[RE-wrenches] TL inverter with long DC Feeder

[william at millersolar.com]

Ryan:

 

Thanks but the maximum is 3 circuits and we have 4.

william

 

From: RE-wrenches [mailto:re-wrenches-bounces at lists.re-wrenches.org] On Behalf Of Ryan Mayfield
Sent: Tuesday, October 7, 2014 11:40 AM
To: 'RE-wrenches'
Subject: Re: [RE-wrenches] TL inverter with long DC Feeder

 

Eaton has a line of disconnects that may fit the bill:

 

http://www.eaton.com/Eaton/ProductsServices/Electrical/ProductsandServices/ElectricalDistribution/SwitchesandDisconnects/SolarDisconnects/index.htm#tabs-2

 

Ryan

 

 

 

From: RE-wrenches [mailto:re-wrenches-bounces at lists.re-wrenches.org] On Behalf Of August Goers
Sent: Tuesday, October 07, 2014 11:30 AM
To: RE-wrenches
Subject: Re: [RE-wrenches] TL inverter with long DC Feeder

 

William,

 

I see now from the separate post from Michael Kelly of Solectria that indeed you cannot combine your two strings with this inverter. I think that leaves you stuck with four separate disconnect switches unless someone on this list knows of a four pole DC rated disconnect switch. Or, you’ll have to switch inverters. I have never installed these Solectria inverters so I don’t know much about them. 

 

Best,

 

August

Luminalt

 

From: RE-wrenches [mailto:re-wrenches-bounces at lists.re-wrenches.org <mailto:re-wrenches-bounces at lists.re-wrenches.org> ] On Behalf Of William Miller
Sent: Tuesday, October 07, 2014 8:28 AM
To: RE-wrenches
Subject: Re: [RE-wrenches] TL inverter with long DC Feeder

 

August:

 

I have been told I can't combine upstream of the inverter. 

 

William


Miller Solar


On Oct 7, 2014, at 8:03 AM, August Goers <august at luminalt.com <mailto:august at luminalt.com> > wrote:

William,

 

We have bumped into similar dilemmas when needing remote DC disconnects with TL inverters. I believe the Solectria you are using has two MPPTs? Ideally, you would keep each string separate to benefit from the dual trackers – this would mean four DC disconnects if you went with a standard product like a Square D HU361RB. If you combine each of the two strings out at the array(s) then you could get away with two disconnects, one for each inverter. Neither option is ideal.

 

Best,

 

August

 

Luminalt

 

 

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