( Re: WHAT SHOULD BE THE RATING OF MCCB FOR 415V,3Ph,50KVAR CAPACITOR BANK A

( Re: WHAT SHOULD BE THE RATING OF MCCB FOR 415V,3Ph,50KVAR
CAPACITOR BANK
Answer
# 1 The capacitor current would be kvar x 1000 / (415 x
sqrt3). This would be 70a approx. The MCCB selected should
have *atleast 1.4 times this current i.e. 1.4 x 70= 98. So
you should choose at least 100 A mccb.)
regarding to this answer,i would like to know why the
current have to times 1.4 to get the right amphere for the
mccb.hows the formula to get the 1.4??tq

Question Posted / kimberly0617

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( Re: WHAT SHOULD BE THE RATING OF MCCB FOR 415V,3Ph,50KVAR CAPACITOR BANK Answer # 1 The capac..

Answer / silu pattanayak

While switching the Capacitor, a charging current of 1.4 times the rated value will be taken by the capacitor due to the "transient" phenomena arising during switching. Therefore, a factor 1.4 is used as safety factor to avoid unnecessary tripping during switching.

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( Re: WHAT SHOULD BE THE RATING OF MCCB FOR 415V,3Ph,50KVAR CAPACITOR BANK Answer # 1 The capac..

Answer / kimberly0617

if the capacitor bank is 525v??izzit the calculation same
as 440v??

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