GEK-113032A W650 Wind Generator Protection System 2-7
2 PRODUCT DESCRIPTION 2.4 TECHNICAL SPECIFICATIONS
2
2.4.1.3 NEUTRAL TIME OVERCURRENT (51N)
Curve Shapes IEEE extremely / very / moderately inverse
IEC A/B/C/long-time inverse/short time inverse curve
IAC extremely / very / normally / moderately inverse
ANSI extremely / very / normally / moderately inverse
I
2
t
Definite time
Rectifier curve
FlexCurve™ A/B/C/D user curve
Curve Multiplier (Time Dial) 0.00 to 900.00 s in steps of 0.01 s
Reset type Instantaneous or time delayed according to IEEE
Timing accuracy Operate at > 1.03 times the pickup ±3% of operate time or
30 ms. (whichever is greater)
Saturation Level 48 times the pickup level
Snapshot Events Selectable by setting
Current Input Fundamental Phasor (without harmonics)
Pickup level 0.05 to 160.00 A in steps of 0.01 A
Dropout level 98% of the pickup level
Level Accuracy
±0.5% of the reading ± 10 mA from 0.05 to 10 A
±1.5% of the reading for higher values.
Curve Shapes IEEE extremely / very / moderately inverse
IEC A/B/C/long-time inverse/short time inverse curve
IAC extremely / very / normally / moderately inverse
ANSI extremely / very / normally / moderately inverse
I
2
t
Definite time
Rectifier curve
FlexCurve™ A/B/C/D user curve
Curve Multiplier (Time Dial) 0.00 to 900.00 s in steps of 0.01 s
Reset type Instantaneous or time delayed according to IEEE
Timing accuracy Operate at > 1.03 times the pickup ±3% of operate time
or 30 ms. (whichever is greater)
Saturation Level 48 times the pickup level
Snapshot Events Selectable by setting
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