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GE Multilin 750 Quick Reference Manual

Feeder management relay
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GE Multilin
215 Anderson Avenue, Markham, Ontario
Canada L6E 1B3
Tel: (905) 294-6222 Fax: (905) 201-2098
Internet:
http://www.GEmultilin.com
750/760
Feeder Management Relay
QUICK REFERENCE GUIDE
Software Revision: 7.0x
Manual P/N: 1601-0131-A6
Manual Order Code: GEK-106477E
Copyright © 2006 GE Multilin
ISO9001:2000
GE Multilin's Quality Management
System is registered to
ISO9001:2000
QMI # 005094
UL # A3775

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Summary of Contents for GE Multilin 750

  • Page 1 750/760 Feeder Management Relay QUICK REFERENCE GUIDE Software Revision: 7.0x Manual P/N: 1601-0131-A6 Manual Order Code: GEK-106477E Copyright © 2006 GE Multilin ISO9001:2000 GE Multilin 215 Anderson Avenue, Markham, Ontario Canada L6E 1B3 GE Multilin's Quality Management System is registered to...

  • Page 3: Table Of Contents

    Table of contents TABLE OF CONTENTS OVERVIEW..............................1 Introduction................................ 1 Description................................1 Protection and control function summary ..................1 Monitoring and control function summary..................2 MECHANICAL INSTALLATION ......................2 Drawout case ..............................2 Mounting................................3 Unit withdrawal and insertion ........................4 Ethernet connection............................
  • Page 4 Table of contents ADVANCED ENERVISTA 750/760 SETUP FEATURES............. 26 Triggered events............................26 Waveform capture (trace memory)...................... 27 Data logger ..............................30 Event recorder ..............................30 Modbus user map ............................31 Viewing actual values ..........................32 APPLICATION EXAMPLE........................33 Description ............................... 33 Power system data ............................

  • Page 5: Overview

    Overview OVERVIEW Introduction This Quick Reference Guide takes you through the installation and setup of your GE Multilin 750/760 Feeder Mangement Relay and helps you get it up and running as quickly as possible. The following topics are covered: •...

  • Page 6: Monitoring And Control Function Summary

    MECHANICAL INSTALLATION Drawout case The 750/760 is packaged in the standard GE Multilin SR-series arrangement, which consists of a drawout relay and a companion case. The case provides mechanical protection for the drawout portion and is used to make permanent electrical connections to external equipment.

  • Page 7: Mounting

    Mechanical installation Mounting The 750/760 can be mounted alone or adjacent to another SR-series relay on a standard 19-inch rack panel. The dimensions of the panel cutout, for both conditions, are shown below. When planning the location of your panel cutout, ensure provision is made for the front door to swing open without interference to or from adjacent equipment.

  • Page 8: Unit Withdrawal And Insertion

    Mechanical installation Unit withdrawal and insertion TURN OFF CONTROL POWER BEFORE DRAWING OUT OR RE-INSERTING THE RELAY TO PREVENT MALOPERATION! CAUTION If an attempt is made to install a relay into a non-matching case, the case’s configuration pin will prevent full insertion. Applying a strong force in this instance will result in damage to the relay and case.

  • Page 9: Ethernet Connection

    Mechanical installation When the stop position is reached, the locking mechanism will release. The relay will now slide out of the case when pulled from its handle. To free the relay, it may sometimes be necessary to adjust the handle position slightly. Figure 6: Sliding the Unit out of the Case To insert the unit into the case: Ensure that the model number on the left side of the relay matches the requirements...

  • Page 10: Electrical Installation

    Electrical installation The unit may then be re-inserted by first connecting the network cable to the units' rear RJ45 connector (see step 3 of Unit withdrawal and insertion on page 4). Ensure that the network cable does not get caught inside the case while sliding in the unit.
  • Page 11 Electrical installation Figure 8: Typical wiring diagram The phase sequence is user programmable to be either ABC or ACB rotation. The voltage transformer input ratings must match the secondary ratings of the VT. The 750/ 760 relays have four channels for AC voltage inputs, each with an isolating transformer. The nominal secondary voltage must be in the 50 to 240 V range.

  • Page 12: Logic Inputs

    Accessing setpoints via the front panel Logic inputs Logic inputs are connected as indicated below. Ensure correct polarity and do not connect any logic input circuits to ground or else relay hardware may be damaged. External contacts can be connected to the relay's fourteen (14) logic inputs. As shown, these contacts can be either dry or wet.

  • Page 13: Typical Application Setup

    Typical application setup TYPICAL APPLICATION SETUP System setpoints At a minimum, the S2 SYSTEM SETUP setpoints must be entered for the system to function correctly. To safeguard against the installation of a relay whose setpoints have not been entered, the “Relay Not Ready” self-test warning is displayed. In addition, the Self-Test Warning relay will be de-energized.

  • Page 14: Logic Input Setpoints

    Typical application setup Logic input setpoints The logic input setpoints include the logic input identification, logic input asserted logic, and logic input functionality. To set logic inputs by means of the EnerVista 750/760 Setup software, select the Setpoints > Logic Inputs menu item. The setpoints are shown as sub- pages of the following tree: Protection setpoints Refer to the Application example on page 33 for details on how to set the 750/760 Feeder...

  • Page 15: Enervista 750/760 Setup Software Interface

    EnerVista 750/760 Setup software interface A similar process can be followed to enable other protection and control features. For a complete description of setpoints and their functionality, refer to Chapter 5 of the 750/760 instruction manual. ENERVISTA 750/760 SETUP SOFTWARE INTERFACE Overview The EnerVista 750/760 Setup software provides a graphical user interface (GUI) as one of two human interfaces to a 750/760 device.
  • Page 16 EnerVista 750/760 Setup software interface Figure 11: Communications using the front RS232 port Figure 12: Communications using rear RS485 port 750/760 Quick Reference Guide...

  • Page 17: Connecting Enervista 750/760 Setup To The Relay

    Install and start the latest version of the EnerVista 750/760 Setup software (available 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 18 Connecting EnerVista 750/760 Setup to the Relay Select “Serial” from the Interface drop-down list. This will display a number of interface parameters that must be entered for proper RS232 functionality. Enter the slave address and COM port values (from the S1 RELAY SETUP COMMUNICATIONS PORT SETUP...

  • Page 19: Using The Quick Connect Feature

    Install and start the latest version of the EnerVista 750/760 Setup software (available 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 20 Connecting EnerVista 750/760 Setup to the Relay example, we will use “Substation 2” as the site name. Click the OK button when complete. The new site will appear in the upper-left list. Click the Add Device button to define the new device. Enter the desired name in the Device Name field and a description (optional).

  • Page 21: Connecting To The Relay

    Connecting EnerVista 750/760 Setup to the Relay Connecting to the relay Now that the communications parameters have been properly configured, the user can easily communicate with the relay. Expand the Site list by double clicking on the site name or clicking on the «+» box to list the available devices for the given site (for example, in the “Substation 1”...

  • Page 22: Working With Setpoints And Setpoint Files

    Working with setpoints and setpoint files The Front Panel settings can now be edited, printed, or changed according to user specifications. Other setpoint and commands windows can be displayed and edited in a similar manner. Actual values windows are also available for display. These windows can be locked, arranged, and resized at will.

  • Page 23: File Support

    Working with setpoints and setpoint files 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 Accept to exit from the keypad and keep the new value. Click on Cancel to exit from the keypad and retain the old value.

  • Page 24: Using Setpoints Files

    Working with setpoints and setpoint files Using setpoints files Overview The EnerVista 750/760 Setup software interface supports three ways of handling changes to relay settings: • In off-line mode (relay disconnected) to create or edit relay settings files for later download to communicating relays.
  • Page 25 Working with setpoints and setpoint files Adding setpoints files to the environment The EnerVista 750/760 Setup software provides the capability to review and manage a large group of setpoint files. Use the following procedure to add a new or existing file to the list.
  • Page 26 Working with setpoints and setpoint files Select the file name and path to store the file, or select any displayed file name to update an existing file. All 750/760 setpoint files should have the extension ‘750’ or ‘760’ (for example, ‘feeder1.750’). Click Save and OK to complete the process.
  • Page 27 Working with setpoints and setpoint files Enter any special comments Select the desired setpoint version about the setpoint file here. from this menu. The 6.0x indicates versions 6.00, 6.01, 6.02, etc. When complete, click Convert to convert the setpoint file to the desired revision. A dialog box will request confirmation.

  • Page 28: Upgrading Relay Firmware

    To upgrade the 750/760 firmware, follow the procedures listed in this section. Upon successful completion of this procedure, the 750/760 will have new firmware installed with the original setpoints. The latest firmware files are available from the GE Multilin website at http:// www.GEmultilin.com.

  • Page 29: Saving Setpoints To A File

    Upgrading relay firmware Units with bootware versions earlier than 3.00 must be set to a baud rate of 9600 with a Slave Address of 1 before downloading new firmware. The bootware version can be checked in the A5 PRODUCT INFO REVISION CODES NOTE BOOTWARE REVISION...

  • Page 30: Advanced Enervista 750/760 Setup Features

    Advanced EnerVista 750/760 Setup features The EnerVista 750/760 Setup software now prepares the 750/760 to receive the new firmware file. The 750/760 will display a message indicating that it is in Upload Mode. While the file is being loaded into the 750/760, a status box appears showing how much of the new firmware file has been transferred and how much is remaining, as well as the upgrade status.

  • Page 31: Waveform Capture (Trace Memory)

    Advanced EnerVista 750/760 Setup features • Event Recorder: The event recorder captures contextual data associated with the last 512 events, listed in chronological order from most recent to the oldest. • Oscillography: The oscillography waveform traces and digital states provide a visual display of power system and relay operation data captured during specific triggered events.
  • Page 32 Advanced EnerVista 750/760 Setup features To view the captured waveforms, click the Launch Viewer button. A detailed Waveform Capture window will appear as shown below: CURSOR LINE POSITION TRIGGER TIME & DATE VECTOR DISPLAY SELECT Indicate the cursor line position Display the time &...
  • Page 33 Advanced EnerVista 750/760 Setup features From the window main menu bar, press the Preference button to open the Comtrade Setup page to change the graph attributes. 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.

  • Page 34: Data Logger

    Advanced EnerVista 750/760 Setup features To view a vector graph of the quantities contained in the waveform capture, press the Vector display button (see Figure 15: Waveform Capture Window Attributes on page 28) to display the following window: 10. Use the graph attribute utility described in step 7 to change the vector colors. Data logger The data logger feature is used to sample and record up to eight actual values at an interval that is defined by the user.

  • Page 35: Modbus User Map

    Modbus user map The EnerVista 750/760 Setup software provides a means to program the 750/760 User Map (Modbus addresses 0180h to 01F7h). Refer to GE Publication GEK-106473C: 750/760 Communications Guide for additional information on the User Map. Select a connected device in EnerVista 750/760 Setup.

  • Page 36: Viewing Actual Values

    Advanced EnerVista 750/760 Setup features Select the Setpoint > User Map menu item to open the following window. This window allows the desired addresses to be written to User Map locations. The User Map values that correspond to these addresses are then displayed. Viewing actual values You can view real-time relay data such as input/output status and measured parameters.

  • Page 37: Application Example

    Application example Figure 16: Actual values display APPLICATION EXAMPLE Description The 750 and 760 relays contain many features designed to accommodate a wide range of applications. This chapter is provided to guide you, the first time user, through a real-world application.
  • Page 38 Application example – any additional intentional time delay – directionality (if applicable) • Define how many output contacts will be energized in response to a given protection function. Note that the 750/760 relay can be programmed to trip and, at the same time, to energize one, a combination, or all five auxiliary relays during the process.
  • Page 39 Application example Figure 17: Typical three-line diagram 750/760 Quick Reference Guide...
  • Page 40 Application example RS485 SERIAL NETWORK Figure 18: Typical connection diagram 750/760 Quick Reference Guide...
  • Page 41 Application example Figure 19: Typical control diagram 750/760 Quick Reference Guide...
  • Page 42 Application example Figure 20: Typical breaker control diagram 750/760 Quick Reference Guide...
  • Page 43 Application example Figure 21: Typical relay control diagram 750/760 Quick Reference Guide...

  • Page 44: Power System Data

    RTU. Please note that, similar information could be exchanged between the RTU and the relay via an RS485 or RS422 serial link using Modbus RTU protocol. Refer to GE Publication GEK-106473C: 750/760 Communications Guide for additional information.

  • Page 45: Neutral Protection Settings

    Application example Neutral protection settings Time Overcurrent 1 (function 51N1): • Curve shape = Moderately Inverse • Pickup = 120 A • Multiplier = 10 Instantaneous Overcurrent 1 (function 50N1): • Pickup = 120 A • Phases required = Any two •...

  • Page 46: S3 Logic Inputs Setpoints

    Application example (for a 138 kV system, 13.8 kV / 120 = 115 V) RATIO: “120:1” (14.4 kV VT / 120 V VT primary secondary For the case where Bus VTs are connected in Wye, the system settings are: VT CONNECTION TYPE: “Wye”...
  • Page 47 Application example The digital inputs should be re-named. Changing the default names to meaningful names is strongly recommended so they can be easily identified in the LCD and in event reports. The asserted logic must be identified. The functionality of the logic inputs must be defined. Note that a logic input can be utilized for more then one application.
  • Page 48 Application example LOCAL MODE: “Input 3” RESET: “Input 6” REMOTE OPEN: “Input 4” REMOTE CLOSE: “Input 5” If, for example, the same logic input would be needed to perform the functionality of Close and Reset, then the following should have been entered: RESET: “Input 5”...

  • Page 49: S5 Protection Setpoints

    Application example Inputs 3, 4, 5, and 6 will perform control functions. Select the Setpoints > S3 Logic Inputs > Control Functions menu item to display the following window: Change the corresponding setpoints, and then press Save. To setup an Alarm-after-Delay input, make the following changes to the S3 LOGIC INPUTS USER INPUT A setpoints page.
  • Page 50 Application example PHASE TIME OC 1 FUNCTION: “Trip” PHASE TIME OC 1 PICKUP: “1.40 x CT” (calculated as 840 A pickup / 600 A primary) PHASE TIME OC 1 CURVE: “Mod Inverse” PHASE TIME OC 1 MULTIPLIER: “20.20” PHASE TIME OC 1 RESET: “Instantaneous”...
  • Page 51 Application example Click on the “Phase Time Overcurrent 1” tab to display the following screen: Change the corresponding setpoints as indicated, and then press Save. To set the Phase Instantaneous Overcurrent 1 function: Click on the “Phase Instantaneous Overcurrent 1” tab to display the following screen: Change the corresponding setpoints as indicated, and then press Save.
  • Page 52 Application example NEUTRAL TIME OC 1 FUNCTION: “Trip” NEUTRAL TIME OC 1 PICKUP: “0.20 x CT” (from 120 A pickup / 600 A primary) NEUTRAL TIME OC 1 CURVE: “Mod Inverse” NEUTRAL TIME OC 1 MULTIPLIER: “10.00” NEUTRAL TIME OC 1 RESET: “Instantaneous”...
  • Page 53 Application example Click on the “Neutral Time Overcurrent 1” tab to display the following screen: Change the corresponding setpoints as indicated, and then press Save. To set the Neutral Instantaneous Overcurrent 1 function: Click on the “Neutral Instantaneous Overcurrent 1” tab to display the following screen: Change the corresponding setpoints as indicated, and then press Save.

  • Page 54: Other Settings

    Other settings OTHER SETTINGS Description In addition to the settings illustrated above, there will be cases in feeder applications where additional settings will be required, to monitor other system parameters such as voltage levels, generate auxiliary outputs for local indication, and to use different setpoints in order to adapt the protection to changing system conditions.

  • Page 55: Auxiliary Relays

    Other settings Using EnerVista 750/760 Setup, all the setpoints related to voltage will appear grouped in a single page with identification tabs when selected from the main window menu. From the main window, select the Setpoints > S5 Protection > Voltage menu item. The following window will appear: To set the Bus Undervoltage 1 function, click on the “Bus Undervoltage 1”...

  • Page 56: Changing Setpoint Groups

    Other settings Select the Setpoints > S4 Output Relays > 3 Auxiliary menu item. The following window will appear: Change the corresponding setpoints as indicated, then press Save. Changing setpoint groups All setpoints contained under the S5 PROTECTION setpoints page are available in a set of four groups, identified as Groups 1, 2, 3, and 4.

  • Page 57: Installation

    Installation Select the Setpoints > S3 Logic Inputs > Logic Input Setup menu item. The following window will appear: Change the corresponding setpoints as indicated, then press Save. These setpoints are only used to identify the Logic Inputs and define their asserted logic. To complete the setpoints corresponding to logic inputs, define their functionality as follows.

  • Page 58: Technical Support

    LED Indicator will now turn on and the SELF TEST WARNING: Relay Not Ready diagnostic message will disappear. TECHNICAL SUPPORT GE Multilin contact information and call center for product support is shown below: GE Multilin 215 Anderson Avenue Markham, Ontario...

This manual is also suitable for:

Multilin 760

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