( 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
Answers were Sorted based on User's Feedback
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.
| Is This Answer Correct ? | 0 Yes | 1 No |
if the capacitor bank is 525v??izzit the calculation same
as 440v??
| Is This Answer Correct ? | 0 Yes | 4 No |
what could be the RMS value and average value of a 4 phase sine wave?
what is resistance
In oil transformer which oil is used & what should be the insulation resistance & heating capacity.
Whats the type of current and potential transformers?
how to measure earth pit resistance
7 Answers BARC, BYD Electronic, Construction,
IN bateery size of positive is biger than negative .why?
I have a table fan of Rallifan Make. When I overhauled it I found a stator winding and an aluminum die cast rotor. So it is supposed that it is a 1 phase induction motor. But there are only two terminals coming out and there is no capacitor. Can any one tell how this motor works? or which type of this motor is?
how electricity is generated an supplied till consumer
why US countries maintains 110v and 60HZ
define the power factor in one word
What is meant by turbo alternators?
what are the main applications of transistor in non-linear region?
Civil Engineering (5086)
Mechanical Engineering (4453)
Electrical Engineering (16638)
Electronics Communications (3918)
Chemical Engineering (1095)
Aeronautical Engineering (239)
Bio Engineering (96)
Metallurgy (361)
Industrial Engineering (259)
Instrumentation (3014)
Automobile Engineering (332)
Mechatronics Engineering (97)
Marine Engineering (124)
Power Plant Engineering (172)
Textile Engineering (575)
Production Engineering (25)
Satellite Systems Engineering (106)
Engineering AllOther (1379)