Customization: | Available |
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Breaking Capacity: | High Voltage Circuit Breakers |
Operation: | Manual Type |
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Technical specification | ||||
No. | Item | Unit | Data | |
1 | Rated frequency | Hz | 50 | |
2 | Rated voltage | kV | 12 | |
3 | Rated current | A | 630/1250 | |
4 | Rated short-time power frequency withstand voltage | Interphase, to earth(wet) | kV/min | 42/1 |
Interphase, to earth(dry) | 48/1 | |||
Break(dry) | 34/1 | |||
Secondary circuit to earth | 2/1 | |||
5 | Rated lightning impulse withstand voltage | Interphase, to earth | kV | 75 |
Break | 85 | |||
6 | Rated short-circuit breaking current | kA | 20/25 | |
7 | Rated short-circuit making current(peak) | 50/63 | ||
8 | Rated short-time withstand current and duration | kA/s | (20/25)/4 | |
9 | Rated peak withstand current | kA | 50/63 | |
10 | Rated short-circuit breaking current breaking times | Times | 30 | |
11 | Rated operating voltage and rated voltage of auxiliary circuit | V | AC/DC220,DC48,DC24 | |
12 | Main circuit resistance | Without isolation | μΩ | ≤80 |
With isolation | ≤120 | |||
13 | Mechanical life | Times | 10000 | |
Note: If the altitude is over 1000m, the rated insulation level should be modified as appropriate. |