of
the more complex aspects of power systems and
power equipment design.
Hope this helps.
Dan Lepinski
Sr. Engineer
Exeltech
P.S. Thanks for being a long-time Exeltech customer.
Much appreciated.
--- On Mon, 7/25/11, R Ray Walters wrote:
> From: R Ray Walters
> Subject: Re: [RE-wren
enches-boun...@lists.re-wrenches.org] On Behalf Of Mark Frye
Sent: Monday, July 25, 2011 9:11 AM
To: 'RE-wrenches'
Subject: Re: [RE-wrenches] Efficient step up, down transformers Lars, Scary
stuff. I worked with a system similar to this and went with big wire. The
problem with xfrms is tha
es.org
[mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf
Of lars Ortegren
Sent: Monday, July 25, 2011 7:43 AM
To: re-wrenches@lists.re-wrenches.org
Subject: [RE-wrenches] Efficient step up, down transformers
Wrenches,
I recently installed three "ultra
-efficient"
watts - not kilowatts.
>
> If he's in fact measuring real power somehow, and there's
> no load on the transformer secondary, he's got a defective
> transformer.
>
>
> Dan
>
>
>
> --- On Mon, 7/25/11, R Ray Walters wrote:
>
> From: R Ray
ere's
no load on the transformer secondary, he's got a defective
transformer.
Dan
--- On Mon, 7/25/11, R Ray Walters wrote:
From: R Ray Walters
Subject: Re: [RE-wrenches] Efficient step up, down transformers
To: "RE-wrenches"
Date: Monday, July 25, 2011, 12:20 PM
I th
I thought (based a previous thread) that we needed to be concerned with VA
output of inverters, not wattage, at least on the transformer based machines
like the SW.
I realize this wouldn't be an actual load if on grid.
In these situations, I just measure DC amps into the inverter to determine the
n...@lists.re-wrenches.org
[mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Mark
Frye
Sent: Monday, July 25, 2011 11:11 AM
To: 'RE-wrenches'
Subject: Re: [RE-wrenches] Efficient step up, down transformers
Lars,
Scary stuff. I worked with a system similar to this and went
ed with no load connected is minimal.
Dan
Sr. Engineer
Exeltech
--- On Mon, 7/25/11, Mark Frye wrote:
From: Mark Frye
Subject: Re: [RE-wrenches] Efficient step up, down transformers
To: "'RE-wrenches'"
Date: Monday, July 25, 2011, 10:11 AM
_filtered #yiv12
tegren
Sent: Monday, July 25, 2011 7:43 AM
To: re-wrenches@lists.re-wrenches.org
Subject: [RE-wrenches] Efficient step up, down transformers
Wrenches,
I recently installed three "ultra -efficient" step up-down
transformers on an off grid micro grid project with a 1500&#
Wrenches,
I recently installed three "ultra -efficient" step up-down
transformers on an off grid micro grid project with a 1500' wire run. The
grid is powered by a an old SW4024(120v) output, stepped up to 480v, and
stepped down to 240v at two locations. I was told by the manufactu
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