Saving energy and money at choice of power transformers, v. 16(63)

When power transformers work at regular conditions, besides they exert theirs principal function, they constantly spend electrical energy that is, always work with losses. Depending od performances, sometimes those losses can be drastically different, although the transformers can equal power and some voltages of transformation. Considering that the loss of energy has its own price, a dilemma whether it is better economic reason to purchase new expensive transformer with smaller losses or one cheaper with more losses during its work-comes out. This paper analysis such case. The presented access can usefully serve in practice, in making the right decision in replacing the old transformer with the new one, or choosing the new transformer. (Author)