Liyond Indoor 33kV 35kV 36kV 40.5kV VSG Mechanism Side Type M.V. Vacuum Circuit Breaker

VSG/C-40.5 Series Side Mounted Vacuum Circuit Breaker is a new type of three phase 50Hz according to the unique design concept and combined with the market demand and development, the rated voltage of indoor switchgear 40.5kV, it can be provided to industrial and mining enterprises, power plant and substation as the control and protection of electrical equipment, and is suitable for frequent operation.

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Liyond Indoor 33kV 35kV 36kV 40.5kV VSG Mechanism Side Type M.V. Vacuum Circuit Breaker

Electrical Products

Usage Conditions
Technical Parameters
Dimensions

Applying ambient conditions of VSG/C-40.5 Series Side Mounted Vacuum Circuit Breaker

1. Ambient temperature: -10 °C ~ +40 °C (It allows storage and transportation at -30 degrees centigrade);
2. Ambient humidity: the average humidity of a day should be no more than 95%. The average humidity of a month should be no more than 90%
3. Saturated vapor pressure: the average pressure of a day should be no more than 2.2kPa; the average pressure of a month should be no more than 1 .8kPa;
4. Altitude: < 1500m;
5. Earthquake intensity:≤8 degree;
6. The 33kV circuit breaker should be installed in the place without fire, explosion, serious filth, and chemical erosion and violent vibration.

Technical parameters of VSG/C-40.5 Series Side Mounted Vacuum Circuit Breaker

No.	Item		Unit	Data
1	Rated voltage		kV	40.5
2	Rated insulation level	1 min power frequency withstand voltage (RMS)	kV	95
		Lightning impulse withstand voltage (peak)	kV	185
3	Rated frequency		Hz	50
4	Rated current		A	1250/1600/2000
5	4S rated short-time withstand current		kA	25	31.5
6	Rated peak withstand current		kA	63	80
7	Rated short circuit breaking current		kA	25	31.5
8	Rated short circuit closing current		kA	63	80
9	Rated operating sequence			O-0.3s-CO- 180s-CO
10	Rated short circuit breaking current breaking times		times	20
11	Breaking current of rated capacitor bank		A	630
12	Mechanical Life		times	20000

After adjusting the circuit breaker, the mechanical characteristic parameters are shown below

No.	Item	Unit	Data
1	Contact opening distance	mm	18±1
2	Contact stroke	mm	5±1
3	Average closing speed	m/s	0.8±0.2
4	Average breaking speed	m/s	1.8±0.2
5	Breaking time(rated voltage)	ms	20-50
6	Closing time(rated voltage)	ms	≤100
7	Contact closing trip time	ms/M	≤3
8	Three phase switching off synchronism	ms/M	≤2
9	The movable and static contact allow the accumulated thickness of friction	mm	3
10	Dominant loop resistance	μΩ	≤60