Gents,
Doing a bench test of my new P.W.Dahl custom-wound
filament transformer with no loads attached the breaker was on
for under five seconds before the unit burned out.
A small puff of white smoke, a nasty smell and now
a fried transformer. All the connections matched the PWD
schematic and the voltage was as specified for the primary
windings. The transformer had dual 120-vac windings that
jumper together just like the original ALPHA xfmrs so
120 or 240 vac service could be selected.
The unit has already been entered into the FedEx system
and I wanted to let all of you know of the warranty process and
to ask for any guesses as to what might have gone wrong, seeing
that the primary connections were all in-spec (???)