High Voltage Sf6 Circuit Breaker

For high voltage SF6 circuit breakers, Youbian believes that SF6 gas is currently the best insulation material. How does SF6 gas work in circuit breakers? Why is electrical testing of circuit breakers so important? What are the precautions for handling SF6 gas when operating SF6 gas circuit breakers? Please continue reading to learn about all these issues and more information.

The Youbian durable high voltage SF6 circuit breaker is a three pole/single pole AC 50Hz/60Hz outdoor high-voltage transmission equipment used for dividing rated current, fault current or conversion lines, as well as protecting, controlling and operating transmission and distribution systems. It can achieve opening and closing and fast automatic reclosing operations. This circuit breaker adopts the latest design principles and has the characteristics of simple structure, small size, low power consumption, low operating energy consumption, high reliability, easy installation, and low noise. It is a new generation of high-voltage SF6 circuit breaker developed by our company.

Usage environment

1. Environmental temperature: -40 ℃ to+50 ℃

2. Daily average relative humidity of ambient air ≤ 95%, average ≤ 90%

3. Wind pressure: ≤ 700Pa

4. Altitude: ≤ 3000m

5. Earthquake intensity: not exceeding 9 degrees.

6. Air pollution level: Level III.

structure

The igh voltage SF6 circuit breaker adopts the self breaking principle, significantly reducing the diameter and weight of the pressure cylinder, lowering the operating power, and making the installation of a spring operated mechanism a reality. Three single pole circuit breakers are installed on a spring mechanism composed of three brackets, which can be operated in a single pole or achieve three pole electrical linkage. The spring mechanism is installed on the side of the bracket, and the electrical control system is placed inside the body. The upper part of the body is a single pole circuit breaker with a single break, the middle pillar is a ceramic body, and the lower part is a sealing element, a breaking spring, and a buffer.

FAQ

What are the application areas of SF6 gas?

SF6 gas is commonly used as electrical and thermal insulation material in medium and high voltage transmission and distribution systems.

These include:

circuit breaker

switch device

Power, voltage, and current transformers

Gas insulated circuit

capacitor

Why is SF6 the preferred insulator for circuit breakers and switchgear?

SF6 can effectively extinguish the arc generated when the circuit is connected or disconnected. It also has very high thermal conductivity, especially at high temperatures, which makes it more effective in heat dissipation than air, nitrogen, or other dielectrics.