SEG Electronics GmbH Technical Manual WIC1
28 DOK-TD-WIC1E, Rev. M
5.7 Technical Data
5.7.1 Common Data
Frequency: 45 Hz to 65 Hz
Nominal: 50/60 Hz
Thermal load capacity: Permanently: 2.5 x highest rated CT current
1s 25 kA CT primary current
3s 20 kA CT primary current
Dynamic load capacity: 62.5 kA CT primary current
Disengaging ratio: 95% of the pickup value
5.7.2 Environmental Conditions
Temperature range when stored: -40°C to +85°C
Temperature range when in operation: -40°C to +85°C
Max. altitude for operation: 2000 m (above sea-level)
5.7.3 Accuracy
Tripping times: DMT: ±1% of the setting value absolutely ±10 ms
IMT: dependent on the current level and chosen
characteristic, absolutely ±10 ms
Earth fault element*: ≤ 5% of the setting value in the range of IE> x IS
≤ 5% of the IS in the range of IE> x IS
*=Option, only available in device types that offer earth current protection.
Measuring accuracy for phase current at 0°C to +50°C
with CT WE1, WE2, W3, W4, W5 or W6: I
Ph
> Is: ≤ 5% of I
Ph
with CT W1: 7.2 A ≤ I
Ph
< 10 A: ≤ 12.5% of I
Ph
10 A ≤ I
Ph
< 14.4 A: ≤ 7.5% of I
Ph
I
Ph
≥ 14.4 A: ≤ 5% of I
Ph
with CT W2: 14.4 A ≤ I
Ph
< 20 A: ≤ 12.5% of I
Ph
20 A ≤ I
Ph
< 28,8 A: ≤ 7.5% of I
Ph
I
Ph
≥ 28.8 A: ≤ 5% of I
Ph
Measuring accuracy for phase current at -40°C to +85°C
Additional temperature influence: ≤ 2.5 % of I
Ph
Measuring accuracy for earth current ≤ 2x Accuracy of phase current
Applying Accuracy Measuring Range
To Next Page
Loading...
Need help?
General
