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High voltage vacuum circuit breaker support type ZW32-40.5
The pole switch with the integration of primary and secondary equipment ZW32-40.5 (measurement and control device, comprehensive fault isolation) (hereinafter referred to as the “switch”) is an outdoor distribution equipment used at a voltage of 40.5 kV, three-phase alternating current 50 Hz.
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Product Description
The pole switch with the integration of primary and secondary equipment ZW32-40.5 (measurement and control device, comprehensive fault isolation) (hereinafter referred to as the “switch”) is an outdoor distribution equipment used at a voltage of 40.5 kV, three-phase alternating current 50 Hz. It is mainly used for interrupting overload current, short circuit current, and as an automatic line fault detection, evaluation and treatment device. Made in an integrated design that combines the switching device itself, the power supply unit, the measuring unit and the control unit in a single housing. Characterized by ease of installation and ease of maintenance, it is ideal equipment for the implementation of automation systems for distribution line feeders. The circuit breaker is equipped with combined current and voltage sensors with unified standardized parameters, which are characterized by a wide measurement range, high measurement accuracy and high reliability, have a full set of analog values and allow you to accurately determine various types of faults on the line.
| Name | Unit change | Meaning |
| Rated voltage | kV | 40.5 |
| Power frequency test voltage for 1 min | kV | 95 (between phases / phase-ground), 95 (open contact) |
| Rated lightning impulse voltage (peak) | kV | 185 (between phases / phase-ground), 185 (open contact) |
| Rated current | A | 630 / 1250 |
| Rated short circuit breaking current | kA | 20, 25 |
| Number of short circuit breaking operations | cycles | ≥ 30 |
| Rated short-circuit inrush current (peak) | kA | 50, 63 |
| Rated peak current withstand current | kA | 50, 63 |
| Rated short-time current | kA | 20, 25 |
| Short circuit current duration | with | 4 |
| Nominal sequence of operations | — | O-0.3c-CO-180c-CO |
| Mechanical wear resistance | cycles | ≥ 10,000 |
| Rated operating voltage | B | DC 220 |
| Energy storage time at rated voltage | with | < 10 |
| Partial discharges | pCL | ≤ 20 (at 14.4 kV) |
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