GE D90 Plus - Page 688

678 D90
PLUS
LINE DISTANCE PROTECTION SYSTEM – INSTRUCTION MANUAL
INDEX
Time overcurrent curves
definite time curve ............................................................................ 235
FlexCurv es ............................................................................................ 235
I2t curves ............................................................................................... 234
IAC curves .............................................................................................. 233
IEC curves .............................................................................................. 231
IEEE curves ............................................................................................ 230
overview ................................................................................................. 229
recloser curves .................................................................................... 235
Tracking frequency operands ....................................................... 580
Transient recorder
analog channels ................................................................................. 519
description ............................................................................................ 512
digital channels .................................................................................. 517
front panel indications .................................................................... 514
logic .......................................................................................................... 516
overview ....................................................................................................17
settings ................................................................................................... 515
specifications ..........................................................................................33
Trip output
description ............................................................................................ 324
logic .......................................................................................................... 328
operands ................................................................................................ 427
settings ................................................................................................... 325
single-pole operation ....................................................................... 325
specifications ..........................................................................................28
three-pole operation ........................................................................ 324
Type tests .....................................................................................................38
Typical wiring .............................................................................................42
U
Underfrequency
description ............................................................................................ 361
logic .......................................................................................................... 363
settings ................................................................................................... 361
specifications ..........................................................................................29
USB port
connect computer ...................................................................................9
password access ............................................................................... 612
specifications ..........................................................................................36
User-configurable operands
communications ........................................168, 414, 487, 502, 575
User-programmable self-tests ..................................................... 148
V
Voltage cut-off level ............................................................................ 177
Voltage elements .................................................................................. 265
Voltage input settings ........................................................................ 176
Voltage metering
operands ................................................................................................ 579
specifications ..........................................................................................31
VT fuse failure
description .............................................................................................333
logic ..........................................................................................................334
operands ................................................................................................427
settings ....................................................................................................334
specifications ..........................................................................................29
W
Warnings ......................................................................................................... 1
Warranty ....................................................................................................669
Wattmetric zero-sequence directional
description .............................................................................................287
logic ..........................................................................................................291
settings ....................................................................................................287
specifications ..........................................................................................29
Wiring ..............................................................................................................42
Z
Zero-sequence CBCT ..............................................................................48