GE Power Management 745 Transformer Management Relay iii
in service .................................................................. 4-2
load-limit reduced ...................................................... 4-3
LOCAL ...................................................................... 4-3
messa
e ................................................................... 4-3
phase A .................................................................... 4-4
phase B .................................................................... 4-4
phase C .................................................................... 4-4
pickup ....................................................................... 4-4
self-test error ............................................................ 4-2
setpoint
roup 1 ........................................................ 4-3
setpoint
roup 2 ........................................................ 4-3
setpoint
roup 3 ........................................................ 4-3
setpoint
roup 4 ........................................................ 4-3
system status ............................................................ 4-3
test mode .................................................................. 4-2
transformer de-ener
ized........................................... 4-3
transformer overload ................................................. 4-3
trip............................................................................ 4-4
LIST OF FIGURES.......................................................A-1
LIST OF TABLES.........................................................A-2
LOAD-LIMIT REDUCED INDICATOR ............................ 4-3
LOCAL INDICATOR ..................................................... 4-3
LOCAL RESET MODE ..............................................10-15
LOGIC......................................................................... 7-1
LOGIC DIAGRAMS ...................................................... 7-1
LOGIC INPUTS.............................................3-9, 5-43, 6-2
commissionin
........................................................ 10-6
LOSS OF LIFE........................................................... 6-10
LOSS OF LIFE LIMIT ................................................. 7-34
LOSS-OF-LIFE .......................................................... 5-72
LOSS-OF-LIFE LIMIT.......................................5-75, 10-42
LOW VOLTAGE WINDING RATING ............................ 5-34
M
MANEUVERING........................................................... 2-1
MEASUREMENT UNITS............................................... 7-1
MEMORY MAP .......................................................... 8-17
MESSAGE INDICATOR................................................ 4-3
MESSAGE KEYS ......................................................... 4-5
METERING.................................................................. 6-4
MINIMUM OPERATING CURRENT............................10-43
MINIMUM PICKUP ...............................10-14, 10-20, 10-43
MODBUS
data formats............................................................ 8-74
data frame format ...................................................... 8-2
data packet format..................................................... 8-3
description ................................................................ 8-2
error codes.............................................................. 8-10
exception responses................................................ 8-10
function code 03h ..............................................8-6, 8-15
function code 04h ..............................................8-6, 8-15
function code 05h ..............................................8-7, 8-15
function code 06h ..............................................8-8, 8-16
function code 10h ...................................................... 8-9
memory map ........................................................... 8-17
memory map data formats........................................ 8-74
memory map or
anization ........................................ 8-16
supported function codes ........................................... 8-5
user map................................................................. 8-12
N
NEGATIVE SEQUENCE CURRENT .............................. 6-5
NEGATIVE SEQUENCE INSTANTANEOUS
OVERCURRENT
lo
ic dia
ram ...........................................................7-19
setpoints ..................................................................5-64
testin
...................................................................10-33
NEGATIVE SEQUENCE OVERCURRENT....................5-63
NEGATIVE SEQUENCE TIME OVERCURRENT
lo
ic dia
ram ...........................................................7-18
setpoints ..................................................................5-63
testin
...................................................................10-31
NEUTRAL INSTANTANEOUS OVERCURRENT
lo
ic dia
rams.................................................7-12, 7-13
setpoints ..................................................................5-56
testin
........................................................ 10-26, 10-27
NEUTRAL OVERCURRENT ........................................5-55
NEUTRAL TIME OVERCURRENT
lo
ic dia
ram ...........................................................7-11
setpoints ..................................................................5-55
testin
...................................................................10-24
NEXT KEY................................................................... 4-6
NUMBER KEYS ........................................................... 4-6
NUMERICAL SETPOINTS ............................................ 2-3
O
ONLOAD TAP CHANGER ...........................................5-36
OPERATING TIME....................................................10-16
OPTIONS
orderin
.................................................................... 1-4
ORDER CODES .......................................................... 1-4
OUTPUT RELAYS ....................................................... 6-3
commissionin
................................................10-6, 10-7
default flexlo
ic ........................................................5-84
description ...............................................................3-11
lo
ic dia
ram ...........................................................7-30
setpoints .........................................................5-84, 5-87
typical wirin
............................................................3-11
OUTPUTS
specifications ............................................................ 1-9
OVERCURRENT
round instantaneous ...............................................5-58
round time..............................................................5-57
lo
ic dia
rams........................................................... 7-8
ne
ative sequence instantaneous .............................5-64
ne
ative sequence time ............................................5-63
neutral instantaneous ...............................................5-56
neutral time..............................................................5-55
phase ......................................................................5-52
TOC curves..............................................................5-91
OVEREXCITATION
5th harmonic level ...........................................5-68, 7-23
description ...............................................................5-68
setpoints ..................................................................5-68
volts-per-hertz.................................................5-69, 7-24
OVERFREQUENCY
lo
ic dia
ram ...........................................................7-22
setpoints ..................................................................5-67
testin
...................................................................10-37
OVERVIEW ................................................................. 1-1
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