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| ZW8-12G/630-20 Outdoor use,pole mounted dry type vacuum circuit breaker
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As outdoor AC high voltage switchgear of three-phase 50HZ,the ZW8-12series outdoor AC high voltage vacuum circuit-breaker mainly serves in the urban and rural power network of 10kV to make andf break load current,coverload current and short-circuit and in the similar occasions as well. |
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Main technical parameter |
| Rated voltage |
12KV |
| Rated current |
630A |
| Rated insulation level |
1 min power frequency withstand voltage |
45KV |
| lightning impulse withstand voltge (peak value) |
75KV |
| Rated short- circuit breaking current |
12.5KA,16KA,20KA |
| Rated short-ciruit making current(peak value) |
31.5KA,40KA,50KA |
| Rated peak withstand current |
31.5KA,40KA,50KA |
| Rated short-time withstand current(4s) |
12.5KA,16KA,20KA |
| Machanical endurance |
10000 times |
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Lw3-12 seres outdoor AC high-voltage SF6 circuit breaker is the new-model one,which adopts SF6 gas as its arcextinguishing and insulation medium.It has such characters as simple constuction,more reliable performance of arcextinguishing and insulation,lower power consumption,wider range of rated paramters,lower power consumption,wider range of rated parameters,longer service life and longer non-maintenance duration.The product is applicable in the power system of three-phase AC 10KV and 50Hz to act as control and protection device in the micromidi power substation. |
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| Rated voltage |
10KV |
| Rated current |
400A,630A |
| Rated short- circuit breaking current |
6.3KA,12.5KA,16KA |
| Rated making current(peak value) |
16KA,31.5KA,40KA |
| Rated peak withstand current |
16KA,31.5KA,40KA |
| Rated short-time withstand current |
6.3KA,12.5KA,16KA |
| Short- circuit duration |
4s |
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