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#90979 - 12/20/04 05:53 AM Transformer Rateings
Yoopersup Offline

Registered: 03/04/03
Posts: 826
Loc: Michigan
4160 primary delta
480 volt secondary wye
Dual rated 1500/1935
Whats the best this transformor can be expected to put out .
I know 1935x1000=1935000 divided by 7196.8 (1.73x4160)=268.9 amps on pri.
1935000 divided by divided by 830.4 (1.73x480) = 2330
450.3a for fusing pri. and secondary
Supervised location
But what percentage of transformer full load current can one trully expect a transformer to perform at and be reliable???
reason I;m asking, its designed to feed a 5000 amp buss with a load I calulatate at min 3500 amps .Just interested in transformer info not a bunch of unrelated


2014 / 2011 NEC & Related Books and Study Guides
#90980 - 12/20/04 12:20 PM Re: Transformer Rateings
Yoopersup Offline

Registered: 03/04/03
Posts: 826
Loc: Michigan
Found my own answer:
Transformers can preform at 100% no problem . Thats it, Talked to Sq.D. & several design eng.
1500 without fan kits
1935 with fan kits to disabate the heat


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