GE Multilin GEK-113328A Instruction Manual page 34

2.4 TECHNICAL SPECIFICATIONS
2.4.1.2 GROUND TIME OVERCURRENT (51G)
Current Input
Rated current
Pickup level
Dropout level
2
Level Accuracy
Curve Shapes
Curve Multiplier (Time Dial)
Reset type
Timing accuracy
Saturation Level
Snapshot Events
2.4.1.3 NEUTRAL TIME OVERCURRENT (51N)
Current Input
Pickup level
Dropout level
Level Accuracy
Curve Shapes
Curve Multiplier (Time Dial)
Reset type
Timing accuracy
Saturation Level
Snapshot Events
2-8
Phasor (without harmonics) or RMS
For connection to 1 or 5 A CTs.
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.
IEEE extremely / very / moderately inverse
IEC A/B/C/long-time inverse/short time inverse curve
IAC extremely / very / moderately inverse
ANSI extremely / very / normally / moderately inverse
2
I t
Definite time
Rectifier curve
FlexCurve™ A/B/C/D user curve
0.00 to 900.00 s in steps of 0.01 s
Instantaneous or time delayed according to IEEE
Operate at > 1.03 times the pickup ±3% of operate time or
50 ms. (whichever is greater)
48 times the pickup level
Selectable by setting
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.
IEEE extremely / very / moderately inverse
IEC A/B/C/long-time inverse/short time inverse curve
IAC extremely / very / moderately inverse
ANSI extremely / very / normally / moderately inverse
2
I t
Definite time
Rectifier curve
FlexCurve™ A/B/C/D user curve
0.00 to 900.00 s in steps of 0.01 s
Instantaneous or time delayed according to IEEE
Operate at > 1.03 times the pickup ±3% of operate time or
50 ms. (whichever is greater)
48 times the pickup level
Selectable by setting
G650 Generator Protection & Control System
2 PRODUCT DESCRIPTION
GEK-113328A