Frequency Protection
Setting Ranges/Increments
Number of frequency elements 4; can be set f> or f<
Pickup Frequency f> or f< 40.00 Hz to 65.00 Hz at f
N
= 50/60 Hz
12.00 Hz to 20.00 Hz at f
N
= 16.7 Hz
Increments
0.01 Hz
Time Delays
T f1
T f2 to T f4
0.00 s to 600.00 s
0.00 s to 100.00 s
Increments 0.01
s
Increments 0.01
s
Undervoltage Blocking 10.0 V to 125.0 V and
0 V (no blocking)
Increments 0.1 V
The set times are pure delay times.
Times
f
N
= 50/60 Hz f
N
= 16.7 Hz
Pickup times f>, f<
Dropout Times f>, f<
approx. 100 ms
approx. 150 ms
approx. 400 ms
approx. 450 ms
Dropout Difference
Δf = | Pickup Value – Dropout Value |
approx. 20 mHz
Dropout Ratio
Dropout Ratio
for undervoltage blocking
approx. 1.05
Tolerances
Frequencies f>, f<
Undervoltage blocking
Time Delays T(f<, f<)
10 mHz (bei U = U
N
, f = f
N
)
15 mHz (bei U = U
N
, f = f
N
± 10 %)
1 % of setting value or 0,5 V
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 23.00 °F (–5 °C) ≤ Θ
amb
≤ 131.00 °F
(55 °C)
≤ 0.5 %/10 K
Harmonics
- up to 10 % 3rd harmonic
- up to 10 % 5th harmonic
≤ 1 %
≤ 1 %
4.6
Technical Data
4.6 Frequency Protection
208 SIPROTEC 4, 7VE61 and 7VE63, Manual
C53000-G1176-C163-3, Edition 10.2017
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