745 TRANSFORMER PROTECTION SYSTEM – INSTRUCTION MANUAL TOC–I
Table of Contents
1: GETTING STARTED IMPORTANT PROCEDURES .......................................................................................................... 1-1
C
AUTIONS AND WARNINGS ............................................................................................... 1-1
I
NSPECTION CHECKLIST ...................................................................................................... 1-1
M
ANUAL ORGANIZATION ................................................................................................... 1-2
USING THE RELAY ............................................................................................................................ 1-3
M
ENU NAVIGATION ............................................................................................................. 1-3
P
ANEL KEYING EXAMPLE .................................................................................................... 1-5
CHANGING SETPOINTS ................................................................................................................. 1-6
I
NTRODUCTION ..................................................................................................................... 1-6
U
SING THE HELP KEY ........................................................................................................ 1-6
N
UMERICAL SETPOINTS ...................................................................................................... 1-6
E
NUMERATION SETPOINTS ................................................................................................. 1-7
T
EXT SETPOINTS .................................................................................................................. 1-7
SECURITY ............................................................................................................................................. 1-9
I
NSTALLATION ....................................................................................................................... 1-9
C
HANGING THE PASSCODE ................................................................................................ 1-9
D
ISABLING AND ENABLING PASSCODE SECURITY .......................................................... 1-10
2: OVERVIEW INTRODUCTION ................................................................................................................................ 2-1
D
ESCRIPTION ........................................................................................................................ 2-1
P
ROTECTION FEATURES ...................................................................................................... 2-2
O
RDER CODES ..................................................................................................................... 2-3
SPECIFICATIONS ............................................................................................................................... 2-5
A
PPLICABILITY ...................................................................................................................... 2-5
I
NPUTS .................................................................................................................................. 2-5
P
ROTECTION ELEMENTS ...................................................................................................... 2-6
O
UTPUTS ...............................................................................................................................2-9
M
ISCELLANEOUS .................................................................................................................. 2-10
3: INSTALLATION DRAWOUT CASE ............................................................................................................................... 3-1
C
ASE DESCRIPTION ............................................................................................................. 3-1
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ANEL CUTOUT .................................................................................................................... 3-2
C
ASE MOUNTING ................................................................................................................. 3-2
U
NIT WITHDRAWAL AND INSERTION ................................................................................ 3-3
E
THERNET CONNECTION ..................................................................................................... 3-6
TYPICAL WIRING ............................................................................................................................... 3-7
D
ESCRIPTION ........................................................................................................................ 3-7
R
EAR TERMINAL LAYOUT .................................................................................................... 3-7
W
IRING DIAGRAMS ............................................................................................................. 3-10
P
HASE SEQUENCE AND TRANSFORMER POLARITY ......................................................... 3-12
C
URRENT TRANSFORMER INPUTS ..................................................................................... 3-12
AC V
OLTAGE INPUT ............................................................................................................ 3-14
L
OGIC INPUTS ...................................................................................................................... 3-14
C
ONTROL POWER ................................................................................................................ 3-15
A
NALOG INPUT .................................................................................................................... 3-16
T
AP POSITION INPUT ........................................................................................................... 3-16
RTD D
RIVER/SENSOR ........................................................................................................ 3-16
O
UTPUT RELAYS .................................................................................................................. 3-16
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