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rybrk
Active Contributor

Join Date: Dec 2010
Posts: 12

How to Calculate 3 Phase 11kV/415 Volts Transformer

12/09/2010 12:49 AM

We require one 3 phase 11KV/415 volts Transformer for the following connected loads

3 phase,415 volts load 1500KW and single phase 230 volts AC load 300KW.can any body suggest the design calculations for Transformer.
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Anonymous Poster
#1

Re: How to Calculate 3 Phase 11kV/415 Volts Transformer

12/09/2010 10:30 AM

If you plan to buy transformer,please tell the supplier/manufacturer of transformer.
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Happy singh
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India - Member - New Member

Join Date: Jul 2010
Location: India
Posts: 162
#2

Re: How to Calculate 3 Phase 11kV/415 Volts Transformer

12/10/2010 7:41 AM

Give further details of 3 phase load. It must not be single load of 1500KW.

I mean No. of motors, heaters etc there ratings,

No. of starts for motor, Starting method of motor (DOL, VFD, Star/delta or Auto transformer etc)

Is 1 phase load distributed on all three phases?

It is difficult to answer with partial information provided by you.

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TonyS
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United Kingdom - Member - New Member

Join Date: Aug 2010
Location: Resting under the Major Oak
Posts: 4347
Good Answers: 181
#3

Re: How to Calculate 3 Phase 11kV/415 Volts Transformer

12/10/2010 8:48 AM

If you have to ask the question I doubt you are in a position to place the order for the transformer.

An engineer would have provided the relevant information in the OP, but by that virtue he would know the answer.

If this is a homework question, then look at it practically. IE by specifying a "standard" rated transformer, not by specifying a 1530KVA unit.

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