Siemens 7SK80 - Page 377

Technical Data
4.7 Voltage Protection 27, 59
SIPROTEC, 7SK80, Manual
E50417-G1140-C344-A5, Release date 11.2012
377
Times
Tolerances
Influencing Variables
Pickup Times
- Undervoltage 27-1, 27-2, 27-1 V
1
, 27-2 V
1
- Overvoltage 59-1, 59-2
- Overvoltage 59-1 V
1
, 59-2 V
1
, 59-1 V
2
, 59-2 V
2
Approx. 50 ms
Approx. 50 ms
Approx. 60 ms
Dropout Times
- Undervoltage 27-1, 27-2, 27-1 V
1
, 27-2 V
1
- Overvoltage 59-1, 59-2
- Overvoltage 59-1 V
1
, 59-2 V
1
, 59-1 V
2
, 59-2 V
2
Approx. 50 ms
Approx. 50 ms
Approx. 60 ms
Voltage limit values 3 % of setting value or 1 V
Delay times T 1 % of setting value or 10 ms
Auxiliary DC voltage in range 0.8 ≤ V
Aux
/V
AuxNom
≤ 1.15 1 %
Temperature in range –5 °C (41 °F) ≤ Θ
amb
≤ 55 °C (131 °F) 0.5 %/10 K
Frequency in range of 25 Hz – 70 Hz
Frequency in range of 0.95 ≤ f/f
Nom
≤ 1.05 (f
Nom
= 50 Hz or 60
Hz)
1%
Frequency outside range 0.95 ≤ f/f
Nom
≤ 1.05 Increased tolerances
Harmonics
- up to 10 % 3rd harmonic
- up to 10 % 5th harmonic
1%
1%