Solar charging much higher than AC Loads but batteries discharging

After waiting for the reseller to Have Time to look at it an RMA has been lodged & as its close to Christmas could take some Time

REPLY

The Quattro returned from RMA, and guess what? It’s all good! The internal cabling was reconnected, and there were no direct faults found. There’s a slight suspicion that the solar controller might have been the culprit, but I’m not sure how to explain that.

Anyway, I put the Quattro back into service, and it’s running smoothly without any issues. The wiring connections are the same as before, except I increased it to 50mmSq cable (still Orange with Red/Black Heat-shrink ends to identify polarities

50mm Sq Welding Cable

Used for welding power & switchboard applications. Consists of high quality copper wire stranding & has double insulation for better resistance in heavy working conditions.

Features

  • Double Insulated
  • Highly Flexible
  • Meter Marked
  • Abrasion Resistant Outer Layer

Applications

  • Suiting Mine Sites
  • Welding Generators
  • Electrical Switchboards

Specifications

Application: For use with arc welding equipment rated in accordance with AS 1996. Suitable for glanding.

Conductor: Plain annealed coper (AS/NZS 1125)

Insulation / Sheath: Nitrile-Butadine-PVC Copolymer (TP-90, met RoHS)

Voltage: 0.6/1.0KV

Standards: AS/NZS 1995

|Part No|Nom Area mm2|Stranding No/mm|Nom. 0/D mm|Nom Insulation Thickness mm|Nom Sheath Thickness mm|Amp Rating 100% duty cycle|Amp Rating duty cycle|Amp Rating 3 duty cycle|Maximum Resistance at 20°C 0/Km|

|ZW50|50|1561/0.20|13.6|1|1.2|250|320|450|0.386|

Oh, and I also upgraded to a smart shunt, and it seems to be working great! It’s measuring the voltages and currents accurately.

1 Like

What load of nonsense why are you telling lies? I am running 3 ESS with MPPTs and no shunts. You don’t need a shunt. The multiplus is excellent at estimating the SOC. It looks like he has a fairly small DC load that was disconnected, so it should just work.



1 Like