Re: Good brand of 3KW 2:1 transformer?

"RedFox" <(E-Mail Removed)> wrote in message
news:gMfze.14198$(E-Mail Removed) link.net...
> I want to buy a 3KW 2:1 transformer and have seen one at a very
reasonable
> price - $120.
>
> PowerBright brand - made in China
>
> 220-240 volt to 110-120 volt AND from 110-120 volt to 220-240 volt.
> Features
> FREE Grounded Adapter Included ($3 Value)
> On and Off Breaker Switch
> Fuse protected
> 2 Spare Fuses Included
> 1 Year Parts and Labor Warranty
>
> Specifications
> Capacity 3000 watts
> Input 110/200/220/240 Volt
> Output 110/220-240 Volt
> Dimensions (W x H x D) 7.2 x 6.0 x 9.8 in.
>
> The specs are pretty sparse.
>
> Are these transformers typically the usual primary and secondary windings
> on a steel core, with no electronics? If so, they should be simple and
> reliable. With
> electronics, their reliability could be questionable, like the
Chinese-made
> Altec Lansing
> speaker system I bought a couple of years ago that went belly up. They
have
> no
> replacement components and gave me the number of .the replacement model. I
> told them
> what to do with it ;-)
>
> I have also seen some great looking Chinese made furniture recently.
Looked
> exactly like mahogany
> but most of it was CARDBOARD!!!
>
> I would rather pay more for a trafo with a good reliable brand. .
>
> Help appreciated
>
> TIA
>
> rf

A good brand, Acme, Square D, CH now Eaton, GE and
http://www.allbreakers.com/store.asp...d_tran_control
As for the price, that will probably be another issue.

I missed the intended use so to speculate more useless.

"SQLit" <(E-Mail Removed)> wrote in message
news:B7hze.42$_(E-Mail Removed)...
>
> "RedFox" <(E-Mail Removed)> wrote in message
> news:gMfze.14198$(E-Mail Removed) link.net...
> > I want to buy a 3KW 2:1 transformer and have seen one at a very
> reasonable
> > price - $120.
> >
> > PowerBright brand - made in China
> >
> > 220-240 volt to 110-120 volt AND from 110-120 volt to 220-240 volt.
> > Features
> > FREE Grounded Adapter Included ($3 Value)
> > On and Off Breaker Switch
> > Fuse protected
> > 2 Spare Fuses Included
> > 1 Year Parts and Labor Warranty
> >
> > Specifications
> > Capacity 3000 watts
> > Input 110/200/220/240 Volt
> > Output 110/220-240 Volt
> > Dimensions (W x H x D) 7.2 x 6.0 x 9.8 in.
> >
> > The specs are pretty sparse.
> >
> > Are these transformers typically the usual primary and secondary
windings
> > on a steel core, with no electronics? If so, they should be simple and
> > reliable. With
> > electronics, their reliability could be questionable, like the
> Chinese-made
> > Altec Lansing
> > speaker system I bought a couple of years ago that went belly up. They
> have
> > no
> > replacement components and gave me the number of .the replacement model.
I
> > told them
> > what to do with it ;-)
> >
> > I have also seen some great looking Chinese made furniture recently.
> Looked
> > exactly like mahogany
> > but most of it was CARDBOARD!!!
> >
> > I would rather pay more for a trafo with a good reliable brand. .
> >
> > Help appreciated
> >
> > TIA
> >
> > rf
>
> A good brand, Acme, Square D, CH now Eaton, GE and
> http://www.allbreakers.com/store.asp...d_tran_control
> As for the price, that will probably be another issue.
>
> I missed the intended use so to speculate more useless.
>
The dimensions scare me. This looks pretty small for a 3Kw 120/240V unit. I
suspect that it is an autotransformer (core and windings equivalent to a
1.5KW unit - see Hammond's 1.5Kw 2 winding unit which is about the same
size!). May be fine but if so there is no isolation between the 110 and 220V
sides.

(PS Hammond units do what was required but the ones I've seen weren't noted
for good efficiency or regulation -skimp on material to keep capital cost
down)
--
Don Kelly
(E-Mail Removed)
remove the urine to answer