Vegetable oil based dielectric coolant

Details Vegetable oil based dielectric coolant Vegetable oil based dielectric coolant

1996-10-08

2000-03-14

Ramirez, Nestor

Electricity: conductors and insulators

With fluids or vacuum

Boxes and housings

361274L, 336 94, H01F 2708

Patent

active

06037537&

ABSTRACT:
A transformer is disclosed, including a tank housing a transformer core/coil assembly, a dielectric insulating fluid surrounding the core/coil assembly, the fluid comprising a vegetable oil, an antioxidant dissolved in the oil, and a low temperature additive blended into the oil, wherein the fluid defines a headspace above the fluid. The preferred embodiment includes an oxygen absorbing material contained in the tank and in contact with gases in the tank but isolated from contact with the dielectric fluid, the tank including an opening and a sealed plug in the opening, such that the oxygen absorbing material can be replaced through the opening upon removal of the sealed plug, and further includes a gas permeable polymer container sealed against the opening for supporting the oxygen absorbing material and an indicator in gas contact with the headspace and visible from outside the tank for indicating the presence of oxygen in the headspace.

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