GE 750 User Manual

GE Power Management 750/760 Feeder Management Relay 1-
11
1 PRODUCT OVERVIEW 1.2 TECHNICAL SPECIFICATIONS
1
1.2.5 MONITORING ELEMENTS
PHASE / NEUTRAL CURRENT
Pickup Level: 0.05 to 20.00 in steps of 0.01 x CT
Dropout Level: 97 to 98% of Pickup
Time Delay: 0 to 60000 in steps of 1 s (definite
time)
Level Accuracy: Per current input
Timing Accuracy: ± 100 ms
POWER FACTOR 1 / 2
Required Voltage: > 30% of nominal in all phases
Pickup Level: 0.50 Lag to 0.50 Lead in steps of
0.01
Dropout Level: 0.50 Lag to 0.50 Lead in steps of
0.01
Time Delay: 0 to 60 000 in steps of 1 s (definite
time)
Level Accuracy: ± 0.02
Timing Accuracy: ± 100 ms
ANALOG IN THRESHOLD 1 / 2
Pickup Level: 0 to 65535 in steps of 1 unit
Dropout Level: Programmable from 2 to 20% of
Pickup (under or over)
Time Delay: 0 to 60000 in steps of 1 s
Level Accuracy: ± 1%
Timing Accuracy: ± 100 ms
ANALOG IN RATE 1 / 2
Pickup Level: –1000 to 1000 µA/hr. in steps of 0.1
Dropout Level: 97 to 98% of Pickup
Time Delay: 0 to 60000.0 in steps of 1 s
Level Accuracy: ± 1%
Timing Accuracy: ± 100 ms
OVERFREQUENCY
Required Voltage: > 30% of nominal in phase A
Pickup Level: 20.01 to 65.00 in steps of 0.01 Hz
Dropout Level: Pickup - 0.03 Hz
Time Delay: 0.0 to 6000.0 in steps of 0.1 s
Level Accuracy: ± 0.02 Hz
Timing Accuracy: at 60 Hz: ± 34 ms
at 50 Hz: ± 40 ms
FAULT LOCATOR
Range: –327.68 to 327.66 km/miles
0 to 65534 Ohms
Memory: stores the 10 most recent faults
DEMAND
(accuracies based on less than 2 x CT and 50 to 130 V
inputs)
Measured Values: Phase A/B/C Current (A)
3Φ Real Power (MW)
3Φ Reactive Power (Mvar)
3Φ Apparent Power (MVA)
Measurement Type: Thermal Exponential, 90%
response time (programmed): 5, 10,
15, 20, 30, or 60 min.
Block Interval / Rolling Demand,
time interval (programmed): 5, 10,
15, 20, 30, or 60 min.
Block Interval with Start Demand
Interval Logic Input pulses
A Pickup Level: 10 to 10000 in steps of 1
MW Pickup Level: 0.1 to 3000.0 in steps of 0.1
Mvar Pickup Level: 0.1 to 3000.0 in steps of 0.1
MVA Pickup Level: 0.1 to 3000.0 in steps of 0.1
Level Accuracy: ± 2%
VT FAILURE
Programmable to inhibit dependent features.
BREAKER FAILURE TO OPERATE
Time Delay: 30 to 1000 ms in steps of 10
Timing Accuracy: 0 to +20 ms error
ACCUMULATED ARCING CURRENT
Pickup Level: 1 to 50 000 kA
2
-seconds in steps of
1
Start Delay: 0 to 100 ms in steps of 1
TRIP / CLOSE COIL MONITORS
Detect open trip and close circuits.
PULSE OUTPUT
Pulse output is 1 second on time and one second off time
after the programmed interval.

GE 750 Specifications

General

Brand	GE
Model	750
Category	Relays
Language	English