Re: pre planning...Re: Requiem for a Piglet: I am a murderer

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "David Sharpe by way of Terry Fritz <twftesla-at-qwest-dot-net>" <sccr4us-at-erols-dot-com>

Dave, All

I heartly agree with this comment.  My PT's in my 10kVA controller
were checked for the following parameters:
turns ratio, L, R, Vdrop at nameplate, Vdrop at %baseload to 250%
Full Power Test by voltage buck methodology.
Results of this testing was posted 2-3 years ago.  Performed
same testing on wattmeter, and resistance/impedance ballast
system.  Tests are reproduceable, and if a shift is found will
indicate cause of system problems.  Even MMC's should
be tested by LCR and DC high pot leakage I at various Vinputs.

There are a lot of reasons (complancency leading the pack) why
we don't perform these tests, but it is critical especially on new
systems to establish a  _baseline_ , to determine trends, equipment
wear, or impending failure... based on facts, not hand waving
or opinions.

Regards
Dave Sharpe, TCBOR
Chestefield, VA. USA

Tesla list wrote:

> Original poster: "davep by way of Terry Fritz <twftesla-at-qwest-dot-net>"
<davep-at-quik-dot-com>
>
> Maybe everyone does this:
>         A cautious approach is to log in the notebook
>         'all' parameters of a piece of equipment,
>         BEFORE using it...  For a transformer:
>                 Primary and secondary resistances.
>                 resistances to case.
>                 reactances if such metering is
>                 available.
>                 etc...
>
>         Useful in calculation, helpful in
>         troubleshooting.
>
>         best
>         dwp
>
> ...the net of a million lies...
>         Vernor Vinge
> There are Many Web Sites which Say Many Things.
>         -me