GE Power Management
745 Transformer Management Relay
iii
TABLE
OF
CONTENTS
5.2.7
TRANSFORMER TYPES TABLE ............................................................ 5-10
5.2.8
TABLE OF PHASE SHIFTS..................................................................... 5-23
5.3 S1 745 SETUP
5.3.1
DESCRIPTION ........................................................................................ 5-24
5.3.2
PASSCODE ............................................................................................. 5-24
5.3.3
PREFERENCES ...................................................................................... 5-25
5.3.4
COMMUNICATIONS ............................................................................... 5-26
5.3.5
DNP COMMUNICATIONS....................................................................... 5-27
5.3.6
RESETTING ............................................................................................ 5-28
5.3.7
CLOCK..................................................................................................... 5-28
5.3.8
DEFAULT MESSAGES ........................................................................... 5-29
a ADDING DEFAULT MESSAGES ............................................................ 5-29
b REMOVING DEFAULT MESSAGES....................................................... 5-29
5.3.9
SCRATCHPAD ........................................................................................ 5-30
5.3.10 INSTALLATION ....................................................................................... 5-30
5.3.11 745 OPTIONS.......................................................................................... 5-31
5.3.12 UPGRADE OPTIONS .............................................................................. 5-32
5.4 S2 SYSTEM SETUP
5.4.1
DESCRIPTION ........................................................................................ 5-33
5.4.2
TRANSFORMER ..................................................................................... 5-33
5.4.3
WINDING 1 (2/3)...................................................................................... 5-35
5.4.4
ONLOAD TAP CHANGER....................................................................... 5-36
5.4.5
HARMONICS ........................................................................................... 5-37
5.4.6
FLEXCURVES ......................................................................................... 5-37
5.4.7
VOLTAGE INPUT .................................................................................... 5-38
5.4.8
AMBIENT TEMPERATURE..................................................................... 5-39
5.4.9
ANALOG INPUT ...................................................................................... 5-40
5.4.10 DEMAND METERING ............................................................................. 5-41
5.4.11 ANALOG OUTPUTS................................................................................ 5-42
5.5 SETPOINTS S3 LOGIC INPUTS
5.5.1
DESCRIPTION ........................................................................................ 5-43
5.5.2
LOGIC INPUTS........................................................................................ 5-43
5.5.3
VIRTUAL INPUTS.................................................................................... 5-44
5.6 S4 ELEMENTS
5.6.1
DESCRIPTION ........................................................................................ 5-45
5.6.2
INTRODUCTION TO ELEMENTS ........................................................... 5-45
5.6.3
SETPOINT GROUP................................................................................. 5-46
5.6.4
DIFFERENTIAL ....................................................................................... 5-46
a PERCENT DIFFERENTIAL ..................................................................... 5-46
b HARMONIC INHIBIT................................................................................ 5-49
c ENERGIZATION INHIBIT ........................................................................ 5-49
d ENERGIZATION SENSING..................................................................... 5-50
e 5TH HARMONIC INHIBIT........................................................................ 5-51
5.6.5
INSTANTANEOUS DIFFERENTIAL........................................................ 5-52
5.6.6
PHASE OVERCURRENT ........................................................................ 5-52
a WINDING 1 (2/3) PHASE TIME OVERCURRENT .................................. 5-52
b WINDING 1 (2/3) PHASE INSTANTANEOUS OVERCURRENT 1 ......... 5-54
c WINDING 1 (2/3) PHASE INSTANTANEOUS OVERCURRENT 2 ........ 5-54
5.6.7
NEUTRAL OVERCURRENT ................................................................... 5-55
a WINDING 1 (2/3) NEUTRAL TIME OVERCURRENT ............................. 5-55
b WINDING 1 (2/3) NEUTRAL INSTANTANEOUS OVERCURRENT 1 .... 5-56
c WINDING 1 (2/3) NEUTRAL INSTANTANEOUS OVERCURRENT 2 .... 5-56
5.6.8
GROUND OVERCURRENT .................................................................... 5-57
a WINDING 1 (2/3) GROUND TIME OVERCURRENT .............................. 5-57
b WINDING 1 (2/3) GROUND INSTANTANEOUS OVERCURRENT 1 ..... 5-58
c WINDING 1 (2/3) GROUND INSTANTANEOUS OVERCURRENT 2 ..... 5-58
5.6.9
RESTRICTED GROUND (DIFFERENTIAL GROUND) ........................... 5-59
a WINDING 1 (2/3) RESTRICTED GROUND FAULT ................................ 5-59
Summary of Contents for 745 TRANSFORMER MANAGEMENT RELAY
Page 30: ...2 8 745 Transformer Management Relay GE Power Management 2 3 SECURITY 2 GETTING STARTED 2 ...
Page 210: ...7 36 745 Transformer Management Relay GE Power Management 7 2 BLOCK DIAGRAMS 7 SCHEME LOGIC 7 ...
Page 322: ...9 12 745 Transformer Management Relay GE Power Management 9 3 USING 745PC 9 745 PC SOFTWARE 9 ...
Page 396: ...A 4 745 Transformer Management Relay GE Power Management A 1 FIGURES AND TABLES APPENDIXA A ...
Page 400: ...C 2 745 Transformer Management Relay GE Power Management C 1 WARRANTY INFORMATION APPENDIXC C ...
Page 406: ...vi 745 Transformer Management Relay GE Power Management ...
Page 407: ...GE Power Management 745 Transformer Management Relay NOTES ...
