SF6 Circuit Breaker

SF6 Circuit Breaker

Sulfur Hexafluoride circuit breakers are commonly known as SF6 circuit breakers. They are the devices that enable the control and protection of electrical types of equipment in the transmission and distribution of power systems.

The name SF6 circuit breaker is due to the presence of SF6 gas that is used to extinguish the arc formed during the opening of the circuit breaker. As SF6 gas is used to quench and cool down the arc, so this type of circuit breaker is safe and reliable to operate.

SF6 circuit breakers are typically used in substations to tackle high-level voltages due to their high thermal conductivity and dielectric strength properties.

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Branch: Electrical Engineering

Subject: Switchgear and Protection

Topic: Circuit Breaker

Subtopic: SF6 Circuit Breaker

Learning Objectives

After completing this module, you will be able to:

1. Learn the working principle of SF6 circuit breaker.
2. Analyze the constructional design and purpose of each component in the SF6 circuit breaker.
3. Describe the types and various formulae that we deal with in the SF6 circuit breaker.
4. List out the applications of SF6 circuit breakers in various industries.