Technical Data
4.8 Voltage Protection 27, 59
SIPROTEC, 7SJ62/64, Manual
C53000-G1140-C207-2, Release date 01.2008
498
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
Pickup Voltage Limits
3 % of setting value or 1 V
Delay times T
1 % of setting value or 10 ms
Power supply direct voltage in range 0.8
≤
V
PS
/V
PSNom
≤
1.15
1 %
Temperature in range 23.00 °F (-5 °C)
≤
Θ
amb
≤
131.00 °F (55 °C) 0.5 %/10 K
Frequency in range 0.95
≤
f/f
Nom
≤
1.05
1 %
Frequency outside range f
Nom
±
5 Hz
Increased tolerances, tending to
overfunction with undervoltage protec-
tion
Harmonics
- up to 10 % 3rd harmonic
- up to 10 % 5th harmonic
1 %
1 %
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