Permanent magnet outdoor high voltage vacuum circuit breaker

ZW32M-12 series outdoor permanent magnet-type vacuum circuit breaker

ZW32M-12 Series Outdoor Permanent Magnet-Type Vacuum Circuit Breaker

ZW32M-12 series outdoor permanent magnet-type vacuum circuit breaker is composite by ZW32-12 Series Outdoor circuit breakers and CH-1 series line protection controller, after to increase the PT power composed outdoor intelligent switch system and recloser . The intelligent system can achieve three reclosing, overload protection, three-stage over-current protection, automatic fault isolation section, improve system reliability in order to achieve distribution network automation.

The use of environmental conditions:

1. Altitude: ≤2000m.

2. Air temperature: -40°C ~ +50°C

3. Relative humidity: ≤95%

4. Maximum wind speed

5. No fire, explosion hazard, serious filthy, chemical corrosion, as well as places of intense vibration.

Mainly Technical parameters

No	Item			Unit	Parameters
					12kV	24vK
1	Rated frequency			Hz	50/60
2	Rated voltage			kV	12kV	24kV
3	Rated insulation level	1min power frequency withstand voltage dry wet	Dry	kV	42	65
			Wet		34	50
		Rated lightning impulse withstand voltage			75	125
Current data
1	Rated current			A	630	630
2	Loop resistance with limited on rated contact pressure			µΩ	≤80	≤80
3	Rated short-circuit breaking current			kA	20	20
4	Rated short-time withstand current			kA	20	20
5	Rated short-circuit duration			S	4	4
6	Rated peak withstand current			kA	50	50
7	Rated short-circuit closed current			kA	50	50
8	Rated operating sequence				O-0.3s-CO-180s-CO

Permanent magnet outdoor high voltage vacuum circuit breaker