Results 1 to 4 of 4

Thread: Isolation procedure for solar/inverter/batteries

  1. #1
    Platinum Member
    Join Date
    Mar 2022
    Location
    South Africa
    Posts
    1,905
    Thanks
    54
    Thanked 93 Times in 89 Posts

    Isolation procedure for solar/inverter/batteries

    It was just a matter of time for something to go wrong.

    This is the second time I have had a call from customers, frantically trying to switch off a system. The first time was an installation where batteries started boiling and no isolation procedure, in fact not switch disconnector.

    Again 2 day ago another fault on a system and no isolation procedure.

    What is the problem, the installer will spend 2 hours running through with the owner telling him about his system and where to switch off, the owner is out of town on business and suddenly there is problem, a loud high pitched sound coming from the unit, what now.

    I can tell you what now, panic and run.

    While the pro's design the regs for solar, they should include a clause which includes documentation with cables routes and isolation points required to safely isolate the system.

    IF the owner who may remember how the system works for the first 3 days or 3 weeks, is not home and there is a problem, or if the installer who might not be around in 6 months time cannot reached. If the fireman or another electrician is sent to the site, there must be a site document wit hall the relevant information about the system.

    I know the first response would be to run, however eventually someone will need to shut it down.

    Dont be that person who causes a family home to burn to the ground because you an idiot who is too irresponsible to create a simple diagram and leave it for other to fix your mess.

  2. #2
    Diamond Member Justloadit's Avatar
    Join Date
    Nov 2010
    Location
    Johannesburg
    Posts
    3,474
    Thanks
    134
    Thanked 694 Times in 592 Posts
    Blog Entries
    1
    Yep to save a couple of hundred Rand, on a R100K plus is ludicrous.

    In all my design work of any system, the first item on my list is "Safety",
    the second is - how will the customer make the system safe in the case of a catastrophic failure, with out requiring an engineering degree, and if this will be a problem, then an automated shut down of the system becomes part of the design. This could be a hidden 'Fuse' , non re-settable circuit breaker or a electrically controlled fail to make safe contacts.

    But again I have told been that my equipment is always expensive.

    My reply to that, is the day that you complain the price is cheap, then I know that I have made an error in my design/calculations
    Victor - Knowledge is a blessing or a curse, your current circumstances make you decide!
    Solar pumping, Solar Geyser & Solar Security lighting solutions - www.microsolve.co.za

  3. #3
    Platinum Member
    Join Date
    Mar 2022
    Location
    South Africa
    Posts
    1,905
    Thanks
    54
    Thanked 93 Times in 89 Posts
    Anyone have a PDF for the safe isolation of solar installations and a startup and shut down procedure?

    I have started putting one together, just need to verify the content.
    Comments are my opinion, unless regulations are attached to support the comment. This is social media, not a court room.

  4. #4
    Platinum Member
    Join Date
    Mar 2022
    Location
    South Africa
    Posts
    1,905
    Thanks
    54
    Thanked 93 Times in 89 Posts
    Any tips on what documentation you should leave at the inverter?

    Sketches:

    1/Equipment layout and isolator location.
    2/Electrical circuit diagram, non essential and essential.

    How to switch on/off the system:

    1/ Startup and shutdown procedure.
    2/ What to switch off in case of emergency.
    3/ What not to switch off under normal operation.
    Comments are my opinion, unless regulations are attached to support the comment. This is social media, not a court room.

Similar Threads

  1. Solar, inverter and batteries, why
    By Isetech in forum Energy and Resource Conservation Forum
    Replies: 6
    Last Post: 19-Jul-23, 08:43 AM
  2. [Question] Using Hybrid inverter without batteries.
    By CGelectrical in forum Electrical Contracting Industry Forum
    Replies: 10
    Last Post: 11-Mar-22, 08:15 AM
  3. Solar inverter installation investigations
    By ians in forum Electrical Contracting Industry Forum
    Replies: 5
    Last Post: 17-Feb-21, 12:19 PM
  4. generator inverter or solar
    By ians in forum Energy and Resource Conservation Forum
    Replies: 6
    Last Post: 19-Sep-20, 09:09 AM
  5. Solar inverter
    By Rifrug in forum Electrical Contracting Industry Forum
    Replies: 7
    Last Post: 20-Dec-19, 08:15 AM

Did you like this article? Share it with your favourite social network.

Did you like this article? Share it with your favourite social network.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •