ZW8-12 vacuum circuit breaker ZW8-12F / 630 stainless steel electric

Scope of the circuit breaker is a three-phase AC 50Hz outdoor high voltage switchgear, mainly for the rural network and the urban network of 12kV system as open, close load current, overload current and short circuit current purposes. It can also be used for other similar places. Model and its meaning use of environmental conditions 1, ambient air temperature: up to + 40 ℃ lower limit of -40 ℃; 2, altitude does not exceed 2500m; 3, air pressure does not exceed 700Pa (equivalent to wind speed 34m / s); 4, non-recurring 5, the air pollution level shift; severe vibration: Level III; 6, maximum daily temperature: 25K; structural characteristics 1, the product structure: circuit breaker by the actuator, the conductive circuit, insulation systems, seals and housing components. The overall structure of a three-phase common tank type. Conductive loop is formed by conductive rod into the outlet, the movement end of the conductive plate, conductive clamp connected to a vacuum interrupter formed. Mainly through the outer insulation silicone rubber material to achieve, with a strong ability to move dirt. Insulating composite insulation. 2, the action principle: The breaker is operated by the actuator shown in Figure 1, the body or the opening spring 4 drive spindle 2 to rotate the three-phase circuit breaker, and pull the insulation operation rod 5 and the crank arm 6, so that the vacuum interrupter movement of the contact chamber 11 opened or closed, leaving the circuit breaker is in the open or closed state.