Re: [RE-wrenches] combiner bus bar for Sunny Tower DC input?

Hi Kirk, The Sunny Boy inverters also have a pair of lugs for a single conductor pair coming in from the array. They are meant to be used if you have an external combiner. No bus bars as you describe are needed. Brian Teitelbaum AEE Solar From: re-wrenches-boun...@lists.re-wrenches.org [mailt

Re: [RE-wrenches] combiner bus bar for Sunny Tower DC input?

Kirk: This sounds like a bad idea: Combing PV strings and then splitting them and recombining them (what you essentially described, if I understand). You need to bypass the built in fuses. Never having done this, I can't offer advice on how to do so, but I am pretty sure your plan is flawe

[RE-wrenches] combiner bus bar for Sunny Tower DC input?

Hello, The Sunny Tower has four individual fuse holders on the DC input of each inverter. I am combining the array output for each inverter in a combiner box before the tower, so there is only a single positive, negative, and gnd going to each inverter's DC input. I want to fan this input out t

Re: [RE-wrenches] dry battery issue

Hi Chris, There's some good advice on the Surrette website, both in their FAQ, troubleshooting and solar battery user's manuals. http://www.surrette.com/content/tech-faqs#dry http://www.surrette.com/content/activating-instructions-dry-charged-batteries-600?phpMyAdmin=0610e516bf803196b5feee0b1ad65

[RE-wrenches] dry battery issue

Dear Wrenches: I have a customer who most likely has a dead cell in his battery bank and wants to replace it with a dry replacement battery he has on hand. The battery bank is made up of (24) 2ks-33PS batteries in series for a 48 volt system. I haven't activated a dry battery before and expect

[RE-wrenches] Strange voltage readings, power quality

Mac, First time poster here, sounds like in your original configuration you were loading all inverters on Vb. My suggestion would be to balance the load evenly across all three phases (7.5 - Va-Vb, 7.5 Vb-Vc, 10.0 Va-Vc). It is not perfect, but this may balance out the system when loads are co

[RE-wrenches] : Strange voltage readings, power quality

Mac, First time poster here, sounds like in your original configuration you were loading all inverters on Vb. My suggestion would be to balance the load evenly across all three phases (7.5 - Va-Vb, 7.5 Vb-Vc, 10.0 Va-Vc). It is not perfect, but this may balance out the system when loads are com

Re: [RE-wrenches] intermittent battery problem; ...Battery Sulfation

Ron, What comes to mind for me is that Surrette 5000 series batteries like to have a regular charge of C10. KS25 cells are rated for 1350 ah, creating a need for a somewhat regularly occurring charge of 135 amps. I do believe the batteries are not ever getting that, except for very rare occasio