FZRN21-40.5 Indoor High Voltage Air Load Break Switch

Product Detail

Environmental conditions

1. Altitude: 1000m;

2. Ambient temperature: -40 ~+40℃;

3. Relative humidity: daily average 95%, monthly average 90%;

4. Earthquake intensity: 8 degree;

5. Pollution grade: II degree.

Technical parameters

NO.	Items	Unit	Value
1	Rated voltage	kV	40.5
2	Rated frequency	Hz	50
3	Maximum rated current of fuse	A	63
4	1min power frequency withstand voltage	kV	95/110
5	Lightning impulse withstand voltage	kV	185/215
6	Rated peak withstand current	kA	50
7	4S rated short time withstand current	kA	20
8	Rated active load breaking current	A	1250
9	Rated closed loop breaking current	A	1250
10	Rated cable charging breaking current	kA	21
11	Rated short circuit breaking current	kA	31.5
12	Rated short circuit making current	kA	80(expected peak value)
13	Mechanical life	times	10000