Instruction manual
–
AQ G3x7 Generator protection IED
199 (211
)
Residual instantaneous overcurrent protection I0>>> (50N)
Operating characteristic
Instantaneous
Picku-up current inaccuracy
<2%
Reset ratio
0.95
Operate time at 2*In
Peak value calculation
Fourier calculation
<15 ms
<25 ms
Reset time
16
–
25 ms
Transient overreach
Peak value calculation
Fourier calculation
80 %
2 %
Residual time overcurrent protection I0>, I0>> (51N)
Pick-up current inaccuracy
< 2%
Operation time inaccuracy
±5% or ±
15ms
Reset ratio
0.95
Minimum operating time with IDMT
35ms
Reset time
Approx 35ms
Transient overreach
2 %
Pickup time
25
–
30ms
Voltage restrained or controlled overucrrent protection Iv> (51V)
Pick-up current inaccuracy
< 2%
Operation time inaccuracy
±5% or ±
15ms
Reset ratio
0.95
Transient overreach
2 %
7.1.2
D
IRECTIONAL
O
VERCURRENT PROTECTION FUNCTIONS