Question
Download Solution PDFWhich of the following medium is employed for extinction of arc in Air Circuit Breaker?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFExplanation:
|
Type of circuit breaker |
Medium |
Operating voltages |
|
Air Circuit Breaker |
Air at atmospheric pressure |
Low voltage up to l000 V |
|
Tank type oil circuit breaker |
Oil |
Up to 33 kV |
|
Minimum oil circuit breaker |
Oil |
36 kV, 1500 MVA 132 kV, 3000 MVA |
|
Air-blast |
Compressed air |
132 kV, 220 kV 400 kV, 760 kV |
|
SF6 |
SF6 gas |
132 k V, 220 kV 400 kV, 760 kV |
|
Vacuum C.B. |
Vacuum |
11 kV. 33 kV |
|
High voltage direct current C.B. |
Vacuum or SF6 gas |
± 500 kV DC |
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