PURPOSE: To prevent deterioration of insulation property of electric insulation oil and breakdown of the insulation oil in a transformer, by a method wherein a white clay treating device is installed at midway of oil circulation system, and polar material contained within electric insulation oil in the transformer oil tank is removed.
CONSTITUTION: A white clay treating device to remove polar material contained in electric insulation oil 3, together with a pipe 11 to be connected to a transformer tank 2, a second oil circulation pump 12, an oil flow adjusting valve 13 to control the oil flow amount, a temperature control system 14 for controlling the polar material removing capacity of the white clay treating device 10 and a filtering device 15 for catching suspended particles in the oil so as to prevent the blinding constitutes a white clay treating oil circulation system 16. If polar material is produced on account of deterioration of the electric insulation oil 3 within the transformer tank 2, it is transferred to the white clay treating device by the second oil circulation pump 12 and the polar material is removed. And then oil is returned to the oil tank again through the pipe 11.
MIYAMOTO AKIO
KAWASHIMA TAKESHI
| JPS50161625A | 1975-12-27 | |||
| JPS56161624A | 1981-12-12 |