GE 745 TRANSFORMER MANAGEMENT RELAY

iv 745 Transformer Management Relay GE Power Management
P
PANEL CUTOUT ......................................................... 3-1
PASSCODE
chan
g
in
g
................................................................... 2-6
security...............................................................2-6, 2-7
setpoints ..................................................................5-24
PERCENT DIFFERENTIAL
dual-slope characteristic...........................................5-47
harmonic restrained................................................10-14
lo
g
ic dia
g
ram ............................................................ 7-2
operatin
g
principle....................................................5-47
setpoints ..................................................................5-46
zones of protection...................................................5-60
PHASE A INDICATOR ................................................. 4-4
PHASE ANGLE CORRECTION..................................... 5-8
PHASE B INDICATOR ................................................. 4-4
PHASE C INDICATOR ................................................. 4-4
PHASE INSTANTANEOUS OVERCURRENT
lo
g
ic dia
g
rams...................................................7-9, 7-10
setpoints ..................................................................5-54
testin
g
........................................................ 10-23, 10-24
PHASE OVERCURRENT ............................................5-52
PHASE SEQUENCE .................................................... 3-8
PHASE SHIFTS ..........................................................5-23
description ...............................................................5-23
three-phase transformers........................................... 5-6
PHASE TIME OVERCURRENT
lo
g
ic dia
g
ram ............................................................ 7-8
setpoints ..................................................................5-52
testin
g
...................................................................10-21
PHASORS
ABC sequence .......................................................... 5-6
ACB sequence .......................................................... 5-7
PICKUP INDICATOR ................................................... 4-4
PLACING THE RELAY INTO SERVICE......................10-46
POSITIVE SEQUENCE CURRENT ............................... 6-5
POWER .....................................................................6-11
PREFAULT VALUES...................................................5-89
PREFERENCES .........................................................5-25
PRODUCT INFO.........................................................6-17
PROGRAM PORT ........................................................ 4-4
PROTECTION ELEMENTS
specifications ............................................................ 1-6
tar
g
et messa
g
es.......................................................6-20
PROTECTION SCHEMES
5th harmonic ................................................. 5-68, 10-41
ener
g
ization detection ............................................10-19
features .................................................................... 1-2
frequency decay.......................................................5-66
frequency decay rate ................................... 10-39, 10-40
g
round instantaneous o/c..........................................5-58
g
round instantaneous overcurrent ................ 10-28, 10-29
g
round time o/c ........................................................5-57
g
round time overcurrent..........................................10-27
harmonic restrained percent differential...................10-14
instantaneous differential...............................5-52, 10-20
insulation a
g
in
g
.............................................5-73, 10-42
ne
g
ative sequence instantaneous o/c........................5-64
ne
g
ative sequence instantaneous overcurrent .........10-33
ne
g
ative sequence time o/c ......................................5-63
ne
g
ative sequence time overcurrent........................10-31
neutral instantaneous o/c..........................................5-56
neutral instantaneous overcurrent ................ 10-26, 10-27
neutral time o/c ........................................................5-55
neutral time overcurrent..........................................10-24
overfrequency ............................................... 5-67, 10-37
phase instantaneous o/c...........................................5-54
phase instantaneous overcurrent ................. 10-23, 10-24
phase time o/c .........................................................5-52
phase time overcurrent...........................................10-21
restricted
g
round ......................................................5-59
restricted
g
round fault ............................................10-30
THD level...................................................... 5-70, 10-43
underfrequency ...................................5-65, 10-35, 10-37
volts-per-hertz............................................... 5-69, 10-41
R
REAR TERMINAL ASSIGNMENTS ................................3-5
REAR TERMINAL LAYOUT ...........................................3-4
RELAY INSERTION ......................................................3-3
RELAY WITHDRAWAL..................................................3-2
REMOTE RESET MODE ...........................................10-15
RESET KEY .................................................................4-6
RESETTING...............................................................5-28
RESISTANCE GROUNDED WYE WINDING.................5-59
RESTRAINT CURRENT ................................................6-6
RESTRICTED GROUND
implementation.........................................................5-61
lo
g
ic ........................................................................7-17
setpoints..................................................................5-59
settin
g
s example ......................................................5-61
testin
g
...................................................................10-30
zones of protection...................................................5-60
REVISION CODES .....................................................6-17
RS232 COMMUNICATIONS .................................3-13, 9-4
RS422 COMMUNICATIONS ...............................3-12, 3-13
RS485 COMMUNICATIONS .................................3-12, 9-4
RTD
calibration..............................................................10-11
driver/sensor............................................................3-10
measured temperature ...........................................10-12
resistance vs. temperature........................................5-39
S
S1 745 SETUP ..................................................5-24, 11-1
S2 SYSTEM SETUP ..........................................5-33, 11-2
S3 LOGIC INPUTS ............................................5-43, 11-5
S4 ELEMENTS ..................................................5-45, 11-6
S5 OUTPUTS .................................................. 5-80, 11-18
S6 TESTING ..............................................................5-87
SCHEME LOGIC ..........................................................7-1
SCRATCHPAD ...........................................................5-30
SELF-TEST ERROR INDICATOR ..................................4-2
SELF-TEST ERRORS ................................. 6-3, 6-21, 6-22
SELF-TEST RELAY ....................................................7-31
SERVICING..............................................................10-46
SETPOINT ENTRY .......................................................5-2
SETPOINT GROUP ....................................................5-46
SETPOINT GROUP 1 INDICATOR ................................4-3
SETPOINT GROUP 2 INDICATOR ................................4-3
SETPOINT GROUP 3 INDICATOR ................................4-3
SETPOINT GROUP 4 INDICATOR ................................4-3