Showing posts with label circuit breaker. Show all posts
Showing posts with label circuit breaker. Show all posts

Applications of SF6 circuit breaker

Application of SF6 circuit breaker:

  • High voltage applications
  • Power distribution ad control.
  • Line protection for power circuits.
  • Capacitor circuits
  • For the protection of transformers.
  • Rectifier circuits.
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Application of oil circuit breaker

 Application of the oil circuit breakers(OCB):

  • It switchyard oil circuit breaker used.
  • It acts as a good dielectric medium ad quenches the arc.
  • Oil circuit breakers are used in small and medium substations for the protection of distribution lies.
  • The oil is used is a very good insulator and allows smaller clearance between live conductors and earth components.
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Application of vacuum circuit breaker

 Application of  vacuum circuit breaker (VCB):

  • The vacuum circuit breaker is very useful as very high-speed making switches in many industrial applications.
  • When the voltage is high and the current to be interrupted is low these breakers have definite superiority over the other breakers.
  • For low fault interrupting capacities, this circuit breaker cost is low in comparison to other interrupting devices.
  • because of the least requirement of maintenance, these breakers are very suitable for the system which require voltage from 11 to 33 kV.
  • The vacuum switches can be employed for capacitor switching for materials which is a very difficult task for oil circuit breakers.
  • These can be used along with static overcurrent relay and give an overall clearance time of less than 40ms on phase to phase faults.
  • These are many applications where a simple load reak switch is not enough ad at the same time the devices employed should not be costly. These applications give fast RRRV ad vacuum circuit breakers are the best solutions.
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