Threshold supervision
Setting Ranges/Increments
Number of stages 6 (3 higher and 3 lower)
Measured Quantity U
a
, U
b
, U
c
, U
d
, U
e
, U
f
(selectable)
Setting range 2 % to 200 % Increments 1 %
Times
Pickup times approx. 25 to 55 ms at f
N
= 50/60 Hz
Dropout times approx. 70 to 145 ms at f
N
= 16.7 Hz
Dropout ratio
Dropout ratio 0.95 or 1 % or
1.05 or 1 %
Tolerances
Pickup voltages 1 % of setting value or 0.5 V
Delay times T 1 % of setting value or 10 ms
Influencing Variables for Pickup Values
Power supply direct voltage in range 0.8 ≤ U
Aux
/U
AuxN
≤ 1.15 ≤ 1 %
Temperature in range –5 °C ≤ Θ
amb
≤ 55 °C ≤ 0.5 %/10 K
Frequency in range 0.95 ≤ f/f
N
≤ 1.05 ≤ 1 %
Harmonics
- up to 10 % 3rd harmonic
- up to 10 % 5th harmonic
≤ 1 %
≤ 1 %
4.9
Technical Data
4.9 Threshold supervision
SIPROTEC 4, 7VE61 and 7VE63, Manual 211
C53000-G1176-C163-3, Edition 10.2017
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