Hot oil filteration in transformers
Hot oil filteration in transformers
(OP)
In some utilities, as annual routine, they conduct hot oil circulation in transformers in service ( may be for 3-4 days). Taking oil from bottom of transformer tank, circulate through a filter machine(with a shrouded electrical heater to raise oil temperature to 70C + vacuum chamber to remove moisture in oil) Is this the universal practice? Is it really necessary? Is it effective in removing moisture from paper insulation? Will oil get deteriorated by this, as oil pass over the hot heater?






RE: Hot oil filteration in transformers
Muthu
www.edison.co.in
RE: Hot oil filteration in transformers
I've organised this task on a handful of occasions when we had problems with oil quality on specific transformers, but not as a routine maintenance requirement across the fleet. It certainly removes water from the oil, so it must reduce the water content in the paper to a degree because a new equilibrium point will be reached. I don't think for a moment that it fully dries the paper.
RE: Hot oil filteration in transformers
RE: Hot oil filteration in transformers
RE: Hot oil filteration in transformers
RE: Hot oil filteration in transformers