Re: Ebay Pole Pigs

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

Original poster: "Dr. Resonance" <resonance-at-jvlnet-dot-com> 


The reason is a pole pig does not see short-circuit operation in power
distribution applications.

In a TC circuit when the sparkgap fires the power xmfr is, for a short time,
in a direct short circuit.  External current limiting must be provided as
the short circuit current draw for a standard pole xmfr is 733 Amperes.

Both pole and potential xmfrs require either inductive or resistive external
ballasting under short circuit conditions.

Dr. Resonance

 >
 > "This transformer has no current limiting and MUST be used with a limiter
of
 > some sort! "
 >
 > for normal pig operation a current limiting  ballast would never be
needed.
 >
 > ---Eric
 >