Please help: THREE Phase installation with 3 inverter setup, - 3 phase with NO NEUTRAL

Please help: THREE Phase installation with 3 inverter setup, - utility/grid only has 3 wire of which all 3 wires are LIVE wires.... there is no NEUTRAL.
How do I wire a 3 Phase inverter or 3 parallel inverter using only the L1 L2 L3 WITHOUT A NEUTRAL. WE DO NOT HAVE A NEUTRAL.
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How do I wire a 3 Phase inverter or 3 parallel inverter using only the L1 L2 L3 WITHOUT A NEUTRAL. WE DO NOT HAVE A NEUTRAL.

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What is the voltage reading? (L1-L2; L1-L3, L2-L3)? And L1 to ground, L2 to ground, and L3 to ground.
-Bill
http://members.sti.net/offgridsolar/
E-mail [email protected]
L2 - L3 = 220
L1 - L3 = 220
I do have similar problem with this thread:
http://forum.solar-electric.com/discussion/11860/neutral-ground-inverter-wiring/
If you have ~230 vac rated inverters, then connecting A to L1/L2, B to L2/L3, and inverter C to L3/L1... All else being done chiefly correctly (breakers/fuses, possibly phase drop protection, less than 10kw imbalance between phases, you have a full Wye or Delta transformer set, utility approval, etc.).
Some inverters use a neutral to detect a broken neutral connection, but outside of north America, that usually does not apply/is not implemented (I.e., our split phase 120/240 vac system.
-Bill
http://www.goodwe.com.cn/product/show-615.aspx
You would connect like your diagram, except like I said, inverter A 230 vac output to L1&L2, etc.
Each inverter only sees a single phase (and follows that phase). They do not care about the other inverters on other passes.
-Bill
http://www.goodwe.com.cn/product/show-615.aspx
http://www.goodwe.com.cn/download/0.aspx
And a user manual here:
http://www.goodwe.com.cn/tools/download.ashx?id=273
I believe you will need to contact the mfg with your installation needs. The standard user interface does not appear to allow an end user to program the specific details for your country's power requirements.
It looks like if you want a smaller 3 phase installation, you would get 3x single phase GT inverters (less than 15 kWatt total solar array power). If you want 15 kWatt or larger, you can get three phase system GT inverter (one "box").
I do not see anything that would "require" a ground bonded neutral (for example, in the US, both L1 and L2 are "hot"... L1-L2 are 240 VAC, and L1-ground (and neutral) is 120 VAC, and L2-ground (neutral) is 120 VAC)... In the US, Neutral is the center tap of a transformer that is bonded to earth/safety ground in the main panel.
By the way, did you measure L1-ground; L2-ground; and L3-Ground? It can tell us a bit more about your three phase installation (Wye or Delta, and if any leads are ground referenced).
In any case--It appears that the inverters are programmed at the factory for country specific requirements (frequency, actual high/low voltage range, etc.). You might get a programmer (or programming software and password) from the Mfg...
-Bill
The second diagram looks like an explosion. ...wouldn't try that either.
In all likelihood you have a Delta feed, and if what you need is a solar system with such a feed there are 3 phase inverters available, but again, more details. Be safe
Electrician here with 40 years experience
Second system 1890W 3 × 300W No name brand poly, 3×330 Sunsolar Poly panels, Morningstar TS 60 PWM controller, no name 2000W inverter 400Ah FLA 24V nominal used for water pumping and day time air conditioning.
5Kw Yanmar clone single cylinder air cooled diesel generator for rare emergency charging and welding.
Second system 1890W 3 × 300W No name brand poly, 3×330 Sunsolar Poly panels, Morningstar TS 60 PWM controller, no name 2000W inverter 400Ah FLA 24V nominal used for water pumping and day time air conditioning.
5Kw Yanmar clone single cylinder air cooled diesel generator for rare emergency charging and welding.
Second system 1890W 3 × 300W No name brand poly, 3×330 Sunsolar Poly panels, Morningstar TS 60 PWM controller, no name 2000W inverter 400Ah FLA 24V nominal used for water pumping and day time air conditioning.
5Kw Yanmar clone single cylinder air cooled diesel generator for rare emergency charging and welding.
It has been many decades since I did three phase Wye math--But if the low line is 208 then the high should be (208*sqrt(2)=) 360 VAC, not 400 VAC.
Chan, you said there is no neutral?
-Bill
https://earth.nullschool.net/#current/wind/surface/level/equirectangular
http://members.sti.net/offgridsolar/
E-mail [email protected]
His utility may require all inverters to turn off if there is the loss of one or two phases.
If off grid operation, three phase is a different animal.
-Bill
Second system 1890W 3 × 300W No name brand poly, 3×330 Sunsolar Poly panels, Morningstar TS 60 PWM controller, no name 2000W inverter 400Ah FLA 24V nominal used for water pumping and day time air conditioning.
5Kw Yanmar clone single cylinder air cooled diesel generator for rare emergency charging and welding.
A single phase inverter knows nothing about other phases and cannot sense then (if other Lx wire is not brought into said inverter). A GT Inverter simply follows the single phase sinewave voltage, and injects current proportional to the instantaneous voltage value (it can get more complex, but that is the basics).
-Bill
Second system 1890W 3 × 300W No name brand poly, 3×330 Sunsolar Poly panels, Morningstar TS 60 PWM controller, no name 2000W inverter 400Ah FLA 24V nominal used for water pumping and day time air conditioning.
5Kw Yanmar clone single cylinder air cooled diesel generator for rare emergency charging and welding.
-Bill
http://www.voltronicpower.com/oCart2/index.php?route=product/product&product_id=141
- BUT as for the GT, I am not worried as there is no need for a neutral. A GT setup is just .... l1+l2 / l2+l3 / l1+l3 will do... and any order or as many as you can attach to the GRID.
- The problem lies when you need an OFF-GRID/HYBRID SETUP WITH A NEUTRAL. ** but I dont think ill think about this as of now... as I have talked with my utility company and they are willing to give me a neutral line should I needed one. (PHILIPPINES) does not need NEUTRAL LINE... as both L1 - L2 are LIVE.
- any more / other input on this thread is very much appreciated
http://members.sti.net/offgridsolar/
E-mail [email protected]