Time delay 0.00 s to 60.00 s Increments of 0.01 s
Pickup delay 0.00 s to 320.00 s Increments of 0.01 s
Dropout ratio 0.90 to 0.99 Increments of 0.01
V< faulty ph-gnd vltg. 0.300 V to 200.000 V Increments of 0.001 V
V> healthy ph-gnd. vltg. 0.300 V to 200.000 V Increments of 0.001 V
Dropout
The greater dropout differential (= | pickup value – dropout value |) of the following 2 criteria
applies:
Dropout differential derived from the parameter Dropout ratio
If this parameter is not available, a dropout ratio of 95 % applies for the overvoltage and of 105 % for the
undervoltage functionality.
Minimum absolute dropout differential 150 mV sec.
Times
Operate time with time delay = 0 ms
Standard filter, true RMS
Approx. 25 ms + OOT
54
at 50 Hz
Approx. 22 ms + OOT at 60 Hz
2 cycle filters Approx. 45 ms + OOT at 50 Hz
Approx. 39 ms + OOT at 60 Hz
Dropout time
Standard filter, true RMS Approx. 20 ms + OOT at 50 Hz
Approx. 17 ms + OOT at 60 Hz
2 cycle filters Approx. 31 ms + OOT at 50 Hz
Approx. 27 ms + OOT at 60 Hz
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 ≤ 90 Hz
Slightly expanded tolerances
f < 10 Hz
f > 90 Hz
Active
Tolerances
Voltages
0.5 % of the setting value or 0.05 V
Time delays 1 % of the setting value or 10 ms
54
OOT (Output Operating Time) additional delay of the output medium used, see chapter 11.1.4 Relay Outputs
Technical Data
11.19 Voltage Protection
960 SIPROTEC 5, Low-Impedance Busbar Protection, Manual
C53000-G5040-C019-C, Edition 04.2021
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