VSG -40.5kV Spring Operating Mechanism

This VSG spring operating mechanism is for VSG-40.5 vacuum circuit breaker, is a type of front indoor high voltage VCB, suitable for 3 phase AC, 50 Hz, and rated voltage of 40.5kV, and applied in places with breaking of different load and frequent operations as protection and control unit, such as industrial and mining enterprise, power plants and transformer substations.

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Working Conditions
Technical Parameters
Dimensions

Working Conditions of VSG -40.5kV Spring Operating Mechanism

1. Altitude not exceeding 2000m;
2. Ambient temperature: -15°c ~+40°c;
3. Relative humidity: monthly average not exceeding 95%, daily relative humidity not exceeding 95%;
4. Earthquake level not exceeding 8 class;
5. Without peril of fire, corrosion gas, explosion, vibration.

Technical Parameters of VSG-40.5kV Spring Operating Mechanism

Item		Unit	Data
Rated voltage		kV	40.5
Rated insulation voltage	1 min power frequency withstand voltage	kV	95
	Lightning impulse withstand voltage(peak)	kV	185
Rated frequency		Hz	50
Rated current		A	1250,1600,2000,2500,3150
Rated short-time withstand current		kV	25,31.5
Rate peak withstand current			63,80
Rate short-circuit duration		S	4
a.c. component of rate short-circuit breaking current		kA	42
Rated short-circuit making current		kA	63,80,100
Mechanical life		time	10000
Permitted abrasion thickness of moving and fixed contacts		mm	3
Arcing time		ms	≤15