how to calculate the current if i know power in MW and
voltage 11kv/415v and also want to know that incoming
cables for trnsformer
Answers were Sorted based on User's Feedback
Answer / sripellirajukumar
hi this is rajkumar...
as per my knowledge
the primary side current can be calculate as follows
for example
we have power transformer of 5MW transformer and the 33\11kv
the primary current is (5000kv/33kv)/1.732=87.47amps
the secondary current is (5000kv/11kv)/1.732=262.43amps
here 1.732 is square root of 3....
Is This Answer Correct ? | 43 Yes | 18 No |
Answer / cfanez
Girish,since the power is in MW,it means that we are looking
for current in consideration of power factor.If it were in
MVA,then the calculation given by Rajkumar is ideal.
5000kW=1.732*11*Ip*PF (assume pf =0.85)
5000=1.732*11*Ip*0.85
primary current Ip=308.7A
5000=1.732*.415*Is*0.85
Secondary currentIs=8,183.6A
Select cable capable from your table.If surface then
alluminum cable should be selected,if underground,suitable
hV cable should be selected to suit the primary and
secondary current carrying capacities respectively.
Is This Answer Correct ? | 15 Yes | 6 No |
Answer / tasawar abbas
power factor panel calculation?
why I use the PFI panel in industry?
whose I select the kvar rating?
Is This Answer Correct ? | 6 Yes | 4 No |
Answer / j.kesavan
check tr current in name plate py side after slect h.t
(xlpe)cable fix .
Is This Answer Correct ? | 2 Yes | 2 No |
Answer / hosam
33000KV/11000KV 20MVA = 20000KVAX0.8=16000KW
1000kva H.V=52.5
L.V=1333.4
433V
Is This Answer Correct ? | 2 Yes | 2 No |
Answer / perumalsamy o
5mva
I = 5000/33*1.732
I = 57.5A (HT amps 33 kv side)
I = 5000/11*1.732
=262.5A(HT amps 11kv side)
Is This Answer Correct ? | 1 Yes | 9 No |
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