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When charging a 20 MVA , 33kV/6.6kV transformer through
regulated (0-6.6 kV or 0-33 kV) source on no load , what
will be the maximum current drawn by transformer from
source and what sould be the source capacity.
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Answer / dinesh lokhande
Actually above answer is not correct as it is the full load
current.No load current is approximately 4 to 5 % of rated
full load current. hence considering the terminals (i.e HV
side or LV side) the current drawn from source will be 4 to
5 % of respective side rated current.
| Is This Answer Correct ? | 8 Yes | 2 No |
Answer / satya
the charging current is about 6 times the full load current
about 2000 amps but that will be for mill seconds
| Is This Answer Correct ? | 4 Yes | 1 No |
Answer / gunasekaran
for good transformer it should be 0.5%of full load current
for normal it may be upto 1%
| Is This Answer Correct ? | 1 Yes | 1 No |
Answer / pulkit
max current when on load wil be 390 amp drawn by the Hv wdg
of t/f and when on no load the transformer primary losses
occur on the basis of elctic flux principle in which when evr
the current flows in a loop,there is loss in the form of
magnetic field energy that is created arround the primary
coil.it is 1 % of the hv wdg current.
| Is This Answer Correct ? | 0 Yes | 0 No |
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