GE Multilin G650 Manual page 39

2.4 TECHNICAL SPECIFICATIONS
2.4.1.6 NEUTRAL INSTANTANEOUS OVERCURRENT (50N)
Current Input
Pickup level
Dropout level
Level Accuracy
2
Overreach
Trip delay
Reset delay
Operate time
Timing accuracy
Snapshot Events
2.4.1.7 SENSITIVE GROUND INSTANTANEOUS OVERCURRENT (50SG)
Current Input
Rated current
Pickup level
Dropout level
Level Accuracy
Overreach
Trip delay
Reset delay
Operate time
Timing accuracy
Snapshot Events
2.4.1.8 NEGATIVE SEQUENCE TIME OVERCURRENT (51-2)
Current Input
Pickup level
Dropout level
Level Accuracy
2-10
Fundamental Phasor (without harmonics)
0.05 to 160.00 A in steps of 0.01 A
97% to 98% of the pickup level
Values at nominal frequency:
±0.5% of the reading ± 10 mA from 0.05 to 10 A
±1.5% of the reading for higher values
< 2%
0.00 to 900.00 s. in steps of 0.01 s.
0.00 to 900.00 s. in steps of 0.01 s.
<50 ms at 3 x Pickup at 50 Hz, typically
at 0 ms time delay (no intentional delay): 50ms
at non-zero time delay: ±3% of operate time or 50 ms
(whichever is greater)
Selectable by setting
Phasor (without harmonics) or RMS
For connection to 1 or 5 A CTs.
0.005 to 16.000 A in steps of 0.001 A
97% to 98% of the pickup level
Values at nominal frequency:
±1.5% of the reading ± 1 mA from 0.005 to 16 A
< 2%
0.00 to 900.00 s. in steps of 0.01 s.
0.00 to 900.00 s. in steps of 0.01 s.
<50 ms at 3 x Pickup at 50 Hz, typically
at 0 ms time delay (no intentional delay): 50ms
at non-zero time delay: ±3% of operate time or 50 ms
(whichever is greater)
Selectable by setting
Fundamental Phasor (without harmonics)
0.05 to 160.0 A in steps of 0.01 A
97% to 98% of the pickup level
Values at nominal frequency:
±0.5% of the reading ± 10 mA from 0.05 to 10 A
±1.5% of the reading for higher values
G650 Generator Protection & Control System
2 PRODUCT DESCRIPTION
GEK-113285A