In an air blast circuit breaker, why is compressed air used?
Quenching the arc
Based on the principle of operation of an air blast circuit breaker , the primary reason for using compressed air is for quenching the arc . Arc quenching is the process of extinguishing the electric arc that forms between the contacts of a switch or circuit breaker when it interrupts a current.
Important Questions from Protective Relays
Earth breaker circuit uses
A relay whose characteristic is modified by additional mechanical or electromagnetic procession is termed as
A 3-phase transformer rated for 33/6.6 kV is connected to a star/delta and the current transfer on the LV side has a ratio of 500 : 5. Determine the ratio of the current transformer on the HV side.
Which type of oil has the highest breakdown strength?
What type of protection is used for LT lines passing through agricultural fields?
