Jump to content

Sunsynk Noob - Wiring question


Recommended Posts

Hi

Bought myself a Sunsynk 5.5 and a Hubble AM 2  awaiting delivery and are busy doing my wiring diagrams. 

I will be moving all my plugs and lights of the main Db to a sub db with a changeover switch to provide the sub db with power from either utility or inverter. 

1. Do I provide power from before or after the RCD to the inverter? 

2. The "Earth Neutral Bridge Box".  What is the inputs and outputs? Is it equivalent to the "Earth Bind Relay" shown in the manual or does it basically serve as an auto changeover switch for the earth? Do I simply sink a copper rod to create the isolated earth for the inverter supply? 

Thanks 

Link to comment
Share on other sites

31 minutes ago, swazz99jhb said:

Hi

Bought myself a Sunsynk 5.5 and a Hubble AM 2  awaiting delivery and are busy doing my wiring diagrams. 

I will be moving all my plugs and lights of the main Db to a sub db with a changeover switch to provide the sub db with power from either utility or inverter. 

1. Do I provide power from before or after the RCD to the inverter? 

2. The "Earth Neutral Bridge Box".  What is the inputs and outputs? Is it equivalent to the "Earth Bind Relay" shown in the manual or does it basically serve as an auto changeover switch for the earth? Do I simply sink a copper rod to create the isolated earth for the inverter supply? 

Thanks 

1. Mine is wired to get power from Mains before RCD and from a "clean neutral".

2. Most guys just use a single NO/NC relay (240v coil). The coil will be connected to the live and neutral outputs of ATS240 pins on the inverter. Once you open the inverter you will clearly see these markings. The neutral (from the inverter output) or earth can be linked to the COM pole (common) and the remaining wire (neutral or earth - depends on which was connected to COM) can be connected on the NO pole. Nothing should be connected on the NC pole.

 

Edited by branderplank
clarification
Link to comment
Share on other sites

Hi

I've already received the Earth Neutral Bridge Box so wish to use it seeing what I paid for it. 

The relay is currently closed(N+E bridged) with E on common and N on NC. It's a DPDT relay. Relay Link

Will I still use the ATS 240 wires to apply the load on the coil, but move the N to the NO pin? Thus it will create the bridge once grid dissappears and a current is applied to the ATS? 

Thanks

20210210_123709.jpg

Link to comment
Share on other sites

  • 2 weeks later...

When the inverter is on island mode the neutral can float above earth potential. The relay connects the load out neutral to an earth spike to bring the neutral down to earth potential. You will need to knock in an earth spike and take the ground wire from the relay terminal E to the earth spike. The Neutral from the load out is connected to the N terminal. The ATS from the inverter must be connected to the coil of the relay. When the inverter switches to island mode the relay will energise and connect the Load out neutral to earth.

Link to comment
Share on other sites

  • 5 months later...

Step 1 -  Ensure "Islanding Mode" is selected on the Inverter

Step 2 - Remove the BLACK NEUTRAL wire which is currently screwed into the NC (Normally Closed) terminal

image.png.08ce1e998f97bd5adffd08201e1454fc.png

 

Step 2 - Connect the removed  BLACK NEUTRAL wire and connect it to the NO (Normally Open) terminal

image.png.91d232a03bf9f5d27cc5d3c80e883081.png

 

Step 3 - Connect from the Inverter ATS240V a cable to the relay pins 14 & 13

image.png.efa46472751a00341ecca7d08584d4f9.png

image.png.341e2e5dbd29ae59abf9210a44493335.png

image.png.af16e72f680ba138e6865844d1bb35c2.png

Step 4 - Connect N from the connector block to N on the Inverter LOAD and E to Earth on the Inverter

image.png.96dc2c30fa265b83bda107c435ec65e7.png

Hope that helps.

@Leshen Helped me figure it out a while ago so kudo's to him...

 

 

image.png

Edited by abeetude
removed one picture
Link to comment
Share on other sites

Thank you @abeetude!

Looking at the datasheet and diagram for the relay, am I correct in saying, if there is no voltage applied to A1-A2 coil, 1 and 9 plus 4 and 12 are closed. When voltage is applied to the coil,  1 and 9 plus 4 and 12 open, however 1 and 5 plus 4 and 8 get closed?

relay.thumb.PNG.44c7c0b0a2bc1c7fda6ce35100674727.PNG

Link to comment
Share on other sites

52 minutes ago, abeetude said:

All your earth wires should be connected somehow as well as to the inverter chassis. Maybe browse through the member installs or see diagram in manual.

 

Thanks. Another question - do you have ground spike connected to the earth on the load side and inserted into the ground outside?

Link to comment
Share on other sites

On 2021/02/12 at 10:21 PM, swazz99jhb said:

I assume this bind is only useful during loadshedding where the grid earth is still intack? 

What if the grid is gone due to cable theft? 

How is the inverter /system then grounded? 

That begs a question. Where is neutral officially grounded. On my premise , or  anywhere outside of my immediate proximity?

Link to comment
Share on other sites

@TonyH I have been looking at your diagram and using it as a guideline for sometime. Can you please tell me, where is the point circled in red physically connected? Why not run a cable from Load Out neutral to the neutral bar in the Solar DB and another cable from the relay to the same neutral bar, the same way as you've done with the Earth from the Load Out? Why the neutral need mid point split?

1736799899_InverterwiringsplitNeutralandEarthBarAsBuild.jpg.7259abcaafc74f9bb225bfd88555a156.thumb.jpg.96b0d13541646bd0ebd5c9b006d89d34.jpg

Edited by PowerUser
Link to comment
Share on other sites

  • 4 weeks later...
  • 1 month later...

Can anyone advise me, I have a Sunsynk 5KW and currently only have 6 x 330W panels on one MPPT. I am planning to add another 6 or more panels on the other MPPT do I have to stick to the same 330W/8.9A/37V panels that I currently have or could I add bigger wattage panels?

Link to comment
Share on other sites

17 hours ago, Gerrie said:

Can anyone advise me, I have a Sunsynk 5KW and currently only have 6 x 330W panels on one MPPT. I am planning to add another 6 or more panels on the other MPPT do I have to stick to the same 330W/8.9A/37V panels that I currently have or could I add bigger wattage panels?

On a different MPPT, you can use different panels.

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

 Share

×
×
  • Create New...