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