GE 469 - Page 335

CHAPTER I:
469 MOTOR MANAGEMENT RELAY – INSTRUCTION MANUAL I–17
event record ..................................................................................................................... 6-33
pre-trip value ..................................................................................................................... 6-5
setpoints ........................................................................................................................... 5-62
specifications..................................................................................................................... 2-8
testing................................................................................................................................ 7-12
three-phase example..................................................................................................... 7-12
trip counter....................................................................................................................... 6-30
UNBALANCE BIAS ................................................................................................ 5-38, 5-54
UNDERCURRENT
setpoints ........................................................................................................................... 5-61
setpoints for 2-speed motor ......................................................................................5-108
specifications................................................................................................................... 2-10
trip counter....................................................................................................................... 6-30
UNDERFREQUENCY
setpoints ........................................................................................................................... 5-79
specifications..................................................................................................................... 2-8
UNDERPOWER.................................................................................................................. 5-83
UNDERPOWER TRIPS ..................................................................................................... 6-31
UNDERVOLTAGE
setpoints ........................................................................................................................... 5-76
specifications................................................................................................................... 2-10
trip counter....................................................................................................................... 6-30
UNPACKING THE RELAY ................................................................................................. 1-1
UPGRADING FIRMWARE ............................................................................................... 4-35
V
VARIABLE FREQUENCY DRIVES ................................................................................. 5-20
VIBRATION ......................................................................................................................... 3-18
VIBRATION SWITCH ....................................................................................................... 2-11
VIBRATION SWITCH ALARM ........................................................................................ 5-29
VIBRATION SWITCH TRIP ............................................................................................. 5-29
VOLTAGE DEPENDENT OVERLOAD
acceleration curves............................................................................................. 5-50, 5-51
curves ................................................................................................................................ 5-46
custom curves ...................................................................................................... 5-50, 5-51
description.................................................................................................. 5-39
, 5-46, 5-52
protection curves...................................................................................... 5-52
, 5-53, 5-54
safe stall curve ................................................................................................................5-52
VOLTAGE INPUT ACCURACY TEST .............................................................................. 7-3
VOLTAGE INPUTS
description........................................................................................................................ 3-17
specifications..................................................................................................................... 2-7
wye VT connection..............................................................................................................3-18
VOLTAGE METERING ...................................................................................................... 6-13
VOLTAGE PHASE REVERSAL
see PHASE REVERSAL
VOLTAGE PHASE REVERSAL TEST............................................................................. 7-13
VOLTAGE SENSING
setpoints ........................................................................................................................... 5-19
VOLTAGE TRANSFORMER
see VTs
VOLTAGE TRANSFORMER RATIO ............................................................................... 5-19
VT CONNECTION TYPE .................................................................................................. 5-19
VT RATIO............................................................................................................................. 5-19
VTs