MV switchgear spacing
MV switchgear spacing
(OP)
Hi,
I looking for a IEEE standard with recommended spacing between phase and ground in a switchgear (metal clad and metal enclosed), for MV voltage 125 kV bil.
I search but didn't find what i need. Do you have some idea?
Thanks
I looking for a IEEE standard with recommended spacing between phase and ground in a switchgear (metal clad and metal enclosed), for MV voltage 125 kV bil.
I search but didn't find what i need. Do you have some idea?
Thanks






RE: MV switchgear spacing
David Castor
www.cvoes.com
RE: MV switchgear spacing
Maybe i just didn't see it, but i tried to look very carefully.
RE: MV switchgear spacing
RE: MV switchgear spacing
NEC table 490.24 provides clearances for field-fabricated installations. 125kV requires 7.5 inches indoors and 10 inches outdoors.
Alan
"The engineer's first problem in any design situation is to discover what the problem really is." Unk.
RE: MV switchgear spacing
"If I had eight hours to chop down a tree, I'd spend six sharpening my axe." -- Abraham Lincoln
For the best use of Eng-Tips, please click here -> FAQ731-376: Eng-Tips.com Forum Policies
RE: MV switchgear spacing
For everyone's info, this is a great resource for many things Switchgear related. Powell used to publish a single Table of Contents that made it easy to scan titles, but apparently that has been "web optimized" which means it is harder to look for individual items now. Luckily, someone saved that old TOC here. I used that to Google the actual PTB#.
"If I had eight hours to chop down a tree, I'd spend six sharpening my axe." -- Abraham Lincoln
For the best use of Eng-Tips, please click here -> FAQ731-376: Eng-Tips.com Forum Policies
RE: MV switchgear spacing
Thanks for posting that link. After reading it, I realized I had read it before, years ago. The lack of specified minimum spacing does seem odd, but that's the way it is, I guess.
David Castor
www.cvoes.com
RE: MV switchgear spacing