O Vervoltage - GE 469 Instruction Manual

Motor management relay
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Note
5.10.2 Overvoltage
 OVERVOLTAGE[]
5.10.3 Phase Reversal
 PHASE
REVERSAL
5–80
Set
UNDERVOLTAGE TRIP MODE

VOLTAGE SENSING
ENABLE SINGLE VT OPERATION
balanced three phase system when fed from a single VT.

PATH: SETTINGS
S9 VOLTAGE ELEM.
OVERVOLTAGE
ALARM: Off
ASSIGN ALARM RELAYS:
MESSAGE
Alarm
OVERVOLTAGE ALARM
MESSAGE
PICKUP: 1.05 x RATED
OVERVOLTAGE ALARM
MESSAGE
DELAY: 3.0 s
OVERVOLTAGE ALARM
MESSAGE
EVENTS: Off
OVERVOLTAGE
MESSAGE
TRIP: Off
ASSIGN TRIP RELAYS:
MESSAGE
Trip
OVERVOLTAGE TRIP
MESSAGE
PICKUP: 1.10 x RATED
OVERVOLTAGE TRIP
MESSAGE
DELAY: 3.0 s
If enabled, once the magnitude of either Vab, Vbc, or Vca rises above the pickup level for a
period of time specified by the delay, a trip or alarm will occur (pickup levels are multiples
of motor nameplate voltage).
An overvoltage on running motor with a constant load results in decreased current.
However, iron and copper losses increase, causing an increase in motor temperature. The
current overload relay will not pickup this condition and provide adequate protection.
Therefore, the overvoltage element may be useful for protecting the motor in the event of
a sustained overvoltage condition.

PATH: SETTINGS
S9 VOLTAGE ELEM.
[]
PHASE REVERSAL
TRIP: Off
ASSIGN TRIP RELAYS:
MESSAGE
Trip
to "3-Phase", when the settings
is set to "On". The relay assumes a

OVERVOLTAGE
Range: Off, Latched, Unlatched
Range: Alarm, Alarm & Auxiliary2,
Range: 1.01 to 1.20 x RATED in steps of
Range: 0.5 to 60.0 s in steps of 0.1
Range: On, Off
Range: Off, Latched, Unlatched
Range: Trip, Trip & Auxiliary2, Trip &
Range: 1.01 to 1.20 x RATED in steps of
Range: 0.5 to 60.0 s in steps of 0.1

PHASE REVERSAL
Range: Off, Latched, Unlatched
Range: Trip, Trip & Auxiliary2, Trip &
469 MOTOR MANAGEMENT RELAY – INSTRUCTION MANUAL
CHAPTER 5: SETTINGS
S2 SYSTEM SETUP
Alarm & Aux2 & Aux3, Alarm &
Auxiliary3, Auxiliary2, Aux2 &
Aux3, Auxiliary3, None
0.01
Aux2 & Aux3, Trip & Auxiliary3
0.01
Aux2 & Aux3, Trip & Auxiliary3

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