ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals

Topic Options
Rate This Topic
#90979 - 12/20/04 05:53 AM Transformer Rateings
Yoopersup Offline
Member
Registered: 03/04/03
Posts: 822
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

DETAILS.
Top
2017 / 2014 NEC & Related Books and Study Guides
#90980 - 12/20/04 12:20 PM Re: Transformer Rateings
Yoopersup Offline
Member
Registered: 03/04/03
Posts: 822
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
Top

Member Spotlight
Member Since: 01/22/05
Posts: 5316
New in the Gallery:
SE cable question
Featured:

2017 NEC and Related
2017 NEC
Now Available!

Shout Box


Who's Online
0 registered (), 56 Guests and 9 Spiders online.
Key: Admin, Global Mod, Mod
 
New in the Gallery:
SE cable question
 
Top Posters (30 Days)
Admin 49
HotLine1 43
gfretwell 18
Ruben Rocha 12
Trumpy 9
 
Newest Members
Freecrowder, clee512, Jdscott2005, FAIZAN, Regitest2

ECN Electrical Forums - sponsored by Electrical Contractor Network - Electrical and Code Related Discussion for Electrical Contractors, Electricians, Inspectors, Instructors, Engineers and other related Professionals