Source for oil-filled, water-cooled transformer?
Source for oil-filled, water-cooled transformer?
(OP)
I thought I had sent this question in already, but it never appeared - so I hope this is not a duplication.
We are looking for a manufacturer who might be willing and able to provide two oil-filled, water-cooled transformers (that's what was specified):
"Approximate" ratings (to protect the guilty):
5 MVA
15 kV - 5 kV
On-load tap changer
All of the usual suspects were tried and after they stopped laughing, they said no.
Anyone have a lead on a manufacturer who might be willing to build a couple of these?
Thanks,
Dave
We are looking for a manufacturer who might be willing and able to provide two oil-filled, water-cooled transformers (that's what was specified):
"Approximate" ratings (to protect the guilty):
5 MVA
15 kV - 5 kV
On-load tap changer
All of the usual suspects were tried and after they stopped laughing, they said no.
Anyone have a lead on a manufacturer who might be willing to build a couple of these?
Thanks,
Dave






RE: Source for oil-filled, water-cooled transformer?
These used to be all lumped in the FOW cooling class but have been seperated in 2 classifications now, OFWF and ODWF classes. ANSI C57.12.00-2000
RE: Source for oil-filled, water-cooled transformer?
There are aftermarket coolers which can be retrofitted to existing units - is this an option for a remote installation?
I've got a couple sprinklers left over since we installed an in-ground sprinkling system..........it would not be the first time that's been done.
May I ask why water cooled is required?
RE: Source for oil-filled, water-cooled transformer?
Steven C
Senior Member
ThirdPartyInspections.com
RE: Source for oil-filled, water-cooled transformer?
Water-cooled transformer apparently was specified to match some older existing units at a hydro facility. These used to be fairly common - but not so much in the last 60 years or so.
RE: Source for oil-filled, water-cooled transformer?
RE: Source for oil-filled, water-cooled transformer?
An LTC was specified, so not sure how that would be done with a cast coil unit.
RE: Source for oil-filled, water-cooled transformer?
RE: Source for oil-filled, water-cooled transformer?
dpc, water cooled units are not so un common.In reality for certain applications this is the only solution eg Generator transformers in underground hydro power stations,arc furnace transfornmers in steel industry,Rectifier and auto regulating units in aluminium smelters.In later cases,dust and fumes makes normal oil to air coolers get choked up soon.
Instead of single tube oil to water shell tube heat exchangers,today more and more double tube coolers are used to avoid accidental oil spill in to river streams.
RE: Source for oil-filled, water-cooled transformer?
They may be in a position to provide one, but so far only one has offered to quote these units.
I haven't seen one outside of a hydro plant in 35 years.