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3 x SUN2000 L1 5kW Invert...

3 x SUN2000 L1 5kW Inverters across 3-Phase Supply

Created: Jan 9, 2022 21:28:21Latest reply: Jan 12, 2022 03:49:26 490 11 1 0 0
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Hello!


This post enquires about an issue with 3 x SUN2000 L1 5kW Inverters across 3-Phase Supply. Please see below for a detailed description.


ISSUE DESCRIPTION


A customer would like to install 3 x 5kW inverters with 5kW of PV, with each inverter wired to a different phase. His preference is for this solution, as he doesn't want to have a single point of failure with one larger 3-Phase inverter.


A few questions:


  • Can these inverters be set up in a master/slave configuration, even across different phases?


  • Will the monitoring show 3 separate sites or can this all be combined into one?


  • Are there any downsides of this solution compared with a single 3-Phase inverter?


Thank you in advance for shedding some light over this issue with 3 x SUN2000 L1 5kW Inverters across 3-Phase Supply!

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Tang_li
Admin Created Jan 10, 2022 01:52:44

I don't think there's any problem with this solution, and it'll be advantageous in terms of zero power grid-tied control.

1. In master/slave configuration is only the communication networking mode, which can be set to master/slave,

2. Monitoring If you use an SDongle to cascade the communication of inverters, you can combine them into one site. Of course, you can also use 3 SDongles to divide into three sites.

3. From my point of view, there are no drawbacks. The three inverters can be connected to 15 kW, and more than 5 kW.


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simchamnan
simchamnan Created Jan 10, 2022 05:30:25 (0) (0)
 
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2#
Tang_li
Tang_li Admin Created Jan 10, 2022 01:52:44

I don't think there's any problem with this solution, and it'll be advantageous in terms of zero power grid-tied control.

1. In master/slave configuration is only the communication networking mode, which can be set to master/slave,

2. Monitoring If you use an SDongle to cascade the communication of inverters, you can combine them into one site. Of course, you can also use 3 SDongles to divide into three sites.

3. From my point of view, there are no drawbacks. The three inverters can be connected to 15 kW, and more than 5 kW.


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simchamnan
simchamnan Created Jan 10, 2022 05:30:25 (0) (0)
 
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3#
PanchakS
PanchakS Created Jan 10, 2022 05:30:59

Good
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4#
Ken.e
Ken.e Created Jan 10, 2022 19:46:07

Installed 3 units 5KTL-L1 on 3phases
Running fine no problem.
Setting, Commisioning done on master Inverter will propagate to slaves.
Use smartdongle and 3P powersensor if you need to have zero export.3 x SUN2000 L1 5kW Inverters across 3-Phase Supply-4591829-1
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Tang_li
Tang_li Created Jan 11, 2022 01:18:56 (0) (0)
Nice!  
Tang_li
Tang_li Created Jan 11, 2022 01:50:44 (0) (0)
Three single-phase meters can be considered.  
Ken.e
Ken.e Reply Tang_li  Created Jan 11, 2022 03:14:23 (0) (0)
Yes, you could but you have to pull extra RS485 cables from panels to inverter. and inverter com port will full of cables,

RS485 at master
Batt comm,
Inverter cascading (to Slave),
Luna enabler,
Powersensors,
DI contact  
Tang_li
Tang_li Reply Ken.e  Created Jan 11, 2022 03:18:17 (0) (0)
Yes, but it would be much better in terms of power three-phase balancing  
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5#
Ken.e
Ken.e Created Jan 11, 2022 03:17:48

Diagram
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Logan_WS
Logan_WS Created Jan 12, 2022 03:49:26

Thanks Tang and Ken that was very helpful. Nice looking installation too!
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gzzz
gzzz Created Jan 20, 2022 08:04:13 (0) (0)
 
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