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Reyrolle Switchgear

GM Elec Eng

I was wondering if anyone had any experience or examples of failing Reyrolle HH Switchgear?

We have a large number of this switchgear on our site, dating back to the early 1950's, and have recently been informed that this type of switchgear is prone to "catastrophic failure" and have been advised that no Live switching should be undertaken on this type of switchgear (even the On-Load rated Switches and not just the Off-Load isolators).

We have now placed a restriction on Live switching our Reyrolle HH Frames and I am looking for any examples of these failures and what the causes have been

Any case studies / reports / information anyone has would be greatly appreciated

Regards

Greg

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  • This may not relate - I am not sure which particular set of  switch gear you have, but about ten years ago, there was a scare with some of the older oil-fill Reyrolle gear, where some under specified bolts could fail inside under certain conditions leading to an explosive oil vapour and fire type accident.
    I'm not sure if perhaps similar things have perhaps now been reported  in other models.
    That particular warning notice is here
     Mike

  • in reply to mapj1

    Hi Mike thanks for the information, I remember reading up on a similar issue with the HV Reyrolle LM oil filled Switchgear also. The HH Switchgear we have is all Low Voltage and is air insulated so thankfully there is no risk of an oil vapour fire occurring.

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  • in reply to mapj1

    Hi Mike thanks for the information, I remember reading up on a similar issue with the HV Reyrolle LM oil filled Switchgear also. The HH Switchgear we have is all Low Voltage and is air insulated so thankfully there is no risk of an oil vapour fire occurring.

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