ST performance [RE-wrenches]

Bill Brooks billbrooks7 at earthlink.net
Thu Jul 5 08:50:18 PDT 2001


Bob-O,

No assumption. One 120-Volt inverter, pick the lower voltage side of the
240-Volt. Two 120-Volt inverters, one on each side of the split-phase.

We have over 1,000 120-volt single inverters on the grid in California--come
visit some time.

Bill.

-----Original Message-----
From: Bob-O Schultze, Electron Connection
[mailto:econnect at snowcrest.net]
Sent: Thursday, June 28, 2001 9:35 AM
To: RE-wrenches at topica.com
Subject: RE: ST performance [RE-wrenches]


Bill,
You assume two or more inverters, not always, or even mostly,  the case.
Bob-O


>Bob-O
>
>120-Volt inverters are put on opposite sides of a 120/240 breaker panel in
>the same balanced way that we take loads in a balanced manner from a
>busbar--no problems. All house circuits get the benefit regardless of which
>side of the busbar the systems are on. KWh's are the same whether produced
>by a 120-Volt source or a 240-Volt source.
>
>Bill.
>
>
>-----Original Message-----
>From: Bob-O Schultze, Electron Connection
>[mailto:econnect at snowcrest.net]
>Sent: Wednesday, June 27, 2001 1:56 PM
>To: RE-wrenches at topica.com
>Subject: Re: ST performance [RE-wrenches]
>
>
>Joel, etal,
>Ah, this one was a refurbished freebie from AES to Humboldt State
>University. Probably was the first generation, but thanks to AES
>anyway. Good to hear they have changed things, but the docs still
>bite. Nothing about timeouts, nothing about powering up the ac side
>first THEN the dc side, which is what we had to do to make the thing
>go. Pretty poor all around.
>In this application, we we using ASE 300W behemoths (also donated, so
>no one is complaining but my back). Four of those puppies in series
>were 1200W @ 48V and 56' away from the inverter. I ran in #6 CU and
>had no place to put it without getting into the GFP directly. An
>unusual case, for sure, but I could easily see situations where that
>kind of distance between smaller PVs and the inverter could require
>#8 or #6 CU for voltage drop considerations. I think #6 terminals
>would do it as inputs to the combiner board or whatever. The AC out
>terminals were too close together for comfort and barely accommodated
>the #10 solid CU I was using. Since these are 120vac inverters and
>the distance to the disco and mains panel could be great as well, I'd
>like to see #6 terminals there as well. Wire is cheap. Voltage drops
>suck. I've got a concern about the 120vac output as well. The best
>and highest use for that power is on-site. An AES inverter (or a
>stack of them for that matter) feed a single CB in the mains panel.
>That means that only half the house circuits get the benefit. Hmmmm.
>Bob-O
>
> >We installed a GC1000 from the first production run and it is doing
> >fine. Since
> >then, the GC1000 terminals have been beefed up. Bob-O, what's your
>recommended
> >size?

- - - -
To send a message: RE-wrenches at topica.com

Archive of previous messages: http://www.topica.com/lists/RE-wrenches/

List rules & etiquette: http://www.mrsharkey.com/wrenches/etiquete.htm

Check out participant bios: www.mrsharkey.com/wrenches/index.html

Hosted by Home Power magazine

Moderator: michael.welch at homepower.com


- - - -
To send a message: RE-wrenches at topica.com

Archive of previous messages: http://www.topica.com/lists/RE-wrenches/

List rules & etiquette: http://www.mrsharkey.com/wrenches/etiquete.htm

Check out participant bios: www.mrsharkey.com/wrenches/index.html

Hosted by Home Power magazine

Moderator: michael.welch at homepower.com

==^================================================================
EASY UNSUBSCRIBE click here: http://topica.com/u/?bz8Qcs.bz9JC9
Or send an email To: RE-wrenches-unsubscribe at topica.com
This email was sent to: michael.welch at homepower.com

T O P I C A -- Register now to manage your mail!
http://www.topica.com/partner/tag02/register
==^================================================================




More information about the RE-wrenches mailing list