GE 750 User manual

750/760 Feeder Management
Relay
Instruction Manual
Software Revision: 7.4x
Manual P/N: 1601-0120-AG
Manual Order Code: GEK-106471Q
GE Digital Energy
650 Markland Street
Markham, Ontario
Canada L6C 0M1
Tel: [phone] Fax: [phone]
Internet: http://www.gedigitalenergy.com GE Digital Energy's Quality
Management System is
registered to ISO9001:2008
QMI # 005094
*1601-0120-AG*
GE
Digital Energy

© 2013 GE Multilin Incorporated. All rights reserved.
GE Multilin 750/760 Feeder Management Relay instruction manual for revision 7.4x
750/760 Feeder Management Relay, is a registered trademark of GE Multilin Inc.
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.
Part numbers contained in this manual are subject to change without notice, and should
therefore be verified by GE Multilin before ordering.
Part number: 1601-0120-AG (November 2013)

CHAPTER 1:
750 FEEDER MANAGEMENT RELAY – INSTRUCTION MANUAL 3
Safety words and definitions
The following symbols used in this document indicate the following conditions:
Note Indicates a hazardous situation which, if not avoided, will result in death or serious
injury.
Note Indicates a hazardous situation which, if not avoided, could result in death or serious
injury.
Note Indicates a hazardous situation which, if not avoided, could result in minor or
moderate injury.
Note Indicates practices not related to personal injury.
NOTE
Indicates general information and practices, including operational information and
practices, that are not related to personal injury.

4750 FEEDER MANAGEMENT RELAY – INSTRUCTION MANUAL
CHAPTER 1:

TOC TABLE OF CONTENTS
750 FEEDER MANAGEMENT RELAY – INSTRUCTION MANUAL TOC - I
Table of Contents
1: GETTING STARTED IMPORTANT PROCEDURES .......................................................................................................... 1-1
CAUTIONS AND WARNINGS ............................................................................................... 1-1
INSPECTION CHECKLIST ...................................................................................................... 1-1
MANUAL ORGANIZATION ................................................................................................... 1-2
USING THE RELAY ............................................................................................................................ 1-3
MENU NAVIGATION ............................................................................................................. 1-3
PANEL KEYING EXAMPLE .................................................................................................... 1-6
CHANGING SETPOINTS ................................................................................................................. 1-7
INTRODUCTION ..................................................................................................................... 1-7
THE HELP KEY .................................................................................................................... 1-8
NUMERICAL SETPOINTS ...................................................................................................... 1-8
ENUMERATION SETPOINTS ................................................................................................. 1-9
OUTPUT RELAY SETPOINTS ................................................................................................ 1-13
TEXT SETPOINTS .................................................................................................................. 1-14
APPLICATION EXAMPLE ................................................................................................................. 1-15
DESCRIPTION ........................................................................................................................ 1-15
S2 SYSTEM SETPOINTS ....................................................................................................... 1-23
S3 LOGIC INPUTS SETPOINTS ............................................................................................ 1-24
S5 PROTECTION SETPOINTS .............................................................................................. 1-26
INSTALLATION ....................................................................................................................... 1-27
COMMISSIONING ............................................................................................................................. 1-28
2: INTRODUCTION OVERVIEW ........................................................................................................................................... 2-1
DESCRIPTION ........................................................................................................................ 2-1
THEORY OF OPERATION ................................................................................................................ 2-5
DESCRIPTION ........................................................................................................................ 2-5
CURRENT AND VOLTAGE WAVEFORM CAPTURE ............................................................. 2-5
FREQUENCY TRACKING ....................................................................................................... 2-5
PHASORS, TRANSIENTS, AND HARMONICS ...................................................................... 2-6
PROCESSING OF AC CURRENT INPUTS ............................................................................ 2-6
PROTECTION ELEMENTS ...................................................................................................... 2-6
LOGIC INPUTS ...................................................................................................................... 2-7
ORDERING ........................................................................................................................................... 2-9
ORDER CODES ..................................................................................................................... 2-9
EXAMPLE ORDER CODES .................................................................................................... 2-9
ACCESSORIES ....................................................................................................................... 2-10
SPECIFICATIONS ............................................................................................................................... 2-11
APPLICABILITY ...................................................................................................................... 2-11
INPUTS .................................................................................................................................. 2-11
MEASURED PARAMETERS ................................................................................................... 2-12
PROTECTION ELEMENTS ...................................................................................................... 2-14
MONITORING ELEMENTS .................................................................................................... 2-17
CONTROL ELEMENTS ........................................................................................................... 2-18
OUTPUTS ...............................................................................................................................2-20
OUTPUT RELAYS .................................................................................................................. 2-20
CPU ...................................................................................................................................... 2-20
PHYSICAL .............................................................................................................................. 2-21
TESTING ................................................................................................................................ 2-22
APPROVALS ........................................................................................................................... 2-23

TOC - II 750 FEEDER MANAGEMENT RELAY – INSTRUCTION MANUAL
TABLE OF CONTENTS TOC
3: INSTALLATION MECHANICAL INSTALLATION ...................................................................................................... 3-1
DRAWOUT CASE .................................................................................................................. 3-1
INSTALLATION ....................................................................................................................... 3-2
UNIT WITHDRAWAL AND INSERTION ................................................................................ 3-3
ETHERNET CONNECTION .................................................................................................... 3-5
REAR TERMINAL LAYOUT .................................................................................................... 3-5
ELECTRICAL INSTALLATION ......................................................................................................... 3-8
PHASE SEQUENCE AND TRANSFORMER POLARITY .......................................................... 3-9
CURRENT INPUTS ................................................................................................................. 3-9
GROUND AND SENSITIVE GROUND CT INPUTS .............................................................. 3-9
RESTRICTED EARTH FAULT INPUTS ................................................................................... 3-11
ZERO SEQUENCE CT INSTALLATION ................................................................................. 3-11
VOLTAGE INPUTS ................................................................................................................. 3-12
CONTROL POWER ................................................................................................................ 3-13
TRIP/CLOSE COIL SUPERVISION ........................................................................................ 3-14
LOGIC INPUTS ...................................................................................................................... 3-16
ANALOG INPUT .................................................................................................................... 3-16
ANALOG OUTPUTS .............................................................................................................. 3-17
SERIAL COMMUNICATIONS ................................................................................................. 3-18
RS232 COMMUNICATIONS ................................................................................................ 3-20
IRIG-B .................................................................................................................................. 3-20
4: INTERFACES FRONT PANEL INTERFACE ............................................................................................................ 4-1
DESCRIPTION ........................................................................................................................ 4-1
DISPLAY ................................................................................................................................. 4-1
LED INDICATORS .............................................................................................................................. 4-2
DESCRIPTION ........................................................................................................................ 4-2
750/760 STATUS LED INDICATORS ............................................................................... 4-3
SYSTEM STATUS LED INDICATORS ................................................................................... 4-3
OUTPUT STATUS LED INDICATORS ................................................................................... 4-5
RELAY MESSAGES ............................................................................................................................ 4-6
KEYPAD OPERATION ............................................................................................................ 4-6
DIAGNOSTIC MESSAGES ..................................................................................................... 4-7
SELF-TEST WARNINGS ....................................................................................................... 4-7
FLASH MESSAGES ................................................................................................................ 4-10
ENERVISTA 750/760 SETUP SOFTWARE INTERFACE ........................................................ 4-13
OVERVIEW ............................................................................................................................ 4-13
HARDWARE ........................................................................................................................... 4-13
INSTALLING THE ENERVISTA 750/760 SETUP SOFTWARE .......................................... 4-15
CONNECTING ENERVISTA 750/760 SETUP TO THE RELAY ............................................ 4-18
CONFIGURING SERIAL COMMUNICATIONS ....................................................................... 4-18
USING THE QUICK CONNECT FEATURE ............................................................................ 4-20
CONFIGURING ETHERNET COMMUNICATIONS ................................................................. 4-20
CONNECTING TO THE RELAY .............................................................................................. 4-22
WORKING WITH SETPOINTS AND SETPOINT FILES ........................................................... 4-24
ENGAGING ADEVICE ........................................................................................................... 4-24
ENTERING SETPOINTS ......................................................................................................... 4-24
FILE SUPPORT ...................................................................................................................... 4-25
USING SETPOINTS FILES ..................................................................................................... 4-25
UPGRADING RELAY FIRMWARE ................................................................................................. 4-31
DESCRIPTION ........................................................................................................................ 4-31
SAVING SETPOINTS TOA FILE ........................................................................................... 4-31

TOC TABLE OF CONTENTS
750 FEEDER MANAGEMENT RELAY – INSTRUCTION MANUAL TOC - III
LOADING NEW FIRMWARE ................................................................................................. 4-31
ADVANCED ENERVISTA 750/760 SETUP FEATURES ......................................................... 4-34
TRIGGERED EVENTS ............................................................................................................. 4-34
WAVEFORM CAPTURE (TRACE MEMORY) ......................................................................... 4-34
DATA LOGGER ...................................................................................................................... 4-37
EVENT RECORDER ............................................................................................................... 4-37
MODBUS USER MAP ........................................................................................................... 4-38
VIEWING ACTUAL VALUES ................................................................................................. 4-39
USING ENERVISTA VIEWPOINT WITH THE 750/760 ......................................................... 4-41
PLUG AND PLAY EXAMPLE ................................................................................................. 4-41
5: SETPOINTS OVERVIEW ........................................................................................................................................... 5-1
SETPOINTS MAIN MENU ..................................................................................................... 5-1
SETPOINT ENTRY METHODS ............................................................................................... 5-5
SETPOINT ACCESS SECURITY ............................................................................................. 5-6
COMMON SETPOINTS .......................................................................................................... 5-6
LOGIC DIAGRAMS ................................................................................................................ 5-8
S1 RELAY SETUP ............................................................................................................................... 5-9
PASSCODE ............................................................................................................................ 5-9
COMMUNICATIONS .............................................................................................................. 5-9
CLOCK ................................................................................................................................... 5-13
EVENT RECORDER ............................................................................................................... 5-14
TRACE MEMORY ................................................................................................................... 5-15
DATA LOGGER ...................................................................................................................... 5-16
FRONT PANEL ...................................................................................................................... 5-17
DEFAULT MESSAGES ........................................................................................................... 5-18
USER TEXT MESSAGES ........................................................................................................ 5-19
CLEAR DATA ......................................................................................................................... 5-20
INSTALLATION ....................................................................................................................... 5-20
MOD 008 UPGRADE .......................................................................................................... 5-21
S2 SYSTEM SETUP ............................................................................................................................ 5-22
CURRENT SENSING .............................................................................................................. 5-22
BUS VT SENSING ................................................................................................................ 5-22
LINE VT SENSING ................................................................................................................ 5-23
POWER SYSTEM ................................................................................................................... 5-23
FLEXCURVES™ .................................................................................................................... 5-24
S3 LOGIC INPUTS ............................................................................................................................. 5-26
OVERVIEW ............................................................................................................................ 5-26
LOGIC INPUTS SETUP .......................................................................................................... 5-27
BREAKER FUNCTIONS ......................................................................................................... 5-28
CONTROL FUNCTIONS ........................................................................................................ 5-30
USER INPUTS ........................................................................................................................ 5-31
BLOCK FUNCTIONS ............................................................................................................. 5-32
BLOCK OVERCURRENT ........................................................................................................ 5-34
TRANSFER FUNCTIONS ........................................................................................................ 5-35
RECLOSE (760 ONLY) ......................................................................................................... 5-36
MISCELLANEOUS .................................................................................................................. 5-36
S4 OUTPUT RELAYS ......................................................................................................................... 5-38
RELAY OPERATION ............................................................................................................... 5-38
TRIP RELAY ........................................................................................................................... 5-39
CLOSE RELAY ....................................................................................................................... 5-40
AUXILIARY RELAYS ............................................................................................................... 5-41
SELF-TEST WARNING RELAY ............................................................................................. 5-42

TOC - IV 750 FEEDER MANAGEMENT RELAY – INSTRUCTION MANUAL
TABLE OF CONTENTS TOC
S5 PROTECTION ................................................................................................................................ 5-44
OVERVIEW ............................................................................................................................ 5-44
TIME OVERCURRENT CURVE CHARACTERISTICS .............................................................. 5-45
PHASE CURRENT .................................................................................................................. 5-49
NEUTRAL CURRENT ............................................................................................................. 5-57
GROUND CURRENT ............................................................................................................. 5-63
SENSITIVE GROUND ............................................................................................................ 5-67
NEGATIVE SEQUENCE .......................................................................................................... 5-75
VOLTAGE ...............................................................................................................................5-81
FREQUENCY .......................................................................................................................... 5-86
BREAKER FAILURE ............................................................................................................... 5-89
REVERSE POWER ................................................................................................................. 5-91
S6 MONITORING ............................................................................................................................... 5-93
CURRENT LEVEL ................................................................................................................... 5-93
POWER FACTOR ................................................................................................................... 5-94
FAULT LOCATOR .................................................................................................................. 5-96
DEMAND ...............................................................................................................................5-98
ANALOG INPUT .................................................................................................................... 5-105
ANALOG OUTPUTS .............................................................................................................. 5-109
OVERFREQUENCY ................................................................................................................. 5-112
EQUIPMENT ........................................................................................................................... 5-113
PULSE OUTPUT .................................................................................................................... 5-120
S7 CONTROL ...................................................................................................................................... 5-122
SETPOINT GROUPS .............................................................................................................. 5-122
SYNCHROCHECK .................................................................................................................. 5-126
MANUAL CLOSE BLOCKING ............................................................................................... 5-128
COLD LOAD PICKUP ............................................................................................................ 5-130
UNDERVOLTAGE RESTORATION ......................................................................................... 5-132
UNDERFREQUENCY RESTORE ............................................................................................. 5-133
TRANSFER SCHEME ............................................................................................................. 5-135
AUTORECLOSE (760 ONLY) ................................................................................................ 5-155
S8 TESTING ......................................................................................................................................... 5-168
OUTPUT RELAYS .................................................................................................................. 5-168
PICKUP TEST ......................................................................................................................... 5-169
ANALOG OUTPUTS .............................................................................................................. 5-169
SIMULATION ......................................................................................................................... 5-170
FACTORY SERVICE ................................................................................................................ 5-174
6: ACTUAL VALUES OVERVIEW ........................................................................................................................................... 6-1
ACTUAL VALUES MAIN MENU ........................................................................................... 6-1
A1 STATUS ........................................................................................................................................... 6-6
VIRTUAL INPUTS ................................................................................................................... 6-6
HARDWARE INPUTS ............................................................................................................. 6-6
LAST TRIP DATA ................................................................................................................... 6-7
FAULT LOCATIONS ............................................................................................................... 6-8
CLOCK ................................................................................................................................... 6-8
AUTORECLOSE (760 ONLY) ................................................................................................ 6-8
A2 METERING ..................................................................................................................................... 6-10
METERING CONVENTIONS .................................................................................................. 6-10
CURRENT ...............................................................................................................................6-11
VOLTAGE ...............................................................................................................................6-12
FREQUENCY .......................................................................................................................... 6-13
SYNCHRONIZING VOLTAGE ................................................................................................. 6-14

TOC TABLE OF CONTENTS
750 FEEDER MANAGEMENT RELAY – INSTRUCTION MANUAL TOC - V
POWER .................................................................................................................................. 6-14
ENERGY ................................................................................................................................. 6-15
DEMAND ...............................................................................................................................6-16
ANALOG INPUT .................................................................................................................... 6-17
A3 MAINTENANCE ........................................................................................................................... 6-18
TRIP COUNTERS ................................................................................................................... 6-18
ARCING CURRENT ............................................................................................................... 6-19
A4 EVENT RECORDER ..................................................................................................................... 6-20
EVENT RECORDS .................................................................................................................. 6-20
LAST RESET DATE ................................................................................................................ 6-24
A5 PRODUCT INFO .......................................................................................................................... 6-25
TECHNICAL SUPPORT .......................................................................................................... 6-25
REVISION CODES ................................................................................................................. 6-25
CALIBRATION DATES ........................................................................................................... 6-26
7: COMMISSIONING OVERVIEW ........................................................................................................................................... 7-1
SAFETY PRECAUTIONS ......................................................................................................... 7-1
REQUIREMENTS .................................................................................................................... 7-2
CONVENTIONS ...................................................................................................................... 7-2
TEST EQUIPMENT ................................................................................................................. 7-3
INSTALLATION CHECKS ....................................................................................................... 7-4
WIRING DIAGRAMS ............................................................................................................. 7-4
INPUTS/OUTPUTS ............................................................................................................................ 7-6
LOGIC / VIRTUAL INPUTS 1 TO 14 ................................................................................... 7-6
VIRTUAL INPUTS 15 TO 20 ................................................................................................ 7-15
OUTPUT RELAYS .................................................................................................................. 7-15
METERING ........................................................................................................................................... 7-17
CURRENT METERING ........................................................................................................... 7-17
VOLTAGE METERING ........................................................................................................... 7-18
POWER METERING .............................................................................................................. 7-20
DEMAND METERING ............................................................................................................ 7-22
ANALOG INPUT METERING ................................................................................................. 7-24
PROTECTION SCHEMES ................................................................................................................. 7-26
SETPOINT GROUPS .............................................................................................................. 7-26
PHASE OVERCURRENT ........................................................................................................ 7-26
NEUTRAL OVERCURRENT .................................................................................................... 7-33
GROUND OVERCURRENT .................................................................................................... 7-37
NEGATIVE-SEQUENCE OVERCURRENT AND VOLTAGE .................................................... 7-38
VOLTAGE ...............................................................................................................................7-40
FREQUENCY .......................................................................................................................... 7-47
BREAKER FAILURE ............................................................................................................... 7-50
REVERSE POWER ................................................................................................................. 7-51
MONITORING ..................................................................................................................................... 7-53
CURRENT MONITORING ...................................................................................................... 7-53
FAULT LOCATOR .................................................................................................................. 7-53
DEMAND MONITORING ....................................................................................................... 7-55
ANALOG INPUTS .................................................................................................................. 7-56
OVERFREQUENCY MONITORING ........................................................................................ 7-57
POWER FACTOR ................................................................................................................... 7-58
VT FAILURE .......................................................................................................................... 7-58
TRIP COIL MONITOR ........................................................................................................... 7-59
CLOSE COIL MONITOR ........................................................................................................ 7-60
BREAKER OPERATION FAILURE .......................................................................................... 7-60

TOC - VI 750 FEEDER MANAGEMENT RELAY – INSTRUCTION MANUAL
TABLE OF CONTENTS TOC
ARCING CURRENT ................................................................................................................ 7-60
ANALOG OUTPUT CHANNELS ............................................................................................ 7-61
IRIG-B .................................................................................................................................. 7-61
PULSE OUTPUT .................................................................................................................... 7-61
CONTROL SCHEMES ....................................................................................................................... 7-62
SETPOINT GROUP CONTROL .............................................................................................. 7-62
SYNCHROCHECK .................................................................................................................. 7-64
MANUAL CLOSE FEATURE BLOCKING .............................................................................. 7-69
COLD LOAD PICKUP BLOCKING ........................................................................................ 7-70
UNDERVOLTAGE RESTORATION ......................................................................................... 7-72
UNDERFREQUENCY RESTORATION .................................................................................... 7-76
TRANSFER SCHEME ............................................................................................................. 7-78
AUTORECLOSE (760 ONLY) ................................................................................................ 7-86
PLACING THE RELAY IN SERVICE ............................................................................................... 7-94
DESCRIPTION ........................................................................................................................ 7-94
ON-LOAD TESTING .............................................................................................................. 7-94
DIELECTRIC STRENGTH TESTING ........................................................................................ 7-96
8: APPENDIX RELAY MODS ...................................................................................................................................... 8-1
REVERSE POWER ................................................................................................................. 8-1
CONFORMITY ..................................................................................................................................... 8-3
EU DECLARATION OF CONFORMITY ................................................................................. 8-3
REVISION HISTORY .......................................................................................................................... 8-4
RELEASE DATES ................................................................................................................... 8-4
RELEASE NOTES ................................................................................................................... 8-4
GE MULTILIN DEVICE WARRANTY ............................................................................................. 8-8
WARRANTY STATEMENT ..................................................................................................... 8-8
I: INDEX

750 FEEDER MANAGEMENT RELAY – INSTRUCTION MANUAL 1 - 1
750/760 Feeder Management
Relay
Chapter 1: Getting Started
GE
Digital Energy
Getting Started
1.1 Important Procedures
1.1.1 Cautions and Warnings
Please read this chapter to guide you through the initial setup of your new relay.
Note Before attempting to install or use the relay, it is imperative that all WARNINGS and
CAUTIONS in this manual are reviewed to help prevent personal injury, equipment
damage, and/or downtime.
Note
1.1.2 Inspection Checklist
Open the relay packaging and inspect the unit for physical damage.
View the rear nameplate and verify that the correct model has been
ordered.
Ensure that the following items are included:
• Instruction Manual
• GE EnerVista CD (includes software and relay documentation)
• Mounting screws.
For product information, instruction manual updates, and the latest software updates,
please visit the GE Multilin website at http://www.gedigitalenergy.com.
NOTE
Note If there is any noticeable physical damage, or any of the contents listed are missing,
please contact GE Multilin immediately.

1 - 2 750 FEEDER MANAGEMENT RELAY – INSTRUCTION MANUAL
IMPORTANT PROCEDURES CHAPTER 1: GETTING STARTED
1.1.3 Manual Organization
To speed things up, this introductory chapter provides a step-by-step tutorial for a simple
feeder application. Important wiring considerations and precautions discussed in Electrical
Installation on page 3–10 should be observed for reliable operation. Detailed information
regarding accuracy, output relay contact ratings, and so forth are detailed in Specifications
on page 2–11. The remainder of this manual should be read and kept for reference to
ensure maximum benefit from the 750 and 760. For further information, please consult
your local sales representative or the factory. Comments about new features or
modifications for your specific requirements are welcome and encouraged.
Setpoints and actual values are indicated as follows in the manual:
A2 METERING  DEMAND PHASE A CURRENT LAST PHASE A CURRENT DEMAND
This ‘path representation’ illustrates the location of an specific actual value or setpoint with
regards to its previous menus and sub-menus. In the example above, the LAST PHASE A
CURRENT DEMAND actual value is shown to be a item in the Phase A Current sub-menu,
which itself is an item in the Demand menu, which is an item of actual values page A2
Metering).
Sub-menu levels are entered by pressing the MESSAGE key. When inside a sub-menu,
the MESSAGE key returns to the previous sub-menu. The MESSAGE and MESSAGE 
keys are used to scroll through the settings in a sub-menu. The display indicates which
keys can be used at any given point. A summary of the menu structure for setpoints and
actual values can be found on pages 5–1 and 6–1, respectively.

CHAPTER 1: GETTING STARTED USING THE RELAY
750 FEEDER MANAGEMENT RELAY – INSTRUCTION MANUAL 1 - 3
1.2 Using the Relay
1.2.1 Menu Navigation
The relay has three types of display messages: actual values, setpoints, and target
messages.
Setpoints are programmable settings entered by the user. These types of messages are
located within a menu structure that groups the information into categories. Navigating
the menu structure is described below. A summary of the menu structure for setpoints and
actual values can be found in Setpoints Main Menu on page 5–1 and Actual Values Main
Menu on page 6–1, respectively.
Actual values include the following information:
1. The status of logic inputs (both virtual and hardware), last trip information,
fault location, and relay date and time.
2. Metering values measured by the relay, such as current, voltage, frequency,
power, energy, demand, and analog inputs.
3. Maintenance data. This is useful statistical information that may be used for
preventive maintenance. It includes trip counters and accumulated arcing
current.
4. Event recorder downloading tool.
5. Product information including model number, firmware version, additional
product information, and calibration dates.
6. Oscillography and data logger downloading tool.
7. A list of active conditions.
Alarms, trip conditions, diagnostics, and system flash messages are grouped under Target
messages.
Press the MENU key to access the header of each the three main
menus (for setpoints, actual values, and target messages), displayed
as follows:
Press the MENU key to display the header for the setpoints menu,
then press the MESSAGE key to display the header of the first
setpoints page.
The setpoint pages are numbered, have an ‘S’ prefix for easy
identification, and have a name which provides a general idea of the
settings available in that page.
SETPOINTS []
ACTUAL VALUES []
TARGET MESSAGES []

1 - 4 750 FEEDER MANAGEMENT RELAY – INSTRUCTION MANUAL
USING THE RELAY CHAPTER 1: GETTING STARTED
Press the MESSAGE and MESSAGE keys to scroll through all the
available setpoint page headers.
Press the MESSAGE key to enter the corresponding page. Press the MESSAGE 
and MESSAGE keys to scroll through the page headers until the required message
is reached. The end of a page is indicated by the message END OF PAGE Sn, where n
represents the number of the setpoints page.
Press the MENU key to display the header for the actual values
menu, then press the MESSAGE key to display the header for the
first actual values page. The actual values pages are numbered,
have an ‘A’ prefix for easy identification and have a name which
gives a general idea of the information available in that page.
Pressing the MESSAGE and MESSAGE keys will scroll through
all the available actual values page headers.
Press the MESSAGE key to enter the corresponding page. Press the MESSAGE 
and MESSAGE keys to scroll through the page headers until the required message
is reached. The end of a page is indicated by the message END OF PAGE An, where n
represents the number of the actual values page.
Select the actual values menu and press the MESSAGE key to
enter the first page. Press the MESSAGE or MESSAGE keys until
the A2 METERING page appears.
Press the MESSAGE key to display the first sub-page heading for
Page 2 of actual values.
Press the MESSAGE and MESSAGE keys to scroll the display up
and down through the sub-page headers. Pressing the MESSAGE
key at any sub-page heading will return the display to the heading of
the corresponding setpoint or actual value page, and pressing it
again will return the display to the actual values main menu header.
Press the MESSAGE key until the DEMAND sub-page heading
appears. At this point, press the MESSAGE key to display the
messages in this sub-page.
SETPOINTS []
S1 RELAY SETUP
ACTUAL VALUES []
A1 STATUS
ACTUAL VALUES []
A2 METERING
CURRENT []
DEMAND []

CHAPTER 1: GETTING STARTED USING THE RELAY
750 FEEDER MANAGEMENT RELAY – INSTRUCTION MANUAL 1 - 5
If instead you press the MESSAGE key, the display will return to the previous sub-
page heading; in this case,
When the symbols and []appear on the top line, it indicates that additional sub-
pages are available and can be accessed by pressing the MESSAGE key. Pressing
MESSAGE while at the Demand sub-page heading displays the following:
Press the MESSAGE key to return to the Demand sub-page
heading.
Press the MESSAGE key to display the actual values of this second
sub-page. Actual values messages and setpoints always have a
colon separating the name of the value and the actual value or
setpoint. This particular message displays the last Phase A current
demand as measured by the relay.
The menu path to this value is shown as A2 METERING  DEMAND PHASE A
CURRENT LAST PHASE A CURRENT DEMAND. Setpoints and actual values messages
are referred to in this manner throughout the manual.
To summarize the above example, the A2 METERING  DEMAND PHASE A CURRENT
LAST PHASE A CURRENT DEMAND path representation describes the following key-
press sequence: press the MENU key until the actual values menu header is displayed,
then press the MESSAGE and MESSAGE keys until the A2 METERING message
is displayed, then press the MESSAGE and MESSAGE keys to display the
DEMAND message, then press the MESSAGE key to reach the PHASE A CURRENT
message, followed by MESSAGE one last time to display the LAST PHASE A CURRENT
DEMAND actual value.
Press the MESSAGE key to display the next actual value message.
Press the MESSAGE or MESSAGE keys to scroll the display
through all the actual value displays in this second sub-page.
Press the MESSAGE key to reverse the process described above
and return the display to the previous level.
ENERGY []
PHASE A []
CURRENT
LAST PHASE A CURRENT
DEMAND: 0 A
MAX PHASE A CURRENT
DEMAND: 0 A
PHASE A []
CURRENT

1 - 6 750 FEEDER MANAGEMENT RELAY – INSTRUCTION MANUAL
USING THE RELAY CHAPTER 1: GETTING STARTED
Press the MESSAGE key twice to return to the A2 METERING 
DEMAND sub-page header.
1.2.2 Panel Keying Example
The following figure gives a specific example of how the keypad is used to navigate
through the menu structure. Specific locations are referred to throughout this manual by
using a ‘path representation’. The example shown in the figure gives the key presses
required to read the total arcing current in phase B denoted by the path A3 MAINTENANCE
 ARCING CURRENT  TOTAL ARCING CURRENT ∅B.
Press the menu key until the relay displays the actual values page.
DEMAND []
ACTUAL VALUES []
Press the MESSAGE key
ACTUAL VALUES []
A1 STATUS
Press the MESSAGE key
ACTUAL VALUES []
A2 METERING
Press the MESSAGE key
ACTUAL VALUES []
A3 MAINTENANCE MESSAGE TRIP COUNTER []
MESSAGE ARCING CURRENT []MESSAGE TOTAL ARCING CURRENT
φA: 0kA2- cycle
MESSAGE TOTAL ARCING CURRENT
φB: 0kA2- cycle

CHAPTER 1: GETTING STARTED CHANGING SETPOINTS
750 FEEDER MANAGEMENT RELAY – INSTRUCTION MANUAL 1 - 7
1.3 Changing Setpoints
1.3.1 Introduction
There are several classes of setpoints, each distinguished by the way their values are
displayed and edited.
The relay's menu is arranged in a tree structure. Each setting in the menu is referred to as a
setpoint, and each setpoint in the menu may be accessed as described in the previous
section.
The settings are arranged in pages with each page containing related settings; for
example, all the Phase Time Overcurrent 1 settings are contained within the same page. As
previously explained, the top menu page of each setting group describes the settings
contained within that page. Pressing the MESSAGE keys allows the user to move between
these top menus. A complete editable setpoint chart is available as an Excel spreadsheet
from the GE Multilin website at http://www.gedigitalenergy.com.
All of the 750/760 settings fall into one of following categories: device settings, system
settings, logic input settings, output relay settings, monitoring settings, control settings,
and testing settings.
NOTE
Note IMPORTANT NOTE: Settings are stored and used by the relay immediately after they are
entered. As such, caution must be exercised when entering settings while the relay is in
service. Modifying or storing protection settings is not recommended when the relay is
in service, since any incompatibility or lack of coordination with other previously saved
settings may cause unwanted operations.
Now that we have become more familiar with maneuvering through messages, we can
learn how to edit the values used by all setpoint classes.
Hardware and passcode security features are designed to provide protection against
unauthorized setpoint changes. Since we will be programming new setpoints using the
front panel keys, a hardware jumper must be installed across the setpoint access terminals
(C10 and C11) on the back of the relay case. Attempts to enter a new setpoint without this
electrical connection will result in an error message.
The jumper does not restrict setpoint access via serial communications. The relay has a
programmable passcode setpoint, which may be used to disallow setpoint changes from
both the front panel and the serial communications ports. This passcode consists of up to
eight (8) alphanumeric characters.
The factory default passcode is “0”. When this specific value is programmed into the relay it
has the effect of removing all setpoint modification restrictions. Therefore, only the
setpoint access jumper can be used to restrict setpoint access via the front panel and
there are no restrictions via the communications ports.
When the passcode is programmed to any other value, setpoint access is restricted for the
front panel and all communications ports. Access is not permitted until the passcode is
entered via the keypad or is programmed into a specific register (via communications).
Note that enabling setpoint access on one interface does not automatically enable access
for any of the other interfaces (i.e., the passcode must be explicitly set in the relay via the
interface from which access is desired).

1 - 8 750 FEEDER MANAGEMENT RELAY – INSTRUCTION MANUAL
CHANGING SETPOINTS CHAPTER 1: GETTING STARTED
A front panel command can disable setpoint access once all modifications are complete.
For the communications ports, writing an invalid passcode into the register previously
used to enable setpoint access disables access. In addition, setpoint access is
automatically disabled on an interface if no activity is detected for thirty minutes.
The EnerVista 750/760 Setup software incorporates a facility for programming the relay's
passcode as well as enabling and disabling setpoint access. For example, when an
attempt is made to modify a setpoint but access is restricted, the software will prompt the
user to enter the passcode and send it to the relay before the setpoint is actually written to
the relay. If a SCADA system is used for relay programming, it is the programmer’s
responsibility to incorporate appropriate security for the application.
1.3.2 The HELP Key
Pressing the HELP key displays context-sensitive information about setpoints such as the
range of values and the method of changing the setpoint. Help messages will
automatically scroll through all messages currently appropriate.
1.3.3 Numerical Setpoints
Each numerical setpoint has its own minimum, maximum, and step value. These
parameters define the acceptable setpoint value range. Two methods of editing and
storing a numerical setpoint value are available.
The first method uses the 750/760 numeric keypad in the same way as any electronic
calculator. A number is entered one digit at a time with the 0 to 9 and decimal keys. The
left-most digit is entered first and the right-most digit is entered last. Pressing ESCAPE
before the ENTER key returns the original value to the display.
The second method uses the VALUE key to increment the displayed value by the step
value, up to a maximum allowed and then wraps around to the minimum value. Likewise,
the VALUE key decrements the displayed value by the step value, down to a minimum
value and then wraps around to the maximum value.
For example:
Select the S2 SYSTEM SETUP  BUS VT SENSING NOMINAL VT
SECONDARY VOLTAGE setpoint message.
Press the 6, 3, decimal, and 9 keys.
The display message will change as shown.
NOMINAL VT SECONDARY
VOLTAGE: 120.0 V
NOMINAL VT SECONDARY
VOLTAGE: 63.9 V

CHAPTER 1: GETTING STARTED CHANGING SETPOINTS
750 FEEDER MANAGEMENT RELAY – INSTRUCTION MANUAL 1 - 9
Until the ENTER key is pressed, editing changes are not registered by the relay.
Therefore, press the ENTER key to store the new value in memory.
This flash message will momentarily appear as confirmation of the
storing process. If 69.28 were entered, it would be automatically
rounded to 69.3.
1.3.4 Enumeration Setpoints
Enumeration setpoints have data values which are part of a set whose members are
explicitly defined by a name. A set is comprised of two or more members. Enumeration
values are changed using the VALUE keys.
For example:
Move to the S2 SYSTEM SETUP  BUS VT SENSING VT CONNECTION
TYPE setpoint message.
Press the VALUE key until the “Delta” value is displayed as shown
(in this manual, setpoint values are always shown in double
quotation marks).
Press the ENTER key to store this change into memory.
As before, confirmation of this action will momentarily flash on the
display.
The example shown in the following figures illustrates the key presses required to enter
system parameters such as the phase CT primary rating, ground CT primary rating, bus VT
connection type, secondary voltage, and VT ratio.
The following values will be entered:
Phase CT primary rating: 650 A
Ground CT primary rating: 100 A
Bus VT connection type: Delta
Secondary voltage: 115 V
VT Ratio: 14400 / 115 = 125.2
To set the phase CT primary rating, modify the S2 SYSTEM SETUP CURRENT SENSING 
PHASE CT PRIMARY setpoint as shown below.
NEW SETPOINT
STORED
VT CONNECTION TYPE:
Wye
VT CONNECTION TYPE:
Delta
NEW SETPOINT
STORED

1 - 10 750 FEEDER MANAGEMENT RELAY – INSTRUCTION MANUAL
CHANGING SETPOINTS CHAPTER 1: GETTING STARTED
Press the MENU key until the relay displays the setpoints menu
header.
To set the ground CT primary rating, modify the S2 SYSTEM SETUP CURRENT SENSING 
GROUND CT PRIMARY setpoint as shown below.
Press the MENU key until the relay displays the setpoints menu
header.
To set the ground bus VT connection type, modify the S2 SYSTEM SETUP  BUS VT SENSING
VT CONNECTION TYPE setpoint as shown below.
SETPOINTS []
Pres MESSAGE 
SETPOINTS []
S1 RELAY SETUP
Press MESSAGE 
SETPOINTS []
S2 SYSTEM SETUP
Press
MESSAGE 
CURRENT []
SENSING
Press
MESSAGE 
PHASE CT PRIMARY:
1000 A
Press the VALUE keys until 650 A is displayed, or enter the
value directly via the numeric keypad.
PHASE CT PRIMARY:
650 A
Press the ENTER key to store the setpoint. NEW SETPOINT
STORED
SETPOINTS []
Press MESSAGE 
SETPOINTS []
S1 RELAY SETUP
Press MESSAGE 
SETPOINTS []
S2 SYSTEM SETUP
Press
MESSAGE 
CURRENT []
SENSING
Press
MESSAGE 
PHASE CT PRIMARY:
1000 A
Press
MESSAGE 
GND CT PRIMARY:
50 A
Press the VALUE keys until 100 A is displayed, or enter the
value directly via the numeric keypad.
GND CT PRIMARY:
100 A
Press the ENTER key to store the setpoint. NEW SETPOINT
STORED