> On 06/10/10 06:04 PM, Bill, W6WRT wrote:
>> ORIGINAL MESSAGE:
>>
>> On Wed, 9 Jun 2010 16:22:11 +0200, Andre Goldschagg
>> <totiranger@gmail.com> wrote:
>>
>>> Is there a standard formula to use to calculate the KVA rating of a
>>> transformer?
>>
>> REPLY:
>>
>> This may sound like I'm joking, but I'm not: When running
>> continuously, if the transformer runs too hot to touch, it is
>> overloaded. Heat is the enemy of the insulation and will deteriorate
>> it over time, leading to failure.
>>
>> 73, Bill W6WRT
>
> Personally I would have thought just because a transformer is not too hot
> to
> touch, it would not be safe to assume it is ok. I've run many transformers
> up to
> their maximum ratings and they are nowhere near being too hot to touch.
>
> The perception of too hot will also change with person. I recall once
> finding a
> radiator too hot to touch, but someone else could hold their hand on it
> continuously.
>
> Dave
I wouldnt want to rest my hand on any transformer running at its safe
maximum using a H rated design.
Carl
KM1H
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