Siemens 7SJ82, Manual

Page: 1504 / 1638

Voltage-Differential Protection for Capacitors
Setting Values (General Functionality)
Matching-factor setting not phase-selective
phase-selective
Voltage matching factor k 0.5000 to 2000.0000 Increments of 0.0001
Setting Values (Protection Stage Vdiff>)
Threshold 0.005 p.u. to 1.000 p.u.
116
Increments of 0.001 p.u.
Operate delay 0.00 s to 60.00 s Increments of 0.01 s
Dropout
Dropout ratio for sec. threshold > 3 V 95 %
Dropout differential for sec. threshold 0.3 V to 3 V 150 mV
Dropout ratio for sec. threshold 0.2 V to 0.3 V 50 %
Times
Operate time with time delay = 0 ms Approx. 30 ms + OOT (Output Operating Time)
at 50 Hz
Approx. 27 ms + OOT (Output Operating Time)
at 60 Hz
Dropout time Approx. 20 ms + OOT (Output Operating Time)
at 50 Hz
Approx. 18 ms + OOT (Output Operating Time)
at 60 Hz
Tolerances
Threshold ≥ 0.2 V 1 % of the setting value or 0.05 V (compensated)
Time delays 1 % of the setting value or 10 ms
Operating Range of the Secondary Differential Voltage
Operating Range of the secondary differential voltage ≥ 0.1 V (compensated)
Frequency Operating Range
0.9 ≤ f/f
rated
≤ 1.1 According to specified tolerances
10 Hz ≤ f < 0.9 f
rated
1.1 f
rated
< f ≤ 80 Hz
Slightly expanded tolerances
f < 10 Hz
f > 80 Hz Active
12.27
116 Minimum secondary setting threshold = 0.2 V
Technical Data
12.27 Voltage-Differential Protection for Capacitors
1504 SIPROTEC 5, Overcurrent Protection, Manual
C53000-G5040-C017-8, Edition 07.2017