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Solis inverter & Landis & Gyr E460S Eskom meter - backfeed


Noobie
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I was wondering if anyone had any experience with Solis inverters and Landis & Gyr E460S Eskom meters?

I am investigating installing a 1,5kw single phase Solis grid-tie inverter and was wondering how I could prevent feeding back into the grid and tripping out the Eskom E460S meter.

I am concerned that if the inverter is supplying 1,5kw's then suddenly the house load drops, it may push back into the grid tripping out my E460S Eskom meter.

I see that the Solis inverter can have an external CT connected to it to prevent exporting to the grid, but I am not sure if this CT would be accurate enough and if the Solis inverter could react quick enough.

Has anyone done something similar with any success?

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So far, i have purchased a HoyMiles MI-600 Microinverter and made up a circuit using a Ardiuno and a CT split-core to measure my municipal consumption. At this moment i still draw power from the municipality and am saving ~126W per hour.

Im looking into a device to divert excess PV power into the geyser so that i can increase the capacity of the system to accommodate my fridge and freezer for when the compressors kit in.

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I took the chance and installed a 1,5kw Solis grid tie inverted I have not tripped out the meter.

The last eskom bill I received showed that my consumption has decreased by a little more than 20% so I am confident that the meter is not seeing any feed-in and then charging me for it.

I also changed my 200 litre Heat Tech geysers element from the standard 4kw unit to a 2kw unit. I would like to have a 1kw element installed but Heat Tech's smallest element is 2kw.

Can any suggest a supplier or manufacturer that can take the old 4kw Heat Tech element with its flange and have it made into a 1kw element?

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1 hour ago, Noobie said:

Can any suggest a supplier or manufacturer that can take the old 4kw Heat Tech element with its flange and have it made into a 1kw element?

Geyserwise dc/ac element.I just did one last week.Cutting the rubber seal is the only pain,but worked on 2nd attempt.

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On 2019/01/04 at 2:34 AM, PhatWheZ said:

So far, i have purchased a HoyMiles MI-600 Microinverter and made up a circuit using a Ardiuno and a CT split-core to measure my municipal consumption. At this moment i still draw power from the municipality and am saving ~126W per hour.

Im looking into a device to divert excess PV power into the geyser so that i can increase the capacity of the system to accommodate my fridge and freezer for when the compressors kit in.

Hopefully they also sold you the grid monitoring relay that needs to be installed with the microinverter to make it legal in South Africa.

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