# industrial transformer selection

Discussion in 'The Projects Forum' started by tahir mehmood, Aug 22, 2014.

1. ### tahir mehmood Thread Starter New Member

Jun 28, 2013
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0
Dear Professionals;

can you people help in selection of a transformer whose technical details are as under:
Primary Voltage : 230v/3-phase/60 hz
Secondary voltage : 380 V/3-Phase/60 Hz.

Total load = 400 Amperes.

i Just need the transformer selection.

2. ### R!f@@ AAC Fanatic!

Apr 2, 2009
8,754
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U are better off winding one.

3. ### MaxHeadRoom Expert

Jul 18, 2013
10,571
2,381
If that is the secondary load, the primary will be double that.
Max.

4. ### Ramussons Active Member

May 3, 2013
557
92
I think you better give a schematic of what you want. The definition of 230V 3 Phase is not clear. If each Phase to Neutral is 230 Volts, it would mean 440V phase to phase.

What is the Transformer to be used for?

5. ### gerty AAC Fanatic!

Aug 30, 2007
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williamj likes this.
6. ### tahir mehmood Thread Starter New Member

Jun 28, 2013
16
0
Dear Ramussons the transformer primary voltages are 230v line to line and 110v line to phase.
the total load is 400 Amperes and we are going to install this transformer for our newly installed factory i.e. for industrial use,which may include inductive load of motors,lighting,and many more.

7. ### Johann Senior Member

Nov 27, 2006
190
30
230V line voltage and 110V phase voltage? If the primary is Star(Wye)-connected, I get 132.8V.

The total load you are referring to, is that your secondary line current? (263.27kVA)

Looks like you'll have to settle for something between 300kVA and 500kVA

Last edited: Aug 23, 2014
8. ### Ramussons Active Member

May 3, 2013
557
92
If the Phase to Phase is 220 and Phase to Neutral is 110, it's not 3 Phase. it is 2 phase in opposition.

Jun 7, 2009
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