Hi all.
I have a (H1-5.0.E), and I have noticed that the installer has attached a CT to the inverter port CT1 but has also connected a Chint meter to the inverter meter port ( a CT is also connected to the Chint meter). The manual says that a CT or a meter is required for export control and in the inverter menu the “meter” has been selected.
Does this mean that I can safely disconnect the CT that is directly connected to the inverter?
You don’t need both but you need to absolutely sure which is providing the metering for your inverter.
Is it possible the installer wired the CT1 pair up but never attached the CT clamp at the other end to the live feed, they may have intended to use it but the distance was too far for a CT clamp.
If you look in the inverter Settings you will be able to see what the inverter thinks is connected, go into Settings (password is 0000 - just press enter 4 times), Feature, Meter/CT, Set it will either say >CT< or >Meter_1P< - don’t change anything, just press the exit button (the far right button of the 4). This will tell you which it is using.
Is it possible the installer wired the CT1 pair up but never attached the CT clamp at the other end to the live feed, they may have intended to use it but the distance was too far for a CT clamp.
If you look in the inverter Settings you will be able to see what the inverter thinks is connected, go into Settings (password is 0000 - just press enter 4 times), Feature, Meter/CT, Set it will either say >CT< or >Meter_1P< - don’t change anything, just press the exit button (the far right button of the 4). This will tell you which it is using.
Hi thanks. Yes the setting says meter. Looking at the wiring at the consumer side I can also see two clamps. The black one can be traced to the Chint meter and the white one is goes straight to the inverter.
Looks they started with a CT clamp which is the default and comes with the inverter and then chose to change the a meter - that’s usually a distance or accuracy decision because the meter would be extra cost.
I think start by un-clipping the white one and leave it off for a while to make sure nothing is affected, and then remove it later.
I think start by un-clipping the white one and leave it off for a while to make sure nothing is affected, and then remove it later.
Thanks for the help Dave.
I’ve removed the clamp that goes direct to the inverter from the live cable and I can still see the grid readings in the app and home assistant. I’ll leave it like that for now for a few days as you suggest and remove next weekend if all ok.
I’ve removed the clamp that goes direct to the inverter from the live cable and I can still see the grid readings in the app and home assistant. I’ll leave it like that for now for a few days as you suggest and remove next weekend if all ok.