Answer Posted / aruloli

Dear Friend
You forgot to furnish few more data i.e Voltage rating of
primary and secondary.

If i assume Voltage rating for 10 KVA Transformer as 230
V/110 V (Primary/secondary)and considering as single phase .

primary load current is calculated as

P=VI

10*1000(VA)=230*I
I=43.47 A

Secondary current is ,
90.90 A

Considering Transformer as 3 phase, then

P=1.732*v*I

Primary load current is

10000=1.732*230*I

I=25.10 A

Secondary is,

52.48 A

Tell me the reason of connecting domestic t/f primary in star or delta,and also secondary side.

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