Siemens SIPROTEC 4 7UT6 Series - Reverse Power Protection

Reverse Power Protection
Setting Ranges / Increments
Reverse power P
rev
> -3000.0 W to -1.7 W
-17.00 P/SnS bis
-0.01 P/SnS
Increment 0.1 W
Increment
0.01 P/SnS
Delay Times T 0.00 s to 60.00 s
or ∞ (disabled)
Increment 0.01 s
Zeiten
Pickup Times
- Reverse Power P
rev
>
with high–accuracy measurement:
approx. 330 ms at f = 50 Hz
approx. 310 ms at f = 60 Hz
approx. 970 ms at f = 16.7 Hz
with high-speed measurement:
approx. 30 ms at f = 50 Hz
approx. 30 ms at f = 60 Hz
approx. 70 ms at f = 16.7 Hz
Dropout Times
- Reverse Power P
rev
>
with high–accuracy measurement:
approx. 330 ms at f = 50 Hz
approx. 310 ms at f = 60 Hz
approx. 970 ms at f = 16.7 Hz
with high-speed measurement:
approx. 30 ms at f = 50 Hz
approx. 30 ms at f = 60 Hz
approx. 70 ms at f = 16.7 Hz
Dropout Ratios
Reverse power P
rev
> approx. 0.6
Tolerances
Reverse power P
rev
> 0.25 % S
N
±3 % of the setting value at Q < 0.5 S
N
(S
N
: Rated apparent power,
Q: Reactive power)
Delay Times T 1 % or 10 ms
Influencing Variables for Pickup Values
Power supply direct voltage in range
0.8 ≤ U/U
HN
≤ 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 %
4.12
Technical Data
4.12 Reverse Power Protection
446 SIPROTEC 4, 7UT6x, Manual
C53000-G1176-C230-5, Edition 09.2016