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Insulating Glove Classes

  • Insulating Glove Classes

    Posted by Shaun Colley on 15 August 2023 at 9:57 am

    Apologies if this has already been asked but I could only find discussion around Class 1.

    We are just having a discussion around what others use for 22kV and 66kV, I note gloves only seem to go to as far as Class 4 40kV.

    We currently issue 0, 1, 2, & 4 but now with 22kV in some areas we are being asked if Class 3 might be more appropriate. I would say just use Class 4, save money and it’s for switching not doing up nuts and bolts…

    That also then raised the question of Class 4 for 66kV not being high enough for the rated phase-phase voltage.

    Interested to know others approach.

    Thanks in advance 🙂

    Stephen Albrecht replied 1 year, 5 months ago 2 Members · 1 Reply
  • 1 Reply
  • Stephen Albrecht

    Member
    15 August 2023 at 11:29 am

    Hi Shaun,

    MainPower has the following requirements for HV operating and earthing:

    11,000 V, Class 1

    22,000 V, Class 2

    33,000 V, Class 3

    66,000 V, Class 4

    The risk to workers is exposure to phase-to-earth voltage, not phase-to-phase voltage.

    Regarding the rating of Class 4 insulating gloves, Salisbury brand state a maximum use voltage (when worn with leather protectors) of 36 kV a.c. This is under to phase voltage value (38.1 kV) for a line voltage of 66 kV.

    However, as far as I am aware, there doesn’t appear to be an alternative option.

    Regards

    Stephen

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