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 

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 February 8, 20215 yr by branderplank
clarification

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

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? 

Edited February 12, 20215 yr by swazz99jhb
Spelling

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.

On 2021/02/10 at 8:42 PM, swazz99jhb said:

 

Reviving this old thread but couldn't find the answer anywhere. Can anyone explain where the ATS 240 from the SunSynk inverter needs to be connected to the above relay?

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

 

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

 

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

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

Hope that helps.

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

 

 

Edited August 7, 20215 yr by abeetude
removed one picture

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?

Does anyone know the answer to the above question?

@PowerUser

Looking at the diagram I think you are correct.  So for the Sunsynk, ATS connects to the coil (A1 and A2) and Neutral and Earth you have to wire either 1 and 5 OR 4 and 8.

Regards

 

@PowerUser let me try this way  Ensure that your Relay black wire (as mentioned in my 1st reply) is wired to position 5 on the relay NO for Normally Open

Edited August 12, 20214 yr by abeetude
added reply to

51 minutes ago, abeetude said:

@PowerUser let me try this way  Ensure that your Relay black wire (as mentioned in my 1st reply) is wired to position 5 on the relay NO for Normally Open

Thank you very much @abeetude! What exactly do you mean by the last sentence - "MAIN DB EARTH TO INVERTER 1 Wire"? 

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.

 

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?

Here is a diagram that has passed COC

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?

@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?

Edited August 13, 20214 yr by PowerUser

The diagram just shows the connection. It is totally ok in fact that is exactly what I did.

On 2021/08/12 at 7:36 PM, PowerUser said:

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

Yes I do have a ground spike inserted to earth on the outside.

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?

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.

1 hour ago, P1000 said:

On a different MPPT, you can use different panels.

Thanks for the reply it puts my hart at rest before I just go and get more panels.

Hi all, 

I have a Sunsynk 5Kv, and have installed a relay on the ATS as recommended by Sunsynk to do the Earth/Neutral bonding, but this causes the main E/L to trip when Eskom power drops, and when Inverter syncs when power returns, I suspect that the Earth/Neutral bond is still there for a split second when the Inverter reconnects to Grid after 60 seconds, as the ATS "Island Signal" only drops when the Inverter reconnects to Grid. 

So my plan now is to use a NC relay connected to Grid, so that when Eskom power drops, the relay bonds Earth/Neutral, and when Eskom power returns, the Earth/Neutral bond is removed, and after 60 seconds the Inverter connects to the Grid.

Meaning that for 60 seconds while the Inverter resyncs I will jave a Floating Neutral. 

Your thoughts/comments. 

PS: My Solar Installer just left me with a floating Neutral on Essential Loads. 

Thanks 

Edited February 27, 20224 yr by Colin B

@Colin B Your inverter need to be connected before the Earth Leakage

35 minutes ago, abeetude said:

@Colin B Your inverter need to be connected before the Earth Leakage

Thanks for the confirmation.

I'll need to install a 63Amp Breaker before my E/L 1st, and space is a problem in my DB.