outdoor AC vacuum circuit breaker 12kv

Outdoor AC vacuum circuit breaker is used to make and break load current, overload current and short-circuit current in 12/24kV,50/60Hz power system. It is applicable for substations, industry and mining, urban and rural electricity power networks, especially for occasions with frequent operation and automatic power distribution network.

General:

The product accords with the standard of IEC622 71-100 & GB1984: AC high voltage circuit breaker, IEC60694 & GB/T11022: HV General technical requirement of switch and control apparatus.

Service Environment

Altitude:<2000mm;
Ambient temperature:-40C~+45C
Wind speed: 34m/s;
Earthquake intensity:<8 degree;
Ambient pollution: IV:
Ice thickNess:10mm;
Applicable occasions should be free from inflammables, explosives,corrosives and severe vibrations.

Key Feature

The circuit breaker adopts three-phase pillar structure
Operating mechanism adopts miniaturized spring operating mechanism
The circuit breaker can be equipped with a two-phase or three-phase current transformer

Technical Data

Name			Unit	Data
				12kV
Rated voltage			kV	12
Rated current			A	630、1250
Rated insulating level	1min. PF withstand voltage	dry	kV	42(across open contacts:48)
		wet		34
	Lightning impulse withstand voltage(peak)		kV	75(across open contacts:85)
Rated short-circuit breaking current			kA	20、25
Rated short-circuit making current (peak)			kA	50、63
Rated peak withstand current			kA	50、63
4s rated short-time withstand current			kA	20、25
Rated operating sequence				O-0.3s-CO-180s-CO
Breaking times of rated short-circuit breaking current			times	30
Mechanical duration			times	10000
Rated voltage of energy storage motor			V	DC or AC220、DC110、48、24
Rated operation voltage			V	DC or AC220、DC110、48、24
Abrasions thickNess of contacts			mm	3
Rated current of over-current release			A	5
Current transformer ratio				200/5.400/5.600/5 (Protection degree: III class, Class:0.5)