This circuit breaker is a three-phase AC 50Hz outdoor high-voltage switchgear. It is mainly used in 35-40.5kV systems of rural power grids and urban power grids. It is used to divide and combine load currents, overload currents and short-circuit currents. Can also be used in other similar places.
1. Using vacuum arc extinguishing, it has strong breaking capacity. Long electrical life and mechanical life of 10,000 times.
2. Simple structure, maintenance-free, long maintenance cycle
3. Good insulation performance. Strong anti-pollution ability.
4. It can be equipped with spring or electromagnetic operating mechanism, which has reliable mechanical performance and can be operated frequently: no fire and explosion hazards.
5. Built-in current transformer, the accuracy reaches 0.2 level, which can realize three-phase interactive protection.
6. A built-in condensation controller can keep the circuit breaker operating reliably at a certain temperature and humidity.
1. The upper limit of ambient air temperature is +40℃: the lower limit is 30℃.
2. Altitude ≤ 2000m (if the altitude needs to be increased, the rated insulation level will be increased accordingly).
3. Wind pressure does not exceed 700Pa (equivalent to wind speed of 34mn/s)
4. Amplitude: earthquake intensity 8 degrees
5. Pollution level: Level III
6. Maximum daily temperature difference: no more than 25℃
