Porównanie kosztów cyklu zużycia standardowych i energooszczędnych silników indukcyjnych niskiego napięcia przy pracy z różnym obciążeniem

The paper brings up the problems of low-voltage induction motor use. General use and large number of installations have the impact on significant electric energy consumption caused by these devices. A lot of working induction motors have been exploited for twenty years or more. They were repaired many times. This decreased their efficiency and makes large potential for electricity savings. Implementation of energy efficient motors may be the solution of the problem. Unfortunately, the barrier is the higher price of the energy saving motor than of the standard one. Investors are accustomed to the installation of low-efficient and cheap equipment or the repair of obsolete devices. Authors proposed the method of costs calculation in the whole life cycle of the devices (LCC analysis) as key method for making the decision about the purchase. The profitability of the energy efficient motor use and standard motor use was shown as the difference in the life cycle costs of those devices. Moreover, the cost of the standard motor repair and cost of the exchange of standard motor on energy efficient one were compared.