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k fuse selection #129225
11/18/04 06:09 PM
11/18/04 06:09 PM
Alberto Santiago  Offline OP
Junior Member
Joined: Aug 2004
Posts: 2
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?.

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Re: k fuse selection #129226
12/31/04 04:08 PM
12/31/04 04:08 PM
Alberto Santiago  Offline OP
Junior Member
Joined: Aug 2004
Posts: 2
Tijuana, Baja California, Mexi...
thanks anyway

Re: k fuse selection #129227
12/31/04 09:13 PM
12/31/04 09:13 PM
Bjarney  Offline
Joined: Apr 2002
Posts: 2,527
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 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.


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