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Question
```How much current can 11KV line carry? What are the
formulae used to calculate current across both side of
transformer? Moreover I need to know can I connect 33KV
line with transformer of 1600KVA? Details are: V=415,
Pf= .9```
Question Submitted By :: Alishahbaz
I also faced this Question!!     Rank Answer Posted By

Re: How much current can 11KV line carry? What are the formulae used to calculate current across both side of transformer? Moreover I need to know can I connect 33KV line with transformer of 1600KVA? Details are: V=415, Pf= .9
# 1
KW = KVA*PF
KW = 1600*0.9
KW = 1440
11KV PRIMARY CURRENT=
KW = 1.732*KV*I*PF root(3) = 1.732
1440 = 1.732*11*I*0.9
1440/1.732*11*0.9 = I
I = 83.98 AMPERE
415V SECONDRY CURRENT=
WATTS = 1.732*V*I*PF
1440000 = 1.732*415*I*0.9
I = 2226 AMPERE

 Is This Answer Correct ? 8 Yes 2 No
Arulkumaran

Re: How much current can 11KV line carry? What are the formulae used to calculate current across both side of transformer? Moreover I need to know can I connect 33KV line with transformer of 1600KVA? Details are: V=415, Pf= .9
# 2
11KV PRIMARY CURRENT[HT]:

KW = KVA*PF

POWER [KW]= 1600*0.9

POWER = 1440 KW

POWER [KW]=&#8730;3*KV*I*PF
root(3) = 1.732

1440 = 1.732*11*I*0.9

1440/1.732*11*0.9 = I

I = 83.98 AMPERE

415V SECONDRY CURRENT[LT]:

WATTS = 1.732*V*I*PF

1440*1000 = 1.732*415*I*0.9

I = 2226 AMPERE

 Is This Answer Correct ? 2 Yes 3 No
Manimaranmuthu.m

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