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Cold Sequence 480 Metering

    Home forums/topic Cold Sequence 480 Metering

    Home › Forums › Self-Contained Metering › Cold Sequence 480 Metering

    Post topics and questions about self-contained metering.

    Tagged: 480, Cold Sequence

    • This topic has 1 reply, 2 voices, and was last updated 4 years ago by Todd LommenTodd Lommen.
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    • February 21, 2019 at 1:21 pm #8412
      Jason ChristoffJason Christoff
      Moderator

      Who here still allows self contained 480 metering? Does anyone who still allows it still allow hot sequence?

      Minnesota Power and several other utilities have instituted polices that there is very little or even no self contained metering at 480 volt anymore. Most of the time that goes for both 3 phase and also single phase 240/480 volt. Most are doing this in response to the arc flash concerns. With the new high accuracy CTs available in today’s market moving to CT rated on even smaller loads registration and revenue loss is not much of any concern.

      May 23, 2019 at 10:16 am #8494
      Todd LommenTodd Lommen
      Participant

      We still use the Line Side Disconnect Socket – So far no issues with having to shut anything down to change or fix a meter – See a lot of this on Irrigation – Not really so much in the Industrial or Commercial side because the service is big enough to have either a CT cabinet or Transition Cabinet. So far we have been happy with the change – and at no point should anyone install a 480V socket with lever bypass – IMO

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