1-
10
750/760 Feeder Management Relay GE Power Management
1.2 TECHNICAL SPECIFICATIONS 1 PRODUCT OVERVIEW
1
GROUND / SENSITIVE GROUND DIRECTIONAL
CONTROL
Polarized by voltage, current or both voltage and current
(For voltage element polarizing, the source VTs must be
connected in Wye).
Polarizing Voltage: -Vo
Polarizing Current: Ig
MTA: 0 to 359° in steps of 1°
Angle Accuracy: ± 2°
Operation Delay: 25 to 40 ms
BUS UNDERVOLTAGE 1 / 2 AND LINE UNDER-
VOLTAGE 3 / 4
Minimum Voltage: > programmable threshold from
0.00 to 1.25 x VT in steps of 0.01
Pickup Level: 0.00 to 1.25 in steps of 0.01 x VT
Dropout Level: 102 to 103% of Pickup
Curve: definite time or inverse time
Time Delay: 0.0 to 6000.0 in steps of 0.1 s
Phases: Any One/Any Two/All Three (pro-
grammed) to operate for output (bus
undervoltage only)
Level Accuracy: Per voltage input
Timing Accuracy: ± 100 ms
OVERVOLTAGE 1 / 2
Pickup Level: 0.00 to 1.25 in steps of 0.01 x VT
Dropout Level: 97 to 98% of Pickup
Time Delay: 0.0 to 6000.0 in steps of 0.1 s (defi-
nite time)
Phases: Any One/Any Two/All Three (pro-
grammable) phases have to operate
for output
Level Accuracy: Per voltage input
Timing Accuracy: ± 100 ms
NEGATIVE SEQUENCE VOLTAGE
Pickup Level: 0.00 to 1.25 in steps of 0.01 x VT
Dropout Level: 97 to 98% of Pickup
Time Delay: 0.0 to 6000.0 in steps of 0.1 (definite
or inverse time)
Level Accuracy: 3 x voltage input error
Timing Accuracy: ± 100 ms
UNDERFREQUENCY 1 / 2
Minimum Voltage: 0.00 to 1.25 in steps of 0.01 x VT in
Phase A
Pickup Level: 20.00 to 65.00 in steps of 0.01 Hz
Dropout Level: Pickup + 0.03 Hz
Time Delay: 0.00 to 600.00 in steps of 0.01 s
(definite time)
Level Accuracy: ± 0.02 Hz
Timing Accuracy: at 60 Hz: ± 25 ms
at 50 Hz: ± 30 ms
BREAKER FAILURE
Pickup Level: 0.05 to 20.0 x CT in steps of 0.01
Dropout Level: 97 to 98% of Pickup
Time Delay: 0.03 to 1.00 s in steps of 10
Timing Accuracy: ± 20 ms error
Level Accuracy: per CT input
NEUTRAL DISPLACEMENT
Pickup Level: 0.00 to 1.25 in steps of 0.01 x VT
Dropout Level: 97 to 98% of Pickup
Curve Shape: ANSI Extremely/Very/Moderately/
Normally Inverse
Definite Time (0.1 s base curve)
IEC Curve A/B/C and Short
FlexCurve™ A/B (programmable
curves)
IAC Extreme/Very/Inverse/Short
Curve Multiplier: 0.00 to 100.00 in steps of 0.01
Reset Type: Instantaneous/Linear
Level Accuracy: 3 x voltage input error
Timing Accuracy: ±50 ms
To Next Page
Loading...
