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

Topic Options
Rate This Topic
#129225 - 11/18/04 02:09 PM k fuse selection
Alberto Santiago Offline
Junior Member
Registered: 08/06/04
Posts: 2
Loc: Tijuana, Baja California, Mexi...
it is a transfoermer of 1500 kva, 3 ph, 13200 volts primary, 480/277 volts secondary, %z=5.75, i calculated the size of fuse as follow:
nominal current on primary side= 65.6 A
size of fuse= 65.6 x 2.4 = 157.45 A
i select a 150 amperes fuse
am i right or wrong?
if i am wrong can somebody help me, how can i calculate a k fuse?.
Top
Tools for Electricians:
#129226 - 12/31/04 12:08 PM Re: k fuse selection
Alberto Santiago Offline
Junior Member
Registered: 08/06/04
Posts: 2
Loc: Tijuana, Baja California, Mexi...
thanks anyway
Top
#129227 - 12/31/04 05:13 PM Re: k fuse selection
Bjarney Offline
Moderator
Registered: 04/10/02
Posts: 2527
Loc: West-Southern Inner-Northeast ...
Alberto, I apologize for overlooking your original post.

Unfortunately, distribution-transformer fuse sizing is typically out of the scope of the E-C.net message board. I have very little experience with this, and it was with T (slow) and not K links.

There is some limited, very general manufacturer’s information on universal-link fuses for MV-distribution circuits. www.cooperpower.com/Library/pdf/KSEC030.pdf www.cooperpower.com/Library/pdf/02022.pdf
Top

Member Spotlight
Member Since: 12/24/00
Posts: 4259
New in the Gallery:
SE cable question
Featured:

2017 NEC and Related
2017 NEC
Now Available!

Shout Box


Who's Online
2 registered (gfretwell, sparkyinak), 53 Guests and 10 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