Looks like the installation is intended for crossarm mounting in medium-voltage overhead distribution, right?
They are not oil-insulated, so that's a plus. Reference:
www.cooperpower.com/Products/Distribution/ Switches/single.asp
Are the capacitors in an ungrounded-wye arrangement? That their racks are grounded or ungrounded does not generally affect operational safety. To ground or not is usually a matter of prior acceptable design and practice for the local area/specific utility. Of course, see that the vacuum switches are appropriately rated for this duty.
What type of fuse is specified? You may want to request the cutouts be loadbreak-rated specifically for capacitor protection/disconnecting. It’s quite a different game in capacitor {versus inductive-load} switching. To avoid fuse operation on hot-up, you might want to test each can on the ground immediately before sending them up the hand line. Quality control of capacitor production is quite good these days, but internal damage in transit is possible, and closing into a damaged can may be a bit “noisy.”
[This message has been edited by Bjarney (edited 12-03-2002).]
