Product overview

LW34-40.5 outdoor high-voltage sulfur hexafluoride circuit breaker is a three-phase AC 50 Hz outdoor high-voltage electrical equipment. Suitable for control and protection of 40.5kV transmission and distribution system; It can also be used to contact circuit breakers and open and close capacitor banks; A current transformer can be attached for measurement and protection. LW34-40.5 circuit breaker is equipped with CT14 spring operating mechanism. The circuit breaker meets the requirements of the national standard GB1984-1989 AC High Voltage Circuit Breaker and IEC60056：1987 AC High Voltage Circuit Breaker. The main characteristics of the circuit breaker are: excellent breaking performance, short arc burning time and long service life by using compressed air interrupter, and continuous breaking of 25 kA for 20 times at rated voltage without maintenance and replacement of sulfur hexafluoride gas; The insulation is reliable, and the air pressure can withstand 40.5KV10 minutes at zero gauge pressure; High mechanical reliability, strong closing ability and frequent operation; Switching capacitor bank current 400 A without reignition; Cut the long line for 25 or 50 kilometers without reignition; Simple structure, small volume and long maintenance period. 40.5KV-126KV sulfur hexafluoride circuit breaker.

Use environmental conditions

Altitude: no more than 2500; Rice;

Plateau type 4000 meters;

Ambient temperature:-30℃-+40℃ (special requirements-40℃-+40℃);

Relative humidity: the daily average is not more than 95%, and the monthly average is not more than 90% (25℃);

Wind speed: not more than 35 m/s;

The pollution level is Grade III;

The creepage distance of porcelain sleeve is 1050mm(1320mm) (the nominal creepage distance is not less than 25 mm/kV).

Sunshine: 0.1w/cm2；;

Icing: 10mm(MAX)

Seismic conditions: vertical acceleration of 0.3g；;

When the horizontal acceleration is 0.15g(max), there are no flammable substances, explosion hazards, chemical corrosion and violent vibration.

Product outline dimension diagram