LN□-35 Type Indoor High Voltage SF6 Circuit BreakerDetailed product description：

LN □ -35 indoor high-voltage SF6 circuit breaker is suitable for use in power systems with AC frequency of 50HZ, rated working voltage of 35KV, and rated working current of 1250-3150A. It is used as a control and protection equipment for electrical equipment in industrial and mining enterprises, power stations, and substations. It can also be used as a control and protection equipment for frequent operation of capacitor banks, high-voltage motors, and electric furnace transformers.

Product model and name



LN □ -35 Indoor High Voltage SF6 Circuit Breaker Operating Conditions

1. Installation height not exceeding 1000m above sea level
2. The ambient temperature is -10~40 ℃ (the actual minimum temperature can reach -20 ℃)
3. Relative humidity not exceeding 90% (25 ℃)
4. The installation site should have no fire or explosion hazards, no chemical gases or vapors that severely corrode metals and insulation materials, and no severe vibrations

structural characteristics
The LN □ -35 SF6 circuit breaker is a column type three-phase structure, with the three phases fixed to the handcart through the bottom box and the upper three insulators. The spring operated mechanism drives the large shaft to rotate through the side rod, thereby driving the rocker arms of the three phases to push the small shaft, making the three-phase conductive rods and pistons move vertically in a straight line to achieve opening and closing. The opening force comes from the opening spring connected to the large shaft, and both opening and closing are equipped with oil and mechanical buffers.
The arc extinguishing chamber structure of LN □ -35 circuit breaker is mainly of the compressed air type, which generates a strong arc blowing effect towards the nozzle during the movement of the piston. A density relay is installed on the box to monitor the pressure changes of SF6 gas and automatically sound an alarm. Each phase circuit breaker is equipped with an adsorption cover inside, which contains F-03 adsorbent that can adsorb moisture and impurities in SF6 gas at any time. The dynamic and static contacts (arcing contacts) of the circuit breaker are made of high-strength and high-performance copper and copper tungsten 80 (WCu80) sintered as a whole, which has good conductivity and high arc resistance. Equipped with CT □ spring operating mechanism.