| ZW8 Vacuum Circuit Breaker |
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ZW8-12-630-20 |
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ZW8-12 |
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ZW1-12 |
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| ZW8-12 Series vacuum breaker is three-phase AC 50Hz high voltage indoor switchgear with rated voltage 12kV. It is mainly used to make and break load current, overload current and short-circuit current of mini power system. The whole structure of the products are three phases in one cabinet, and three-phase vacuum arc-chutes were placed in metal cabinet. The operating mechanism of the products is CT23 type spring energy storing mechanism, which can be classified to electrical type and manual type. |
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Order |
Items |
Unit |
6.3kA |
12.5kA |
20kA |
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1 |
Rated voltage |
kV |
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12 |
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2 |
High operating voltage |
kV |
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12 |
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3 |
Rated current |
A |
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630 |
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4 |
Rated short-circuit make and break current |
kA |
6.3 |
12.5 |
20 |
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5 |
Rated short-circuit open-close current(peak) |
kA |
16 |
31.5 |
50 |
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6 |
Rated peak endurable current |
kA |
16 |
31.5 |
50 |
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7 |
Industrial endurable voltage |
kV |
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42 |
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8 |
Impulse endurable voltage |
kV |
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75 |
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9 |
Mechanical life |
Times |
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10000 |
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10 |
Average opening speed |
m/s |
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0.8-1.4 |
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11 |
Average closing speed |
m/s |
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0.5-0.9 |
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12 |
Closing time |
S |
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≤0.1 |
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13 |
Every phase resistance of main circuit |
μ Φ |
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≤200 | | | |
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