INDOOR DISTRIBUTION CLASS PAD MOUNTED XFMR - INDOORS

[GISdude]

Hi all,
I've researched this a bit and this has come up 2X now. Do you ever run into a situation where the POCO has installed a 12kV step down transformer inside a utility room? I'm curious because I know it's been done, but am researching the types and kinds that are in the industry. Maintenance, operations, etc.

Be advised, this is not a dry type XFRM.

Thanks

 

[AtTheKeyboard]

Hi all,
I've researched this a bit and this has come up 2X now. Do you ever run into a situation where the POCO has installed a 12kV step down transformer inside a utility room? I'm curious because I know it's been done, but am researching the types and kinds that are in the industry. Maintenance, operations, etc.

Be advised, this is not a dry type XFRM.

Thanks

I have seen it at least twice - usually on their way out. (Usually with PCBs in them too.) I know there's various government buildings on campuses where they manage their MV supply where MV transformers are still installed in vaults, and I think most double-ended switchgear ...well indoor switchgear... meet this criteria. I saw one mall that had them on the 2nd floor - in multiple areas, with access from the roof with a crane. Usually the big concern that the utility will have is access. I think most skyscrapers meet this criteria too, but don't personally have that experience. Why do you ask? Is there something specific that you'd like the forum to weigh in on?

 

[packersparky]

Hi all,
I've researched this a bit and this has come up 2X now. Do you ever run into a situation where the POCO has installed a 12kV step down transformer inside a utility room? I'm curious because I know it's been done, but am researching the types and kinds that are in the industry. Maintenance, operations, etc.

Be advised, this is not a dry type XFRM.

Thanks

Not POCO transformers but look at 450.23(A), 450.24, 450.25, and 450.26