Ground voltage
- Thread starter Edsashley
- Start date
The inverter is hybrid so it acts as the charge controller also if this is also all in one unit then yes this is what I mean. By bonding I mean equipotential bonding. So I have bonded (connected) the battery earth terminal with the inverter earth terminal, the solar panels to the inverter earth terminal and then the inverter earth terminal to the main house earth in the CU downstairs. Opening the breaker gives me 0V at the inverter side of the breaker.
With respect to earth.
John Frum
Tell me your problems
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- Nov 30, 2019
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By earth you mean the planet?
Earth = ground
John Frum
Tell me your problems
- Joined
- Nov 30, 2019
- Messages
- 15,233
Hybrid is a very contextual word.
What do you mean by hybrid?
Ok, presumably to the planet.
Solar Guppy
Red Cobra Guppy
There is nothing wrong with your unit, that is the expected voltage, and isn't ground, it is the ~mid-point of the HV bus.
These are non-isolated units, so PV and Battery wires are NOT grounded, just the equipment frames are.
These are non-isolated units, so PV and Battery wires are NOT grounded, just the equipment frames are.
This is 0V when double pole disconnect open.
So not actually ground voltage. Great. Thanks
Solar Guppy
Red Cobra Guppy
it is important that you do DO NOT GROUND PV or BATTERY +/- or you will permanently damage the unit
Yes, values are expected running conditions. The Chinese come up with odd wording and things are lost in translation.
Yes, values are expected running conditions. The Chinese come up with odd wording and things are lost in translation.
Yes. When I say I’ve earthed the battery and solar panels I do just mean their frames.
I know, I’ve had a lot of issues with setting up as I wasn’t supplied with a manual (not that I think it would be any good), only supplied with an installation guide which was also not great. Still unsure if it is fully optimised.
While I have you though I notice you have the same inverter so wondering if you could answer this. I am looking to install an immersion water tank heater (to use excess power generation) this will require a (solar diverted/PV optimiser or some other name). If you are not aware they measure the incoming cables and divert to the hot water tank if power is being exported. So my question is, as the solis hybrid inverter is already measuring the exported power is there a function that will allow this without adding the PV optimiser. Possibly by using the backup port to power the tank element when export is detected.
Solar Guppy
Red Cobra Guppy
I'm in the US, and have the RHI-HVES 5G, which is a high voltage version of the 5G. Software / operation wise they are very similar.
For manual, see attached, downloaded from https://www.ginlong.com/uploads/file/Solis_Manual_RHI(3-5)K_ENX_V1.9_gl.pdf
Also attached is my interpretation of the RHI HVES operational features, this may help in your understanding the modes.
Since the battery charges only from the solar ( if charge from grid is turned off ), just using self consumption with the export CT's should do what you want, and you can set thresholds for example based on SOC when to stop draining the battery if the water heater using to much.
With the export CT's all loads on the main panel ( we have different terms, where your circuit breakers are located ) will provided the feedback to cover home loads using PV and Battery as necessary.
This is a very complex unit, that for just about any possible configuration one can come up with it can work as needed. You are going to need to educate yourself as installers likely do not have the time to learn all the features of every device they sell and or install.
That’s great. Thanks for the help and the information. I’ll look into that.
Hi I’m in the uk and just installed the same as you and I too have a ground voltage of 193.3v - thanks for raising this, I’m not going to waste any more time looking for panel insulation resistance issues.
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