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ZW37- outdoor ac high voltage vacuum circuit breaker

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ZW37- outdoor ac high voltage vacuum circuit breaker

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Product description

Parameters

An overview of the

Zw37-40.5 outdoor ac vacuum circuit breaker is an outdoor high-voltage switchgear with rated voltage of 40.5kv and three-phase ac of 50Hz.
It is mainly used for load current, overload current and short circuit current of power system.
It is suitable for protection and control of substation, industrial and mining enterprises, urban and rural networks, especially for the sites with frequent operation and urban network automatic distribution network.
The product meets the following standards:
GBT1984 high voltage ac circuit breaker;
GB/T11022 high voltage switchgear and control equipment standard Shared technology
Requirements;
DI402 ac high-voltage circuit breaker order technical conditions.

Model and meaning

Operating environmental conditions

1. Altitude not exceeding 1000m.
2. Ambient temperature: -35℃~+40℃.
3. Relative humidity: monthly average does not exceed 90%;
The average daily relative humidity is no more than 95%;
4, the intensity of the earthquake does not exceed 8 degrees.
5, environmental tolerance values: Ⅳ level.
6. Icing thickness: 20mm.
7. Pressure not exceeding 700Pa (equivalent to wind speed of 34m/s).
8. The installation site shall be a place free from inflammable, explosive, chemical corrosive substances and frequent violent vibration.

Main technical parameters

The serial number	name		unit	parameter
1	The rated voltage		kV	40.5
2	Rated current		A	630，1250，1600，2000
3	Rated short circuit breaking current		kA	20	25	31.5
4	Rated short circuit shut-off current (peak)		kA	50	63	80
5	Rated short - term withstand current		kA	20	25	31.5
6	Rated peak withstand current		kA	50	63	80
7	Rated short circuit duration		S	4
8	Rated insulation level	Withstand voltage of 1min power frequency	kV	95
		Lightning shock withstand voltage (peak)		185
9	Rated operating sequence			分—0.3s—合分—180s—合分
10	Rated number of short circuit breaking current		次	20
11	Number of mechanical life		次	10000
12	Rated operating voltage		V	220（DC、AC）