Jump to content

Bonded earth on Island mode for and inverter


vincentvanrensburg

Recommended Posts

Hi Folks, can anyone shed some light on getting the potential difference down between earth and neutral when installing an Inverter into a home that has no Council or Muncipal mains supply? The issue is here that the Earth is in a floating scenario even if an Earth spike is fitted to the house Distribution board (+-50 Volt between E+N and 170 Volt between L+E). So Bonding the Earth and Neutral would in essence make the Earth Leakage switch redundant as there would be no current leakage between earth and neutral as they would be at the same level? The unit is an Axpert 3000KVA. Any thoughts and help appreciated. Regards Vincent

Link to comment
Share on other sites

Hello Yellow tape Measure. This is exactly how I understand the concept and need to know how and with what trigger method is best to trigger the relay and to have the RCD to function correctly. Keeping in Mind that there is no Municipal feed and only Solar and if need be, a Generator to charge the batteries in cloudy weather.

Link to comment
Share on other sites

There are a couple of ways to trigger the Relay. Some Sunsynk Models have the ATS240 which is essentially a signal Islanding mode ✓ that needs to be checked to function. What it does is send a 240V signal to a suitable relay to tie the Neutral & Earth together. However, in my opinion since you do not have Grid power that bond can be permanent. 

So if a grid was present you can use a Contactor to carry out the function a NO contactor. Or in the case of the inverter does not have the AtS240 then a 240V relay that has both functions NO & NC will do the trick. 

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.

×
×
  • Create New...