Siemens 7SJ82, Manual

Page: 1482 / 1638

Tolerances
Zero-sequence harmonic current 3I0harm. -3I0harm. via sensitive current transformer:
1 % of the setting value or 0.1 mA (I
rated
= 1.6 A)
or 0.5 mA (I
rated
= 8 A, f
rated
± 10 %)
-3I0harm. via protection-class current transformers:
1 % of the setting value or 5 mA (I
rated
= 1 A)
or 25 mA (I
rated
= 5 A, f
rated
± 10 %)
V0 fundamental-component value 1 % of the setting value or 0.05 V
Direction-calculation angle error of the 3rd, 5th, or
7th harmonic phasor ≤ 1° at 3I0harm. > 5 mA
≤ 2° at 3I0harm. ≤ 5 mA
Non-Directional V0 Stage with Zero-Sequence Voltage/Residual Voltage
Setting Values
Threshold value 100
0.300 V to 200.000 V Increments of 0.001 V
Time delay 0.00 s to 60.00 s Increments of 0.01 s
Pickup delay 0.00 s to 60.00 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 101 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. 16.6 ms + OOT at 60 Hz
2 cycle filters Approx. 31.06 ms + OOT at 50 Hz
Approx. 27.06 ms + OOT at 60 Hz
Tolerances
Voltages 0.5 % of the setting value or 0.05 V
Time delays 1 % of the setting value or 10 ms
12.18.7
100 If you have selected the method of measurement = RMS value, do not set the threshold value under 10 V.
101 OOT (Output Operating Time): additional delay of the output medium used, see Chapter 12.1.4 Relay Outputs
Technical Data
12.18 Sensitive Ground-Fault Detection
1482 SIPROTEC 5, Overcurrent Protection, Manual
C53000-G5040-C017-8, Edition 07.2017