Mark

Neb. On top of the Merson DC Disconnect I use these fuses on each of my strings before the busbar. Personally I would mount the busbars above the bank below the DBboards. You can then make each string connection as short as possible. Top same length as bottom though. You can then run really thick cable between the BusBars and the Merson. I have a separate HA02 for each string. Initially I also had one across 2 strings but I have found that they perform better with an HA02 per string. Less wires and fuses as well AND the HA02 are only rated @ max 10A so given your loads and inverter one will not be enough for 2x strings. (I believe).

@superdiy has good settings above... Axpert (voltage) settings 05 - Battery type - USE 26 - Bulk charging voltage - 58.4V (the maximum on the Axpert) 27 - Float charging voltage - 54.8V I would add: 12 = 48V 13 = 54V 29 = 47V Regards Mark

https://openenergymonitor.org/emon/node/2869 Have a look at the above link... Sent from my SM-G800F using Tapatalk

Why don't you set the Axpert to UTL and just run like that for a few days and let the batteries charge and also be held at 54V. ie no load on batteries for a few days. The see if that changes the situation. I don't think you have enough panels to keep the batteries charged. Do you have a battery monitor (Victron BMV 700/2) - that would allow you to actually see the state of the batteries. Search for BMV on the site. Lots of discussion on this issue.

To WU and also my own web page.

Hi Paul I use Cumulus for my station. The new CumulusMX may have EMON support and also has a Linux version if I remember correctly. http://sandaysoft.com/forum/viewtopic.php?f=27&t=12908#p101008

We need pictures Gerald!!

I think its more about efficiency. Like not servicing the old Mazda and having higher and higher fuel usage... makes me irritable BUT: I plan to have more strings facing NORTH, EAST and WEST. Get as much SUN TIME and hopefully "extend" the time I don't use batteries.

Thanks - !!

Sorry Manie - I think the 0.007% is very low for a MPV. Maybe just me being paranoid? The value from the BMV is Mid Point Deviation (DM) in V. I assume you calc the %.

Inverter Values Tab

Can you check Battery Midpoint on Screen 4. Is it V or % being displayed.[emoji2] Sent from my SM-G800F using Tapatalk

On the positive cable at the point I added the extension. I don't know if they HA02 is fused. A sealed unit so don't want to take a chance.

I extended my cables and when I did that I added 5a fuses for safety.

Nice panels...[emoji12] Sent from my SM-G800F using Tapatalk

Very Nice Chris!! Can you update your signature to add the installation details... always good to refer to when you post a message Thanks Mark

You are sorted Mike What sort of daily kwh are you getting from the turbine.

Hi Peter Lovely set of batteries (I am envious!!) What panels how many and how are the wired for your system? Thanks Mark

Thanks Gerald!!

Advanced donkey boiler driving steam turbine and genny... guessing here...

Chris I use one of these (40A) and plan to add 3 more when I redo the DB. One for each phase plus an extra for outbuildings... http://www.hager.sg/energy-distribution/control-signaling/modular-isolating-changeover-switches/5264.htm Regards Mark

Camel thanks! Price of the 700?

Any updates... keen to see how things go...especially battery soc overnight. Sent from my SM-G800F using Tapatalk

How are you going to raise and lower it?

Hi Gerald Spoke to an Eskom friend. They need to be as close to 240V as possible with a 10% deviation allowed.