| parameter name |
unit |
numerical value |
| rated voltage |
kV |
forty point five |
| Rated short-time power frequency withstand voltage (1min) (dry/wet) |
95/85 |
| Rated lightning impulse withstand voltage (peak) |
one hundred and eighty-five |
| rated frequency |
Hz |
fifty |
| rated current |
A |
1250, 1600 |
| Rated short-circuit breaking current |
kA |
twenty-five |
thirty-one point five |
| Rated short-time withstand current |
twenty-five |
thirty-one point five |
| Rated peak withstand current |
sixty-three |
eighty |
| Rated short-circuit closing current |
sixty-three |
eighty |
| Rated earth fault breaking current for different phases |
twenty-one point seven |
| Rated short-circuit duration |
S |
four |
| Rated short-circuit current breaking times |
time |
twenty |
| mechanical life |
ten thousand |
| Allowable wear thickness of contacts |
mm |
three |
| Rated operating sequence |
|
Min-0.3s - combined and separated |
| -180s combined and separated |