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Transformer Rateings #90979
12/20/04 08:53 AM
12/20/04 08:53 AM
Y
Yoopersup  Offline OP
Member
Joined: Mar 2003
Posts: 849
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

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Re: Transformer Rateings #90980
12/20/04 03:20 PM
12/20/04 03:20 PM
Y
Yoopersup  Offline OP
Member
Joined: Mar 2003
Posts: 849
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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