GE Multilin GEK-113328A, Инструкция по эксплуатации, Страница: 37 / 218

GEK-113328A G650 Generator Protection & Control System 2-11
2 PRODUCT DESCRIPTION 2.4 TECHNICAL SPECIFICATIONS
2
2.4.1.9 NEGATIVE SEQUENCE INSTANTANEOUS OVERCURRENT (50-2)
Curve Shapes 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
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 50 ms. (whichever is greater)
Saturation Level 48 times the pickup level
Snapshot Events Selectable by setting
Current Input Fundamental Phasor (without harmonics)
Rated current For connection to 1 or 5 A CTs.
Pickup level 0.05 to 160.00 A in steps of 0.01 A
Dropout level 97% to 98 % of the pickup level
Level Accuracy Values at nominal frequency
±
0.5% of the reading
±
10 mA from 0.1 to 10 A
±
1.5% of the reading for higher values
Trip delay 0.00 to 900.00 s. in steps of 0.01 s.
Reset delay 0.00 to 900.00 s. in steps of 0.01 s.
Operate time 50 ms at 3 x Pickup at 50 Hz, typically
Timing accuracy Operate at 1.00 times the pickup ±3% of operate time or
50 ms. (whichever is greater)
Snapshot Events Selectable by setting