Re: No-load losses for distribution transformers?

Home Electrical Engineering Forum General Discussion No-load losses for distribution transformers? Re: No-load losses for distribution transformers?

#12411
Ally Kanyondo
Participant

Spir Georges GHALI said:

Dear Mr. Ally ;

 

Please find below the relative information:

For ” 11 kV ” :

– 630kVA : Po : 1790W,     Pt(+70°C) : 6940W

– 800kVA : Po : 2470W,     Pt(+70°C) : 8370W

– 1000kVA : Po : 2940W,     Pt(+70°C) : 9800W

– 1250kVA : Po : 3520W,     Pt(+70°C) : 11800W

– 1600kVA : Po : 3890W,     Pt(+70°C) : 14400W

– 2000kVA : Po : 4830W,     Pt(+70°C) : 17100W

– 2500kVA : Po : 5990W,     Pt(+70°C) : 20700W

– 3200kVA : Po : 4600W,     Pt(+70°C) : 23400W

 

For ” 33 kV ” :

– 630kVA   : Po : 2100W,     Pt(+70°C) : 6750W

– 800kVA   : Po : 2580W,     Pt(+70°C) : 8370W

– 1000kVA : Po : 2800W,     Pt(+70°C) : 9280W

– 1250kVA : Po : 3000W,     Pt(+70°C) : 12350W

– 1600kVA : Po : 3600W,     Pt(+70°C) : 14600W

– 2000kVA : Po : 4600W,     Pt(+70°C) : 16200W

– 2500kVA : Po : 5780W,     Pt(+70°C) : 19800W

– 3200kVA : Po : 6620W,     Pt(+70°C) : 22500W

 

Where :

     – Po : the Losses without load

     – Pt(+70°C) : the losses with ful load at ” +70°C “

 

Noting that values are for ” Zucchini – Italy ” transformers, and there's some differences between manufactures.

 

Regards.]

 

Dear Mr. Ghali

 

Thank you very mch for your clarification.

 

Regards.