1. Manuals
  2. Brands
  3. GE Manuals
  4. Relays
  5. ML Series 350
  6. Instruction manual

GE Multilin 350 Series Instruction Manual

Feeder protection system
Hide thumbs Also See for Multilin 350 Series:
Table of Contents

Advertisement

Quick Links

GE Digital Energy
Multilin
350 revision: 1.2
Manual P/N: 1601-9091-A4
GE publication code: GEK-113509C
Copyright © 2009 GE Multilin
GE Multilin
215 Anderson Avenue, Markham, Ontario
Canada L6E 1B3
Tel: (905) 294-6222 Fax: (905) 201-2098
Internet:
http://www.GEmultilin.com
*1601-9086-A4*
Courtesy of NationalSwitchgear.com
Feeder Protection System
Instruction manual
Feeder protection and control
Management System is
registered to ISO9001:2000
350
GE Multilin's Quality
QMI # 005094

Advertisement

Table of Contents
loading

Related Manuals for GE Multilin 350 Series

Summary of Contents for GE Multilin 350 Series

  • Page 1 Feeder Protection System Feeder protection and control Instruction manual 350 revision: 1.2 Manual P/N: 1601-9091-A4 GE publication code: GEK-113509C Copyright © 2009 GE Multilin GE Multilin 215 Anderson Avenue, Markham, Ontario Canada L6E 1B3 Tel: (905) 294-6222 Fax: (905) 201-2098 Internet: http://www.GEmultilin.com...
  • 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

    Table of Contents 1. INTRODUCTION Overview ......................1 - 1 Cautions and warnings ................1 - 2 Description of the 350 Feeder Protection System........1 - 3 350 order codes .................... 1 - 6 Specifications ....................1 - 7 Password security........................1 - 7 Protection specifications ......................1 - 7 Data capture ..........................1 - 8 Control specifications......................1 - 9...
  • Page 4 Configuring serial communications................3 - 14 Using the Quick Connect feature ..................3 - 15 Configuring Ethernet communications ................3 - 16 Connecting to the relay......................3 - 17 Working with setpoints and setpoint files ..............3 - 18 Engaging a device ........................3 - 18 Entering setpoints........................3 - 18 File support ..........................3 - 20 Using setpoints files.......................3 - 20...
  • Page 5 6. SETPOINTS Setpoints Main Menu ................... 6 - 1 Setpoint entry methods......................6 - 2 Common setpoints ........................6 - 3 Logic diagrams..........................6 - 4 Setting text abbreviations ....................6 - 4 S1 Relay setup....................6 - 5 Clock ...............................6 - 5 Password security........................6 - 7 Access passwords ........................6 - 8 Communications ........................6 - 10 RS485 interface ........................6 - 10...
  • Page 6 7. MAINTENANCE M1 Relay information .................. 7 - 2 M3 Breaker maintenance................7 - 3 Trip coil............................7 - 3 Close coil ............................7 - 6 Breaker trip counter........................ 7 - 9 M4 Breaker monitor ..................7 - 11 350 FEEDER PROTECTION SYSTEM – INSTRUCTION MANUAL Courtesy of NationalSwitchgear.com...

  • Page 7: Introduction

    Digital Energy Multilin 350 Feeder Protection System Chapter 1: Introduction Introduction 1.1 Overview The 350 is a microprocessor-based relay for primary and backup over-current protection of medium and low voltage distribution feeders. The relay is also suitable for providing over-current protection for small and medium size motors, transformers, generators, and distribution bus-bars.

  • Page 8: Cautions And Warnings

    CAUTIONS AND WARNINGS CHAPTER 1: INTRODUCTION 1.2 Cautions and warnings Before attempting to install or use this device, it is imperative that all caution and danger indicators in this manual are reviewed to help prevent personal injury, equipment damage, or downtime. The following icons are used to indicate notes, cautions, and dangers. Figure 1-1: Note icons used in the documentation NOTE CAUTION...

  • Page 9: Description Of The 350 Feeder Protection System

    CHAPTER 1: INTRODUCTION DESCRIPTION OF THE 350 FEEDER PROTECTION SYSTEM 1.3 Description of the 350 Feeder Protection System Relay functions are controlled by two processors: a Freescale MPC5554 32-bit microprocessor measures all analog signals and digital inputs and controls all output relays;...
  • Page 10 DESCRIPTION OF THE 350 FEEDER PROTECTION SYSTEM CHAPTER 1: INTRODUCTION Figure 1-2: Single line diagram TRIP CLOSE 50BF METERI G 50G/ TRA SIE T RECORDER EVE T RECORDER 350 RELAY LOAD 898727A1.CDR Table 1: 350 protection functions ANSI device Description Thermal Model Phase Instantaneous Overcurrent Neutral Instantaneous Overcurrent...
  • Page 11 CHAPTER 1: INTRODUCTION DESCRIPTION OF THE 350 FEEDER PROTECTION SYSTEM Figure 1-3: 350 Main Menu structure ACTUAL VALUES QUICK SETUP SETPOINTS MAINTENANCE ACTUAL VALUES A1 STATUS A2 METERING A3 RECORDS QUICK SETUP PH CT PRIMARY ▼ [SENS] GND CT PRIMARY PH TOC FUNCTION PHASE TOC GND TOC FUNCTION...

  • Page 12: Order Codes

    350 ORDER CODES CHAPTER 1: INTRODUCTION 1.4 350 order codes The information to specify an 350 relay is provided in the following order code figure. Figure 1-4: 350 order codes 1–6 350 FEEDER PROTECTION SYSTEM – INSTRUCTION MANUAL Courtesy of NationalSwitchgear.com...

  • Page 13: Specifications

    CHAPTER 1: INTRODUCTION SPECIFICATIONS 1.5 Specifications Specifications are subject to change without notice. NOTE: NOTE 1.5.1 Password security PASSWORD SECURITY Master Reset Password: ........8 to 10 alpha-numeric characters Settings Password:..........3 to 10 alpha-numeric characters for local and remote access Control Password:..........3 to 10 alpha-numeric characters for local and remote access 1.5.2 Protection specifications PHASE/NEUTRAL/GROUND TIME OVERCURRENT (51P/51N/51G)

  • Page 14: Data Capture

    SPECIFICATIONS CHAPTER 1: INTRODUCTION SENSITIVE GROUND INSTANTANEOUS OVERCURRENT (50SG) Pickup Level (Gnd IOC):........0.005 to 3 x CT in steps of 0.001 x CT Dropout Level:............97 to 99% of Pickup @ I > 0.1 x CT Pickup - 0.002 x CT @ I < 0.1 x CT Time Delay:............

  • Page 15: Control Specifications

    CHAPTER 1: INTRODUCTION SPECIFICATIONS EVENT RECORDER Number of events:..........256 Header: ..............relay name, order code, firmware revision Content:..............event number, date of event, cause of event, per-phase current, ground current, sensitive ground current, neutral current, system frequency, thermal capacity Data Storage:............RAM - Battery backed-up CLOCK Setup:................Date and time Daylight Saving Time...

  • Page 16: Inputs Specifications

    SPECIFICATIONS CHAPTER 1: INTRODUCTION 1.5.5 Inputs specifications CONTACT INPUTS Inputs: ..............8 Selectable thresholds: ........17, 33, 84, 166 VDC Recognition time:..........1/2 cycle Debounce time: ........... 1 to 64 ms, selectable, in steps of 1 ms Continuous current draw:....... 2 mA Type: .................

  • Page 17: Outputs Specifications

    CHAPTER 1: INTRODUCTION SPECIFICATIONS 1.5.6 Outputs specifications FORM-A RELAYS Configuration:............2 (two) electromechanical Contact material: ..........silver-alloy Operate time:............<8 ms Continuous current: ...........10 A Make and carry for 0.2s:........30 A per ANSI C37.90 Break (DC inductive, L/R=40 ms):....24 V / 1 A 48 V / 0.5 A 125 V / 0.3 A 250 V / 0.2 A...

  • Page 18: Communications Specifications

    SPECIFICATIONS CHAPTER 1: INTRODUCTION 1.5.8 Communications specifications SERIAL RS485 port: ............Opto-coupled Baud rates: ............up to 115 kbps Response time: ............ 1 ms typical Parity: ............... None, Odd, Even Protocol:..............Modbus RTU, DNP 3.0, IEC 60870-5-103 Maximum distance:........... 1200 m (4000 feet) Isolation: ..............

  • Page 19: Physical Specifications

    CHAPTER 1: INTRODUCTION SPECIFICATIONS TYPE TESTS Relative Humidity Cyclic: .........IEC 60068-2-30: 55°C at 95% RH Hot: ................IEC 60068-2-2 (Hot Start) 16 hours /+85°C Cold: ................IEC 60068-2-1 (Cold Start) 16 hours / -40°C Dielectric Strength:..........IEC 60255-5: 2300 VAC Insulation Resistance:........IEC 60255-5: >100 MΩ / 500 VDC / 10 s Impulse Voltage:..........IEC 60255-5: 5 kV / 0.5 J Sinusoidal Vibration:..........IEC 60255-21-1: 2 g, Class 2 Shock and Bump:..........IEC 60255-21-2: 10 g / 20 g / 30 g, Class 2...
  • Page 20 SPECIFICATIONS CHAPTER 1: INTRODUCTION 1–14 350 FEEDER PROTECTION SYSTEM – INSTRUCTION MANUAL Courtesy of NationalSwitchgear.com...

  • Page 21: Installation

    Digital Energy Multilin 350 Feeder Protection System Chapter 2: Installation Installation 2.1 Mechanical installation This section describes the mechanical installation of the 350 system, including dimensions for mounting and information on module withdrawal and insertion. 350 FEEDER PROTECTION SYSTEM – INSTRUCTION MANUAL 2–1 Courtesy of NationalSwitchgear.com...

  • Page 22: Dimensions

    MECHANICAL INSTALLATION CHAPTER 2: INSTALLATION 2.1.1 Dimensions The dimensions of the 350 are shown below. Additional dimensions for mounting and panel cutouts are shown in the following sections. Figure 2-1: 350 dimensions 2.1.2 Product identification The product identification label is located on the side panel of the 350. This label indicates the product model, serial number, firmware revision, and date of manufacture.

  • Page 23: Mounting

    CHAPTER 2: INSTALLATION MECHANICAL INSTALLATION 2.1.3 Mounting STANDARD PANEL MOUNT The standard panel mount and cutout dimensions are illustrated below. To avoid the potential for personal injury due to fire hazards, ensure the unit is CAUTION: mounted in a safe location and/or within an appropriate enclosure. CAUTION Figure 2-3: Panel mounting Figure 2-4: Mounting tabs (optional)
  • Page 24 MECHANICAL INSTALLATION CHAPTER 2: INSTALLATION From the rear of the panel screw the case into the panel at the 8 screw positions shown above. If added security is required, bend the retaining "V"tabs outward, to about 90°. These tabs are located on the sides of the case and appear as shown above. The relay can now be inserted and can be panel wired.
  • Page 25 CHAPTER 2: INSTALLATION MECHANICAL INSTALLATION MOUNTING USING THE S1/S2/MDP/IAC OR SR735 ADAPTER PLATE The adaptor plate for mounting the 350 directly over the existing S1/S2/MDP/IAC or SR735 mounting plate, is shown below: 350 FEEDER PROTECTION SYSTEM – INSTRUCTION MANUAL 2–5 Courtesy of NationalSwitchgear.com...

  • Page 26: Unit Withdrawal And Insertion

    MECHANICAL INSTALLATION CHAPTER 2: INSTALLATION 2.1.4 Unit withdrawal and insertion 8 - 32X3/8IN P/HD PHIL BLK GE PART # 1408-0306; (QTY:8) TIGHTENING TORQUE: 15 IN LB THE HANDLE MUST BE ROTATED 90 ⁰ WHILE SLIDING THE 350 DRAW-OUT UNIT INTO THE CAPTIVE UNIT...

  • Page 27: Electrical Installation

    CHAPTER 2: INSTALLATION ELECTRICAL INSTALLATION 2.2 Electrical installation Figure 2-6: Typical wiring diagram A B C FEEDER CTs FEEDER CONTROL POWER E5 D5 E6 D6 E7 D7 E8 D8 B1 A1 chassis POWER SUPPLY Breaker Aux Contacts 52a (C1 #1) 1 TRIP 52b (C1 #2) INPUT 3...

  • Page 28: Terminal Identification

    ELECTRICAL INSTALLATION CHAPTER 2: INSTALLATION 2.2.1 Terminal identification Figure 2-7: 350 Terminal Identification IRIG-B + POWER SUPPLY + INPUT 1 IRIG-B - POWER SUPPLY - RS485 + CHASSIS GND RS485 - INPUT 2 TRIP COM RS485 COM CHASSIS GND TRIP N/O INPUT 3 RESERVED TRIP OPTV...

  • Page 29: Phase Sequence And Transformer Polarity

    CHAPTER 2: INSTALLATION ELECTRICAL INSTALLATION 2.2.2 Phase sequence and transformer polarity For correct operation of the relay features, the user must follow the instrument transformer polarities, shown in the Typical Wiring Diagram. Note the solid square markings shown with all instrument transformer connections. When the connections adhere to this drawing, the arrow shows the direction of power flow for positive watts and the positive direction of lagging vars.

  • Page 30: Zero Sequence Ct Installation

    ELECTRICAL INSTALLATION CHAPTER 2: INSTALLATION Figure 2-8: Ground/Sensitive Ground wiring SOURCE SR350 PHASE CURRENT PHASE CURRENT INPUTS GROUND GROUND GROUND GROUND CURRENT INPUT GROUND CURRENT INPUT GROUND CURRENT INPUT GROUND CURRENT INPUT GROUND CURRENT INPUT GROUND CURRENT INPUT USED FOR POLARIZING USED FOR POLARIZING WITH ZERO SEQUENCE CT WITH ZERO SEQUENCE CT...

  • Page 31: Control Power

    CHAPTER 2: INSTALLATION ELECTRICAL INSTALLATION 2.2.6 Control power Control power supplied to the relay must match the installed power supply range. If the CAUTION: applied voltage does not match, damage to the unit may occur. All grounds MUST be connected for safe, normal operation regardless of control power supply type. CAUTION The label found on the relay specifies its order code or model number.
  • Page 32 ELECTRICAL INSTALLATION CHAPTER 2: INSTALLATION • If the initiating feature resets, but the breaker does not change state, the output relay will be reset after a default interval of 2 seconds. • If neither of the breaker auxiliary contacts, 52a nor 52b, is programmed to a contact input, the Trip Relay is de-energized after either the delay programmed in the Breaker Failure feature, or a default interval of 100 ms after the initiating input resets.

  • Page 33: Contact Inputs

    CHAPTER 2: INSTALLATION ELECTRICAL INSTALLATION Figure 2-11: Trip and Close circuits with no voltage monitoring DC + DC + Output Relay 1 (TRIP) Output Relay 2 (CLOSE) contact contact Trip Close Coil Coil 898785.cdr DC - DC - All AUX contacts are shown when the breaker is open. NOTE: NOTE Figure 2-12: Trip and close circuits with voltage monitoring...

  • Page 34: Serial Communications

    ELECTRICAL INSTALLATION CHAPTER 2: INSTALLATION A wet contact has one side connected to the positive terminal of an external DC power supply. The other side of this contact is connected to the required contact input terminal. In addition, the negative side of the external source must be connected to the relay’s DC negative rail at Terminal C11.

  • Page 35: Irig-B

    Figure 2-15: IRIG-B connection GPS SATELLITE SYSTEM GPS CONNECTION OPTIONAL GE MULTILIN IRIG-B 350 RELAY RG58/59 COAXIAL CABLE TIME CODE GENERATOR IRIG-B(+)
  • Page 36 ELECTRICAL INSTALLATION CHAPTER 2: INSTALLATION 2–16 350 FEEDER PROTECTION SYSTEM – INSTRUCTION MANUAL Courtesy of NationalSwitchgear.com...

  • Page 37: Interfaces

    Digital Energy Multilin 350 Feeder Protection System Chapter 3: Interfaces Interfaces There are two methods of interfacing with the 350 Feeder Protection System. • Interfacing via the relay keypad and display. • Interfacing via the EnerVista SR3 Setup software. This section provides an overview of the interfacing methods available with the 350 using the relay control panels and EnerVista SR3 Setup software.

  • Page 38: Description

    FRONT CONTROL PANEL INTERFACE CHAPTER 3: INTERFACES 3.1 Front control panel interface Figure 3-1: 350 Feeder Protection System Front Panel GE Multilin 350 Feeder Protection System △ ▲ MENU ◁ ▷ ENTER ▼ ESCAPE ▽ RESET 898351A1.cdr 3.1.1 Description The relay front panel provides an interface with a liquid crystal display, LED status indicators, control keys, and a USB program port.

  • Page 39: Display

    CHAPTER 3: INTERFACES FRONT CONTROL PANEL INTERFACE 3.1.2 Display The 80-character liquid crystal display (LCD) allows visibility under varied lighting conditions. When the keypad and display are not being used, system information is displayed after a user-defined period of inactivity. Pressing the Menu key during the display of default message returns the display to the last message shown before the default message appeared.
  • Page 40 FRONT CONTROL PANEL INTERFACE CHAPTER 3: INTERFACES Figure 3-3: Typical paging operation from Main Menu selection △ A1 STATUS ACTUAL VALUES ▶ █ █ CLOCK A1 STATUS Back 1 click A2 METERING CONTACT INPUTS A3 RECORDS OUTPUT RELAYS ▽ Back ◁...

  • Page 41: Led Status Indicators

    CHAPTER 3: INTERFACES FRONT CONTROL PANEL INTERFACE The ESCAPE key is also dual purpose. It is used to exit the sub-pages and to cancel a setpoint change. The MESSAGE ◄ key can also be used to exit sub-pages and to cancel setpoint changes.

  • Page 42: Relay Messages

    FRONT CONTROL PANEL INTERFACE CHAPTER 3: INTERFACES 52a contact and closed 52b contact. If both 52a and 52b contacts are open, due to a breaker being racked out from the switchgear, both the Breaker Open and Breaker Closed LED Indicators will be off. It is strongly recommended to detect the breaker status by using both 52a and 52b NOTE: contacts.

  • Page 43: Self-Test Errors

    CHAPTER 3: INTERFACES FRONT CONTROL PANEL INTERFACE A4 TARGET MESSAGES Ph IOC1 Trip State: Operate ▼ Phase:A Cause <Function> The first line contains information of the cause of operation (the name of the operated element), and the element function. State: Operate This line from the display shows the state of the element: Pickup, Operated, Alarm.

  • Page 44: Flash Messages

    FRONT CONTROL PANEL INTERFACE CHAPTER 3: INTERFACES Table 1: Minor Self-test Errors Self-test Error Latched Description of How Often the Test What to do Message Target Problem is Performed Message? MAINTENANCE A bad IRIG-B input Every 5 seconds Ensure IRIG-B cable is ALERT: IRIG-B signal has been connected, check cable...
  • Page 45 CHAPTER 3: INTERFACES FRONT CONTROL PANEL INTERFACE INVALID PASSWORD This flash message appears upon an attempt to enter an incorrect password, as part of password security. AR IN PROGRESS This flash message appears when the Autoreclosure is in progress performing the configured sequence.

  • Page 46: Software Setup

    Although settings can be entered manually using the control panel keys, a PC can be used to download setpoints through the communications port. The EnerVista SR3 Setup software is available from GE Multilin to make this as convenient as possible. With EnerVista SR3 Setup running, it is possible to: 3–10...

  • Page 47: Hardware And Software Requirements

    At least 100 MB of hard disk space is available. • At least 256 MB of RAM is installed. The EnerVista SR3 Setup software can be installed from either the GE EnerVista CD or the GE Multilin website at http://www.GEmultilin.com. 3.2.2.2 Installing the EnerVista SR3 Setup software After ensuring the minimum requirements indicated earlier, use the following procedure to install the EnerVista SR3 Setup software from the enclosed GE EnerVista CD.
  • Page 48 SOFTWARE SETUP CHAPTER 3: INTERFACES EnerVista Launchpad will obtain the latest installation software from the Web or CD and automatically start the installation process. A status window with a progress bar will be shown during the downloading process. Select the complete path, including the new directory name, where the EnerVista SR3 Setup software will be installed.
  • Page 49 CHAPTER 3: INTERFACES SOFTWARE SETUP If you are going to communicate from your computer to the 350 Relay using the USB port: 10. Plug the USB cable into the USB port on the 350 Relay then into the USB port on your computer.

  • Page 50: Connecting Enervista Sr3 Setup To The Relay

    (for USB communications) or to the RS485 terminals on the back of the device (for RS485 communications). This example demonstrates an USB connection. For RS485 communications, the GE Multilin F485 converter will be required. Refer to the F485 manual for additional details. To configure the relay for Ethernet communications, see Configuring Ethernet Communications below.

  • Page 51: Using The Quick Connect Feature

    CHAPTER 3: INTERFACES SOFTWARE SETUP 10. Click OK when the relay order code has been received. The new device will be added to the Site List window (or Online window) located in the top left corner of the main EnerVista SR3 Setup window. The 350 Site Device has now been configured for USB communications.

  • Page 52: Configuring Ethernet Communications

    Install and start the latest version of the EnerVista SR3 Setup Setup software (available NOTE from the GE EnerVista CD). See the previous section for the installation procedure. Click on the Device Setup button to open the Device Setup window and click the Add Site button to define a new site.

  • Page 53: Connecting To The Relay

    CHAPTER 3: INTERFACES SOFTWARE SETUP Enter the IP address, slave address, and Modbus port values assigned to the 350 relay (from the S1 RELAY SETUP > COMMUNICATIONS > ETHERNET menu). Click the Read Order Code button to connect to the 350 and upload the order code. If a communications error occurs, ensure that the Ethernet communication values correspond to the relay setting values.

  • Page 54: Working With Setpoints And Setpoint Files

    SOFTWARE SETUP CHAPTER 3: INTERFACES The "Front Panel" settings window will open with a corresponding status indicator on the lower left of the EnerVista SR3 Setup window. If the status indicator is red, verify that the serial, USB, or Ethernet cable is properly connected to the relay, and that the relay has been properly configured for communications (steps described earlier).
  • Page 55 CHAPTER 3: INTERFACES SOFTWARE SETUP Select the PHASE CT PRIMARY setpoint by clicking anywhere in the parameter box. This will display three arrows: two to increment/decrement the value and another to launch the numerical keypad. Clicking the arrow at the end of the box displays a numerical keypad interface that allows the user to enter a value within the setpoint range displayed near the top of the keypad: Click "="...

  • Page 56: File Support

    SOFTWARE SETUP CHAPTER 3: INTERFACES 3.2.4.3 File support Opening any EnerVista SR3 Setup file will automatically launch the application or provide focus to the already opened application. If the file is a settings file (has a ‘SR3’ extension) which had been removed from the Settings List tree menu, it will be added back to the Settings List tree.

  • Page 57: Creating A New Setpoint File

    CHAPTER 3: INTERFACES SOFTWARE SETUP In the files pane, right-click on Files and select the Add Existing Setting File item as shown: The Open dialog box will appear, prompting the user to select a previously saved setpoint file. As for any other MS Windows® application, browse for the file to be added then click Open.

  • Page 58: Upgrading Setpoint Files To A New Revision

    SOFTWARE SETUP CHAPTER 3: INTERFACES In the File pane, right click on File and select the New Settings File item. The following box will appear, allowing for the configuration of the setpoint file for the correct firmware version. It is important to define the correct firmware version to ensure that setpoints not available in a particular version are not downloaded into the relay.

  • Page 59: Printing Setpoints And Actual Values

    CHAPTER 3: INTERFACES SOFTWARE SETUP For example, if the firmware revision is L0L01MA120.000 (Firmware Revision 1.20) and the current setpoint file revision is 1.10, change the setpoint file revision to “1.2x”. Enter any special comments about the setpoint file in the "Description" field. Select the desired firmware version from the "New File Version"...

  • Page 60: Printing Actual Values From A Connected Device

    SOFTWARE SETUP CHAPTER 3: INTERFACES The Print/Export Options dialog box will appear. Select Settings in the upper section and select either Include All Features (for a complete list) or Include Only Enabled Features (for a list of only those features which are currently used) in the filtering section and click OK.

  • Page 61: Loading Setpoints From A File

    To upgrade the 350 firmware, follow the procedures listed in this section. Upon successful completion of this procedure, the 350 will have new firmware installed with the factory default setpoints.The latest firmware files are available from the GE Multilin website at http:// www.GEmultilin.com.
  • Page 62 SOFTWARE SETUP CHAPTER 3: INTERFACES The EnerVista SR3 Setup software will request the new firmware file. Locate the folder that contains the firmware files to load into the 350. The firmware filename has the following format: L0 L01 M A 100 . 000 Modification Number (000 = none) Firmware Rev # Board Assembly Rev #...

  • Page 63: Advanced Enervista Sr3 Setup Features

    CHAPTER 3: INTERFACES SOFTWARE SETUP After successfully updating the 350 firmware, the relay will not be in service and will require setpoint programming. To communicate with the relay, the communication settings may have to be manually reprogrammed. When communications is established, the saved setpoints must be reloaded back into the relay.

  • Page 64: Transient Recorder (Waveform Capture)

    SOFTWARE SETUP CHAPTER 3: INTERFACES • A Base curve can be plotted for reference, to customize the operating curve. The Blue colored curve in the picture (in both curves) is a reference curve. It can be Extremely Inverse, Definite Time, etc. •...
  • Page 65 CHAPTER 3: INTERFACES SOFTWARE SETUP DELTA TRIGGER TIME & DATE CURSOR LINE POSITION VECTOR DISPLAY SELECT Indicates time difference Displays the time and date Click here to open a new graph Indicates the cursor line position between the two cursor of the Trigger.
  • Page 66 SOFTWARE SETUP CHAPTER 3: INTERFACES Preference Button The following window will appear: Change the color of each graph as desired, and select other options as required, by checking the appropriate boxes. Click OK to store these graph attributes, and to close the window.

  • Page 67: Protection Summary

    CHAPTER 3: INTERFACES SOFTWARE SETUP 3.2.6.3 Protection summary Protection Summary is a single screen which holds the summarized information of different settings from Grouped Elements, Control Elements and Maintenance screens. Protection Summary Screen allows the User to: • view the output relay assignments for the elements •...

  • Page 68: Password Security

    SOFTWARE SETUP CHAPTER 3: INTERFACES 3.2.6.4 Password security Password security is an optional feature of the 350 which can be setup using the SR3 EnerVista Setup software. The password system has been designed to facilitate a hierarchy for centralized management. This is accomplished through a Master level access password which can be used for resetting lower level access passwords and higher level privileged operations.
  • Page 69 CHAPTER 3: INTERFACES SOFTWARE SETUP Now that the Master Reset Password has been programmed, enter it again to log in to the Master Access level. The Master Level permits setup of the Remote and Local Passwords. If the Master Reset Password has been lost, record the Encrypted Key and contact the factory to have it decrypted.
  • Page 70 SOFTWARE SETUP CHAPTER 3: INTERFACES Initial setup of the Local Setpoint and Local Control passwords requires the Master Access level. If Overwrite Local Passwords is set to YES, Local passwords can be changed remotely only (over RS485 or Ethernet). If Overwrite Local Passwords is set to NO, Local passwords can be changed locally only (over USB or keypad).

  • Page 71: Actual Values

    Digital Energy Multilin 350 Feeder Protection System Chapter 4: Actual values Actual values 4.1 Actual values overview Measured values, maintenance, and fault analysis information are accessed in actual values mode. Actual value messages are organized into logical groups for easy reference as shown below.
  • Page 72 ACTUAL VALUES OVERVIEW CHAPTER 4: ACTUAL VALUES ACTUAL VALUES A1 STATUS A1 STATUS A2 METERING CLOCK A3 RECORDS CONTACT INPUTS A4 TARGET MESSAGES OUTPUT RELAYS ▼ LOGIC ELEMENTS VIRTUAL INPUTS REMOTE INPUTS REMOTE OUTPUTS C. INPUTS SUMMARY OUT RELAYS SUMMARY LOGIC ELEM SUMMARY A2 METERING PH A CURRENT...

  • Page 73: A1 Status

    CHAPTER 4: ACTUAL VALUES A1 STATUS 4.2 A1 Status A1 STATUS CLOCK A1 CLOCK CONTACT INPUTS CURRENT DATE ▼ OUTPUT RELAYS ▼ CURRENT TIME LOGIC ELEMENTS VIRTUAL INPUTS A1 CONTACT INPUTS REMOTE INPUTS CONTACT INPUT 1 REMOTE OUTPUTS ▼ C. INPUTS SUMMARY CONTACT INPUT 2 OUT RELAYS SUMMARY LOGIC ELEM SUMMARY...

  • Page 74: Clock

    A1 STATUS CHAPTER 4: ACTUAL VALUES 4.2.1 Clock PATH: ACTUAL VALUES > A1 STATUS > CLOCK CURRENT DATE Feb 12 2009 Range: Date in format shown Indicates today’s date. CURRENT TIME 09:17:12 Range: Time in format shown Indicates the current time of day. 4.2.2 Contact inputs PATH: ACTUAL VALUES >...

  • Page 75: Logic Elements

    CHAPTER 4: ACTUAL VALUES A1 STATUS OUTPUT RELAY 3 to 6 (Auxiliary Output Relays) Range: Off, On OUTPUT RELAY 7 (Critical Failure Relay) Range: Off, On The "ON" state indicates that the relay is in-service. 4.2.4 Logic elements PATH: ACTUAL VALUES > A1 STATUS > LOGIC ELEMENTS LOGIC ELEMENT 1 to 8 Range: Off, On The state “ON”...

  • Page 76: Contact Inputs Summary

    A1 STATUS CHAPTER 4: ACTUAL VALUES 4.2.8 Contact inputs summary C. INPUTS SUMMARY CI#5 CI#6 CI#3 CI#7 CI#4 CI#8 The display shows a summary of the states of all contact inputs. 4.2.9 Output relays summary PATH: ACTUAL VALUES > A1 STATUS > OUT RELAYS SUMMARY OUTPUT RELAYS SUMMARY TRIP RLY#5...
  • Page 77 CHAPTER 4: ACTUAL VALUES A1 STATUS GOOSE 1 TO 8 H.STATUS Range: OFF, ON Default: OFF 350 FEEDER PROTECTION SYSTEM – INSTRUCTION MANUAL 4–7 Courtesy of NationalSwitchgear.com...

  • Page 78: A2 Metering

    A2 METERING CHAPTER 4: ACTUAL VALUES 4.3 A2 Metering The relay measures all RMS currents and frequency. All quantities are recalculated every power system cycle and perform protection and monitoring functions. Displayed metered quantities are updated approximately three (3) times a second for readability. All phasors and symmetrical components are referenced to the phase A current phasor.

  • Page 79: A3 Records

    CHAPTER 4: ACTUAL VALUES A3 RECORDS 4.4 A3 Records The 350 has an event recorder which runs continuously. All event records are stored in memory such that information is maintained for up to 3 days even after losing relay control power. The events are displayed from newest to oldest event. Each event has a header message containing a summary of the event that occurred, and is assigned an event number equal to the number of events that have occured since the recorder was cleared.
  • Page 80 A3 RECORDS CHAPTER 4: ACTUAL VALUES Each event is saved with event number, date and time, and contains information such as per phase current, ground current, and system frequency. The Event Recorder can be cleared from . The following tables ACTUAL VALUES >...
  • Page 81 CHAPTER 4: ACTUAL VALUES A3 RECORDS Displayed Event Description Displayed Event Description Breaker Operation Breaker operated Phase IOC2 C DPO Instantaneous OC2 Phase C dropped Close Coil Alarm The Close coil Phase IOC2 A OP Instantaneous OC2 monitor detected Phase A operated open circuit Trip Coil Alarm The Open coil...
  • Page 82 A3 RECORDS CHAPTER 4: ACTUAL VALUES Displayed Event Description Displayed Event Description Phase IOC1 A OP Instantaneous Neutral IOC1 PKP Neutral OC1 Phase A Instantaneous OC1 operated picked up Phase IOC1 B OP Instantaneous Neutral IOC1 DPO Neutral OC1 Phase B Instantaneous OC1 operated dropped out...

  • Page 83: Transient Records

    CHAPTER 4: ACTUAL VALUES A3 RECORDS Displayed Event Description Displayed Event Description Block 1 Trip Trip command to Breaker Connected Detects breaker the output relay 1 “ connected when TRIP” blocked the programmed breaker connected input energized Block 2 Close Close command AR initiate AR initiate input...

  • Page 84: Clear Thermal Capacity Record

    A3 RECORDS CHAPTER 4: ACTUAL VALUES 4.4.5 Clear thermal capacity record PATH: ACTUAL VALUES > A3 RECORDS > CLEAR THERM CAP CLEAR Range: No, Yes When set to "Yes," pressing the ENTER key will clear all thermal capacity records. 4–14 350 FEEDER PROTECTION SYSTEM –...

  • Page 85: A4 Target Messages

    CHAPTER 4: ACTUAL VALUES A4 TARGET MESSAGES 4.5 A4 Target messages Target messages are automatically displayed for any active condition on the relay such as pickups, trips, or alarms. The target messages shown below are displayed. The relay displays the most recent event first, and after 5 seconds starts rolling up the other target messages, until the Reset command is initiated.
  • Page 86 A4 TARGET MESSAGES CHAPTER 4: ACTUAL VALUES Phase IOC1 OP Phase TOC OP Neutral IOC1 OP Phase A IOC1 OP Phase A TOC OP Neutral IOC2 OP Phase B IOC1 OP Phase B TOC OP Phase C IOC1 OP Phase C TOC OP Phase IOC2 OP Ground TOC OP Phase A IOC2 OP...
  • Page 87 CHAPTER 4: ACTUAL VALUES A4 TARGET MESSAGES Contact Input 1 ON Remote Input 1 ON Contact Input 8 ON Virtual Input 1 ON Remote Input 32 ON Virtual Input 32 ON Setpoint Group 1 Contact Input 1 OFF Setpoint Group 2 Remote Input 1 OFF Contact Input 8 OFF Virtual Input 1 OFF...
  • Page 88 A4 TARGET MESSAGES CHAPTER 4: ACTUAL VALUES • PH IOC1 DELAY = 0.20 s When current greater than the IOC1 pickup level is applied, the 350 display shows the following target message: A4 TARGET MESSAGES Ph IOC1 Alarm STATE: PKP After the 200 ms time delay expires, the display shows the following message only: A4 TARGET MESSAGES Ph IOC1 Alarm...

  • Page 89: Quick Setup - Front Control Panel

    Digital Energy Multilin 350 Feeder Protection System Chapter 5: Quick setup - Front control panel Quick setup - Front control panel The “Quick Setup” utility is part of the 350 relay main menu, and can be used for quick and easy programming.
  • Page 90 CHAPTER 5: QUICK SETUP - FRONT CONTROL PANEL ACTUAL VALUES QUICK SETUP QUICK SETUP SETPOINTS PH CT PRIMARY MAINTENANCE ▼ [SENS] GND CT PRIMARY PH TOC FUNCTION PHASE TOC PH TOC PICKUP GND TOC FUNCTION ▼ NTRL TOC FUNCTION PH TOC CURVE PH IOC1 FUNCTION PH TOC TDM GND IOC1 FUNCTION...
  • Page 91 CHAPTER 5: QUICK SETUP - FRONT CONTROL PANEL QUICK SETUP SETTINGS 5.1 Quick Setup settings This section provides an overview of the interfacing methods available with the 350 using the front control panel. For additional details on interface parameters (for example, settings, actual values, etc.), refer to the individual chapters.
  • Page 92 QUICK SETUP SETTINGS CHAPTER 5: QUICK SETUP - FRONT CONTROL PANEL SENS GND TOC PICKUP Range: 0.005 to 3.000 x CT Default: 1.000 x CT SENS GND TOC CURVE Range: ANSI Extremely/Very/Moderately/Normally Inverse; Definite Time; IEC Curve A/B/C /Short Inverse; IAC Extreme/Very/Inverse/Short Inverse;...
  • Page 93 CHAPTER 5: QUICK SETUP - FRONT CONTROL PANEL QUICK SETUP SETTINGS NTRL IOC1 FUNCTION Range: Disabled, Trip, Latched Alarm, Alarm Default: Disabled ↘ NTRL IOC1 PICKUP Range: 0.05 to 20.00 x CT Default: 1.00 x CT The settings changed using the Quick Setup menu, are available for review and NOTE: modification by navigating through S2 SYSTEM SETUP and S3 PROTECTION >...
  • Page 94 QUICK SETUP SETTINGS CHAPTER 5: QUICK SETUP - FRONT CONTROL PANEL 5–6 350 FEEDER PROTECTION SYSTEM – INSTRUCTION MANUAL Courtesy of NationalSwitchgear.com...

  • Page 95: Setpoints Setpoints Main Menu

    Digital Energy Multilin 350 Feeder Protection System Chapter 6: Setpoints Setpoints 6.1 Setpoints Main Menu The 350 has a considerable number of programmable setpoints, all of which make the relay extremely flexible. These setpoints have been grouped into a variety of pages and subpages as shown below.

  • Page 96: Setpoint Entry Methods

    SETPOINTS MAIN MENU CHAPTER 6: SETPOINTS S3 SETPOINT GROUP 1 SETPOINTS PHASE TOC S1 RELAY SETUP S1 RELAY SETUP PHASE IOC1 S2 SYSTEM SETUP CLOCK PHASE IOC2 S3 PROTECTION ACCESS PASSWORDS ▼ ▼ COMMUNICATIONS [SENS] GROUND TOC ▼ S4 CONTROLS [SENS] GROUND IOC1 S5 INPUTS/OUTPUTS EVENT RECORDER...

  • Page 97: Common Setpoints

    Any of these methods can be used to enter the same information. A computer, however, makes entry much easier. Files can be stored and downloaded for fast, error free entry when a computer is used. To facilitate this process, the GE EnerVista CD with the EnerVista SR3 Setup software is supplied with the relay.

  • Page 98: Logic Diagrams

    SETPOINTS MAIN MENU CHAPTER 6: SETPOINTS 6.1.3 Logic diagrams The logic diagrams provide a complete comprehensive understanding of the operation of each feature. These sequential logic diagrams illustrate how each setpoint, input parameter, and internal logic is used in the feature to obtain an output. In addition to these logic diagrams, written descriptions are provided in the setpoints chapter which includes each feature.

  • Page 99: S1 Relay Setup

    CHAPTER 6: SETPOINTS S1 RELAY SETUP 6.2 S1 Relay setup S1 RELAY SETUP CLOCK S1 CLOCK ACCESS PASSWORDS DATE (MM/DD/YYYY) ▼ COMMUNICATIONS ▼ TIME (HH:MM:SS) EVENT RECORDER DLS ENABLE S1 EVENT RECORDER TRANSIENT RECDR DLS START MONTH PICKUP EVENTS FRONT PANEL DLS START WEEK ▼...
  • Page 100 S1 RELAY SETUP CHAPTER 6: SETPOINTS PATH: SETPOINTS > S1 RELAY SETUP > CLOCK DATE: (MM/DD/YYYY) Range: Month: Jan, Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec Day: 1 to 31 Year: 2009 to 2099 Default: Jan 15 2009 This setting sets the date in the specified format.

  • Page 101: Password Security

    CHAPTER 6: SETPOINTS S1 RELAY SETUP Set the IRIG-B to “Enabled” if the IRIG-B device is connected to the relay IRIG-B terminals. The relay will display the message “IRIG-B failure” in the case of either no IRIG-B signal from the connected IRIG-B device, or when the signal cannot be decoded.

  • Page 102: Access Passwords

    S1 RELAY SETUP CHAPTER 6: SETPOINTS SETPOINT LEVEL • Changing settings under QUICK SETUP menu • Changing settings under the SETPOINTS menu except the features requiring control access listed below • Changing any setting under MAINTENANCE such as trip and close coil monitoring and breaker maintenance settings, except the features requiring control access listed below •...
  • Page 103 CHAPTER 6: SETPOINTS S1 RELAY SETUP The following steps describe how to change the Local Setpoints Password from the keypad. Similar steps are followed to change the Local Control Password. ENTER OLD PASSWORD The user is prompted to enter the current Local Setpoints Password. User the value up/ down keys to select characters, and use the message left/right keys to move the cursor.

  • Page 104: Communications

    S1 RELAY SETUP CHAPTER 6: SETPOINTS 6.2.3 Communications S1 COMMUNICATIONS RS485 S1 RS485 MODBUS PROTOCOL RS485 BAUD RATE ▼ IEC 60870-5-103 ▼ RS485 COMM PARITY IEC 60870-5-104* REAR 485 PROTOCOL DNP PROTOCOL 61850** S1 MODBUS PROTOCOL MODBUS SLAVE ADR * Available with comms Order Code 1 ▼...

  • Page 105: Modbus

    CHAPTER 6: SETPOINTS S1 RELAY SETUP Figure 6-2: Serial port configuration settings The following settings are available to configure the RS485 port. BAUD RATE Range: 9600, 19200, 38400, 57600, 115200 Default: 115200 This setting specifies the baud rate (bits per second) for the RS485 port. PARITY Range: None, Odd, Even Default: None...

  • Page 106: Iec 60870-5-103 Serial Communication

    S1 RELAY SETUP CHAPTER 6: SETPOINTS Please refer to the 350 Communications Guide for details on how to set up the Modbus communications protocol. 6.2.3.3 IEC 60870-5-103 serial communication S1 60870-5-103 GENERAL S1 103 GENERAL BINARY INPUTS SLAVE ADDRESS ▼ MEASURANDS ▼...

  • Page 107: Iec60870-5-104 Protocol

    CHAPTER 6: SETPOINTS S1 RELAY SETUP 6.2.3.4 IEC60870-5-104 protocol S1 60870-5-104 GENERAL S1 104 GENERAL CLIENT ADDRESS FUNCTION ▼ POINT LIST TCP PORT 104 BINARY INPUTS SLAVE ADDRESS POINT 0 CYCLIC DATA PERIOD ▼ TCP CONN TIMEOUT POINT 1 POINT 63 S1 104 CLIENT ADDRESS CLIENT ADDRESS 1 ▼...

  • Page 108: Dnp Communication

    S1 RELAY SETUP CHAPTER 6: SETPOINTS 6.2.3.5 DNP communication The menu structure for the DNP protocol is shown below. S1 DNP DNP GENERAL S1 DNP GENERAL DNP UNSOL RESPONSE* DNP ADDRESS ▼ DEFAULT VARIATION DNP CLIENT ADDRESS* TME SYNC IIN PER. DNP POINTS LIST DNP MSG FRAG SIZE * Ethernet only...

  • Page 109: Event Recorder

    CHAPTER 6: SETPOINTS S1 RELAY SETUP • the mapping of analogue values to data points in data sets in either the transmit or receive direction • a file system to maintain SCL, ICD or CID files, for IEC61850 GOOSE. As such the implementation stores GOOSE configuration using MODBUS set points.

  • Page 110: Transient Recorder

    S1 RELAY SETUP CHAPTER 6: SETPOINTS DROPOUT EVENTS Range: Disabled, Enabled Default: Disabled When set to “Enabled” the event recorder records the dropout state of a protection element. TRIP EVENTS Range: Disabled, Enabled Default: Enabled The trip events include all programmed relay elements set to trip the breaker. The text “TRIP”...
  • Page 111 CHAPTER 6: SETPOINTS S1 RELAY SETUP The following path is available using the keypad. For instructions on how to use the keypad, please refer to Section 3.1.2.1 - Working with the Keypad. PATH: SETPOINTS > S1 RELAY SETUP > TRANSIENT RECDR BUFFER SETUP Range: 1 x 192, 3 x 64, 6 x 32 Default: 3 x 64...

  • Page 112: Front Panel

    S1 RELAY SETUP CHAPTER 6: SETPOINTS 6.2.6 Front panel The user can send a message to the display, that will override any normal message by sending text through Modbus. Refer to the 350 Feeder Protection System Communications Guide for register details. PATH: SETPOINTS >...

  • Page 113: S2 System Setup

    CHAPTER 6: SETPOINTS S2 SYSTEM SETUP 6.3 S2 System Setup S2 SYSTEM SETUP CURRENT SENSING S2 CURRENT SENSING POWER SYSTEM PHASE CT PRIMARY ▼ ▼ BREAKER SETUP [SENS] GROUND CT PRIMARY USER CURVE FLEXCURVE A FLEXCURVE B S2 POWER SYSTEM NOMINAL FREQUENCY ▼...

  • Page 114: Power System

    S2 SYSTEM SETUP CHAPTER 6: SETPOINTS GROUND [SENS GND] CT PRIMARY Range: [1 A to 600 A] 1 A to 6000 A Default: 50 A For the above configuration, the ground CT primary rating must be entered. To detect low level ground fault currents, the sensitive ground input may be used. In this case, the sensitive ground CT primary rating must be entered.

  • Page 115: User Curve

    CHAPTER 6: SETPOINTS S2 SYSTEM SETUP The breaker status when disconnected from the main power circuit, such by drawout breaker racking mechanism, or isolated by the associated disconnect switches on a fixed circuit breaker, is provided by monitoring the contact input setting for “BKR CONNECTED”.The logic for Breaker Open, and Breaker Close status is shown in the table below: Table 1: Breaker open / Breaker closed status logic...

  • Page 116: S3 Protection

    S3 PROTECTION CHAPTER 6: SETPOINTS 6.4 S3 Protection The 350 protection elements are organized in two identical setpoint groups: Setpoint Group 1 and Setpoint Group 2. Each Setpoint Group has the same protection functions, depending on the relay order code. These protection functions include: •...
  • Page 117 CHAPTER 6: SETPOINTS S3 PROTECTION S3 SETPOINT GROUP 1 SETPOINTS PHASE TOC S1 RELAY SETUP S1 RELAY SETUP PHASE IOC1 S2 SYSTEM SETUP CLOCK PHASE IOC2 S3 PROTECTION ACCESS PASSWORDS ▼ ▼ COMMUNICATIONS ▼ [SENS] GROUND TOC S4 CONTROLS [SENS] GROUND IOC1 S5 INPUTS/OUTPUTS EVENT RECORDER [SENS]...

  • Page 118: Current Elements

    S3 PROTECTION CHAPTER 6: SETPOINTS 6.4.1 Current elements S3 SETPOINT GROUP 1 PHASE TOC S3 PHASE TOC PHASE IOC1 PH TOC FUNCTION PHASE IOC2 ▼ ▼ PH TOC PKP GROUND TOC S3 GROUND TOC PH TOC CURVE GROUND IOC1 GND TOC FUNCTION PH TOC TDM ▼...

  • Page 119: Toc Curves

    I / Ipu > 1. Select the appropriate curve shape and multiplier, thus matching the appropriate curve with the protection requirements. The available curves are shown in the table below. ANSI GE TYPE IAC OTHER Extremely Inverse Extremely Inverse...
  • Page 120 S3 PROTECTION CHAPTER 6: SETPOINTS where: T = reset time in seconds; E = energy capacity reached (per unit); M = curve RESET multiplier; CR = characteristic constant (5 for ANSI, IAC, Definite Time, and FlexCurves™; 8 for IEC) TOC CURVE CHARACTERISTICS ANSI Curves The ANSI time overcurrent curve shapes conform to industry standards and the ANSI C37.90 curve classifications for extremely, very, normally, and moderately inverse.
  • Page 121 CHAPTER 6: SETPOINTS S3 PROTECTION Multiplier (TDM) Current (I/Ipickup) 10.0 ANSI Moderately Inverse 0.675 0.379 0.239 0.191 0.166 0.151 0.141 0.133 0.128 0.123 1.351 0.757 0.478 0.382 0.332 0.302 0.281 0.267 0.255 0.247 2.702 1.515 0.955 0.764 0.665 0.604 0.563 0.533 0.511 0.493...
  • Page 122 The curves for the General Electric type IAC relay family are derived from the formulae: where: T = trip time (seconds), M = multiplier setpoint, I = input current, I = pickup current setpoint, A to E = constants. Table 7: GE Type IAC Inverse Curve Constants IAC Curve Shape IAC Extreme Inverse 0.0040 0.6379...
  • Page 123 CHAPTER 6: SETPOINTS S3 PROTECTION Multiplier (TDM) 10.0 17.407 7.872 3.225 2.061 1.598 1.359 1.215 1.117 1.046 0.992 23.209 10.497 4.299 2.747 2.131 1.813 1.620 1.490 1.395 1.323 10.0 29.012 13.121 5.374 3.434 2.663 2.266 2.025 1.862 1.744 1.654 IAC Inverse 0.578 0.375 0.266...
  • Page 124 S3 PROTECTION CHAPTER 6: SETPOINTS Figure 6-5: USER curve configuration settings Flexcurves Prospective FlexCurves™ can be configured from a selection of standard curves to provide the best approximate fit, then specific data points can be edited afterwards. Click the Initialize button to populate the pickup values with the points from the curve specified by the "Select Curve"...
  • Page 125 CHAPTER 6: SETPOINTS S3 PROTECTION Figure 6-6: Flexcurve™ configuration settings The following settings are available for each custom Flexcurve™. Select Curve Range: ANSI Moderately Inverse, ANSI Very Inverse, ANSI Extremely Inverse, IEEE Normally Inverse, IEC Curve A, IEC Curve B, IEC Curve C, IEC Short Inverse, IAC Extreme Inv, IAC Very Inverse, IAC Inverse, IAC Short Inverse, User Curve, FlexCurve B (Note: For FlexCurve A, you can select FlexCurve B as the setpoint, and vice versa for FlexCurve B.) Default: Extremely Inverse...

  • Page 126: Phase Timed Overcurrent Protection

    S3 PROTECTION CHAPTER 6: SETPOINTS Initialization Used after specifying a curve to use as a base for a custom FlexCurve™ (see Select Curve above). When the Initialize FlexCurve button is clicked, the pickup settings will be populated with values specified by the curve selected in this setting. 1.03 ×...
  • Page 127 CHAPTER 6: SETPOINTS S3 PROTECTION PH TOC CURVE Range: ANSI Extremely/Very/Moderately/Normally Inverse, Definite Time, IEC Curve A/B/C and Short Inverse, IAC Extremely/Very/Inverse/Short, User Curve, FlexCurve A, FlexCurve B Default: Extremely Inverse This setting sets the shape of the selected TOC inverse curve. If none of the standard curve shapes is appropriate, a custom User curve, or FlexCurve can be created.
  • Page 128 S3 PROTECTION CHAPTER 6: SETPOINTS Figure 6-7: Phase Time Overcurrent Protection logic diagram 6–34 350 FEEDER PROTECTION SYSTEM – INSTRUCTION MANUAL Courtesy of NationalSwitchgear.com...

  • Page 129: Phase Instantaneous Overcurrent Protection

    CHAPTER 6: SETPOINTS S3 PROTECTION 6.4.1.3 Phase instantaneous overcurrent protection The 350 relay has two identical phase instantaneous overcurrent protection types per Setpoint Group: Phase IOC1, and Phase IOC2. Each consists of three separate instantaneous overcurrent elements; one per phase, with identical settings. The following path is available using the keypad.
  • Page 130 S3 PROTECTION CHAPTER 6: SETPOINTS Figure 6-8: Phase Instantaneous Overcurrent Protection logic diagram 6–36 350 FEEDER PROTECTION SYSTEM – INSTRUCTION MANUAL Courtesy of NationalSwitchgear.com...

  • Page 131: Ground/Sensitive Ground Timed Overcurrent Protection

    CHAPTER 6: SETPOINTS S3 PROTECTION 6.4.1.4 Ground/Sensitive Ground timed overcurrent protection The relay has one Ground Time Overcurrent protection per setpoint group. The settings of this function are applied to the ground input current to produce trip or pickup flags. The Ground TOC pickup flag is asserted, when the ground current is above the PKP value.
  • Page 132 S3 PROTECTION CHAPTER 6: SETPOINTS GND TOC TDM Range: 0.50 to 20.00 in steps of 0.01 Default: 1.0 This setting provides selection for Time Dial Multiplier by which the times from the inverse curve are modified. For example if an ANSI Extremely Inverse curve is selected with TDM = 2, and the fault current was 5 times bigger than the PKP level, the operation of the element will not occur before an elapsed time from pickup, of 495 ms.
  • Page 133 CHAPTER 6: SETPOINTS S3 PROTECTION Figure 6-9: Ground/Sensitive Ground Timed Overcurrent Protection logic diagram 350 FEEDER PROTECTION SYSTEM – INSTRUCTION MANUAL 6–39 Courtesy of NationalSwitchgear.com...

  • Page 134: Ground/Sensitive Ground Instantaneous Overcurrent Protection

    S3 PROTECTION CHAPTER 6: SETPOINTS 6.4.1.5 Ground/Sensitive Ground instantaneous overcurrent protection The relay has one Ground/Sensitive Ground Instantaneous Overcurrent protection element per setpoint group. The settings of these functions are applied to the gound/sensitive ground current for pickup and trip flags. The Ground IOC pickup flag is asserted, when the ground current is above the PKP value.
  • Page 135 CHAPTER 6: SETPOINTS S3 PROTECTION BLOCK 1/2/3 Range: Off, Contact Input 1 to 8, Virtual Input 1 to 32, Remote Input 1 to 32, Logic Element 1 to 8 Default: Off Three blocking inputs are provided in the Ground IOC menu. When any of the selected blocking inputs - Contact input, Virtual Input, Remote Input, or Logic Element - turns on, the ground IOC function is blocked.
  • Page 136 S3 PROTECTION CHAPTER 6: SETPOINTS Figure 6-10: Ground/Sensitive Ground Instantaneous Overcurrent Protection logic diagram 6–42 350 FEEDER PROTECTION SYSTEM – INSTRUCTION MANUAL Courtesy of NationalSwitchgear.com...

  • Page 137: Neutral Timed Overcurrent Protection

    CHAPTER 6: SETPOINTS S3 PROTECTION 6.4.1.6 Neutral timed overcurrent protection The relay has one Neutral Time Overcurrent protection element per setpoint group. The settings of this function are applied to the calculated neutral current to produce pickup and trip flags. The Neutral TOC pickup flag is asserted, when the neutral current is above the PKP value.
  • Page 138 S3 PROTECTION CHAPTER 6: SETPOINTS NTRL TOC RESET Range: Instantaneous, Linear Default: Instantaneous The “Instantaneous” reset method is intended for applications with other relays, such as most static relays, which set the energy capacity directly to zero when the current falls below the reset threshold.
  • Page 139 CHAPTER 6: SETPOINTS S3 PROTECTION Figure 6-11: Neutral Timed Overcurrent Protection logic diagram 350 FEEDER PROTECTION SYSTEM – INSTRUCTION MANUAL 6–45 Courtesy of NationalSwitchgear.com...

  • Page 140: Neutral Instantaneous Overcurrent Protection

    S3 PROTECTION CHAPTER 6: SETPOINTS 6.4.1.7 Neutral instantaneous overcurrent protection The relay has two Instantaneous Overcurrent protection elements per setpoint group. The settings of this function are applied to the calculated neutral current for pickup and trip flags. The Neutral IOC pickup flag is asserted, when the neutral current is above the PKP value.
  • Page 141 CHAPTER 6: SETPOINTS S3 PROTECTION BLOCK 1/2/3 Range: Off, Contact Input 1 to 8, Virtual Input 1 to 32, Remote Input 1 to 32, Logic Element 1 to 8 Default: Off Three blocking inputs are provided in the Neutral IOC menu. One blocking input going “high”...
  • Page 142 S3 PROTECTION CHAPTER 6: SETPOINTS Figure 6-12: Neutral Instantaneous Overcurrent Protection logic diagram 6–48 350 FEEDER PROTECTION SYSTEM – INSTRUCTION MANUAL Courtesy of NationalSwitchgear.com...

  • Page 143: Cable Thermal Model

    CHAPTER 6: SETPOINTS S3 PROTECTION 6.4.2 Cable Thermal Model The thermal overload protection (Thermal Model) can be applied to prevent damage to the protected cables, dry transformers, capacitor banks, or even overhead lines. Loads exceeding the load ratings of the protected equipment can, over time, degrade the insulation, and may, in return, lead to short circuit conditions.
  • Page 144 S3 PROTECTION CHAPTER 6: SETPOINTS PATH: SETPOINTS > S3 PROTECTION > SETPOINT GROUP 1(2) > THERMAL MODEL THERMAL MDL FUNC Range: Disabled, Latched Alarm, Alarm, Trip Default: Disabled The thermal capacity will be displayed on the relay even if the Thermal Model Function is set to “Disabled.
  • Page 145 CHAPTER 6: SETPOINTS S3 PROTECTION BLOCK 1/2/3 Range: Off, Contact Input 1 to 8, Virtual Input 1 to 32, Remote Input 1 to 32, Logic Element 1 to 8 Default: Off Three blocking inputs are provided in the menu. One blocking input “high” is enough to block the function.
  • Page 146 S3 PROTECTION CHAPTER 6: SETPOINTS Figure 6-13: Thermal Model Protection logic diagram 6–52 350 FEEDER PROTECTION SYSTEM – INSTRUCTION MANUAL Courtesy of NationalSwitchgear.com...

  • Page 147: S4 Control

    CHAPTER 6: SETPOINTS S4 CONTROL 6.5 S4 Control S4 CONTROLS S4 CHANGE SETP GROUP CHANGE SETP GROUP SET GROUP 2 ACTIVE VIRTUAL INPUTS ▼ LOGIC ELEMENTS ▼ BLK GROUP CHANGE BREAKER CONTROL COLD LOAD PICKUP S4 VIRTUAL INPUTS BREAKER FAIL VIRTUAL INPUT 1 ▼...

  • Page 148: Change Setpoint Group

    S4 CONTROL CHAPTER 6: SETPOINTS 6.5.1 Change setpoint group The 350 relay has two identical setpoint groups- Group 1 and Group 2 for all protection elements. Switching between these two groups is available automatically by assigning an input (contact, virtual, remote, logic element), or via communications. Group 1 is the default setpoint group.
  • Page 149 CHAPTER 6: SETPOINTS S4 CONTROL Figure 6-14: Switching Setpoint Groups logic diagram 350 FEEDER PROTECTION SYSTEM – INSTRUCTION MANUAL 6–55 Courtesy of NationalSwitchgear.com...

  • Page 150: Virtual Inputs

    S4 CONTROL CHAPTER 6: SETPOINTS 6.5.2 Virtual inputs There are 32 virtual inputs that can be individually programmed to respond to input commands entered via the relay keypad, or by using communication protocols. PATH: SETPOINTS > S4 CONTROLS > VIRTUAL INPUTS VIRTUAL INPUT 1 Range: Off, On Default: Off...

  • Page 151: Logic Elements

    CHAPTER 6: SETPOINTS S4 CONTROL Figure 6-15: Virtual Inputs scheme logic 6.5.3 Logic elements The 350 relay has eight Logic Elements available for the user to build simple logic using the state of any programmed contact, virtual or remote input, or an output from another logic element.
  • Page 152 S4 CONTROL CHAPTER 6: SETPOINTS Referring to the Logic Element logic diagram above, the Logic Element can be set to one of the four functions: Control, Alarm, Latched Alarm or Trip. When Alarm, or Latched Alarm is selected, the output relay #1 (Trip) is not triggered when the logic element operates. The Trip output relay will be triggered when Trip is selected as a function, and the Logic element operates.
  • Page 153 CHAPTER 6: SETPOINTS S4 CONTROL BLOCK 1, 2, 3 Range: Off, Any input from the list of inputs Default: Off Each of the three blocks is configurable, assigning an input selected from a list of inputs. The list of inputs consists of all contact inputs, virtual and remote inputs, output flags from protection, and control elements and inputs from all seven other logic inputs.
  • Page 154 S4 CONTROL CHAPTER 6: SETPOINTS Figure 6-16: Logic Element logic diagram 6–60 350 FEEDER PROTECTION SYSTEM – INSTRUCTION MANUAL Courtesy of NationalSwitchgear.com...
  • Page 155 CHAPTER 6: SETPOINTS S4 CONTROL Table 9: List of logic inputs Input Type Input Name Contact Inputs BKR 52a input (CI1) BKR 52b input (CI2) Contact Input 3 Contact Input 4 Contact Input 5 Contact Input 6 Contact Input 7 Contact Input 8 Virtual Inputs Virtual Input 1...
  • Page 156 S4 CONTROL CHAPTER 6: SETPOINTS Input Type Input Name Virtual Input 28 Virtual Input 29 Virtual Input 30 Virtual Input 31 Virtual Input 32 Remote Inputs Remote Input 1 Remote Input 2 Remote Input 3 Remote Input 4 Remote Input 5 Remote Input 6 Remote Input 7 Remote Input 8...

  • Page 157: Breaker Control

    CHAPTER 6: SETPOINTS S4 CONTROL 6.5.4 Breaker control The Breaker Control menu is designed to trip and close the breaker from the relay either remotely (LOCAL MODE setting set to "OFF," or the selected contact input deselected) or locally (the input from the LOCAL MODE setpoint asserted). While in LOCAL MODE, the REMOTE OPEN and CLOSE setpoints are not active.

  • Page 158: Cold Load Pickup

    S4 CONTROL CHAPTER 6: SETPOINTS Local Mode is set if the input for the LOCAL MODE setpoint is asserted. In this mode, the REMOTE OPEN and REMOTE CLOSE setpoints are deactivated, regardless of the status of their selected inputs. Breaker Open and Breaker Close commands from the KEYPAD BKR OPEN and KEYPAD BKR CLOSE setpoints will be active, if the breaker operation is set to Local Mode (i.e.
  • Page 159 CHAPTER 6: SETPOINTS S4 CONTROL CLP BLOCKING TIME Range: 1 to 1000 sec in steps of 1 sec Default: 5 s This setting sets the time of blocking for the selected instantaneous overcurrent elements, and the time of raised pickup level of the time overcurrent elements. This timer starts when currents bigger than 10% of CT nominal are detected.
  • Page 160 S4 CONTROL CHAPTER 6: SETPOINTS Figure 6-18: Cold Load Pickup logic diagram 6–66 350 FEEDER PROTECTION SYSTEM – INSTRUCTION MANUAL Courtesy of NationalSwitchgear.com...

  • Page 161: Breaker Failure

    CHAPTER 6: SETPOINTS S4 CONTROL 6.5.6 Breaker failure The Breaker Failure function monitors the phase currents, after a trip command from the protection elements is initiated. If any phase current is above the set current level after the BF DELAY time expires, a breaker failure will be declared, and will operate the selected output relays.
  • Page 162 S4 CONTROL CHAPTER 6: SETPOINTS Figure 6-19: Breaker Failure logic diagram 6–68 350 FEEDER PROTECTION SYSTEM – INSTRUCTION MANUAL Courtesy of NationalSwitchgear.com...

  • Page 163: Autorecloser

    CHAPTER 6: SETPOINTS S4 CONTROL 6.5.7 Autorecloser The automatic recloser is intended for use on single three-pole tripping breaker applications. Up to four reclosing “shots” can be programmed with independent set of protection elements for initiation, and individual dead time prior to each subsequent shot. A typical example for selection of individual set of overcurrent protection elements for initiation is the selection of instantaneous overcurrent protections for the first AR initiation, and selection of time overcurrent protections after the first reclose.
  • Page 164 S4 CONTROL CHAPTER 6: SETPOINTS BLOCK AR Range: Off, Contact Input1 to 8, Virtual Input1 to 32, Remote Input1 to 32, Logic Elements1 to 8 Default: Off This setting provides selection for contact input, virtual input, remote input, or logic element to block off the AR scheme.
  • Page 165 CHAPTER 6: SETPOINTS S4 CONTROL AR N/READY - RELAY 3 to 6 Range: Do not operate, Operate Default: Do Not Operate Any or all of the output relays can be selected to operate upon autoreclose status detected as “AR LOCKOUT”. SELECT SETP GROUP Range: Active group, SP Group 1 Active, SP Group 2 Active Default: SP Group 1 Active...
  • Page 166 S4 CONTROL CHAPTER 6: SETPOINTS Figure 6-20: Autoreclose logic diagram 6–72 350 FEEDER PROTECTION SYSTEM – INSTRUCTION MANUAL Courtesy of NationalSwitchgear.com...
  • Page 167 CHAPTER 6: SETPOINTS S4 CONTROL The Automatic Reclosure function is designed to perform up to four breaker autoreclosings, with a configurable dead time before each reclosing shot. Upon AR function enabled, and breaker status “closed”, the AR is set into “AR Ready” state. If an intermittent feeder fault occurs such as overhead conductor touching tree branch, one or more of the overcurrent protection elements enabled under AR initiate menu will operate and issue a breaker trip command.

  • Page 168: S5 Inputs/Outputs

    S5 INPUTS/OUTPUTS CHAPTER 6: SETPOINTS 6.6 S5 Inputs/Outputs S5 INPUTS/OUTPUTS CONTACT INPUTS S5 CONTACT INPUTS OUTPUT RELAYS SELECT DC VOLTAGE ▼ VIRTUAL INPUTS S5 52a BKR INPUT 1 52a BKR INPUT 1 DEBOUNCE TIME BKR INPUT 2 CONTACT INPUT 3 CONTACT INPUT 8 S5 CONTACT INPUT 8 DEBOUNCE TIME...

  • Page 169: Output Relays

    CHAPTER 6: SETPOINTS S5 INPUTS/OUTPUTS SELECT DC VOLTAGE Range: 17 V, 33 V, 84 V, 166 V Default: 84 V 52a BKR INPUT 1 Range: Select alpha-numeric name Default: 52a (CI#1) 52b BKR INPUT 2 Range: Select alpha-numeric name Default: 52b (CI#2) CONTACT INPUT X [3 to 8] Range: Select alpha-numeric name Default: Input X...

  • Page 170: Output Relay 1 "Trip

    S5 INPUTS/OUTPUTS CHAPTER 6: SETPOINTS 52a Contact 52b Contact Relay Operation Configured Configured Trip Relay remains operational until 52b indicates an open breaker. Close Relay remains operational until 52a indicates a closed breaker. Trip Relay remains operational until 52a indicates an open breaker.
  • Page 171 CHAPTER 6: SETPOINTS S5 INPUTS/OUTPUTS Figure 6-21: Relay 1 "TRIP" logic diagram 350 FEEDER PROTECTION SYSTEM – INSTRUCTION MANUAL 6–77 Courtesy of NationalSwitchgear.com...

  • Page 172: Output Relay 2 "Close

    S5 INPUTS/OUTPUTS CHAPTER 6: SETPOINTS 6.6.2.2 Output Relay 2 "Close" PATH: SETPOINTS > S5 INPUTS/OUTPUTS > OUTPUT RELAYS > RELAY 2 CLOSE SEAL IN TIME Range: 0.00 to 9.99 s in steps of 0.01 Default: 0.04 s This setting defines the time to be added to the reset time of the Relay 2 Close output, thus extending its pulse width.
  • Page 173 CHAPTER 6: SETPOINTS S5 INPUTS/OUTPUTS Figure 6-22: Relay 2 "CLOSE" logic diagram 350 FEEDER PROTECTION SYSTEM – INSTRUCTION MANUAL 6–79 Courtesy of NationalSwitchgear.com...

  • Page 174: Auxiliary Output Relays 3 To 6

    S5 INPUTS/OUTPUTS CHAPTER 6: SETPOINTS 6.6.2.3 Auxiliary Output Relays 3 to 6 The 350 relay is equipped with four auxiliary output relays numbered from 3 to 6. All these relays are available for selection for operation of protection, control, or maintenance features.

  • Page 175: Critical Failure Relay #7

    CHAPTER 6: SETPOINTS S5 INPUTS/OUTPUTS 6.6.2.4 Critical Failure Relay #7 The 350 relay is also equipped with one output relay (# 7 - “Critical Failure Relay”) for fail- safe indication. There are no user-programmable setpoints associated with this output relay. The logic for this relay is shown below. The Critical Failure Relay (Output Relay 7) is a form C contact (refer to the Typical Wiring Diagram) with one NO and one NC contacts (no control power).
  • Page 176 S5 INPUTS/OUTPUTS CHAPTER 6: SETPOINTS Figure 6-24: Output relay 7: Critical Failure Relay 6–82 350 FEEDER PROTECTION SYSTEM – INSTRUCTION MANUAL Courtesy of NationalSwitchgear.com...

  • Page 177: Virtual Inputs

    CHAPTER 6: SETPOINTS S5 INPUTS/OUTPUTS 6.6.3 Virtual inputs There are 32 virtual inputs that can be individually programmed to respond to input commands entered via the relay keypad, or by using communication protocols. The following path is available using the keypad. For instructions on how to use the keypad, please refer to Section 3.1.2.1 - Working with the Keypad.

  • Page 178: Remote Inputs

    S5 INPUTS/OUTPUTS CHAPTER 6: SETPOINTS Figure 6-25: Virtual Inputs scheme logic 6.6.4 Remote inputs Remote Inputs are available for programming under the EnerVista SR3 Setup software. 6–84 350 FEEDER PROTECTION SYSTEM – INSTRUCTION MANUAL Courtesy of NationalSwitchgear.com...

  • Page 179: Maintenance

    Digital Energy Multilin 350 Feeder Protection System Chapter 7: Maintenance Maintenance Information about the relay and the breaker can be obtained through the features included in the Maintenance page. MAINTENANCE M3 TRIP COIL M1 RELAY INFO M1 RELAY INFO ▼ M3 BKR MAINTENANCE RELAY NAME TRIP COIL DELAY...
  • Page 180 M1 RELAY INFORMATION CHAPTER 7: MAINTENANCE 7.1 M1 Relay information PATH: MAINTENANCE > M1 RELAY INFO RELAY NAME Range: alpha-numeric name of up to 18 characters Default: Feeder Name ORDER CODE 350-EP1G1HSECNSNDN This screen shows the relay Order Code. FIRMWARE REVISION 1.10 This screen shows the relay Firmware Revision.

  • Page 181: M3 Breaker Maintenance

    CHAPTER 7: MAINTENANCE M3 BREAKER MAINTENANCE 7.2 M3 Breaker maintenance 7.2.1 Trip coil The Trip coil monitoring is performed by a built-in voltage monitor on the Form A output relay: #1 Trip. The voltage monitor is connected across the Form A contact, and effectively the relay detects healthy current through the circuit.

  • Page 182: Trip Coil

    M3 BREAKER MAINTENANCE CHAPTER 7: MAINTENANCE Figure 7-2: Trip circuit with continuous monitoring DC + Trip - form A contacts External jumper By-pass 52a contact resistor Trip Coil 898787.cdr DC - The following path is available using the keypad. For instructions on how to use the keypad, please refer to Section 3.1.2.1 - Working with the Keypad.
  • Page 183 CHAPTER 7: MAINTENANCE M3 BREAKER MAINTENANCE Figure 7-3: Trip coil monitoring logic diagram 350 FEEDER PROTECTION SYSTEM – INSTRUCTION MANUAL 7–5 Courtesy of NationalSwitchgear.com...

  • Page 184: Close Coil

    M3 BREAKER MAINTENANCE CHAPTER 7: MAINTENANCE 7.2.2 Close coil Close coil monitoring is performed by a built-in voltage monitor on the Form A output relay: #2 Close. The voltage monitor is connected across the Form A contact, and effectively the relay detects healthy current through the circuit.
  • Page 185 CHAPTER 7: MAINTENANCE M3 BREAKER MAINTENANCE Figure 7-5: Close Coil circuit with continuous monitoring DC + Close - form A contacts External jumper By-pass 52b contact resistor Close Coil 898793.cdr DC - The following path is available using the keypad. For instructions on how to use the keypad, please refer to Section 3.1.2.1 - Working with the Keypad.
  • Page 186 M3 BREAKER MAINTENANCE CHAPTER 7: MAINTENANCE Figure 7-6: Close coil monitoring logic diagram 7–8 350 FEEDER PROTECTION SYSTEM – INSTRUCTION MANUAL Courtesy of NationalSwitchgear.com...

  • Page 187: Breaker Trip Counter

    CHAPTER 7: MAINTENANCE M3 BREAKER MAINTENANCE 7.2.3 Breaker trip counter When the total number of breaker trips detected reaches the TRIP COUNTER LIMIT setpoint, an output will occur. The following path is available using the keypad. For instructions on how to use the keypad, please refer to Section 3.1.2.1 - Working with the Keypad.
  • Page 188 M3 BREAKER MAINTENANCE CHAPTER 7: MAINTENANCE Figure 7-7: BKR Trip Counter logic diagram 7–10 350 FEEDER PROTECTION SYSTEM – INSTRUCTION MANUAL Courtesy of NationalSwitchgear.com...

  • Page 189: M4 Breaker Monitor

    CHAPTER 7: MAINTENANCE M4 BREAKER MONITOR 7.3 M4 Breaker monitor The status of the breaker trip and close coils, as well as the trip and close circuits, can be monitored under MAINTENANCE > M4 BKR MONITOR. In the case where a breaker coil or circuit fails, the relay will display the message "Unhealthy"...
  • Page 190 M4 BREAKER MONITOR CHAPTER 7: MAINTENANCE 7–12 350 FEEDER PROTECTION SYSTEM – INSTRUCTION MANUAL Courtesy of NationalSwitchgear.com...

Table of Contents