[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: MOT stack rebuild

Original poster: "Paul B. Brodie" <pbbrodie@xxxxxxxxxxxxx>

Christopher,
Where are you? I'm afraid of the answer. I have a bunch of MOT's and would be more than happy to send you one. If you are overseas this might not be viable.
Paul
Think Positive

----- Original Message -----
From: "Tesla list" <<mailto:tesla@xxxxxxxxxx>tesla@xxxxxxxxxx>
To: <<mailto:tesla@xxxxxxxxxx>tesla@xxxxxxxxxx>
Sent: Friday, July 01, 2005 2:37 PM
Subject: MOT stack rebuild

> Original poster: "Christoph Bohr" <<mailto:cb@xxxxxxxxxxxxxxx>cb@xxxxxxxxxxxxxxx>
>
> Hello Folks.
>
> I am currently in the process of rebuilding my 6MOT
> stack as I wired the primary side with a too thin gauge
> wire and am expecting significant losses there.
> So I drained the oil, but now I have two more questions:
>
> Should I remove the shunts? I do not need more current,
> but I fear with the shunts in place I might experience
> other negative effects, as lower output voltage or
> increased no load current draw.
> With no load it pulls around 8 amps which sounds pretty
> much to me, or am I missing something?
>
> The other thing is, I fear one MOT might have experienced
> a breakdown of the insulation. But when I do a low voltage
> test, everything works fine. ( However, I have no way to
> measure the secondary voltage with 230V in, only with 12Vin )
> I believe it might be possible, that the insulation broke down,
> but after switching off, the oil caused some kind of "selfhealing"
> action.... probably just wishfull thinking.
> The physical arrangment makes it impossible to access the
> possibly affected mot, so I have to disassemble the stack first.
> Is there a way to test the single xformer alone outside the stack
> for this kind of failure mode?
> Unfortunately I do not have access to more MOT's, otherwise
> I would simply change the one transformer...
>
> Thanks a lot in advance
>
> regards
>
> Christoph Bohr
>
>