Overview

LW38-40.5(G)-CJ overhead porcelain column outdoor AC high-voltage sulfur hexafluoride circuit breaker (hereinafter referred to as circuit breaker) is a kind of outdoor installation, three-phase, AC 40.5kv high-voltage power transmission and transformation system control and protection equipment with SF6 gas as arc extinguishing and insulation medium. It can be used for dividing and combining rated current and fault current, switching capacitor banks and switching lines, especially suitable for frequent operation, and can also be used as a contact breaker. This circuit breaker meets the requirements of IEC High Voltage AC Circuit Breaker and GB1984 High Voltage AC Circuit Breaker.

Environmental conditions for use

Ambient temperature: maximum temperature+40℃; Minimum temperature -30℃.

Relative humidity: daily average relative humidity ≤ 90%; Monthly average relative humidity ≤95%.

Altitude: the altitude under normal use conditions does not exceed 1000m (plain type for short); The altitude of special use conditions is not more than 3000m (plateau type for short);

The wind speed shall not exceed 34m/s (corresponding to 700Pa)； on the cylindrical surface);

The seismic intensity shall not exceed 8 degrees (horizontal acceleration 0.25g, vertical acceleration 0.125g);

Air pollution degree: Grade IV; Minimum nominal creepage ratio: 31mm/kV.

Overall dimensions