Purpose of circuit breaker
- Break the power flow
- Contain the arcing within its chamber and extinguish it
Where you install the circuit breakers and the quantity depends on the bus configuration, as seen below.
What happens when you break a high voltage circuit without special provisions? Take a look below. Uncontrolled arcing is destructive and unsafe.
Cost of circuit breaker
- 365kV dead tank gas breaker: ~$200,000
- 138kV dead tank gas breaker: ~$100,000
- 69kV vacuum breaker: ~$50,000
- 15kV vacuum breaker: ~$25,000
You may be interested in switching capacitive loads using Independent Pole Operating (a.k.a. zero
Lead time to procure circuit breaker
Information on cost and lead-time are rough estimates – c