Product Overview:
The ZW32F-12 type outdoor AC high-voltage circuit breaker (hereinafter referred to as the circuit breaker) is an outdoor distribution equipment with a rated voltage of 12 kV and three-phase AC of 50 Hz. It is designed to break and close load current, overload current, and short-circuit current in power systems. This circuit breaker is suitable for protection and control in power distribution systems of substations, industrial and mining enterprises, and rural power grids with frequent operations.
Structural Features:
Installation Method:
Applicable Environmental Conditions:
Advanced Features:
The ZW32F-12 type outdoor AC high-voltage circuit breaker is a robust and reliable solution for modern power distribution needs. Its compact and maintenance-free design, combined with advanced protection features, makes it an ideal choice for substations, industrial settings, and rural power grids.
| Description | Unit | Data | ||||
|---|---|---|---|---|---|---|
| Rated voltage | kV | 12 | ||||
| Rated frequency | Hz | 50 | ||||
| Rated current | A | 630 | 1250 | |||
| Rated short circuit breaking current | kA | 20 | 25 | 31.5 | ||
| Rated peak withstand current | kA | 50 | ||||
| Rated short time withstand current (4s) | kA | 20 | ||||
| Rated short circuit making current (peak) | kA | 50 | ||||
| Mechanical endurance | times | 10000 | ||||
| Rated short circuit breaking current capacity | times | ≥30 | ||||
| Phase to phase/earth, between open contacts | kV | 42 | 48 | |||
| Lightning impulse withstand voltage (peak) | kV | 75 | 85 | |||
| Power frequency withstand voltage on secondary circuit (1min) | V | 2 | ||||
It is suitable for protection and control in power distribution system of substations and industrial and mining enterprises and frequent operation places in rural power grids.
The working principle of vacuum circuit breaker is mainly based on the characteristics of plasma rapidly diffusing and extinguishing arc when current flows through zero point in high vacuum. When the current in the circuit exceeds a preset threshold, the vacuum circuit breaker will cut the circuit to prevent the electrical equipment from being affected by problems such as overload and short circuit. When the current in the circuit drops below the safe value, the vacuum circuit breaker will automatically close to maintain the normal operation of the circuit.
