RE: Megger test.

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

Original poster: "Loudner, Godfrey by way of Terry Fritz <twftesla-at-qwest-dot-net>" <gloudner-at-SINTE.EDU>

Hi Greg

The megger test is an insulation test. Without proof, I would say that most
USA tesla coil builders have pigs that are not reconditioned. One of the "as
is" units should be sufficient. Just make sure you have the line voltage to
supply the pig, and don't pick some outrageous secondary voltage like
30,000+ volts. A good secondary voltage is around 14,000 volts. Running a
tesla coil primary at 30,000+ volts involves a very expensive tank cap. By
the way, the potential transformers at the site you posted were very
interesting.

Godfrey Loudner  

> -----Original Message-----
> From:	Tesla list [SMTP:tesla-at-pupman-dot-com]
> Sent:	Thursday, October 04, 2001 9:32 AM
> To:	tesla-at-pupman-dot-com
> Subject:	Megger test.
> 
> Original poster: "Mr Gregory Peters by way of Terry Fritz
> <twftesla-at-qwest-dot-net>" <s371034-at-student.uq.edu.au>
> 
> Hey guys,
> 
> As afore mentioned, I priced a reconditioned pole pig at $1045 
> Australian. However, they will sell me an unconditioned unit for $500 
> Australian (about $250 US). They say the only test they will do on the 
> transformer is a megger test. What is a megger test? Is this a reliable 
> indication of the transformers integrity? Would you guys suggest saving 
> for the reconditioned unit or buying the "as is" unit? I figure I can 
> buy two of the "as is" uints for the price of 1 reconditioned unit, and 
> the chances of both being duds are minimal. What do you think?
> 
> Cheers,
> 
> 
> Greg Peters
> Department of Earth Sciences,
> University of Queensland
> 
> Phone: 0402 841 677
> 
> 
>