It sounds to me like you are running on, or beyond, the limits of derating.

Bob Swinney
"stanley baer" wrote in message
...
I wired up the single phase 240-600v 1750VA transformer to my used AC TECH
2 hp VFD (with three phase 600V input)to power my 1 Hp Bridgeport this
morning. It works, though it causes a lot of radio inteference. I only
ran it for a few minutes and not under load so I don't know if the
transformer will heat up to much.

Before I do more testing I am going to build a metal enclosure for the
transformer and possibly build in a cooling fan.

stan

I wired up the single phase 240-600v 1750VA transformer to my used AC
TECH 2 hp VFD (with three phase 600V input)to power my 1 Hp Bridgeport
this morning. It works, though it causes a lot of radio inteference. I
only ran it for a few minutes and not under load so I don't know if the
transformer will heat up to much.

Before I do more testing I am going to build a metal enclosure for the
transformer and possibly build in a cooling fan.

stan

On Fri, 24 Jun 2005 12:35:02 -0500, stanley baer
wrote:

I wired up the single phase 240-600v 1750VA transformer to my used AC
TECH 2 hp VFD (with three phase 600V input)to power my 1 Hp Bridgeport
this morning. It works, though it causes a lot of radio inteference. I
only ran it for a few minutes and not under load so I don't know if the
transformer will heat up to much.

Before I do more testing I am going to build a metal enclosure for the
transformer and possibly build in a cooling fan.

stan


Stan..something to keep in mind when running a VFD.

AM radio no longer exists in your shop for the most part.

shrug

Gunner

"Considering the events of recent years,
the world has a long way to go to regain
its credibility and reputation with the US."
unknown