Inverter protection [RE-wrenches]

[allan]

More...
    Heinemann CD breakers are available up to 80A, I believe.  Rainshadow
Solar at 360 376-5336 (solar at rockisland.com) carries them; $200 minimum
purchase normally.

Allan @+E
-----Original Message-----
From: Kurt Nelson, SunWise <sunwise at win.bright.net>
To: RE-wrenches at topica.com <RE-wrenches at topica.com>
Date: Monday, December 04, 2000 11:01 AM
Subject: Re: Inverter protection [RE-wrenches]


>Greetings Doug,
>
>The DC250 does have knockouts for up to four other DC breakers.  I
>believe the largest breaker designed for these knockouts is 60 Amp.
>Would work out fine for the PV's if you are bringing your two arrays in
>as two sub-arrays and not on one set of home run wires (2 breakers).  A
>48 volt, 3,000 watt wind machine would need a larger breaker than 60
>amps so I can't help you there, but any time I am using a DC250, I
>always bring the PV's into one of these breakers (15 - 60 Amp) with the
>battery connection then made on the bottom (battery) side of the main
>inverter breaaker(s).  This way you can such down the PV's and Inverters
>independently and the inverters (and any DC loads) will never see open
>circuit voltage from the PV's.
>
>Good luck -- Kurt Nelson
>
>
>Doug McCorkle wrote:
>>
>> I have a question for the expertise of this group.  We are in the final
>> throws of completing a system (2 racks of 4 ASE 300W modules on trackers
and
>> 3000W Whisper (I think), 2 Trace 5548s for 240V on a Trace Power Board,
>> about 2000 Ahr battery bank, 20Kw generator, purchased as a package from
>> Kiocera ("It will take an electrician only a few hours to get it up and
>> running!")).  The power inputs (PV and wind) are connected to the
inverter
>> side of the 250A battery disconnects, which is our question.  It seems to
>> leave the inverter unprotected - you're able to isolate the batteries,
but
>> to isolate the inverter you need to turn off the PV and wind input
>> separately.  This would seem to make sense, but it seems that an
inattentive
>> or inadequately trained homeowner might easily turn off the battery main,
>> thinking they were disconnecting power to the inverter, when in fact the
PV
>> and wind would still be powering the units.  We actually did this (left
only
>> the wind connected), and one of the inverters smoked.  So, I would
>> appreciate any thoughts and/or remedies.
>> Doug McCorkle
>> Sunnyside Solar
>>
>> - - - - - - -
>> To send a message:
>>  RE-wrenches at topica.com
>>
>> The archive of previous messages:
>>  http://www.topica.com/lists/RE-wrenches/
>>
>> To unsubscribe send a message to:
>>  RE-wrenches-unsubscribe at topica.com
>>
>> To check out the other RE-Wrench participants:
>>  www.mrsharkey.com/wrenches/index.html
>>
>> Hosted by Home Power magazine:
>>  www.homepower.com
>>
>> For info contact list moderator by email:
>>  michael.welch at homepower.com
>>
>> ___________________________________________________________
>> T O P I C A  http://www.topica.com/t/17
>> Newsletters, Tips and Discussions on Your Favorite Topics
>
>
>- - - - - - -
>To send a message:
> RE-wrenches at topica.com
>
>The archive of previous messages:
> http://www.topica.com/lists/RE-wrenches/
>
>To unsubscribe send a message to:
> RE-wrenches-unsubscribe at topica.com
>
>To check out the other RE-Wrench participants:
> www.mrsharkey.com/wrenches/index.html
>
>Hosted by Home Power magazine:
> www.homepower.com
>
>For info contact list moderator by email:
> michael.welch at homepower.com
>
>___________________________________________________________
>T O P I C A  http://www.topica.com/t/17
>Newsletters, Tips and Discussions on Your Favorite Topics
>

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

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

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

To check out the other RE-Wrench participants:
 www.mrsharkey.com/wrenches/index.html

Hosted by Home Power magazine: 
 www.homepower.com

For info contact list moderator by email:
 michael.welch at homepower.com

___________________________________________________________
T O P I C A  http://www.topica.com/t/17
Newsletters, Tips and Discussions on Your Favorite Topics