Product Description VS1-12(ZN63A) indoor high voltage vacuum circuit breaker is a three-phase AC 50 Hz indoor high voltage switchgear with rated voltage of 7.2-12kV. The circuit breaker meets the requirements of China's national standard gb1984-2003 "AC high voltage circuit breaker ", jb3855-1996 "3.6 ~ 40.5 kV indoor AC high voltage vacuum circuit breaker", d1403-91 "10-35 kV indoor high voltage vacuum circuit breaker ordering technical conditions" and relevant iec60694. IEC62271-100 standards, and has reliable interlocking function.
VS1-12(ZN63A) indoor high voltage vacuum circuit breaker can be operated frequently and has the ability of multiple breaking, and fast reclosing. VS1-12(ZN63A) indoor high-voltage vacuum circuit breaker is designed as a front and back separate structure, which can be used as a fixed installation unit or as a separate handcart with a chassis car.
| serial number | name | unit | data |
| 1 | nominal voltage | KV | 12 |
| 2 | rated frequency | Hz | 50 |
| 3 | Rated insulation level | Voltage withstand 1min power frequency | kA | max/alternate with 42/48 |
| Lightning shock voltage (peak) | kA | max/alternate with 75/85 |
| 4 | Rated short circuit breaking current | kA | 20 | 25 | 31.5 | 40 |
| 5 | rated current | A | 630 | 630 | 1250 | 1600 | 1250 | 1600 |
| A | 1250 | 1250 | 2000 | 2500 | 2000 | 2500 |
| | Rated short-time tolerable current (effective value) | kA | 20 | 25 | 31.5 | 40 |
| 7 | Rated peak tolerable current (peak) | kA | 50 | 63 | 80 | 100 |
| 8 | Rated short circuit closing current (peak) | | 50 | 63 | 80 | 100 |
| 9 | Rated short circuit current duration | S | 4 |
| 10 | mechanical life | next | 20000 |
| 11 | Power frequency withstand voltage of secondary circuit (1min) | V | 2000 |
| 12 | Rated sequence of operation | minute -1- Or points -t1- Or points |
