2-10 W650 Wind Generator Protection System GEK-113032A
2.4 TECHNICAL SPECIFICATIONS 2 PRODUCT DESCRIPTION
2
2.4.1.8 NEGATIVE SEQUENCE CURRENT (46)
2.4.1.9 PHASE DIRECTIONAL (67P)
2.4.1.10 GROUND DIRECTIONAL (67G)
Current Input Fundamental Phasor (without harmonics)
Pickup level 0.05 to 160.0 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
Directionality Forward and reverse selectable by setting
Polarizing Quadrature Voltage:
ABC seq: Phase A (VBC), Phase B (VCA), Phase C
(VAB)
ACB seq: Phase A (VCB), Phase B (VAC), Phase C
(VBA)
Polarizing voltage threshold 0 to 850 Vac in steps of 1 V
Characteristic angle -90º to +90º in steps of 1º
Block Logic Permission or Block selectable by setting
Angle accuracy
±2º for I>0.1 A and V>5 Vac
Operate time <30ms, typically
Directionality Forward and reverse selectable by setting
Polarizing Voltage, current, dual
Polarizing Voltage V
N
(measured or calculated, selected by setting)
Polarizing Current
Isg (measured from 5
th
current transformer)
Operating Current
Ig (measured from 4
th
current transformer)
Polarizing Voltage threshold 0 to 500 Vac in steps of 1 V
Polarizing Current threshold 0.005 A
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