ZN85-40.5 Indoor high voltage vacuum circuit breaker

Overview

The three-phase arc extinguishing chamber and the phase-connected live body are isolated by three independent epoxy resin green insulation cylinders to form a composite insulation structure. The circuit breaker meets the air distance and creepage distance requirements under normal operating conditions and effectively reduces the volume of the circuit breaker. The vacuum arc extinguishing chamber of the main conductive circuit and the dynamic and static conductive connection are installed in the insulation cylinder, so that the phase spacing is only 300mm. The main circuit electrical connection is all fixed, which has high reliability. The insulation cylinder is installed above the circuit breaker frame.

The spring lifting mechanism designed for this circuit breaker is installed in the circuit breaker frame. Its structural characteristics are more suitable for the upper and lower arrangement of the circuit breaker and become an inseparable part of the overall structure of the circuit breaker. The mechanism design is simple, and the output curve and its performance are suitable for the characteristics and requirements of 40.5kV vacuum circuit breakers.

Technical Parameters