Vacuum Circuit Break Suppliers and Manufacturers

VN1-40.5E medium-voltage AC vacuum circuit breaker is a new product designed by our company. The main circuit is with the solid insulated structure and uses the advanced epoxy resin sealed technology. Firstly it assembles a integrated sealed pole column with the vacuum interrupter, the main circuit, the insulated support and so on, which enhances the environment endurance of the vacuum circuit breaker. 1. The main circuit section and operating mechanism section is upper and lower arrangement, which optimize the electric field distribution, increase the insulated reliability, also reduce the circuit breaker depth direction size and reduce the matched switchgear depth greatly. 2. The live part of main circuit is cast in the epoxy resin cylinder, which make the interrupter be exempt from the environmental effect and the external mechanical force injury, also cause the circuit breaker no arc-over between phases and on the interrupter's surface and enhance the insulation of circuit breaker. 3.Current carries are fixed reliably in the position by the epoxy resin, do not need the extra fastener, reduce the number of accessories used for assembling circuit breaker pole columns, reduce the installation error and enhance the reliability of installing the circuit breaker. 4. As a result of using the sealed technology, the circuit breaker volume reduces greatly. The matched cabinet width is only 1200mm, heighten 2400mm, depth 2600mm. 5. The VN1 circuit breaker is based on the self-supporting structure of bottom plate, has overcome the primary contacts linking due to the circuit breaker submersion and also transport conveniently.

1. General VS1 12KV vacuum circuit breaker VCB HVD1-12(VS1-12) type indoor AC HV vacuum circuit breaker VCB (hereinafter referred to as circuit breaker) are suitable for 12kV air-insulated indoor switchgears, used as protection and control unit of power equipment of industrial& mining enterprise. Due to the super excellence, it is especially for location where requires the frequent operation of rated working current or multi breaking short circuit current. The circuit breaker adopts the integrated design of operating mechanism and circuit breaker body, servers as not only fixed installation, but also the handcart unit through equipping with a special propelling mechanism. 2. Service conditions 3.1 Environment temperature:-15degree~+40degree; 3.2 Environment humidity: Daily average relative humidity:

1. General HVD32 ZW32 This vacuum circuit breaker VCB is three-phase AC 50Hz, rated voltage 12 kV outdoor high voltage switch equipment. It is mainly used to opening(closing) load current, overload current and short-circuit current. It is suitable to protect or control the city or village electrical power distribution system. 2 . Main technical parameter Rated voltage: 12 kv 1 minute rated power frequency withstand voltage: Phase to Phase, to Ground 42 kv / Fracture 48 kv Rated current: 630A / 1250A Rated short circuit breaking current: 12.5KA, 16KA, 20KA / 25KA Rated short-circuit current (peak): 31.5KA, 40KA, 50KA / 63KA Rated peak withstand current: 31.5KA, 40KA, 50KA / 63KA 4s rated short time withstand current: 12.5KA, 16KA, 20KA / 25KA Rated operating sequence: O-0.3s-CO-180s-CO(Electric operation) Closing time: 30-60 ms Opening time: 20-40 ms Rated short circuit breaking current breaking times: 30 times Mechanical life: 10,000 times Secondary circuit 1 minute power frequency withstand voltage: 2000 v Energy storage motor rated power: 40 w Energy storage motor rated voltage V: DC220/110 Rated closing operation voltage v: DC220/110, AC220/110 Rated switching operation voltage v: DC220/110, AC220/110 Electric energy storage time: =8 s

1.General HVD85 ZN85 33kv 36KV indoor vacuum circuit breaker VCB is suitable for three-phase AC power system of 50Hz and 36kV, used to make and break the load current, overload current and fault current in industrial and mining enterprises, power plants and transformer substations, meanwhile, it is suitable for the occasion where the frequent operation is required. 2. Service conditions 2.1The ambient air temperature should be -15?~40?, the daily average temperature should not exceed 35?. 2.2 Daily mean relative humidity should not exceed 95%, and the daily mean vapor pressure should not exceed 2.2kPa; the monthly mean relative humidity should not be higher than 90%, and the monthly mean vapor pressure should not exceed 1.8kPa. 2.3 Altitude: Not exceed 1,000m. 2.4 The ambient air should be free from the dust, smoke, corrosive and flammable gas, steam, salt fog, et… Main specifications and technical parameters Rated voltage: 33KV 36kv Power frequency withstand voltage: 95 kv Lighting impulse withstand voltage: 185 kv Rated current: 1250A, 1600A, 2000A Rated short-time withstand current: 25KA, 31.5KA Rated peak value withstand current: 63KA, 80KA Rated short-circuit duration: 4 s Rated short-circuit breaking current: 25KA, 31.5KA Rated short-circuit making current: 63KA, 80KA Rated operation sequence: O-0.3s-CO-180s-CO Breaking time:

1. Introduction HVD7 33KV 36kv outdoor HV AC vacuum circuit breaker VCB has many visual advantages like reasonable design, fashionable appearance, high safety and reliability, simple maintenance, long electric life. It is the ideal upgraded products of 35KV outdoor oil circuit breakers. HVD7-40.5 vacuum circuit breaker is applicable for three-phase power system of AC 50HZ.It is used to make and break the load current ,overload current and short-circuit current. 2. Applicable environment 3.1The ambient temperature should be -30degree~ +40degree(-40degree in the frosty area); 3.2Altitude should not exceed 2000m(over 2000m is plateau type); 3.3The wind pressure should not exceed 700Pa(equal to wind speed 34m/s); 3.4Air pollution degree: 3,that of antifouling type:4; 3.5The installation site should be free from the fire, explosion, chemical corrosion and serious vibration. 1. Main technical parameters Rated voltage: 33kv 36KV 1 minute power frequency withstand voltage, dry test: 95 kv 1 minute power frequency withstand voltage, wet test: 80 kv Lightning impulse withstand voltage(peak value): 185 kv Rated current: 1600A / 2000A Rated short-circuit breaking current: 20KA, 25KA, 31.5KA Rated short-circuit making current(peak): 50KA, 63KA, 80KA Rated operating sequence: O-0.3s-CO-180s-CO Rated short-time withstand current: 20KA, 25KA, 31.5KA Rated peak withstand current: 50KA, 63KA, 80KA Rated short-circuit duration: 4 s Rated control voltage: AC220,110;DC220,110 Rated short-circuit breaking current break times: 20 times Full-break time: