings. TERESIS GE Multilin L30 Line Current Differential System 5-155...
  • Page 296 Figure 5–59: FLEXELEMENT DIRECTION, PICKUP, AND HYSTERESIS In conjunction with the setting the element could be programmed to provide two extra charac- FLEXELEMENT 1 INPUT MODE teristics as shown in the figure below. 5-156 L30 Line Current Differential System GE Multilin...
  • Page 297 × cycle BASE = 2000 kA (Brk X Acc Arc Amp A, B, and C) BREAKER ARCING AMPS BASE = 1 kA × cycle (Brk X Arc Amp A, B, and C) GE Multilin L30 Line Current Differential System 5-157...
  • Page 298 “Delta”. FLEXELEMENT 1 COMP MODE This setting specifies the pickup delay of the element. The setting FLEXELEMENT 1 PKP DELAY FLEXELEMENT 1 RST DELAY specifies the reset delay of the element. 5-158 L30 Line Current Differential System GE Multilin...
  • Page 299: Non-volatile Latches

    LATCH N LATCH N LATCH N TYPE RESET Reset Dominant Previous Previous State State Dominant Previous Previous State State Figure 5–61: NON-VOLATILE LATCH OPERATION TABLE (N = 1 to 16) AND LOGIC GE Multilin L30 Line Current Differential System 5-159...
  • Page 300: Grouped Elements

    GROUPED ELEMENTS SETTING GROUP 1(6) LINE DIFFERENTIAL... CURRENT DIFFERENTIAL Range: Disabled, Enabled  CURRENT CURRENT DIFF  DIFFERENTIAL FUNCTION: Disabled Range: SRC 1, SRC 2 CURRENT DIFF SIGNAL MESSAGE SOURCE 1: SRC 1 5-160 L30 Line Current Differential System GE Multilin...
  • Page 301 In 2-terminal, two-channel applications use the same value for both TAP 1 and TAP 2 settings, and in 3-terminals accordingly remote 1 and 2 CTs. The setting value is determined by CT / CT for local and remote termi- prim_rem prim_loc GE Multilin L30 Line Current Differential System 5-161...
  • Page 302 If set to “Per phase”, the L30 performs inrush inhibit individually in each phase. – If set to “2-out-of-3”, the L30 checks second harmonic level in all three phases individually. If any two phases establish an inhibiting condition, then the remaining phase is restrained automatically.
  • Page 303 5.6 GROUPED ELEMENTS For the current differential element to function properly, it is imperative that all L30 devices on the protected line have exactly identical firmware revisions. For example, revision 5.62 in only compatible with 5.62, not 5.61 or 5.63.
  • Page 304 5.6 GROUPED ELEMENTS 5 SETTINGS Figure 5–62: CURRENT DIFFERENTIAL SCHEME LOGIC 5-164 L30 Line Current Differential System GE Multilin...
  • Page 305 The assigned current element should be mapped to appropriate output contact(s) to trip the stub bus breakers. It should be blocked unless disconnect is open. To prevent 87L tripping from remote L30 relays still protecting the line, the auxiliary contact of line disconnect switch (logic “1” when line switch is open) should be assigned to block the local 87L function by using the setting.
  • Page 306: Phase Current

     PHASE IOC3 MESSAGE See page 5-174.   PHASE IOC4 MESSAGE See page 5-174.   PHASE MESSAGE See page 5–175.  DIRECTIONAL 1  PHASE MESSAGE See page 5–175.  DIRECTIONAL 2 5-166 L30 Line Current Differential System GE Multilin...
  • Page 307 5.6 GROUPED ELEMENTS b) INVERSE TIME OVERCURRENT CHARACTERISTICS The inverse time overcurrent curves used by the time overcurrent elements are the IEEE, IEC, GE Type IAC, and I t stan- dard curve shapes. This allows for simplified coordination with downstream devices.
  • Page 308 4.827 38.634 22.819 14.593 11.675 10.130 9.153 8.470 7.960 7.562 7.241 51.512 30.426 19.458 15.567 13.507 12.204 11.294 10.614 10.083 9.654 10.0 64.390 38.032 24.322 19.458 16.883 15.255 14.117 13.267 12.604 12.068 5-168 L30 Line Current Differential System GE Multilin...
  • Page 309 1.835 1.067 0.668 0.526 0.451 0.404 0.371 0.346 0.327 0.311 0.80 2.446 1.423 0.890 0.702 0.602 0.538 0.494 0.461 0.435 0.415 1.00 3.058 1.778 1.113 0.877 0.752 0.673 0.618 0.576 0.544 0.518 GE Multilin L30 Line Current Differential System 5-169...
  • Page 310 = characteristic constant, and T = reset time in seconds (assuming energy capacity is 100% RESET is “Timed”) RESET Table 5–26: GE TYPE IAC INVERSE TIME CURVE CONSTANTS IAC CURVE SHAPE IAC Extreme Inverse 0.0040 0.6379 0.6200 1.7872 0.2461...
  • Page 311 = Reset Time in seconds (assuming energy capacity is 100% and RESET: Timed) RESET RECLOSER CURVES: The L30 uses the FlexCurve feature to facilitate programming of 41 recloser curves. See the FlexCurve section in this chapter for details. GE Multilin...
  • Page 312 ‘Mvr’ times the setting. If the voltage restraint feature PHASE TOC1 PICKUP is disabled, the pickup level always remains at the setting value. 5-172 L30 Line Current Differential System GE Multilin...
  • Page 313 5 SETTINGS 5.6 GROUPED ELEMENTS Phase-Phase Voltage ÷ VT Nominal Phase-phase Voltage 818784A4.CDR Figure 5–64: PHASE TIME OVERCURRENT VOLTAGE RESTRAINT CHARACTERISTIC Figure 5–65: PHASE TIME OVERCURRENT 1 SCHEME LOGIC GE Multilin L30 Line Current Differential System 5-173...
  • Page 314 The input current is the fundamental phasor magnitude. For timing curves, see the publication Instan- taneous Overcurrent Element Response to Saturated Waveforms in UR-Series Relays (GET-8400A). Figure 5–66: PHASE INSTANTANEOUS OVERCURRENT 1 SCHEME LOGIC 5-174 L30 Line Current Differential System GE Multilin...
  • Page 315 +90° Phasors for Phase A Polarization: × VPol = VBC (1/_ECA) = polarizing voltage IA = operating current ECA = Element Characteristic Angle at 30° 827800A2.CDR Figure 5–67: PHASE A DIRECTIONAL POLARIZATION GE Multilin L30 Line Current Differential System 5-175...
  • Page 316 When set to "Yes", the directional element blocks the operation of any phase overcurrent element under directional control, when voltage memory expires; when set to "No", the directional element allows tripping of phase overcurrent elements under directional control. 5-176 L30 Line Current Differential System GE Multilin...
  • Page 317: Neutral Current

     NEUTRAL TOC1 See page 5-178.    NEUTRAL TOC2 MESSAGE See page 5-178.   NEUTRAL IOC1 MESSAGE See page 5-179.  ↓  NEUTRAL IOC4 MESSAGE See page 5-179.  GE Multilin L30 Line Current Differential System 5-177...
  • Page 318 The neutral current input value is a quantity calculated as 3Io from the phase currents and may be programmed as fundamental phasor magnitude or total waveform RMS magnitude as required by the application. 5-178 L30 Line Current Differential System GE Multilin...
  • Page 319 × Kx I_1 where K 1 16 ⁄ (EQ 5.18) – The positive-sequence restraint allows for more sensitive settings by counterbalancing spurious zero-sequence currents resulting from GE Multilin L30 Line Current Differential System 5-179...
  • Page 320 Range: 0.006 to 30.000 pu in steps of 0.001 NEUTRAL DIR OC1 FWD MESSAGE PICKUP: 0.050 pu Range: 40 to 90° in steps of 1 NEUTRAL DIR OC1 REV MESSAGE LIMIT ANGLE: 90° 5-180 L30 Line Current Differential System GE Multilin...
  • Page 321 –V_0 + Z_offset × I_0 I_0 × 1∠ECA = 3 × (|I_0|) if |I | ≤ 0.8 pu Forward Dual, Dual-V, Dual-I –V_0 + Z_offset × I_0 –I_0 × 1∠ECA Reverse –I_0 GE Multilin L30 Line Current Differential System 5-181...
  • Page 322 If “Voltage” polarizing is selected, the element uses the zero-sequence voltage angle for polarization. The user can use either the zero-sequence voltage V_0 calculated from the phase voltages, or the zero-sequence voltage supplied externally as the auxiliary voltage V_X, both from the NEUTRAL DIR OC1 SOURCE 5-182 L30 Line Current Differential System GE Multilin...
  • Page 323 NEUTRAL DIR OC1 FWD ECA: This setting defines the characteristic angle (ECA) for the forward direction in the "Voltage" polarizing mode. The "Current" polarizing mode uses a fixed ECA of 0°. The ECA in the reverse direction is the angle set for the forward direction shifted by 180°. GE Multilin L30 Line Current Differential System 5-183...
  • Page 324 When selecting this setting it must be kept in mind that the design uses a positive-sequence restraint technique for the “Calculated 3I0” mode of operation. Figure 5–72: NEUTRAL DIRECTIONAL OVERCURRENT LOGIC 5-184 L30 Line Current Differential System GE Multilin...
  • Page 325: Ground Current

    These elements measure the current that is connected to the ground channel of a CT/VT module. The conversion range of a standard channel is from 0.02 to 46 times the CT rating. NOTE GE Multilin L30 Line Current Differential System 5-185...
  • Page 326 These elements measure the current that is connected to the ground channel of a CT/VT module. The conversion range of a standard channel is from 0.02 to 46 times the CT rating. NOTE 5-186 L30 Line Current Differential System GE Multilin...
  • Page 327: Negative Sequence Current

    When the element is blocked, the time accumulator resets according to the reset characteristic. For example, if the element reset characteristic is set to “Instanta- neous” and the element is blocked, the time accumulator is cleared immediately. GE Multilin L30 Line Current Differential System 5-187...
  • Page 328 ⋅ 1 8 ⁄ K I_1 where K (EQ 5.21) – The positive-sequence restraint allows for more sensitive settings by counterbalancing spurious negative-sequence cur- rents resulting from: 5-188 L30 Line Current Differential System GE Multilin...
  • Page 329 The operating quantity depends on the way the test currents are injected into the relay (single-phase injection: 0.2917 I ⋅ ; three-phase injection, opposite rotation: injected injected Figure 5–76: NEGATIVE SEQUENCE IOC1 SCHEME LOGIC GE Multilin L30 Line Current Differential System 5-189...
  • Page 330: Breaker Failure (ansi 50bf)

    Range: 0.001 to 30.000 pu in steps of 0.001 BF1 N AMP HISET MESSAGE PICKUP: 1.050 pu Range: 0.001 to 30.000 pu in steps of 0.001 BF1 PH AMP LOSET MESSAGE PICKUP: 1.050 pu 5-190 L30 Line Current Differential System GE Multilin...
  • Page 331 GE Multilin L30 Line Current Differential System 5-191...
  • Page 332 BREAKER FAILURE TIMER No. 2 (±1/8 cycle) INITIATE (1/8 cycle) BREAKER FAILURE CURRENT DETECTOR PICKUP (1/8 cycle) BREAKER FAILURE OUTPUT RELAY PICKUP (1/4 cycle) FAULT cycles OCCURS 827083A6.CDR Figure 5–77: BREAKER FAILURE MAIN PATH SEQUENCE 5-192 L30 Line Current Differential System GE Multilin...
  • Page 333 In microprocessor relays this time is not significant. In L30 relays, which use a Fourier transform, the calculated current magnitude will ramp-down to zero one power frequency cycle after the current is interrupted, and this lag should be included in the overall margin duration, as it occurs after current interruption.
  • Page 334 Upon operation of the breaker failure element for a single pole trip command, a three-pole trip command should be given via output operand BKR FAIL 1 TRIP OP 5-194 L30 Line Current Differential System GE Multilin...
  • Page 335 5 SETTINGS 5.6 GROUPED ELEMENTS SINGLE-POLE BREAKER FAILURE, INITIATE Figure 5–79: SINGLE-POLE BREAKER FAILURE, TIMERS GE Multilin L30 Line Current Differential System 5-195...
  • Page 336 5.6 GROUPED ELEMENTS 5 SETTINGS Figure 5–80: THREE-POLE BREAKER FAILURE, INITIATE 5-196 L30 Line Current Differential System GE Multilin...
  • Page 337 5 SETTINGS 5.6 GROUPED ELEMENTS Figure 5–81: THREE-POLE BREAKER FAILURE, TIMERS GE Multilin L30 Line Current Differential System 5-197...
  • Page 338: Voltage Elements

    The time delay is adjustable from 0 to 600.00 seconds in steps of 0.01. The undervoltage elements can also be programmed to have an inverse time delay char- acteristic. 5-198 L30 Line Current Differential System GE Multilin...
  • Page 339 V = secondary voltage applied to the relay = pickup level pickup % of voltage pickup 842788A1.CDR Figure 5–82: INVERSE TIME UNDERVOLTAGE CURVES At 0% of pickup, the operating time equals the UNDERVOLTAGE DELAY setting. NOTE GE Multilin L30 Line Current Differential System 5-199...
  • Page 340 The minimum voltage setting selects the operating voltage below which the element is blocked (a setting of “0” will allow a dead source to be considered a fault condition). Figure 5–83: PHASE UNDERVOLTAGE1 SCHEME LOGIC 5-200 L30 Line Current Differential System GE Multilin...
  • Page 341 Figure 5–84: PHASE OVERVOLTAGE SCHEME LOGIC > × If the source VT is wye-connected, then the phase overvoltage pickup condition is Pickup for V and V NOTE GE Multilin L30 Line Current Differential System 5-201...
  • Page 342 The negative-sequence overvoltage element may be used to detect loss of one or two phases of the source, a reversed phase sequence of voltage, or a non-symmetrical system voltage condition. Figure 5–85: NEGATIVE-SEQUENCE OVERVOLTAGE SCHEME LOGIC 5-202 L30 Line Current Differential System GE Multilin...
  • Page 343 AUX UV1 EVENTS: MESSAGE Disabled The L30 contains one auxiliary undervoltage element for each VT bank. This element is intended for monitoring undervolt- age conditions of the auxiliary voltage. The selects the voltage level at which the time undervoltage ele- AUX UV1 PICKUP ment starts timing.
  • Page 344 AUX OV1 EVENTS: MESSAGE Disabled The L30 contains one auxiliary overvoltage element for each VT bank. This element is intended for monitoring overvoltage conditions of the auxiliary voltage. The nominal secondary voltage of the auxiliary voltage channel entered under SYSTEM ...
  • Page 345: Supervising Elements

    DD CONTROL LOGIC: This setting is used to prevent operation of I_0 and I_2 logic of disturbance detector during conditions such as single breaker pole being open which leads to unbalanced load current in single-pole tripping schemes. Breaker auxiliary contact can be used for such scheme. GE Multilin L30 Line Current Differential System 5-205...
  • Page 346 DD EVENTS bance on the system which may result in filling the events buffer and possible loss of valuable data. NOTE Figure 5–88: DISTURBANCE DETECTOR SCHEME LOGIC 5-206 L30 Line Current Differential System GE Multilin...
  • Page 347: Control Elements

    If more than one operate-type operand is required, it may be assigned directly from the trip bus menu. GE Multilin L30 Line Current Differential System 5-207...
  • Page 348 TRIP BUS 1 RESET: The trip bus output is reset when the operand assigned to this setting is asserted. Note that the operand is pre-wired to the reset gate of the latch, As such, a reset command the front panel interface or via RESET OP communications will reset the trip bus output. 5-208 L30 Line Current Differential System GE Multilin...
  • Page 349: Setting Groups

    GROUP 1 NAME: MESSAGE Range: up to 16 alphanumeric characters GROUP 2 NAME: MESSAGE ↓ Range: up to 16 alphanumeric characters GROUP 6 NAME: MESSAGE Range: Disabled, Enabled SETTING GROUP MESSAGE EVENTS: Disabled GE Multilin L30 Line Current Differential System 5-209...
  • Page 350 The assigned operand is used to control the “On” state of a particular settings group. VIRTUAL OUTPUT 1 5-210 L30 Line Current Differential System GE Multilin...
  • Page 351: Selector Switch

    SELECTOR 1 3BIT ACK: MESSAGE Range: Restore, Synchronize, Sync/Restore SELECTOR 1 POWER-UP MESSAGE MODE: Restore Range: Self-reset, Latched, Disabled SELECTOR 1 TARGETS: MESSAGE Self-reset Range: Disabled, Enabled SELECTOR 1 EVENTS: MESSAGE Disabled GE Multilin L30 Line Current Differential System 5-211...
  • Page 352 SELECTOR 1 3BIT A0, A1, and A2: These settings specify a three-bit control input of the selector. The three-bit con- trol word pre-selects the position using the following encoding convention: POSITION rest 5-212 L30 Line Current Differential System GE Multilin...
  • Page 353 The selector position pre-selected via the stepping up control input has not been confirmed before the time out. SELECTOR 1 BIT ALARM The selector position pre-selected via the three-bit control input has not been confirmed before the time out. GE Multilin L30 Line Current Differential System 5-213...
  • Page 354 3BIT A2 POS 1 POS 2 POS 3 POS 4 POS 5 POS 6 POS 7 BIT 0 BIT 1 BIT 2 STP ALARM BIT ALARM ALARM 842737A1.CDR Figure 5–92: TIME-OUT MODE 5-214 L30 Line Current Differential System GE Multilin...
  • Page 355 Make the following changes to selector switch element in the    SETTINGS CONTROL ELEMENTS SELECTOR SWITCH menu to assign control to user programmable pushbutton 1 and contact inputs 1 through 3: SELECTOR SWITCH 1 GE Multilin L30 Line Current Differential System 5-215...
  • Page 356 SELECTOR 1 BIT ALARM 3-bit position out SELECTOR 1 ALARM SELECTOR 1 PWR ALARM SELECTOR 1 BIT 0 SELECTOR 1 BIT 1 SELECTOR 1 BIT 2 842012A2.CDR Figure 5–94: SELECTOR SWITCH LOGIC 5-216 L30 Line Current Differential System GE Multilin...
  • Page 357: Underfrequency (ansi 81u)

    For example, UNDERFREQ 1 PICKUP if the system frequency is 60 Hz and the load shedding is required at 59.5 Hz, the setting will be 59.50 Hz. Figure 5–95: UNDERFREQUENCY SCHEME LOGIC GE Multilin L30 Line Current Differential System 5-217...
  • Page 358: Synchrocheck (ansi 25)

    ΔF. This time can be calculated by: ------------------------------- - (EQ 5.23) 360° ----------------- - × ΔF 2 ΔΦ × where: ΔΦ = phase angle difference in degrees; ΔF = frequency difference in Hz. 5-218 L30 Line Current Differential System GE Multilin...
  • Page 359 COMBINATION SOURCE Y SOURCE Z Phase VTs and Phase VTs and Phase Phase Auxiliary VT Auxiliary VT Phase VTs and Phase VT Phase Phase Auxiliary VT Phase VT Phase VT Phase Phase GE Multilin L30 Line Current Differential System 5-219...
  • Page 360 The relay will use the phase channel of a three-phase set of voltages if pro- grammed as part of that source. The relay will use the auxiliary voltage channel only if that channel is programmed as part of the Source and a three-phase set is not. 5-220 L30 Line Current Differential System GE Multilin...
  • Page 361 5 SETTINGS 5.7 CONTROL ELEMENTS Figure 5–96: SYNCHROCHECK SCHEME LOGIC GE Multilin L30 Line Current Differential System 5-221...
  • Page 362: Autoreclose (ansi 79)

    4.000 s Range: FlexLogic operand AR1 ADD DELAY 1: MESSAGE Range: 0.00 to 655.35 s in steps of 0.01 AR1 DELAY 1: MESSAGE 0.000 s Range: FlexLogic operand AR1 ADD DELAY 2: MESSAGE 5-222 L30 Line Current Differential System GE Multilin...
  • Page 363 Scheme lockout blocks all phases of the reclosing cycle, preventing automatic reclosure, if any of the following occurs: • The maximum shot number was reached. • A ‘Block’ input is in effect (for instance; Breaker Failure, bus differential protection operated, etc.). GE Multilin L30 Line Current Differential System 5-223...
  • Page 364 ‘reclose-in-progress’ state. If all condi- tions allowing a breaker closure are not satisfied when this time expires, the scheme goes to “Lockout”. This timer must be set to a delay less than the reset timer. NOTE 5-224 L30 Line Current Differential System GE Multilin...
  • Page 365 5 SETTINGS 5.7 CONTROL ELEMENTS Figure 5–97: AUTORECLOSURE SCHEME LOGIC (Sheet 1 of 2) GE Multilin L30 Line Current Differential System 5-225...
  • Page 366 5.7 CONTROL ELEMENTS 5 SETTINGS Figure 5–98: AUTORECLOSURE SCHEME LOGIC (Sheet 2 of 2) 5-226 L30 Line Current Differential System GE Multilin...
  • Page 367 5 SETTINGS 5.7 CONTROL ELEMENTS Figure 5–99: SINGLE SHOT AUTORECLOSING SEQUENCE - PERMANENT FAULT GE Multilin L30 Line Current Differential System 5-227...
  • Page 368: Digital Elements

    DIGITAL ELEMENT 1 RESET DELAY: Sets the time delay to reset. If a reset delay is not required, set to “0”. • DIGITAL ELEMENT 1 PICKUP LED: This setting enables or disabled the digital element pickup LED. When set to “Disabled”, the operation of the pickup LED is blocked. 5-228 L30 Line Current Differential System GE Multilin...
  • Page 369 Using the contact input settings, this input will be given an ID name, for example, “Cont Ip 1", and will be set “On” when the breaker is closed. The settings to use digital element 1 to monitor the breaker trip circuit are indicated below (EnerVista UR GE Multilin L30 Line Current Differential System 5-229...
  • Page 370 “Off”. In this case, the settings are as follows (EnerVista UR Setup example shown). Figure 5–102: TRIP CIRCUIT EXAMPLE 2 The wiring connection for two examples above is applicable to both form-A contacts with voltage monitoring and solid-state contact with voltage monitoring. NOTE 5-230 L30 Line Current Differential System GE Multilin...
  • Page 371: Digital Counters

    –2,147,483,648 counts, the counter will rollover to +2,147,483,647. • COUNTER 1 BLOCK: Selects the FlexLogic operand for blocking the counting operation. All counter operands are blocked. GE Multilin L30 Line Current Differential System 5-231...
  • Page 372 COUNTER 1 FROZEN: Off = 0 STORE DATE & TIME Date & Time SETTING COUNT1 FREEZE/RESET: Off = 0 827065A2.VSD SETTING COUNT1 FREEZE/COUNT: Off = 0 Figure 5–103: DIGITAL COUNTER SCHEME LOGIC 5-232 L30 Line Current Differential System GE Multilin...
  • Page 373: Monitoring Elements

    1000 kA2-cyc Range: FlexLogic operand BKR 1 ARC AMP BLOCK: MESSAGE Range: Self-reset, Latched, Disabled BKR 1 ARC AMP MESSAGE TARGET: Self-reset Range: Disabled, Enabled BKR 1 ARC AMP MESSAGE EVENTS: Disabled GE Multilin L30 Line Current Differential System 5-233...
  • Page 374 BKR 1 ARC AMP LIMIT: Selects the threshold value above which the output operand is set. Breaker Contacts Initiate Extinguished Part Total Area = Breaker Arcing Current (kA·cycle) Programmable 100 ms Start Delay Start Stop Integration Integration Figure 5–104: ARCING CURRENT MEASUREMENT 5-234 L30 Line Current Differential System GE Multilin...
  • Page 375 5 SETTINGS 5.7 CONTROL ELEMENTS Figure 5–105: BREAKER ARCING CURRENT SCHEME LOGIC GE Multilin L30 Line Current Differential System 5-235...
  • Page 376 CT core of the same CT. If 3I_0 does not exist at source 2, then a CT failure is declared. • CT FAIL 1 3I0 INPUT 2 PICKUP: This setting selects the 3I_0 pickup value for input 2 (different CT input) of the relay. 5-236 L30 Line Current Differential System GE Multilin...
  • Page 377 VT fuse fail conditions. These noted indications of fuse failure can also be present when faults are present on the system, so a means of detecting faults and inhibiting fuse failure decla- rations during these events is provided. GE Multilin L30 Line Current Differential System 5-237...
  • Page 378 Figure 5–107: VT FUSE FAIL SCHEME LOGIC Base voltage for this element is PHASE VT SECONDARY setting in the case of WYE VTs and (PHASE VT SECONDARY)/ in case of DELTA VTs. 5-238 L30 Line Current Differential System GE Multilin...
  • Page 379 • BROKEN CONDUCTOR 1 PKP DELAY: This setting specifies the pickup time delay for this function to operate after assertion of the broken conductor pickup FlexLogic operand. GE Multilin L30 Line Current Differential System 5-239...
  • Page 380 5.7 CONTROL ELEMENTS 5 SETTINGS Figure 5–108: BROKEN CONDUCTOR DETECTION LOGIC 5-240 L30 Line Current Differential System GE Multilin...
  • Page 381 • I = measured overload RMS current • = measured load RMS current before overload occurs • k= IEC 255-8 k-factor applied to I , defining maximum permissible current above nominal current GE Multilin L30 Line Current Differential System 5-241...
  • Page 382 The thermal overload protection element estimates accumulated thermal energy E using the following equations calculated each power cycle. When current is greater than the pickup level, I > k × I , element starts increasing the thermal energy: 5-242 L30 Line Current Differential System GE Multilin...
  • Page 383 30 minutes Busbar 60 minutes 20 minutes Underground cable 20 to 60 minutes 60 minutes The logic for the thermal overload protection element is shown below. Figure 5–110: THERMAL OVERLOAD PROTECTION SCHEME LOGIC GE Multilin L30 Line Current Differential System 5-243...
  • Page 384: Inputs And Outputs

    The DC input voltage is compared to a user-settable threshold. A new contact input state must be maintained for a user- settable debounce time in order for the L30 to validate the new contact state. In the figure below, the debounce time is set at 2.5 ms;...
  • Page 385 Event Records menu, make the following settings changes: "Breaker Closed (52b)" CONTACT INPUT H5A ID: "Enabled" CONTACT INPUT H5A EVENTS: Note that the 52b contact is closed when the breaker is open and open when the breaker is closed. GE Multilin L30 Line Current Differential System 5-245...
  • Page 386: Virtual Inputs

    FlexLogic equation, it will likely have to be lengthened NOTE in time. A FlexLogic timer with a delayed reset can perform this function. Figure 5–112: VIRTUAL INPUTS SCHEME LOGIC 5-246 L30 Line Current Differential System GE Multilin...
  • Page 387: Contact Outputs

    PATH: SETTINGS INPUTS/OUTPUTS CONTACT OUTPUTS CONTACT OUTPUT H1a Range: Up to 12 alphanumeric characters  CONTACT OUTPUT H1a OUTPUT H1a ID  L-Cont Op 1 Range: FlexLogic operand OUTPUT H1a OPERATE: MESSAGE GE Multilin L30 Line Current Differential System 5-247...
  • Page 388 PRODUCT SETUP USER-PROGRAMMABLE PUSHBUT-  menus: TONS USER PUSHBUTTON 1 USER PUSHBUTTON 2 “Self-reset” “Self-reset” PUSHBUTTON 1 FUNCTION: PUSHBUTTON 2 FUNCTION: “0.00 s” “0.00 s” PUSHBTN 1 DROP-OUT TIME: PUSHBTN 2 DROP-OUT TIME: 5-248 L30 Line Current Differential System GE Multilin...
  • Page 389 Write the following FlexLogic equation (EnerVista UR Setup example shown): Program the Latching Outputs by making the following changes in the   SETTINGS INPUTS/OUTPUTS CONTACT OUT-  menu (assuming an H4L module): PUTS CONTACT OUTPUT H1a GE Multilin L30 Line Current Differential System 5-249...
  • Page 390: Virtual Outputs

    32 “DNA” bit pairs that represent the state of two pre-defined events and 30 user-defined events. All remaining bit pairs are “UserSt” bit pairs, which are status bits representing user-definable events. The L30 implementation provides 32 of the 96 available UserSt bit pairs.
  • Page 391 NOTE c) LOCAL DEVICES: DEVICE ID FOR TRANSMITTING GSSE MESSAGES In a L30 relay, the device ID that represents the IEC 61850 GOOSE application ID (GoID) name string sent as part of each GOOSE message is programmed in the ...
  • Page 392: Remote Inputs

    0. When communication resumes, the input becomes fully operational. For additional information on GSSE/GOOOSE messaging, see the Remote Devices section in this chapter. NOTE 5-252 L30 Line Current Differential System GE Multilin...
  • Page 393: Remote Double-point Status Inputs

    The above operand setting represents a specific DNA function (as shown in the following table) to be transmitted. Table 5–33: IEC 61850 DNA ASSIGNMENTS IEC 61850 DEFINITION FLEXLOGIC OPERAND Test IEC 61850 TEST MODE ConfRev IEC 61850 CONF REV GE Multilin L30 Line Current Differential System 5-253...
  • Page 394: Direct Inputs And Outputs

    DIRECT INPUT 1-8 MESSAGE DEFAULT: Off Range: Off, On DIRECT INPUT 2-1 MESSAGE DEFAULT: Off Range: Off, On DIRECT INPUT 2-2 MESSAGE DEFAULT: Off ↓ Range: Off, On DIRECT INPUT 2-8 MESSAGE DEFAULT: Off 5-254 L30 Line Current Differential System GE Multilin...
  • Page 395 L90 communication channel (same for 1-2...1-8) (87L is Enabled) SETTING DIRECT OUTPUT 1-1: FLEXLOGIC OPERAND (same for 1-2...1-8) Fail DIRECT I/P 1-1 Off (Flexlogic Operand) (same for 1-2...1-8) 831024A1.CDR Figure 5–115: DIRECT INPUTS/OUTPUTS LOGIC GE Multilin L30 Line Current Differential System 5-255...
  • Page 396: Resetting

    GOOSE ANALOG 1 PU: This setting specifies the per-unit base factor when using the GOOSE analog input FlexAna- log values in other L30 features, such as FlexElements. The base factor is applied to the GOOSE analog input FlexAn- alog quantity to normalize it to a per-unit quantity. The base units are described in the following table.
  • Page 397: Iec 61850 Goose Integers

    = maximum primary RMS value of all the sources related to the +IN and –IN inputs BASE (Max Delta Volts) The GOOSE analog input FlexAnalog values are available for use in other L30 functions that use FlexAnalog values. 5.8.12 IEC 61850 GOOSE INTEGERS ...
  • Page 398: Transducer Inputs And Outputs

    –20 to +180 MW; in this case the value would be “–20” and the DCMA INPUT H1 MIN VALUE DCMA INPUT H1 MAX value “180”. Intermediate values between the min and max values are scaled linearly. VALUE 5-258 L30 Line Current Differential System GE Multilin...
  • Page 399: Rtd Inputs

    1.5 pu. FlexElement operands are available to FlexLogic for further interlocking or to operate an output contact directly. Refer to the following table for reference temperature values for each RTD type. GE Multilin L30 Line Current Differential System 5-259...
  • Page 400 168.47 280.77 233.97 16.00 172.46 291.96 243.30 16.39 175.84 303.46 252.88 16.78 179.51 315.31 262.76 17.17 183.17 327.54 272.94 17.56 186.82 340.14 283.45 17.95 190.45 353.14 294.28 18.34 194.08 366.53 305.44 18.73 5-260 L30 Line Current Differential System GE Multilin...
  • Page 401: Dcma Outputs

    – MAX VAL MIN VAL MAX VAL < 0.1 pu. The resulting characteristic is illustrated in the following figure. DRIVING SIGNAL MIN VAL MAX VAL 842739A1.CDR Figure 5–116: DCMA OUTPUT CHARACTERISTIC GE Multilin L30 Line Current Differential System 5-261...
  • Page 402 The CT ratio is 5000:5 and the maximum load current is 4200 A. The current should be monitored from 0 A upwards, allow- ing for 50% overload. The phase current with the 50% overload margin is: 5-262 L30 Line Current Differential System GE Multilin...
  • Page 403 1.27 kV – • ±0.5% of reading For example, under nominal conditions, the positive-sequence reads 230.94 kV and the worst-case error is 0.005 x 230.94 kV + 1.27 kV = 2.42 kV. GE Multilin L30 Line Current Differential System 5-263...
  • Page 404: Testing

    TEST MODE FORCING: MESSAGE The L30 provides a test facility to verify the functionality of contact inputs and outputs, some communication functions and the phasor measurement unit (where applicable), using simulated conditions. The test mode is indicated on the relay face- plate by a Test Mode LED indicator.
  • Page 405: Force Contact Inputs

    Following a restart, power up, settings TEST MODE FUNCTION upload, or firmware upgrade, the test mode will remain at the last programmed value. This allows a L30 that has been placed in isolated mode to remain isolated during testing and maintenance activities. On restart, the TEST MODE FORCING setting and the force contact input and force contact output settings all revert to their default states.
  • Page 406: Force Contact Outputs

    PUSHBUTTON 1 FUNCTION input 1 to initiate the Test mode, make the following changes in the menu:   SETTINGS TESTING TEST MODE “Enabled” and “ ” TEST MODE FUNCTION: TEST MODE INITIATE: 5-266 L30 Line Current Differential System GE Multilin...
  • Page 407: Channel Tests

    Range: 0.000 to 9.999 kA in steps of 0.001 PMU 1 IA TEST MESSAGE MAGNITUDE: 1.000 kA Range: –180.00 to 180.00° in steps of 0.05 PMU 1 IA TEST MESSAGE ANGLE: –10.00° GE Multilin L30 Line Current Differential System 5-267...
  • Page 408 In test mode, the following actions take place: a. The Data Invalid / Test Mode bit (bit 15 in the STAT word) is set. b. The Sim bit in all output datasets is set. 5-268 L30 Line Current Differential System GE Multilin...
  • Page 409: Actual Values

    See page 6-10.  REMAINING CONNECT  PRP See page 6-10.   ACTUAL VALUES  87L DIFFERENTIAL See page 6-15.  METERING  CURRENT  SOURCE SRC 1 See page 6-16.  GE Multilin L30 Line Current Differential System...
  • Page 410  PMU RECORDS See page 6-24.   MAINTENANCE See page 6-25.   ACTUAL VALUES  MODEL INFORMATION See page 6-26.  PRODUCT INFO   FIRMWARE REVISIONS See page 6-26.  L30 Line Current Differential System GE Multilin...
  • Page 411: Contact Inputs

    The state displayed will be that of the remote point unless the remote device has been established to be “Offline” in which case the value shown is the programmed default state for the remote input. GE Multilin L30 Line Current Differential System...
  • Page 412: Remote Double-point Status Inputs

    Range: On, Off, VOff, VOn, IOn, IOff  CONTACT OUTPUTS Cont Op 1  Range: On, Off, VOff, VOn, IOn, IOff Cont Op 2 MESSAGE ↓ Range: On, Off, VOff, VOn, IOn, IOff Cont Op xx MESSAGE L30 Line Current Differential System GE Multilin...
  • Page 413: Virtual Outputs

    The present state of the programmed remote devices is shown here. The message indicates ALL REMOTE DEVICES ONLINE whether or not all programmed remote devices are online. If the corresponding state is "No", then at least one required remote device is not online. GE Multilin L30 Line Current Differential System...
  • Page 414: Channel Tests

    Range: n/a, FAIL, OK VALIDITY OF CHANNEL MESSAGE CONFIGURATION: n/a Range: n/a, FAIL, OK PFLL MESSAGE STATUS: n/a The status information for two channels is shown here. A brief description of each actual value is below: L30 Line Current Differential System GE Multilin...
  • Page 415: Digital Counters

      PATH: ACTUAL VALUES STATUS SELECTOR SWITCHES Range: Current Position / 7  SELECTOR SWITCHES SELECTOR SWITCH 1  POSITION: 0/7 Range: Current Position / 7 SELECTOR SWITCH 2 MESSAGE POSITION: 0/7 GE Multilin L30 Line Current Differential System...
  • Page 416: Flex States

    UINT INPUT 16 MESSAGE The L30 Line Current Differential System is provided with optional IEC 61850 communications capability. This feature is specified as a software option at the time of ordering. See the Order Codes section in chap- ter 2 for details.
  • Page 417: Real Time Clock Synchronizing

    PTP-— IRIG-B DELTA being received via PTP and that being received via IRIG-B. A positive value indicates that PTP time is fast compared to IRIG-B time. GE Multilin L30 Line Current Differential System...
  • Page 418: Remaining Connection Status

    Mismatches Port B: MESSAGE The L30 Line Current Differential System is provided with optional PRP capability. This feature is specified as a software option at the time of ordering. See the Order Codes section in chapter 2 for details. is a counter for total messages received (either from DANPs or from SANs) on Port A.
  • Page 419 LAN ID in the frame do not match). is a counter for total messages received with an error on Port B (PRP frame, but port received through MISMATCHES PORT B and LAN ID in the frame do not match). GE Multilin L30 Line Current Differential System 6-11...
  • Page 420: Metering Conventions

    WATTS = Negative VARS = Positive PF = Lead PF = Lag PF = Lead Current UR RELAY 827239AC.CDR S=VI Generator Figure 6–1: FLOW DIRECTION OF SIGNED VALUES FOR WATTS AND VARS 6-12 L30 Line Current Differential System GE Multilin...
  • Page 421 ABC phase rotation: • ACB phase rotation: -- - V -- - V -- - V -- - V -- - V -- - V The above equations apply to currents as well. GE Multilin L30 Line Current Differential System 6-13...
  • Page 422 The power system voltages are phase-referenced – for simplicity – to VAG and VAB, respectively. This, however, is a relative matter. It is important to remember that the L30 displays are always referenced as specified under SETTINGS ...
  • Page 423: Differential Current

    The metered current values are displayed for all line terminals in fundamental phasor form. All angles are shown with respect to the reference common for all L30 devices; that is, frequency, source currents, and voltages. The metered pri- mary differential and restraint currents are displayed for the local relay.
  • Page 424: Sources

    0.000 0.0° SRC 1 PHASOR Ic: MESSAGE 0.000 0.0° SRC 1 PHASOR In: MESSAGE 0.000 0.0° SRC 1 ZERO SEQ I0: MESSAGE 0.000 0.0° SRC 1 POS SEQ I1: MESSAGE 0.000 0.0° 6-16 L30 Line Current Differential System GE Multilin...
  • Page 425 RMS Vca: MESSAGE 0.00 SRC 1 PHASOR Vab: MESSAGE 0.000 0.0° SRC 1 PHASOR Vbc: MESSAGE 0.000 0.0° SRC 1 PHASOR Vca: MESSAGE 0.000 0.0° SRC 1 ZERO SEQ V0: MESSAGE 0.000 0.0° GE Multilin L30 Line Current Differential System 6-17...
  • Page 426 APPARENT PWR MESSAGE 3φ: 0.000 SRC 1 APPARENT PWR MESSAGE φa: 0.000 SRC 1 APPARENT PWR MESSAGE φb: 0.000 SRC 1 APPARENT PWR MESSAGE φc: 0.000 SRC 1 POWER FACTOR MESSAGE 3φ: 1.000 6-18 L30 Line Current Differential System GE Multilin...
  • Page 427: Synchrocheck

    S = V x Î x Î x Î (EQ 6.1) When VTs are configured in delta, the L30 does not calculate power in each phase and three-phase power is measured as S = V x Î x Î (EQ 6.2)
  • Page 428: Tracking Frequency

    = maximum nominal primary RMS value of the +IN and –IN inputs BASE SYNCHROCHECK = maximum primary RMS value of all the sources related to the +IN and –IN inputs BASE (Max Delta Volts) 6-20 L30 Line Current Differential System GE Multilin...
  • Page 429: Iec 61580 Goose Analog Values

    MESSAGE 0.000 The L30 Line Current Differential System is provided with optional IEC 61850 communications capability. This feature is specified as a software option at the time of ordering. See the Order Codes section of chap- ter 2 for details.
  • Page 430: Pmu Aggregator

    RTD INPUT xx  -50 °C Actual values for each RTD input channel that is enabled are displayed with the top line as the programmed channel ID and the bottom line as the value. 6-22 L30 Line Current Differential System GE Multilin...
  • Page 431: Records

    COMMANDS CLEAR RECORDS Only major output operands generate events, not every operand. Elements that assert output per phase, for example, log operating phase output only without asserting the common three-phase operand event. GE Multilin L30 Line Current Differential System 6-23...
  • Page 432: Oscillography

     RECORDING The number of triggers applicable to the phasor measurement unit recorder is indicated by the value. NUMBER OF TRIGGERS The status of the phasor measurement unit recorder is indicated as follows: 6-24 L30 Line Current Differential System GE Multilin...
  • Page 433: Breaker Maintenance

    BKR 1 ARCING AMP  menu for clearing breaker arcing current records. The COMMANDS CLEAR RECORDS BREAKER OPERATING TIME defined as the slowest operating time of breaker poles that were initiated to open. GE Multilin L30 Line Current Differential System 6-25...
  • Page 434: Product Information

    6.5PRODUCT INFORMATION 6.5.1 MODEL INFORMATION   PATH: ACTUAL VALUES PRODUCT INFO MODEL INFORMATION Range: standard GE order code format;  MODEL INFORMATION ORDER CODE LINE 1: example order code shown  L30-E00-HCH-F8F-H6A Range: standard GE serial number format SERIAL NUMBER:...
  • Page 435: Commands And

    The states of up to 64 virtual inputs are changed here. The first line of the display indicates the ID of the virtual input. The second line indicates the current or selected status of the virtual input. This status will be a state off (logic 0) or on (logic 1). GE Multilin L30 Line Current Differential System...
  • Page 436 When the relay is synchronizing to an external time source such as PTP, IRIG-B, or SNTP, the manually entered time is over-written. The timescale of the entered time is local time, including daylight savings time where and when applicable. L30 Line Current Differential System GE Multilin...
  • Page 437: Relay Maintenance

    Various self-checking diagnostics are performed in the background while the L30 is running, and diagnostic information is stored on the non-volatile memory from time to time based on the self-checking result. Although the diagnostic information is cleared before the L30 is shipped from the factory, the user may want to clear the diagnostic information for themselves under certain circumstances.
  • Page 438: Phasor Measurement Unit One-shot

    The high-accuracy high-sampling rate record of the two signals captured by the scope can be processed using digital tools to verify the magnitude and phase angle with respect to the time reference signal. As both the time reference and the mea- L30 Line Current Differential System GE Multilin...
  • Page 439: Security

    Operator Logoff: Selecting ‘Yes’ allows the Supervisor to forcefully logoff an operator session. • Clear Security Data: Selecting ‘Yes’ allows the Supervisor to forcefully clear all the security logs and clears all the operands associated with the self-tests. Targets GE Multilin L30 Line Current Differential System...
  • Page 440: Targets Menu

     MESSAGE Each L30 element with a TARGET setting has a target message that when activated by its element is displayed in sequence with any other currently active target messages in the menu. In the example shown, the Phase TOC4 TARGETS and Digital Element 48 target settings are active and so have their targets displayed.
  • Page 441 Contact Factory (xxx) • Latched target message: Yes. • Description of problem: One or more installed hardware modules is not compatible with the L30 order code. • How often the test is performed: Module dependent. • What to do: Contact the factory and supply the failure code noted in the display. The “xxx” text identifies the failed mod- ule (for example, F8L).
  • Page 442 • What to do: Verify that all the items in the GOOSE data set are supported by the L30. The EnerVista UR Setup soft- ware will list the valid items. An IEC61850 client will also show which nodes are available for the L30.
  • Page 443 What to do: Check that Ethernet cable(s) are properly connected. Check that configuration for the SNTP server corre- sponds to the actual server settings. Check connectivity to the server (ping the server IP address. GE Multilin L30 Line Current Differential System...
  • Page 444 TEMP MONITOR: OVER TEMPERATURE • Latched target message: Yes. • Description of problem: The ambient temperature is greater than the maximum operating temperature (+80°C). • How often the test is performed: Every hour. 7-10 L30 Line Current Differential System GE Multilin...
  • Page 445 7 COMMANDS AND TARGETS 7.1 COMMANDS • What to do: Remove the L30 from service and install in a location that meets operating temperature standards. UNEXPECTED RESTART: Press “RESET” key • Latched target message: Yes. • Description of problem: Abnormal restart from modules being removed or inserted while the L30 is powered-up, when there is an abnormal DC supply, or as a result of internal relay failure.
  • Page 446 If this message appears, contact the factory and supply the failure code noted in the display. Text in the message identifies the failed module (for example, H81). If operated on a Process Card failure, the Module Fail self-test seals-in (latches) till the UR-series device is restarted. 7-12 L30 Line Current Differential System GE Multilin...
  • Page 447 Brick output failing to respond to an output command can only be detected while the command is active, and so in this case the target is latched. A latched target can be unlatched by pressing the faceplate reset key if the command has ended, however the output may still be non-functional. GE Multilin L30 Line Current Differential System 7-13...
  • Page 448 7.1 COMMANDS 7 COMMANDS AND TARGETS 7-14 L30 Line Current Differential System GE Multilin...
  • Page 449: Theory Of Operation

    The second major technical consideration is the restraint characteristic, which is the decision boundary between situations that are declared to be a fault and those that are not. The L30 uses an innovative adaptive decision process based on an on-line computation of the sources of measurement error. In this adaptive approach, the restraint region is an ellipse with variable major axis, minor axis, and orientation.
  • Page 450: Removal Of Decaying Offset

    Since the sampling clocks are synchronized, the time stamp is simply a sequence number. L30 Line Current Differential System GE Multilin...
  • Page 451: Disturbance Detection

    CT saturation is detected (see CT Saturation Detection for details); is an adaptive restraint term (see Online Estimate Of Measurement Error for details) LOC_ADA_A The squared restraining current is calculated as a sum of squared local and all remote restraints: GE Multilin L30 Line Current Differential System...
  • Page 452: Ground Differential Element

    The line ground differential function allows sensitive ground protection for single-line to-ground faults, allowing the phase differential element to be set higher (above load) to provide protection for multi-phase faults. The L30 ground differential function calculates ground differential current from all terminal phase currents. The maximum phase current is used for the restraint.
  • Page 453: Clock Synchronization

    In all cases, an estimate of phase error is computed and used to automatically adapt the restraint region to compensate. Frequency tracking is provided that will accommodate any fre- quency shift normally encountered in power systems. GE Multilin L30 Line Current Differential System...
  • Page 454: Frequency Tracking And Phase Locking

    GPS (Global Positioning System) to compensate for the channel delay asymmetry. This feature requires a GPS receiver to provide a GPS clock signal to the L30. With this option there are two clocks as each terminal: a local sampling clock and a local GPS clock.
  • Page 455: Frequency Detection

    Current measurements can generally provide the most accurate information, but are not always available and may contain large errors during faults or switching transients. Time stamped messages are GE Multilin L30 Line Current Differential System...
  • Page 456 256 to the round trip and add 128 to the phase angle. Also, if the above equations are computed using integer values of time stamps, a conversion to phase angle in radians is required by multiplying by π / 32. L30 Line Current Differential System GE Multilin...
  • Page 457 ( T1 T2 T2 T1 ) i -3, i-2, i -1, Calculate 1, 1. δ θ Speed up Slow down 831729A2.CDR Figure 8–2: ROUND TRIP DELAY AND CLOCK OFFSET COMPUTATION FROM TIME STAMPS GE Multilin L30 Line Current Differential System...
  • Page 458: Phase Locking Filter

    T = the time between execution of the filter algorithm repeat = time constant for the primary phase locked loop phase = time constant for the frequency locked loop frequency 8-10 L30 Line Current Differential System GE Multilin...
  • Page 459: Matching Phaselets

    A 6 Mhz clock with a 16-bit hardware counter is adequate, provided the method is used for achieving the 32-bit resolu- tion that is described in this document. • An 8-bit time stamp is adequate provided time stamp messages are exchanged once per cycle. • A 4-bit message sequence number is adequate. GE Multilin L30 Line Current Differential System 8-11...
  • Page 460: Online Estimate Of Measurement Errors

    1_ADA_A 1_A k ( ) 1_MAG_A Another source of the measurement errors is clock synchronization error, resulting in a clock uncertainty term. The L30 algorithm accounts for two terms of synchronization error corresponding to: • Raw clock deviation computed from time stamps. There are several effects that cause it to not track exactly. First, the ping-pong algorithm inherently produces slightly different estimates of clock deviation at each terminal.
  • Page 461: Ct Saturation Detection

    For short transmission lines the charging current is a small factor and can therefore be treated as an unknown error. In this application the L30 can be deployed with- out voltage sensors and the line charging current is included as a constant term in the total variance, increasing the differ- ential restraint current.
  • Page 462: Differential Element Characteristics

    The L30 incorporates an adaptive differential algorithm based on the traditional percent differential principle. In the tradi- tional percent differential scheme, the operating parameter is based on the phasor sum of currents in the zone and the restraint parameter is based on the scalar (or average scalar) sum of the currents in the protected zone - when the operat- ing parameter divided by the restraint parameter is above the slope setting, the relay will operate.
  • Page 463: Relay Synchronization

    8.1 OVERVIEW The major difference between the L30 differential scheme and a percent differential scheme is the use of an estimate of errors in the input currents to increase the restraint parameter during faults, permitting the use of more sensitive settings than those used in the traditional scheme.
  • Page 464: Operating Condition Characteristics

    8.2OPERATING CONDITION CHARACTERISTICS 8.2.1 DESCRIPTION Characteristics of differential elements can be shown in the complex plane. The operating characteristics of the L30 are fundamentally dependant on the relative ratios of the local and remote current phasor magnitudes and the angles of as shown in the Restraint Characteristics figure.
  • Page 465 8 THEORY OF OPERATION 8.2 OPERATING CONDITION CHARACTERISTICS Figure 8–7: RESTRAINT CHARACTERISTICS GE Multilin L30 Line Current Differential System 8-17...
  • Page 466: Trip Decision Example

    Current differential section of chapter 5. The following figure shows how the L30 settings affect the restraint characteristics. The local and remote currents are 180° apart, which represents an external fault. The breakpoint between the two slopes indicates the point where the restraint area is becoming wider to override uncertainties from CT saturation, fault noise, harmonics, etc.
  • Page 467 8 THEORY OF OPERATION 8.2 OPERATING CONDITION CHARACTERISTICS loc pu OPERATE RESTRAINT BP=8, P=2, S1=30%, S2=50% BP=4, P=1, S1=30%, S2=50% BP=4, P=1, S1=20%, S2=40% OPERATE rem pu 831725A1.CDR Figure 8–8: SETTINGS IMPACT ON RESTRAINT CHARACTERISTIC GE Multilin L30 Line Current Differential System 8-19...
  • Page 468 Depending on the fault type, appropriate voltage and current signals are selected from the phase quantities before applying the two equations above (the superscripts denote phases, the subscripts denote stations). For AG faults: ⋅ (EQ 8.43) – Apre 8-20 L30 Line Current Differential System GE Multilin...
  • Page 469 -- - V (EQ 8.50) – – SYS0 -- - V – – SYS0 where Z is the equivalent zero-sequence impedance behind the relay as entered under the fault report setting menu. SYS0 GE Multilin L30 Line Current Differential System 8-21...
  • Page 470: Fault Locator

    FAULT FAULT LOCATION 3I_0 LOCATOR 1 FAULT# RECLOSE SHOT VA or VAB VB or VBC VC or VCA Vn or V_0 SHOT # FROM 827094A5.CDR AUTO RECLOSURE Figure 8–10: FAULT LOCATOR SCHEME 8-22 L30 Line Current Differential System GE Multilin...
  • Page 471: Application Of Settings

    Practically, it is difficult to meet this criteria and avoid saturation completely. The L30 provides several means to ensure security during an external fault, including dual-slope restraint characteristics, adaptive restraint, and CT saturation mechanism, allowing the relay to be secure during severe external faults, while maintaining excellent performance for internal faults.
  • Page 472: Ct Saturation Analysis Tool

    9.1.2 CT SATURATION ANALYSIS TOOL The CT saturation analysis tool is an Excel spreadsheet provided for users to analyze the L30 reliability during CT satura- tion caused by an external fault, to investigate the effect of adjusting 87L settings, and to examine the possibility of reducing the CT requirement.
  • Page 473 You are encouraged to test different fault locations and different fault levels and distributions per short circuit studies. Alter- natively, the tool can help to estimate required CT parameters (ratio and knee point voltage), based on some pre-deter- mined criteria. GE Multilin L30 Line Current Differential System...
  • Page 474: Current Differential (87l) Settings

    9.2CURRENT DIFFERENTIAL (87L) SETTINGS 9.2.1 INTRODUCTION Software is available from the GE Grid Solutions website that is helpful in selecting settings for the specific applica- tion. Checking the performance of selected element settings with respect to known power system fault parameters makes it relatively simple to choose the optimum settings for the application.
  • Page 475: Ct Tap

    For relay 1, channel 1 communicates to relay 2 and channel 2 communicates to relay 3 • For relay 2, channel 1 communicates to relay 1 and channel 2 communicates to relay 3 GE Multilin L30 Line Current Differential System...
  • Page 476 This satisfies the equality condition indicated earlier. During on-load tests, the differential current at all terminals should be the same and generally equal to the charging current if the tap and CT ratio settings are chosen correctly. L30 Line Current Differential System GE Multilin...
  • Page 477: Channel Asymmetry Compensation Using Gps

    If GPS is enabled at all terminals and the GPS signal is present, the L30 compensates for the channel asymmetry. On the loss of the GPS signal, the L30 stores the last measured value of the channel asymmetry per channel and compensates for the asymmetry until the GPS clock is available.
  • Page 478: Compensation Method 2

    Create FlexLogic similar to that shown below to switch the 87L element to Settings Group 2 (with most sensitive set- tings) if the L30 has a valid GPS time reference. If a GPS or 87L communications failure occurs, the L30 will switch back to Settings Group 1 with less sensitive settings.
  • Page 479 Set the 87L element with different differential settings for Settings Groups 1 and 2 as shown below Enable GPS compensation when the GPS signal is valid and switch to Settings Group 2 (with more sensitive settings) as shown below. GE Multilin L30 Line Current Differential System...
  • Page 480: Instantaneous Elements

    9.4.1 INSTANTANEOUS ELEMENT ERROR DURING L30 SYNCHRONIZATION Two or three L30 relays are synchronized to each other and to system frequency to provide line current differential protec- tion and accurate measurements for other protection and control elements. When an L30 system starts up, the relays adjust their tracking frequency aggressively to bring all relays into synchronization within the system quickly.
  • Page 481 Another example is Phase IOC; typically, these elements have very sufficient margin for the overload conditions and are set high enough above these conditions. But voltage-based elements can be set quite close to the system nominal voltage or operating voltage and can require attention. GE Multilin L30 Line Current Differential System 9-11...
  • Page 482 A 700 ms drop-off timer in the logic is shown as an example to guarantee error below 3 percent, but delay can be realistically even shorter, if the setting security margin allows this. Figure 9–6: FLEXLOGIC TO BLOCK INSTANTANEOUS ELEMENT DURING 87L STARTUP 9-12 L30 Line Current Differential System GE Multilin...
  • Page 483 Similarly, if the phase instantaneous overcurrent setting has sufficient margin, blocking is not needed. Note that significant zero-sequence and negative-sequence current or voltage error do not appear during L30 startup, therefore all sequence-based elements using these quantities are safe.
  • Page 484 9.4 INSTANTANEOUS ELEMENTS 9 APPLICATION OF SETTINGS 9-14 L30 Line Current Differential System GE Multilin...
  • Page 485: Commissioning

    G.703, and RS422. The speed is 64 Kbaud in a transparent synchronous mode with automatic synchronous character detection and CRC insertion. The Local Loopback Channel Test verifies the L30 communication modules are working properly. The Remote Loopback –4 Channel Test verifies the communication link between the relays meets requirements (BER less than 10 ).
  • Page 486: Clock Synchronization Tests

    “OK” ACTUAL VALUES STATUS CHANNEL TESTS CHANNEL 1(2) STATUS:    “n/a” ACTUAL VALUES STATUS CHANNEL TESTS REMOTE LOOPBACK STATUS:    “OK” ACTUAL VALUES STATUS CHANNEL TESTS PFLL STATUS: 10-2 L30 Line Current Differential System GE Multilin...
  • Page 487: Current Differential

    Download the UR Test software from the GE Grid Solutions website (http://www.gegridsolutions.com/products/sup- port/ur/l90test.zip) or contact GE Grid Solutions for information about the UR current differential test program which allows the user to simulate different operating conditions for verifying correct responses of the relays during com- NOTE missioning activities.
  • Page 488: Local-remote Relay Tests

    These phasors and differential currents can be monitored at the ACTUAL VAL-   menu where all current magnitudes and angles can be observed and con- METERING 87L DIFFERENTIAL CURRENT clusions of proper relay interconnections can be made. 10-4 L30 Line Current Differential System GE Multilin...
  • Page 489: Maintenance

    The enhanced faceplate can be opened to the left, once the thumb screw has been removed, as shown below. This allows for easy accessibility of the modules for withdrawal. The new wide-angle hinge assembly in the enhanced front panel opens completely and allows easy access to all modules in the L30. 842812A1.CDR Figure 11–1: UR MODULE WITHDRAWAL AND INSERTION (ENHANCED FACEPLATE)
  • Page 490 When the clips have locked into position, the module will be fully inserted. CPU connections must be individually disconnected from the module before the module can be removed from the chassis. NOTE NOTE 11-2 L30 Line Current Differential System GE Multilin...
  • Page 491: Batteries

    10. Reinstall the battery clip and the metal cover, and reinsert the power supply module into the unit. 11. Power on the unit. 12. Dispose of the old battery as outlined in the next section. GE Multilin L30 Line Current Differential System 11-3...
  • Page 492 22. Reinstall the battery holder and the metal cover, and reinsert the power supply module into the unit. 23. Power on the unit. 24. Dispose of the old battery as outlined in the next section. 11-4 L30 Line Current Differential System GE Multilin...
  • Page 493: Dispose Of Battery

    La batterie est marqué de ce symbole, qui comprennent les indications cadmium (Cd), plomb (Pb), ou mercure (Hg). Pour le recyclage, retourner la batterie à votre fournisseur ou à un point de collecte. Pour plus d'informations, voir: www.recyclethis.info. GE Multilin L30 Line Current Differential System 11-5...
  • Page 494 Baterija je označena s tem simbolom, ki lahko vključuje napise, ki označujejo kadmij (Cd), svinec (Pb) ali živo srebro (Hg). Za ustrezno recikliranje baterijo vrnite dobavitelju ali jo odstranite na določenem zbirališču. Za več informacij obiščite spletno stran: www.recyclethis.info. 11-6 L30 Line Current Differential System GE Multilin...
  • Page 495 North America 905-294-6222 Latin America +55 11 3614 1700 Europe, Middle East, Africa +(34) 94 485 88 00 Asia +86-21-2401-3208 India +91 80 41314617 From GE Part Number 1604-0021-A1, GE Publication Number GEK-113574 GE Multilin L30 Line Current Differential System 11-7...
  • Page 496: Uninstall And Clear Files And Data

    Other files can be in standard formats, such as COMTRADE or .csv. You cannot erase directly the flash memory, but all records and settings in that memory can be deleted. Do this using the   command. SETTINGS PRODUCT SETUP CLEAR RELAY RECORDS 11-8 L30 Line Current Differential System GE Multilin...
  • Page 497: Repairs

    Customers are responsible for shipping costs to the factory, regardless of whether the unit is under warranty. • Fax a copy of the shipping information to the GE Grid Solutions service department in Canada at +1 905 927 5098. Use the detailed return procedure outlined at https://www.gegridsolutions.com/multilin/support/ret_proc.htm...
  • Page 498: Storage

    Store the unit indoors in a cool, dry place. If possible, store in the original packaging. Follow the storage temperature range outlined in the Specifications. To avoid deterioration of electrolytic capacitors, power up units that are stored in a de-energized state once per year, for one hour continuously. 11-10 L30 Line Current Differential System GE Multilin...
  • Page 499: Disposal

    European Union, dispose of the battery as outlined earlier. To prevent non-intended use of the unit, remove the modules as outlined earlier, dismantle the unit, and recycle the metal when possible. GE Multilin L30 Line Current Differential System 11-11...
  • Page 500 11.6 DISPOSAL 11 MAINTENANCE 11-12 L30 Line Current Differential System GE Multilin...
  • Page 501: Parameter Lists

    SRC 1 I_2 Angle Degrees Source 1 negative-sequence current angle 6178 SRC 1 Igd Mag Amps Source 1 differential ground current magnitude 6180 SRC 1 Igd Angle Degrees Source 1 differential ground current angle GE Multilin L30 Line Current Differential System...
  • Page 502 6691 SRC 1 V_0 Mag Volts Source 1 zero-sequence voltage magnitude 6693 SRC 1 V_0 Angle Degrees Source 1 zero-sequence voltage angle 6694 SRC 1 V_1 Mag Volts Source 1 positive-sequence voltage magnitude L30 Line Current Differential System GE Multilin...
  • Page 503 SRC 1 Phase B PF Source 1 phase B power factor 7195 SRC 1 Phase C PF Source 1 phase C power factor 7200 SRC 2 P Watts Source 2 three-phase real power GE Multilin L30 Line Current Differential System...
  • Page 504 Fault Ia Mag [1] Amps Fault 1 phase A current magnitude 9044 Fault Ia Ang [1] Degrees Fault 1 phase A current angle 9045 Fault Ib Mag [1] Amps Fault 1 phase B current magnitude L30 Line Current Differential System GE Multilin...
  • Page 505 9377 Diff Curr IA Angle Degrees Differential current phase A angle 9378 Diff Curr IB Angle Degrees Differential current phase B angle 9379 Diff Curr IC Angle Degrees Differential current phase C angle GE Multilin L30 Line Current Differential System...
  • Page 506 Phasor measurement unit 1 positive-sequence current angle 9617 PMU 1 I2 Mag Amps Phasor measurement unit 1 negative-sequence current magnitude 9619 PMU 1 I2 Angle Degrees Phasor measurement unit 1 negative-sequence current angle L30 Line Current Differential System GE Multilin...
  • Page 507 RTD Ip 14 RTD input 14 actual value 13566 RTD Ip 15 RTD input 15 actual value 13567 RTD Ip 16 RTD input 16 actual value 13568 RTD Ip 17 RTD input 17 actual value GE Multilin L30 Line Current Differential System...
  • Page 508 FlexElement 7 actual value 39182 FlexElement 8 Value FlexElement 8 actual value 41132 V0 3rd Harmonic 1 Volts VTFF 1 V0 3rd Harmonic 41134 V0 3rd Harmonic 2 Volts VTFF 2 V0 3rd Harmonic L30 Line Current Differential System GE Multilin...
  • Page 509: Flexinteger Items

    IEC61850 GOOSE UInteger input 2 9972 GOOSE UInt Input 3 IEC61850 GOOSE UInteger input 3 9974 GOOSE UInt Input 4 IEC61850 GOOSE UInteger input 4 9976 GOOSE UInt Input 5 IEC61850 GOOSE UInteger input 5 GE Multilin L30 Line Current Differential System...
  • Page 510 IEC61850 GOOSE UInteger input 13 9994 GOOSE UInt Input 14 IEC61850 GOOSE UInteger input 14 9996 GOOSE UInt Input 15 IEC61850 GOOSE UInteger input 15 9998 GOOSE UInt Input 16 IEC61850 GOOSE UInteger input 16 A-10 L30 Line Current Differential System GE Multilin...
  • Page 511: Modbus Communications

    (CRC-16) with every packet which is an industry standard method used for error detection. If a Modbus slave device receives a packet in which an error is indicated by the CRC, the slave device does not act upon or respond to the GE Multilin L30 Line Current Differential System...
  • Page 512: Modbus Rtu Crc-16 Algorithm

    This algorithm requires the characteristic polynomial to be reverse bit ordered. The most significant bit of the characteristic polynomial is dropped, since it does not affect the value of the remainder. A C programming language implementation of the CRC algorithm will be provided upon request. L30 Line Current Differential System GE Multilin...
  • Page 513 No: go to 8; Yes: G (+) A --> A and continue. Is j = 8? No: go to 5; Yes: continue i + 1 --> i Is i = N? No: go to 3; Yes: continue A --> CRC GE Multilin L30 Line Current Differential System...
  • Page 514: Modbus Function Codes

    NUMBER OF REGISTERS - low DATA #2 - high CRC - low DATA #2 - low CRC - high DATA #3 - high DATA #3 - low CRC - low CRC - high L30 Line Current Differential System GE Multilin...
  • Page 515: Execute Operation (function Code 05h

    DATA STARTING ADDRESS - low DATA STARTING ADDRESS - low DATA - high DATA - high DATA - low DATA - low CRC - low CRC - low CRC - high CRC - high GE Multilin L30 Line Current Differential System...
  • Page 516: Store Multiple Settings (function Code 10h

    PACKET FORMAT EXAMPLE (HEX) SLAVE ADDRESS SLAVE ADDRESS FUNCTION CODE FUNCTION CODE CRC - low order byte ERROR CODE CRC - high order byte CRC - low order byte CRC - high order byte L30 Line Current Differential System GE Multilin...
  • Page 517: File Transfers

    Familiarity with the data logger feature is required to understand this description. Refer to the Data Logger section of Chap- ter 5 for details. To read the entire data logger in binary COMTRADE format, read the following files. GE Multilin L30 Line Current Differential System...
  • Page 518 READING FAULT REPORT FILES Fault report data has been available via the L30 file retrieval mechanism since UR firmware version 2.00. The file name is faultReport#####.htm. The ##### refers to the fault report record number. The fault report number is a counter that indicates how many fault reports have ever occurred.
  • Page 519: Memory Mapping

    040C Virtual Input 13 State 0 to 1 F108 0 (Off) 040D Virtual Input 14 State 0 to 1 F108 0 (Off) 040E Virtual Input 15 State 0 to 1 F108 0 (Off) GE Multilin L30 Line Current Differential System...
  • Page 520 IEC103 Common ASDU Address 0 to 254 F001 0583 IEC103 Sync Timeout 1 to 1440 F001 IEC 103 Binary Inputs (Read/Write Setting) (96 modules) 0584 IEC103 Binary Input 1 FUN 0 to 255 F001 B-10 L30 Line Current Differential System GE Multilin...
  • Page 521 ...Repeated for Binary Input 48 0644 ...Repeated for Binary Input 49 0648 ...Repeated for Binary Input 50 064C ...Repeated for Binary Input 51 0650 ...Repeated for Binary Input 52 0654 ...Repeated for Binary Input 53 GE Multilin L30 Line Current Differential System B-11...
  • Page 522 IEC103 ASDU 1 Analog Param 2 0 to 65535 F600 070C IEC103 ASDU 1 Analog Factor 2 0 to 65.535 0.001 F001 1000 070D IEC103 ASDU 1 Analog Offset 2 -32768 to 32767 F002 B-12 L30 Line Current Differential System GE Multilin...
  • Page 523 ...Repeated for IEC103 Command 21 07D4 ...Repeated for IEC103 Command 22 07D8 ...Repeated for IEC103 Command 23 07DC ...Repeated for IEC103 Command 24 07E0 ...Repeated for IEC103 Command 25 07E4 ...Repeated for IEC103 Command 26 GE Multilin L30 Line Current Differential System B-13...
  • Page 524 3 (Bad) 1555 Remote Double-Point Status Input 5 State 0 to 3 F605 3 (Bad) Direct Input/Output States (Read Only) 15A0 Direct Input 1-1 State (8 items) 0 to 1 F108 0 (Off) B-14 L30 Line Current Differential System GE Multilin...
  • Page 525 ...Repeated for Field Transducer 8 Source Current (Read Only) (2 modules) 1800 Source 1 Phase A Current RMS 0 to 999999.999 0.001 F060 1802 Source 1 Phase B Current RMS 0 to 999999.999 0.001 F060 GE Multilin L30 Line Current Differential System B-15...
  • Page 526 Source 1 Negative Sequence Voltage Magnitude 0 to 999999.999 0.001 F060 1A2B Source 1 Negative Sequence Voltage Angle -359.9 to 0 degrees F002 1A2C Reserved (20 items) F001 1A40 ...Repeated for Source 2 B-16 L30 Line Current Differential System GE Multilin...
  • Page 527 0 to 1 F126 0 (No) 2225 Breaker 2 Arcing Current Clear Command 0 to 1 F126 0 (No) Passwords Unauthorized Access (Read/Write Command) 2230 Reset Unauthorized Access 0 to 1 F126 0 (No) GE Multilin L30 Line Current Differential System B-17...
  • Page 528 0.001 F060 248A Terminal 1 IC Magnitude 0 to 999999.999 0.001 F060 248C Terminal 2 IA Magnitude 0 to 999999.999 0.001 F060 248E Terminal 2 IB Magnitude 0 to 999999.999 0.001 F060 B-18 L30 Line Current Differential System GE Multilin...
  • Page 529 PMU Unit 1 Phase A Voltage Angle -180 to 180 ° 0.01 F002 2570 PMU 1 Phase B Voltage Magnitude 0 to 999999.999 0.001 F060 2572 PMU 1 Phase B Voltage Angle -180 to 180 ° 0.01 F002 GE Multilin L30 Line Current Differential System B-19...
  • Page 530 IEC 61850 GGIO5 uinteger Input 16 Operand F612 IEC 61850 Received Integers (Read Only Actual Values) (16 modules) 26F0 IEC 61850 Received uinteger 1 0 to 4294967295 F003 26F2 IEC 61850 Received uinteger 2 0 to 4294967295 F003 B-20 L30 Line Current Differential System GE Multilin...
  • Page 531 0 to 4294967295 F050 304A Fault Report 14 Time 0 to 4294967295 F050 304C Fault Report 15 Time 0 to 4294967295 F050 Modbus File Transfer (Read/Write) 3100 Name of file to read F204 (none) GE Multilin L30 Line Current Differential System B-21...
  • Page 532 0 to 1 F102 1 (Enabled) 3337 Settings Lock Alarm 0 to 1 F102 1 (Enabled) 3338 Bypass Access 0 to 3 F628 0 (Disabled) 333A Serial Inactivity Timeout 1 to 9999 F001 B-22 L30 Line Current Differential System GE Multilin...
  • Page 533 °C F002 34F9 RTD Input 10 Value -32768 to 32767 °C F002 34FA RTD Input 11 Value -32768 to 32767 °C F002 34FB RTD Input 12 Value -32768 to 32767 °C F002 GE Multilin L30 Line Current Differential System B-23...
  • Page 534 F001 3743 RADIUS Authentication Shared Secret F202 (none) PTP Basic Configuration (Read/Write Setting) 3750 PTP Strict Power Profile 0 to 1 F102 0 (Disabled) 3751 PTP Domain Number 0 to 255 F001 B-24 L30 Line Current Differential System GE Multilin...
  • Page 535 3899 Remote Phase VT 1 Connection 0 to 1 F100 0 (Wye) 389A Remote Phase VT 1 Secondary 25 to 240 F001 389B Remote Phase VT 1 Ratio 1 to 24000 F060 GE Multilin L30 Line Current Differential System B-25...
  • Page 536 ...Repeated for Field Contact Input 36 3A8C ...Repeated for Field Contact Input 37 3A97 ...Repeated for Field Contact Input 38 3AA2 ...Repeated for Field Contact Input 39 3AAD ...Repeated for Field Contact Input 40 B-26 L30 Line Current Differential System GE Multilin...
  • Page 537 0 (None) 3E3B Field Shared Output 1 Channel Dest 2 1 to 15 F001 3E3C Field Shared Output 1 Events 0 to 1 F102 1 (Enabled) 3E3D ...Repeated for Field Shared Output 2 GE Multilin L30 Line Current Differential System B-27...
  • Page 538 ...Repeated for Field Unit 5 3FE5 ...Repeated for Field Unit 6 3FEE ...Repeated for Field Unit 7 3FF7 ...Repeated for Field Unit 8 Passwords (Read/Write Command) 4000 Command Password Setting 0 to 4294967295 F202 (none) B-28 L30 Line Current Differential System GE Multilin...
  • Page 539 Channel Asymmetry Compensation 0 to 4294967295 F300 406C Charging Current Compensation 0 to 1 F102 0 (Disabled) 406D Local Relay ID 0 to 255 F001 406E Maximum Channel Asymmetry 0 to 10 F001 GE Multilin L30 Line Current Differential System B-29...
  • Page 540 F003 30000 40C0 DNP IIN Time Synchronization Bit Period 1 to 10080 F001 1440 40C1 DNP Message Fragment Size 30 to 2048 F001 40C2 DNP Client Address 3 0 to 4294967295 F003 B-30 L30 Line Current Differential System GE Multilin...
  • Page 541 0 to 1 F102 0 (Disabled) 4169 Simple Network Time Protocol (SNTP) Server IP Address 0 to 4294967295 F003 416B Simple Network Time Protocol (SNTP) UDP Port Number 1 to 65535 F001 GE Multilin L30 Line Current Differential System B-31...
  • Page 542 ...Repeated for User-Programmable LED 7 42D5 ...Repeated for User-Programmable LED 8 42D8 ...Repeated for User-Programmable LED 9 42DB ...Repeated for User-Programmable LED 10 42DE ...Repeated for User-Programmable LED 11 42E1 ...Repeated for User-Programmable LED 12 B-32 L30 Line Current Differential System GE Multilin...
  • Page 543 ...Repeated for Route 3 4382 ...Repeated for Route 4 4388 ...Repeated for Route 5 438E ...Repeated for Route 6 Installation (Read/Write Setting) 43E0 Relay Programmed State 0 to 1 F133 0 (Not Programmed) GE Multilin L30 Line Current Differential System B-33...
  • Page 544 0 to 12 F560 0 (None) 4607 87L In-Zone Transformer Location 0 to 2 F562 0 (Local-Tap) Breaker Control (Read/Write Settings) (2 modules) 47D0 Breaker 1 Function 0 to 1 F102 0 (Disabled) B-34 L30 Line Current Differential System GE Multilin...
  • Page 545 Raw Field Data AC3 Mag 0 to 0.001 0.001 F003 4E08 Raw Field Data AC3 Angle 0 to 0.01 degree F002 4E09 Raw Field Data AC4 Mag 0 to 0.001 0.001 F003 GE Multilin L30 Line Current Differential System B-35...
  • Page 546 ...Repeated for RTD Input 9 54B4 ...Repeated for RTD Input 10 54C8 ...Repeated for RTD Input 11 54DC ...Repeated for RTD Input 12 54F0 ...Repeated for RTD Input 13 5504 ...Repeated for RTD Input 14 B-36 L30 Line Current Differential System GE Multilin...
  • Page 547 ...Repeated for FlexLogic Timer 11 5858 ...Repeated for FlexLogic Timer 12 5860 ...Repeated for FlexLogic Timer 13 5868 ...Repeated for FlexLogic Timer 14 5870 ...Repeated for FlexLogic Timer 15 5878 ...Repeated for FlexLogic Timer 16 GE Multilin L30 Line Current Differential System B-37...
  • Page 548 Neutral Time Overcurrent 1 Block 0 to 4294967295 F300 5B09 Neutral Time Overcurrent 1 Target 0 to 2 F109 0 (Self-reset) 5B0A Neutral Time Overcurrent 1 Events 0 to 1 F102 0 (Disabled) B-38 L30 Line Current Differential System GE Multilin...
  • Page 549 0 to 65.535 0.001 F001 1000 5E76 CT Fail 1 Target 0 to 2 F109 0 (Self-reset) 5E77 CT Fail 1 Events 0 to 1 F102 0 (Disabled) 5E78 ...Repeated for CT Fail 2 GE Multilin L30 Line Current Differential System B-39...
  • Page 550 0 to 1 F102 0 (Disabled) 6201 Autoreclose 1 Initiate 0 to 4294967295 F300 6203 Autoreclose 1 Block 0 to 4294967295 F300 6205 Autoreclose 1 Max Number of Shots 1 to 4 F001 B-40 L30 Line Current Differential System GE Multilin...
  • Page 551 Negative Sequence Overvoltage 1 Pickup Delay 0 to 600 0.01 F001 6444 Negative Sequence Overvoltage 1 Reset Delay 0 to 600 0.01 F001 6445 Negative Sequence Overvoltage 1 Block 0 to 4294967295 F300 GE Multilin L30 Line Current Differential System B-41...
  • Page 552 Neutral Directional Overcurrent 1 Target 0 to 2 F109 0 (Self-reset) 7239 Neutral Directional Overcurrent 1 Block 0 to 4294967295 F300 723B Neutral Directional Overcurrent 1 Events 0 to 1 F102 0 (Disabled) B-42 L30 Line Current Differential System GE Multilin...
  • Page 553 0 to 1000 min. F001 778F Thermal Protection 1 Reset 0 to 4294967295 F300 7791 Thermal Protection 1 Block 0 to 4294967295 F300 7793 Thermal Protection 1 Target 0 to 2 F109 0 (Self-reset) GE Multilin L30 Line Current Differential System B-43...
  • Page 554 Underfrequency (Read/Write Setting) (6 modules) 7A80 Underfrequency 1 Function 0 to 1 F102 0 (Disabled) 7A81 Underfrequency 1 Block 0 to 4294967295 F300 7A83 Underfrequency 1 Min Current 0.1 to 1.25 0.01 F001 B-44 L30 Line Current Differential System GE Multilin...