GE Multilin 469 Instruction Manual page 337

CHAPTER I:
469 MOTOR MANAGEMENT RELAY – INSTRUCTION MANUAL
description ........................................................................................................................ 3-12
wiring diagram .....................................................................................................................3-11
U
UNBALANCE
actual values .................................................................................................................... 6-11
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
UNDERCURRENT
setpoints ........................................................................................................................... 5-61
setpoints for 2-speed motor ...................................................................................... 5-107
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
UPGRADING FIRMWARE
V
VARIABLE FREQUENCY DRIVES
VIBRATION
......................................................................................................................... 3-19
VIBRATION SWITCH
....................................................................................................... 2-11
VIBRATION SWITCH ALARM
VIBRATION SWITCH TRIP
VOLTAGE DEPENDENT OVERLOAD
acceleration curves ............................................................................................. 5-50
curves ................................................................................................................................ 5-46
custom curves ...................................................................................................... 5-50
description .................................................................................................. 5-39
protection curves ...................................................................................... 5-52
safe stall curve ................................................................................................................ 5-52
VOLTAGE INPUT ACCURACY TEST
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
................................................................................................. 1-1
............................................................................................... 4-35
................................................................................. 5-20
........................................................................................ 5-29
............................................................................................. 5-29
.............................................................................. 7-3
............................................................................. 7-13
5-54
,
5-51
,
5-51
,
5-46 5-52
, ,
5-53 5-54
, ,
I–17