VBI-12 Indoor High Voltage Power Distribution Equipment Vacuum Circuit Breaker 12kV Fixed Type with Solid Sealed Pole

VBI-12 Indoor High Voltage Vacuum Circuit Breaker is three-phase AC 50Hz, rated voltage of 12KV indoor device, for industrial and mining enterprises, power plants and substations as electrical equipment control and protection purposes, and for frequent operation of the place. It can be equipped with KYN28A and other mid-mounted handcart-type switchgear, and can also be equipped with XGN fixed switchgear. VBI type indoor high-voltage vacuum circuit breaker conforms to the standard GB1984 “AC high-voltage circuit breaker”, JB/T3855 “3.6 ~ 40.5kV indoor AC high-voltage vacuum circuit breaker” IEC60056 “high-voltage AC circuit breaker” standard. Meet DVr403 “10-35kV Indoor High Voltage Vacuum Circuit Breaker Ordering Technical Conditions”.

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VBI-12 Indoor High Voltage Power Distribution Equipment Vacuum Circuit Breaker 12kV Fixed Type with Solid Sealed Pole

Electrical Products

Usage Conditions
Technical Parameters
Dimensions

Applying ambient conditions of VBI-12 indoor fixed type vacuum circuit breaker

1. Ambient temperature of 12kV vacuum circuit breaker is not greater than +40 ℃, not less than -10 ℃ (allow storage at -30 ℃);

2. Altitude below 1000m;

3. Daily average daily relative humidity of not more than 95%, the monthly average of not more than 90%; saturated vapor pressure daily average of not more than 2.2 * 10-3MPa, the monthly average of not less than 1.8 * 10-2MPa, When the temperature drops sharply, it may condense;

4. earthquake intensity does not exceed 8;

5. No fire, explosion, serious pollution, chemical corrosion and severe vibration of the place.

Technical Parameters of VBI indoor fixed type vacuum circuit breaker with dolid sealed pole

NO.	Name		Unit	Data
1	Rated voltage		KV	12
2	Rated insulation level	1min Power frequency withstand voltage		42
		Rated lightning impulse withstand voltage		75
3	Rated current		A	630, 1250, 2000, 3150
4	Rated short circuit breaking current		KA	20, 25, 31.5, 40
5	Rated short-circuit opening and closing current (peak)			50, 63, 80, 100
6	Rated dynamic current (peak)			50, 63, 80, 100
7	Rated thermal stability current (rms)			20, 25, 31.5, 40
8	Rated short circuit current breaking times		times	50, 20
9	Rated thermal stability time		S	4
10	Rated operating sequence		/	O-0.3S-CO-180S-CO
11	Mechanical life		times	10000
12	Rated single capacitor bank breaking current		A	630
13	Rated back to back capacitor bank breaking current			400