[Boatanchors] Transformer cooking

[Carl]

If its a big transformer the oven will never get the core center warm.

I have a 3.5 kVA one that was stored in an open garage for about 30 
years and it was built in 1946 for industrial use. Way too heavy for the 
oven anyway.

I shorted the outer secondary leads and put a Variac on the primary with 
a series ampmeter on primary and secondary and fuses.
Brought it up to half rated secondary current and let it sit for a day, 
then up to 75% for another day.

Its been in the basement running the big AM KW for a year now.

Carl
KM1H


----- Original Message ----- 
From: "Joe Walden" <w5jdy at intergate.com>
To: <boatanchors at mailman.qth.net>
Sent: Wednesday, January 07, 2009 5:58 PM
Subject: [Boatanchors] Transformer cooking


> Hello,again from Joe w5jdy in Okla...   I have seen this answer on 
> here
> before but failed to save it...  Please help me again....   I have a 
> power
> tranny that was stored in a high humidity atmosphere...   What 
> temperature
> and how long should I cook it in the oven to be sure its dried out???
> Thanks for your time... Joe     w5jdy at intergate.com
>
> _______________________________________________
>