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Been trying to get my newly installed inverter to communicate via WiFi. Agent sent me two new dongles to try out. Meanwhile on Friday night the inverter pulsed down a couple of times, switching off my computer and NAS. Reset this more or less in the dark and as it was Friday night, stopped...

Various emails to/from EPEVER Support. The answer to my question was: "Yes, for your model can connect input and output neutral". Key issue seemed to revolve around the presence of the transformer in the pic. My model is exactly as the pic below. Anyway, I have connected ACIN Neutral to...

I have an EPEVER UP5000-HM8042 inverter. (220V) The inverter comes with Line and Neutral input terminals (from utility power) and separate Line and Neutral output connections for the solar system driven loads. (also a separate common Earth Connection). All my loads (inverter driven and...

A regular voltmeter is typically a very high impedance circuit. If it were not, the voltage drop in the leads would mean the voltage you were trying to measure would be false. So, typically no or almost no current flows in the leads of a voltage measuring circuit and therefore, the length of...

https://diysolarforum.com/threads/battery-cable-length.26289/#:~:text=It%20isn%27t%20time%20of%20flight%20we%27re%20matching%2C%20it%20is%20voltage%20drop%2C%20V%20%3D%20I%20x%20R... Surely the voltage drop between point 1 and point 2 is/must be exactly the same. If one cable is slightly...

Wow...this takes me back. Cables of equal length. Holy crow. Electricity travels pretty close to the speed of light which is fast. I recall all the old arguments in stereo forums over equal lengths of stereo speaker cable. Somewhere I must still have the ad for the special type of speaker...

I found Solar Tilt app pretty good. If your phone has GPS, it calculates your optimum panel angle based on your latitude and date. Cool feature is that you can turn your phone on it's side and it will show you the required angle. Place it on your panel to adjust your angle. I live 8deg north...

Given that you never seem to get the 'rated' wattage out of a PV panel for a variety of reasons (angle, partial shade, hazy sunshine, atmos pollution etc), maybe consider the highest wattage panel you can find. Your shed roof dimensions place a limit on how many panels you can install. 340W...

Really upset to read all this. Whilst we were communicating on a separate trivial issue I had with my inverter....little did I know you were going through all this pain and anguish. I had an electrical fire in a below ground swimming pool equipment room a few years back. Overheating...

I see a post re "Benefits of Three Phase AC Pumps for Solar Water Pumping". In that post, a VFD (variable frequency drive) unit is used to generate three phase 230V AC from a single phase supply. The single phase supply being from a single inverter. Just thinking out loud here, but I have a...

Update: Inverter had somehow 'locked up'. Agent switched battery type to Lead Acid and it reset itself. Set back to User and worked as normal. Unit on its way back to me. Believe a system 'reset' would also have worked.

Thanks K Frank. It's interesting that two things happened .... a lifepo4 cell failing and the battery charge/discharge function on the Revo ii failing. Logically you'd have to think that they were related...some kind of capacitive surge or momentary short circuit, I have no idea. Related would...

Update: It's not the fuse. Removed the top board to have a look. Also not the big capacitors to the right of the fuse (agent asked to check if they had exploded). My voltmeter had a flat battery, so voltages 60V etc., reported yesterday are not correct. LiFePO4 battery pack sitting at 48.5V...

I note in the photo of the mainboard (fhorst... thanks), what looks like a fuse on the +ve battery terminal .... circled in RED. Is this easy to replace? And a small correction to above item 9. With battery pack isolated, the inverter battery terminals measure 'some voltage' ... maybe up to...

Houston...we have a problem. My battery charge/discharge section seems to have stopped working. Some history: 1. All seemed to be fine charge/discharge up until a couple of days ago. 2. Battery type set at User, Bulk Charge at 58V, Float at 57. All seemed to be OK...charge/discharge...

Must be a lot of wimps out there... That's me on the ladder a couple of posts above with one under the arm...age 73. No need for a crew. Just do it.

@fhorst Thanks! I guess my thinking about a BMS was trying to understand the 'performance' of my battery bank. 16 x 200AmpHr x 48V is supposed to be 9600kWHr. I don't expect I'm getting all that, but how to know what I am getting out of the battery bank. Is it being used most effectively....?

I made a simple wooden frame and carried them up the ladder to the flat roof. 14 panels about 22/23Kg. (and I'm not a young man haha)

Thanks guys for the responses. I'll be back tomorrow with a few more questions. I guess one of the main ones will be does the Revo II "smart battery charge design for optimized battery performance" (words from the Manual 2.1 Features) mean that with the Revo II I do not get any real benefit...

Interesting thread. Some great info!! New to this forum & my first posting. I had intended a few more questions, but maybe this is enough for now. My system comprises 14 nominal 345W PV panels connected in two parallel strings of 7 panels per string. A Sorotec Revo II 5.5kW, 48V and 16 LifePo4...