銅どう損そんどうそんMeanings1nouncopper losselectricity / electronicsTechnical term in electrical engineering for power loss due to resistance in copper windings of transformers, motors, etc.変へん圧あつ器きの銅どう損そんは負ふ荷か電でん流りゅうの二に乗じょうに比ひ例れいする。Copper loss in a transformer is proportional to the square of the load current.