[ARC5] Collins xfmr ratings

Geoff geoffrey at jeremy.mv.com
Thu Aug 14 11:49:53 EDT 2014



> On 14 Aug 2014 at 9:02, KG4KGL wrote:
>
>> I hope someone here can help with Collins equipment. I have power 
>> transformer
>> model # 672-0286-009
>
> Someone on the Collins reflector could help you with that. I can't.
>
>> It is rated at 1100/700 CT but I can not find anything about its current 
>> rating.
>
> You can usually get a pretty fair idea of the power capability of any
> transformer from the size of the core and the weight. I've gotten so that 
> I can
> look at a power tranformer and guess the wattage capability pretty 
> closely.
> There are even forumlae out there on weight vs power capability, and size 
> of
> core vs power capability.
>

A bit hard to do when it is potted and fully cased. I put a variable load on 
small iron and when the voltage drops 10% I figure that measured current is 
close enough.

Carl



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