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IN 500 KVA TRANSFORMER 11KV/415 VOLTS HOW TO CALCULATE THE HT
CABLE SIZE AND LT CABLE SIZE FROM TRANSFORMER TO LT PANNEL.
AND HOW MANY MAINSWITCHES OR MCBS WITH RATING ARE TO BE
PROVIDED

Answers were Sorted based on User's Feedback



IN 500 KVA TRANSFORMER 11KV/415 VOLTS HOW TO CALCULATE THE HT CABLE SIZE AND LT CABLE SIZE FROM TR..

Answer / sudhakar g

First you have to caluclate the load of the T/F i.e
KW=KVA*p.f
KW=500*0.8=400KW
I=kw*1000/1.732*415v*0.8
I=696.74 A
Based on these we can choose the Cable size ....
suppose the LT AL cable of 3.5c x 400 sqmm will give 530 A
of polycab....if we go for two runs of 400sq.mm means it is
good and the breaker size we will go for 800A ACB bresker
means it is good....

I am taking Electrical desining classes in Bangalore...It
will be usefull for designing as well as site engineers
those who are intrested to go for Electrical
Engineers....we give you indepth knowledge of Load calu,
Cable sizing, Lighting cal, panels, breaker
selection,Autocad drawing....if any body intrested means
pls call to +91-7760362623 or sudhakar28485@gmail.com

Is This Answer Correct ?    17 Yes 13 No

IN 500 KVA TRANSFORMER 11KV/415 VOLTS HOW TO CALCULATE THE HT CABLE SIZE AND LT CABLE SIZE FROM TR..

Answer / brijesh kumar

kindly give full answer

Is This Answer Correct ?    7 Yes 6 No

Post New Answer

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