Zw7-40.5f/1250 40.5kv Vacuum Circuit Breaker 40.5 Outdoor

Product Description

The main function:
1. Vacuum arc extinguishing, strong breaking capacity, long electrical life and 10,000 mechanical life;
2. Simple structure, maintenance-free, long maintenance period;
3. Good insulation performance and strong anti-pollution ability;
4. It can be equipped with spring or electromagnetic operating mechanism, with reliable mechanical performance and frequent operation; no fire and explosion hazard;
5. Built-in current transformer, the lecturer's precision reaches 0.2, which can realize three-phase interactive protection;
6. With condensation controller, it can keep the circuit breaker running reliably under certain temperature and humidity.

Product Parameters

NO	Item			Unit	Value
1	Rated voltage			KV	40.5
2	Rated insulation level	Power frequency withstand voltage	Dry test		95
			Wet test		80
		Lightning impulse withstand voltage (peak)			185
3	Rated current			A	1250,1600,2000
4	Rated short-circuit breaking current			KA	20,25,31.5
5	Rated operation sequence				0-0.3s-combination-180s-combination
6	Rated short circuit current breaking times			times	12
7	Rated short circuit closing current(peak)			KA	50,63,80
8	Rated peak withstand current
9	Rated short-time withstand current			KA	20,25,31.5
10	Rated short circuit continuous current			S	4
11	Average opening speed			m/s	1.5±0.2
12	Average closing speed				0.7±0.2
13	Contact closing bounce time			S	≤2
14	Three-phase combined (minute) gate synchronous time difference				≤2
15	Closing time				150
16	Opening time				≤60
17	Mechanical life			times	10000
18	Rated operating voltage and auxiliary circuit rated voltage			V	DC220,110,24
					AC220,110,24
19	DC resistance per phase circuit(without transfomer)			μΩ	≤100
20	Dynamic and static contacts allow wear thickness			mm	3
21	weight			kg	800

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