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Thread: Hot work on UPS equipment

  1. #11
    Join Date
    Jun 2010
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    1,740
    check with the UPS manufacturer. You can't turn off the battery.

  2. #12
    Join Date
    Feb 2003
    Location
    New York, 40.7514,-73.9925
    Posts
    4,164
    Quote Originally Posted by bravo69 View Post
    Ron, has OSHA code changed in the last few years? It was brought to my attention that hot work was allowed and now revisions say its not permitted. The UPS equipment supports life safety, PLC & Network cabinets. The life safety fire alarm system would be increased hazards and therefore hot work is permitted, correct?
    You can rationalize it any way you like to make it work in the way you want it to work.

    Although UPS batteries stay energized, hard to imagine that if it was turned off in the right conditions and timeframe, that it would be more hazardous to turn off than if you worked on it hot.

    There are often other ways around working it hot, depending on what system or connections you are working on. Generally bypass' or temp connections get rid of the need to what was considered in the past was a reason to work hot.
    Ron

  3. #13
    Join Date
    Jun 2010
    Posts
    1,740
    Are you talking about just battery replacement or beyond that?

  4. #14
    Join Date
    Feb 2004
    Location
    Austin, TX
    Posts
    110
    Since when can you turn off a battery/s? UPS = Uninterruptible Power Supply.
    Ken
    Electrical Project Coordinator


    "Communication, its a wonderful thing, when it happens."

  5. #15
    Join Date
    Jul 2006
    Posts
    2,246
    Quote Originally Posted by ken44 View Post
    Since when can you turn off a battery/s?
    Since you can pull the battery disconnect? Most UPSs have them, well, pretty much every one I've ever touched does- might be a connector behind a panel, might be pulling the packaged battery trays out, might be a huge DC switch on the wall behind the UPS, etc.

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