[RE-wrenches] Relay for excess PV/ AC coupling

[Kent Osterberg]

There aren't many relays to choose from at 600 vots dc.

Here's an Omron relay rated for 400 volts 20 amps dc: 
http://www.omron.com/ecb/products/dry/3/g9eb-1.html
or 400 volts 60 amps dc: http://www.omron.com/ecb/products/dry/3/g9ea-1.html

The coil isn't 120 volts. But a common wall wart power supply would 
operate it.
About $150 at Mouser.com 
<http://www.mouser.com/Search/Refine.aspx?Keyword=G9EB>

You shouldn't have to switch at 600 volts. It should work just as well 
to short the lowest voltage pair of modules.

Kent Osterberg
Blue Mountain Solar, Inc.
www.bluemountainsolar.com
t: 541-568-4882

On 3/6/2013 1:26 PM, All Solar, Inc. wrote:
> Wrenches,
> I have been searching here with little luck.
> I am in need of a relay. Ideally, 120vac coil with 600vdc rated 
> contacts.  I am trying to limit the input to a GT inverter an AC 
> coupled sysetm. We need to drop off two strings to the inverter when 
> the grid is down, thus limiting the output of the inverter.
> P.S. Dave, I know you are looking into this when you are done traveling!
> Thanks in advance
> Jeremy
> All Solar, Inc.
> CO, USA
>

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