[RE-wrenches] UL and Grid-tied Battery Back Up Systems

[Joel Davidson]

Hello Peter, It was good to see you at the LADWP Commissioners Meeting even 
though we didn't have time to talk. I told Mr. Benyamin, LADWP AGM, at the 
meeting that there were no safety issues regarding grid-tie PV system with 
batteries because the inverters were IEEE 929 compliant. He said he was 
concerned about batteries being added to a PV system after the initial 
utility inspection. I told him that batteries can not be added to a 
non-battery inverter. He said it is being done so the conversation ended. 
How many people are adding battery inverters later? I've done hundreds of 
grid-tied systems and never added a battery inverter and battery bank after 
the initial installation.

Wrenches, are you adding batteries to non-battery grid-tied PV systems after 
the initial installation? If yes, what inverter and how do you deal with the 
inspector?

Joel Davidson

----- Original Message ----- 
From: "Joel Davidson" <joel.davidson at sbcglobal.net>
To: "RE-wrenches" <re-wrenches at lists.re-wrenches.org>
Sent: Tuesday, October 05, 2010 7:43 AM
Subject: Re: [RE-wrenches] UL and Grid-tied Battery Back Up Systems


> Peter,
>
> California utilities use to require operating steps (list not UL listing) 
> for all grid-tied systems in the interconnection application. A copy of 
> the operating steps from the equipment manual sufficed.
>
> Joel Davidson
>
> ----- Original Message ----- 
> From: "Peter Parrish" <peter.parrish at calsolareng.com>
> To: "'RE-wrenches'" <re-wrenches at lists.re-wrenches.org>
> Sent: Tuesday, October 05, 2010 4:05 AM
> Subject: [RE-wrenches] UL and Grid-tied Battery Back Up Systems
>
>
> Are there UL testing procedures for Grid-tied Battery Backup Systems, such
> as the Xantrex XW systems and the Outback GVFX systems? The reason for my
> inquiry is that the Los Angeles Department of Water and Power intends to
> require that "...applicants installing Battery Backups on their solar
> systems to submit an Operational Listing detailing a precise list of steps
> of what were to happen if the LADWP grid were to lose power."
>
> - Peter
>
>
> Peter T. Parrish, Ph.D., President
> California Solar Engineering, Inc.
> 820 Cynthia Ave., Los Angeles, CA 90065
> CA Lic. 854779, NABCEP Cert. 031806-26
> peter.parrish at calsolareng.com
> Ph 323-258-8883, Mobile 323-839-6108, Fax 323-258-8885
>
>
>
>
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