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" <[email protected]>
To: "RE-wrenches" <[email protected]>
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" <[email protected]>
To: "'RE-wrenches'" <[email protected]>
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
[email protected]
Ph 323-258-8883, Mobile 323-839-6108, Fax 323-258-8885
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