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High voltage vacuum circuit breaker ZW32-33F
The ZW32-33F series outdoor high voltage vacuum circuit breaker is designed for use in 50Hz AC three-phase electrical systems with a rated voltage of 33kV for switching load current, overload current and short-circuit current.
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Product Description
The ZW32-33F series outdoor high voltage vacuum circuit breaker is designed for use in 50Hz AC three-phase electrical systems with a rated voltage of 33kV for switching load current, overload current and short-circuit current. This circuit breaker can be equipped with an automatic reclosing controller, which recognizes the current characteristics and performs multiple automatic reclosing. The switch has a built-in power supply from a voltage transformer (VT) and supports the output of voltage and current signals, which allows it to be manufactured in an intelligent design. The equipment receives power from an electronic voltage transformer and has comprehensive three-stage protection: with a time delay for current, with a time delay for inrush current and against short circuit.
| No. | Parameter name | Unit change | Meaning |
| 1 | Rated voltage | kV | 38 |
| 2 | Rated current | A | 630/1250/1600 |
| 3 | Rated frequency | Hz | 50 or 60 |
| 4 | One minute power frequency withstand voltage (rain/dry) | kV | 80/95 |
| 5 | Lightning impulse withstand voltage (peak value) | kV | 185 |
| 6 | Rated short circuit breaking current | kA | 12.5/31.5 |
| 7 | Rated short-circuit making current (peak value) | kA | 63/80 |
| 8 | Rated electrodynamic withstand current (peak value) | kA | 63/80 |
| 9 | Thermal current for 4 seconds | kA | 12.5/31.5 |
| 10 | Nominal operating cycle | — | 0-0.1 s-C0-3 s-C0-6 s-C0-60 s recovery |
| 11 | Number of trips of rated short circuit current | times | 30 |
| 12 | Mechanical life | cycles | 20000 |
| 13 | Smart Drive Control Circuit Voltage | B | DC220 |
| 14 | One-minute power frequency withstand voltage of secondary circuits | kV | 2 |
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