3 phase solar system

[Tongs of Destiny]

So I have 3 phase power for my house, the 2 phases are used only on 2x big central cooling systems for the house (but never really used as they're old) and the other remaining phase is used on the houses normal load.

I really want solar for the house, but no batteries as I can't sell my wife for extra cash. I'm quite happy to run solar for the day hours and get that Eskom power to almost zero, then at night use 100% Eskom. So I guess a hybrid inverter is what I need.

Do you think a 3 phase inverter is needed, or can/should I get a single phase inverter and wire that onto the phase for the house, as that is where 100% of the load is. (not sure if that can be done)

I would like a 10kw inverter, as that would cover all my needs during the day as I use around 75kwh per day.

If you know of any inverters to stay away from then please let me know, and also which ones are great. I would like the inverter to use the panels all the time and substitute from Eskom when needed, not just switch off and go 100% Eskom.

Thoughts?

 

[HowTo]

Hello
Sit with the same similar setup.
Flat uses one phase while house does use the two other phases.

Flat I mounted Solar setup and using this currently. Next project to install next Solar setup.
DB will need attention correct split-up. What will the one phase supply and other phase.
I already know what needs to be done.
Solar phase need to get plugs, lights, gate motor and outbuilding. Outbuilding or garage uses Electric fence and garage door motor.
The remaining phase Geyser and Stove. Geyser is switched of don't use it, gas geyser. Stove is also not utilized.
All cooking is done in flat.

 

[thehuman]

So I have 3 phase power for my house, the 2 phases are used only on 2x big central cooling systems for the house (but never really used as they're old) and the other remaining phase is used on the houses normal load.

I really want solar for the house, but no batteries as I can't sell my wife for extra cash. I'm quite happy to run solar for the day hours and get that Eskom power to almost zero, then at night use 100% Eskom. So I guess a hybrid inverter is what I need.

Do you think a 3 phase inverter is needed, or can/should I get a single phase inverter and wire that onto the phase for the house, as that is where 100% of the load is. (not sure if that can be done)

I would like a 10kw inverter, as that would cover all my needs during the day as I use around 75kwh per day.

If you know of any inverters to stay away from then please let me know, and also which ones are great. I would like the inverter to use the panels all the time and substitute from Eskom when needed, not just switch off and go 100% Eskom.

Thoughts?

Single phase inverter used for house only , sunsync running without battery could work , suggest get batteries later tho

 

[WalkWithMe]

So I have 3 phase power for my house, the 2 phases are used only on 2x big central cooling systems for the house (but never really used as they're old) and the other remaining phase is used on the houses normal load.

I really want solar for the house, but no batteries as I can't sell my wife for extra cash. I'm quite happy to run solar for the day hours and get that Eskom power to almost zero, then at night use 100% Eskom. So I guess a hybrid inverter is what I need.

Do you think a 3 phase inverter is needed, or can/should I get a single phase inverter and wire that onto the phase for the house, as that is where 100% of the load is. (not sure if that can be done)

I would like a 10kw inverter, as that would cover all my needs during the day as I use around 75kwh per day.

If you know of any inverters to stay away from then please let me know, and also which ones are great. I would like the inverter to use the panels all the time and substitute from Eskom when needed, not just switch off and go 100% Eskom.

Thoughts?

Do you not get nailed on your bill for a phase imbalance on the usage?
Unless you have a need for 3 Phase - you are going to over complicate things and push you prices up.

 

[Harmonic]

I really want solar for the house, but no batteries as I can't sell my wife for extra cash.

Send pics, we will confirm

 

[Tongs of Destiny]

Do you not get nailed on your bill for a phase imbalance on the usage?
Unless you have a need for 3 Phase - you are going to over complicate things and push you prices up.

not that I know of, as far as I can work out I have multiple meters running into 1 meter.. so if meter 1=R10, 2=R30, 3=R500 then I get one single bill (on one meter number) of R540 for the month. My monthly bill only has one meter number written on it.

I see (stand to be corrected) that a hybrid inverter needs Eskom power to actually run, so during loadshedding I won't be able to use any electricity... even though I am making power from panels etc

 

[Speedster]

not that I know of, as far as I can work out I have multiple meters running into 1 meter.. so if meter 1=R10, 2=R30, 3=R500 then I get one single bill (on one meter number) of R540 for the month. My monthly bill only has one meter number written on it.

I see (stand to be corrected) that a hybrid inverter needs Eskom power to actually run, so during loadshedding I won't be able to use any electricity... even though I am making power from panels etc

That's a grid tied inverter. Hybrid inverters can run off PV/battery during loadshedding.

 

[chrisc]

I disconnect the lights and 7 plugs from 2 phases and re-routed these to the inverter

I also fitted a 4-pole main switch which disables the inverter supply as well as the municipal supply

The electricity consumption dropped by 40% after the system was fitted

 

[Tongs of Destiny]

It's probably simpler and better for my connection to get a Hybrid 3 phase inverter then..

I found this inverter, but I don't know if it is a Hybrid one? how does one know if it's a Hybrid..

Your online renewable energy product partner

GW Store Renewables - Distributor and installer of solar panels, solar kits, solar power systems, load shed kits, batteries and inverters - Since 2007

gwstore.co.za

 

[Mike Hoxbig]

It's probably simpler and better for my connection to get a Hybrid 3 phase inverter then..

I found this inverter, but I don't know if it is a Hybrid one? how does one know if it's a Hybrid..

Your online renewable energy product partner

GW Store Renewables - Distributor and installer of solar panels, solar kits, solar power systems, load shed kits, batteries and inverters - Since 2007

gwstore.co.za

Keep in mind that's grid-tied and not hybrid...

 

[Tongs of Destiny]

Keep in mind that's grid-tied and not hybrid...

ohhh damnit, ok scrap that one then...

will an advert definitely say "hybrid" so one knows that it is?

 

[Mike Hoxbig]

ohhh damnit, ok scrap that one then...

will an advert definitely say "hybrid" so one knows that it is?

Yep...

Sunsynk 12kW Three Phase LV Hybrid Inverter

The Sunsynk three phase hybrid Inverter is the ideal inverter for managing power flow from multiple sources such as solar, main electrical grid and generator for residential or commercial purposes. Product Features Maximum charging /discharging current of 240A. Support storing energy from...

powerforum-store.co.za

Deye 12kW Hybrid – 3 Phase Inverter - Solar Advice

Features Three Phase - High Voltage Colourful Touch LCD Screen Max Charging/Discharging Current of 240A Parallel up to 16 Units Compact & Stylish Safe and Easy Installation 5-year warranty Set system parameters remotely with FREE SOLARMAN PRO App

solaradvice.co.za

 

[Tongs of Destiny]

Yep...

Sunsynk 12kW Three Phase LV Hybrid Inverter

The Sunsynk three phase hybrid Inverter is the ideal inverter for managing power flow from multiple sources such as solar, main electrical grid and generator for residential or commercial purposes. Product Features Maximum charging /discharging current of 240A. Support storing energy from...

powerforum-store.co.za

Deye 12kW Hybrid – 3 Phase Inverter - Solar Advice

Features Three Phase - High Voltage Colourful Touch LCD Screen Max Charging/Discharging Current of 240A Parallel up to 16 Units Compact & Stylish Safe and Easy Installation 5-year warranty Set system parameters remotely with FREE SOLARMAN PRO App

solaradvice.co.za

OMG those prices... maybe I should get a quote to remove the 3 phase and put it back to single phase, might be cheaper in the long run ughhh

 

[Neuk_]

My inlaws 3 Phase 12kw SunSynk was delivered this last week so they are waiting for the rest of the equipment excl. PV panels and then will have it all installed. I can't wait to see how it all works, partly because it is three phase and partly because I am looking at an 8kw SunSynk for our next house.

 

[Tongs of Destiny]

My inlaws 3 Phase 12kw SunSynk was delivered this last week so they are waiting for the rest of the equipment excl. PV panels and then will have it all installed. I can't wait to see how it all works, partly because it is three phase and partly because I am looking at an 8kw SunSynk for our next house.

Ok I see all these inverters (even hybrid) need a power in from Eskom or batteries during load shedding, not a train smash I suppose. Can't afford batteries now..

Going to measure each phase now to see what the draw is on the various phases, then maybe if :

Phase 1 = 3000kwh
Phase 2 = 1000kwh
Phase 3 = 100kwh

Then I could just put a single phase 5kw Hybrid inverter on Phase 1 and cut that load down by a lot. And later on I could put another single phase inverter on Phase 2 etc.

 

[thehuman]

Ok I see all these inverters (even hybrid) need a power in from Eskom or batteries during load shedding, not a train smash I suppose. Can't afford batteries now..

Going to measure each phase now to see what the draw is on the various phases, then maybe if :

Phase 1 = 3000kwh
Phase 2 = 1000kwh
Phase 3 = 100kwh

Then I could just put a single phase 5kw Hybrid inverter on Phase 1 and cut that load down by a lot. And later on I could put another single phase inverter on Phase 2 etc.

Try follow phases , and see what they power, maybe you could get away with 5 or 8kw sunsync on single phase without a battery.
Remember without a battery you will loose power when loadsheding
Can buy batteries later tho.

Your power meter , spinning disk type ?

 

[Lupus]

not that I know of, as far as I can work out I have multiple meters running into 1 meter.. so if meter 1=R10, 2=R30, 3=R500 then I get one single bill (on one meter number) of R540 for the month. My monthly bill only has one meter number written on it.

I see (stand to be corrected) that a hybrid inverter needs Eskom power to actually run, so during loadshedding I won't be able to use any electricity... even though I am making power from panels etc

No a grid tied inverter needs eskom.

 

[Neuk_]

Ok I see all these inverters (even hybrid) need a power in from Eskom or batteries during load shedding, not a train smash I suppose. Can't afford batteries now..

Going to measure each phase now to see what the draw is on the various phases, then maybe if :

Phase 1 = 3000kwh
Phase 2 = 1000kwh
Phase 3 = 100kwh

Then I could just put a single phase 5kw Hybrid inverter on Phase 1 and cut that load down by a lot. And later on I could put another single phase inverter on Phase 2 etc.

Not all hybrid's need batteries but I have heard that SunSynk does which is a pity but you can have a single LFP initially and then expand later on. My FIL went for a 3 phase as their house has an evaporative cooler, aircons in every bedroom, underfloor heating, two large geysers, two fridge/freezers, fridge, deep freeze, KwikHot under counter geyser and all the normal appliances and lighting.

 

[Neuk_]

No a grid tied inverter needs eskom.

Yeah, like most of the Solis', my wife's family has a 3 phase 25kVa grid tied Solis inverter for their factory wit ha generator as backup for load shedding and a recently installed 5kW SunSynk inverter with Revov battery for their offices.

 

[Lupus]

Yeah, like most of the Solis', my wife's family has a 3 phase 25kVa grid tied Solis inverter for their factory wit ha generator as backup for load shedding and a recently installed 5kW SunSynk inverter with Revov battery for their offices.

Problem is for commercial properties they had to do that, cause of limitations I think.