Undervoltage-Controlled Reactive-Power Protection
Setting Values
Threshold value Power Q 1.00 % to 200.00 % Increments of 0.01 %
Voltage of protection
stage
3.000 to 175.000 Increments of 0.001 V
Voltage of reclosure
stage
3.000 V to 340.000 V Increments of 0.001 V
Current I
1
release threshold 1 A @ 50 and 100 Irated 0.030 A to 10.000 A Increments of 0.001 A
5 A @ 50 and 100 Irated 0.15 A to 50.00 A Increments of 0.01 A
1 A @ 1.6 Irated 0.001 A to 1.600 A Increments of 0.001 A
5 A @ 1.6 Irated 0.005 A to 8.000 A Increments of 0.001 A
Operate delay 0.00 s to 60.00 s Increments of 0.01 s
Release time delay of reclosure stage 0.00 s to 3600.00 s Increments of 0.01 s
Dropout Ratio
Protection stage
Reactive-power flow Q Approx. 0.95
Voltage Approx. 1.02
Release current Approx. 0.95
Reclosure stage
Voltage Approx. 0.98
Release current Approx. 0.95
Times
Pickup time
Approx. 55 ms + OOT
140
at 50 Hz
Approx. 45 ms + OOT at 60 Hz
Dropout time Approx. 55 ms + OOT at 50 Hz
Approx. 45 ms + OOT at 60 Hz
Tolerances
Current I
1
1 % of the setting value or 5 mA (I
rated
= 1 A)
or 25 mA (I
rated
= 5 A)
Voltage 0.5 % of the setting value or 0.05 V
Power Q 0.5 % S
rated
± 3 % of the setting value
(S
rated
: rated apparent power)
Time delays 1 % of the setting value or 10 ms
Reclosure time delay 1 % of the setting value or 10 ms
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
12.47
140
OOT (Output Operating Time): additional delay of the output medium used, for example 5 ms with fast relays
Technical Data
12.47 Undervoltage-Controlled Reactive-Power Protection
1534 SIPROTEC 5, Overcurrent Protection, Manual
C53000-G5040-C017-8, Edition 07.2017
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