I cant find this with the old Google, but when we went to 11kV, we were advised that we needed a licensed/trained person to manage it, and anyone without such qualification could not enter the transformer compounds or RMU rooms. We subcontracted it to a third party and as such, we have no keys or access.
Turns out, our other sites which have 11kV transformers, one is using the substation as a maintenance stores, and while it is big, and the stores is across the room from the transformer, its still the same room, and you could walk over and start pulling on levers on the RMU, tap changers etc.
Another site has them caged in properly, but no appointed person.
I'm trying to avoid making a huge fuss, but would like to advise them accurately, and I cant start that off with ‘I think I remember’, and ‘we do it like this’
