Re: [RE-wrenches] generator surge on outback system

[dan]

Hey Kirk... I'd check in with Caty or Sandra at Outback... let us know?? db

Dan Brown
Foxfire Energy Corp.
Renewable Energy Systems
(802)-483-2564
www.Foxfire-Energy.com
NABCEP #092907-44

-------- Original Message --------
Subject: [RE-wrenches] generator surge on outback system
From: "Kirk Herander, VSE" <k...@vtsolar.com>
Date: Thu, August 12, 2010 8:22 am
To: "'RE-wrenches'" <re-wrenches@lists.re-wrenches.org>

Hello,

I have an off-grid customer with dual Outback inverters and a Kohler 8.5 RES generator. When the inverter automatically shuts off the generator, we see quite a surge (greater than 300 vac) in the house, before the switch to batteries takes place. This trips their arc-fault breaker and causes their flat-screen tv to power off and then back on. The generator people say this shutoff surge is not uncommon (translation – they don’t know what to do about it), although I’ve never seen it to this extent.

 

Is there a way to automatically disconnect the generator before the turn-off signal is issued, through programming? Does the programmable cool-down function actually make the switchover before turning off the generator? Or does it merely disable battery charging and do the turnoff / switchover at the end of the cool-down period?

 

Kirk Herander

Vermont Solar Engineering

802.863.1202  fax 802.863.7908

VT RE Incentive Program  Partner

NYSERDA Incentive-eligible Partner

NABCEP^TM    Certified Installer

 

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