HOW CIRCUIT BREAKER RATING CALCULATED?WHAT ARE THE
Answers were Sorted based on User's Feedback
Answer / asutosh
the breaker rating depends on
1 total incoming supply in kV.
2 total power requirment in kVA.
3 the short circuit power for perticular supply.
|Is This Answer Correct ?||39 Yes||7 No|
Answer / r p payasi
kVA rating=Sqrt(3)*KV*Fault current(max)
so required is
1.Voltage of line
2.max fult current
|Is This Answer Correct ?||14 Yes||3 No|
Answer / thileepan
above answer is exact
|Is This Answer Correct ?||10 Yes||4 No|
Answer / p l narayana
circuit breakers are selected in kva which can calculated
from the fallowing equation
KVA Rating=3^0.5*phase voltage*short circuit current*1.25
|Is This Answer Correct ?||2 Yes||5 No|
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