[BC] HT Transformer

[John Vodenik]

Going back a couple weeks....

Clive, I have 3 oil filled transformers and diode
stacks for our Collins 250 kW rigs, that have been
sitting outside in crates for YEARS.  What needs to be
done before they are put into service?

Thanks,
John @ VOA / Delano

clive at citiria.com wrote:
> 
> 
> Assuming this is (very likely) an open-frame type and not oil-immersed, the
> failure of the replacement is almost certainly due to the engineer not having
> sufficient training and experience.
> Open-frame HT transformers MUST be conditioned and properly insulation tested
> before being put into service. Usually takes 2 - 4 days. Otherwise you can expect
> early failure in exactly the way you described.
> Clive Warner.
> 
>