[Boatanchors] KRM Variable Transformer

[Ron via Boatanchors]

In all probability, it's the correct current rating, but not the correct characteristic.
The rating of 500 VA implies maximum allowable current of 500 / 120 = 4.1A 

with resistive loads. Assuming a reactive load at max rating, the current could 

easily get over 5A and immediately blow the fuse. GMA are a fast acting fuses. 

Try to replace with a 5A slow blow fuse.

-- Ron



On Sunday, July 20, 2014 10:53 AM, David C. Hallam <dhallam at knology.net> wrote:
 

>
>
>I have a KRM model ACCE-590VR variable transformer.  The transformer is 
>rated at 110V in; 0-130v out; 0.5 KVA.  It came with a GMA 5A fuse.  It 
>will work for awhile and then blow the fuse.  I've been all over it 
>hunting for possible shorts, resoldered some internal connections, 
>carefully cleaned and checked insulation of the wiper. I can't find any 
>information, manual, etc., about it so I don't know if the 5A fuse is 
>the correct size.  Given the rating of the transformer, it sounds about 
>right.
>
>Does anyone know anything about this model or have some suggestions?
>
>David
>KW4DH
>
>-- 
>"I predict future happiness for Americans if they can prevent the government from wasting the labors of the people under the pretense of taking care of them."
>Thomas Jefferson
>
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