I. Overview

Indoor high-voltage three station Vacuum circuit breaker has excellent electrical and mechanical performance, reliable and stable mechanism, and long service life. The main circuit adopts fixed sealed pole, which improves the environmental adaptability and insulation reliability of the circuit breaker; Reliable mechanical and electronic performance, extended mechanical and electronic lifespan, make maintenance free circuit breakers possible. It can be used in 3.6-12kV power systems as a power grid equipment and a protection box control unit for power design in industrial and mining enterprises. It is suitable for various types of loads and frequent operations, as well as situations where short-circuit currents are disconnected multiple times. The product has complete mechanical and electrical interlocking devices, with high operational stability and reliability, ensuring the safety of operators and equipment, and ensuring electrical safety.

II. Structural Features:

--Adopting fixed sealing pole technology.

--The product adopts a modular design: a frame structure that integrates high-performance miniaturized high-voltage electrical products such as isolation switches, sealed vacuum circuit breakers, grounding switches, sensors, interlocking mechanisms, and operating mechanisms.

--The compatible cabinet size is (500 × 1000 × 1800) mm.

--Rotary isolating switch with visible fracture after opening.

--There is a mandatory mechanical interlock between the isolation switch, circuit breaker, and grounding switch to prevent misoperation.

--The circuit breaker adopts a modular operating mechanism, which can be independently replaced or maintained, and has good interchangeability. It can be operated manually or through AC/DC energy storage, achieving remote control.

--The cabinet door and grounding switch are designed with a reliable interlocking structure to ensure the safety of operators.

III. Usage conditions:

--Surrounding ambient temperature: -25 ℃+40 ℃;

--Relative humidity: daily average<95%, monthly average<90%;

--Altitude: not exceeding 1000m;

--Seismic intensity: not exceeding 8 degrees:

--Place of use: No explosion hazard, chemical and severe vibration, and contamination.

--Usage conditions above an altitude of 1000 meters

--When the altitude exceeds 1000 meters. The air density will relatively decrease, which will affect the protection coefficient of electrical appliances.