GE 745 Instruction Manual page 7

A: APPENDIX
745 TRANSFORMER PROTECTION SYSTEM – INSTRUCTION MANUAL
T E ................................................................................................................. 7-3
EST QUIPMENT
PRELIMINARY WORK ...................................................................................................................... 7-5
D ........................................................................................................................ 7-5
ESCRIPTION
D S
IELECTRIC TRENGTH
LOGIC INPUTS AND OUTPUT RELAYS ...................................................................................... 7-7
L I ...................................................................................................................... 7-7
OGIC NPUTS
O R .................................................................................................................. 7-8
UTPUT ELAYS
METERING ........................................................................................................................................... 7-9
D ........................................................................................................................ 7-9
ESCRIPTION
C I ................................................................................................................. 7-9
URRENT NPUTS
V I ................................................................................................................... 7-10
OLTAGE NPUT
T T
RANSFORMER YPE
A T
MBIENT EMPERATURE
A
NALOG OUTPUTS
T P ...................................................................................................................... 7-15
AP OSITION
PROTECTION SCHEMES ................................................................................................................. 7-16
P ......................................................................................................................... 7-16
RECAUTION
H R
ARMONIC ESTRAINED
I D
NSTANTANEOUS
P T O
HASE IME VERCURRENT
P I
HASE NSTANTANEOUS
P I
HASE NSTANTANEOUS
N T O
EUTRAL IME VERCURRENT
N I
EUTRAL NSTANTANEOUS
N I
EUTRAL NSTANTANEOUS
G T O
ROUND IME VERCURRENT
G I
ROUND NSTANTANEOUS
G I
ROUND NSTANTANEOUS
R G
ESTRICTED ROUND
R G
ESTRICTED ROUND
N -
EGATIVE SEQUENCE
N -
EGATIVE SEQUENCE
F .......................................................................................................................... 7-43
REQUENCY
O ................................................................................................................. 7-52
VEREXCITATION
I A
NSULATION GING
T M F
AP ONITOR AILURE
AUXILIARY PROTECTION AND MONITORING FUNCTIONS ............................................. 7-56
THD L S
EVEL CHEME
H D
ARMONIC ERATING
T O
RANSFORMER VERLOAD
PLACING THE RELAY INTO SERVICE ......................................................................................... 7-60
P ....................................................................................................................... 7-60
RECAUTIONS
P .......................................................................................................................... 7-60
ROCEDURE
CHANGE NOTES ................................................................................................................................ A-1
R H
EVISION ISTORY
C 745 M
HANGES TO THE
EU DECLARATION OF CONFORMITY ........................................................................................ A-5
EU D
ECLARATION
GE DIGITAL ENERGY WARRANTY .............................................................................................. A-6
W S
ARRANTY TATEMENT
T ....................................................................................... 7-6
ESTING
S ....................................................................................... 7-11
ELECTION
I ......................................................................................... 7-13
NPUT
............................................................................................................... 7-14
P D
ERCENT IFFERENTIAL
P ................................................................. 7-23
IFFERENTIAL ROTECTION
............................................................................................... 7-25
O 1 ...................................................................... 7-27
VERCURRENT
O 2 ...................................................................... 7-28
VERCURRENT
.......................................................................................... 7-29
O 1 ................................................................. 7-31
VERCURRENT
O 2 ................................................................. 7-32
VERCURRENT
.......................................................................................... 7-32
O 1 .................................................................. 7-35
VERCURRENT
O 2 .................................................................. 7-36
VERCURRENT
F P T ................................................................. 7-36
AULT OLARITY EST
F E T .................................................................. 7-37
AULT LEMENT EST
T O ..................................................................... 7-39
IME VERCURRENT
I O
NSTANTANEOUS VERCURRENT
............................................................................................................. 7-54
...................................................................................................... 7-55
.......................................................................................................... 7-56
F ..................................................................................... 7-57
UNCTION
................................................................................................. 7-58
.............................................................................................................. A-1
...................................................................................... A-2
ANUAL
............................................................................................................... A-5
..................................................................................................... A-6
.......................................................... 7-16
................................................ 7-42
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