Outdoor Vacuum Circuit Breaker

The outdoor vacuum circuit breaker manufactured by DAHU ELECTRIC is an outdoor distribution unit of rated voltage 40.5 kV and frequency 50 Hz, which is applicable to the feeder side of substation and the industrial and mining enterprise which need general protection, control and frequent operation of switch.

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Product Description

The main body of the circuit breaker features vacuum extinction, simple structure, powerful interrupting capability and long service life. The pole is made of epoxy resin / silicone rubber composite insulator,no oil and sf6 gas, this solid insulated Vacuum Circuit Breaker is designed envirionmentally friendly.

After using composite insulation structure, outdoor vacuum circuit breaker meets the requirements of air distance and creep distance under normal operating conditions And effectively reduce the volume of the circuit breaker, the main conductive loop vacuum interrupter and the dynamic and static conductive connection are installed in the insulating cylinder, so that the phase is only 300mm. The main circuit electrical connections are all fixed connections with high reliability.

Product Details

Modular Mechanism

Modular mechanism design, highly standardized structure;

Mechanism is easy to assemble / disassemble and easy to maintain;

High reliability with less number of parts

Integrated charging handle, makes operation convenient and easy

Pot-type Pole

Environment friendly insulating material, PA66 provides light weight, high dielectric performance;

Recyclable and easy disposal after product life cycle;

Cost effective and reliable;

Vacuum Circuit Breaker

Fully meets the requirements of IEC and GB standards;

Complete interlocking, prevent misoperation, and provide safety in operation;

Modular design, shortened delivery time;

Small opening rebound and excellent performance;

Performance Advantage

The product is equipped with a bistable permanent magnet operating mechanism, the mechanism is equipped with a permanent magnet, by the permanent magnet to provide a holding force, so that the switch is maintained in the open and closed state, compared with the conventional spring operating mechanism, the number of mechanical parts is reduced, the mechanical transmission chain is shortened, so that the reliability of the switch is greatly improved, the mechanical life is greatly increased.

Main Technical Specification

Technical Parameters
No.	Item			Unit	Value
1	Rated voltage			kV	40.5
2	Rated insulation level (Sea level: 1000m)	1 min power frequency withstand voltage	Dry test		95
			Wet test (earth outside insulation)		85
		Lightning impulse withstand voltage(peak) 1.2/50us			200
3	Rated current			A	1600/2500
4	Rated frequency			Hz	50/60
5	Rated short circuit breaking current			kA	31.5
6	Rated operation sequence			O-0.3s-CO-180s- CO-180s-C
7	Rated short circuit breaking current breaking times			times	20
8	Rated short circuit closing current(peak)			kA	80
9	Rated peak withstand current				50
10	Rated short time withstand current				31.5
11	Fully breaking time			S	<0.125
12	Rated short circuit duration				4
13	Mechanical life			times	10000
14	Rated operating voltage and auxiliary circuit rated voltage			V	110/220

Mechanical characteristic parameters of circuit breaker

No.	Item	Unit	Value
1	Contact clearance	mm	18±1
2	Contact overtravel	mm	6±1
3	Opening speed	M/s	1.6±0.2
4	Closing speed	M/s	0.8±0.2
5	Simultaneity of three phase opening and closing	ms	≤2
6	Phase distance	mm	680±2
7	Contact closing bounce time	ms	≤3
8	Each phase conductive circuit resistance	μΩ	≤60
9	Closing time	ms	25~60
10	Opening time	ms	20~50
11	Rated power frequency of energy storage motor	W	110
12	Rated voltage of energy storae motor	V	220
13	Max./Min.Motor voltage		120%/80%
14	Rated closing operating voltage		220
15	Max./Min. Closing operating voltage		120%/80%
16	Rated opening operating voltage		220
17	Max./Min. Opening operating voltage		120%/65%

Technical parameters of operating mechanism
No.	Item		Unit	Value
1	Rated operating voltage	Opening tripper	V	AC220
		Closing tripper		AC220
2	Rated resistance	Opening tripper	Ω	56
		Closing tripper		56
3	Rated output power frequency	Opening tripper	W	320
		Closing tripper
4	Energy storage motor power frequency			110
5	Rated voltage of motor energy storage		V	AC220
6	Energy storage time		S	≤10