Energy efficiency of the motor and "Slavyanka"

Energy efficiency of an electric motor is its ability to optimally use energy reducing the consumption with the same load power.
In the past every world country complied with its own standards of energy efficiency. In order to make uniform requirements the International Energy Agency and International Organization for Standartization (ISO) have adopted IEC 60034-30 standart that unifies the requirements to motor energy efficiency and divides them into the following classes:

IE1 – standart efficiency;
IE2 – high efficiency;
IE3 – premium efficiency;
IE4 – super premium efficiency.

In 2017 the information appeared in the Internet that European Union was actively working on creating and implementing a new energy efficiency class - IE5 that has all chances in the foreseeable future to replace the IE4 category. Developing this class is connected with tightening the European and international requirements to energy efficiency caused by the following factors:

1. Dicrease of the general level of energy production and increase of the share of renewable energy sources in the world energy balance.
2. Forecast of the rise in the price of fossil fuels and increase of the costs in the energy industry.
3. Fall in the world level of energy safety.

Reduction of energy consumption without the fall in the production output is the optimal solution of the current situation. Due to that reason the control over energy efficiency of the used electric equipment the main part of which is electric motors holds a central position.

In January 2015 in the EU the restriction came into force for the operation of motors with the power of 7.5 to 375 kW: the indicated units can't be of a class lower than IE3 and IE2 motors are acceptable only with frequency adjusting devices. From January 2017, 100 % of motors with the power of 0.75 to 375 kW should be of a class not lower than IE3 (restrictions for IE2 remain in effect).

Russia has developed its own standard – GOST IEC 60034-1-2014 "Electric rotating machines". In practice, currently in EU countries class IE3 electric motors are prevalent and producers are actively launching IE4 motors on the market.

The world demand in increasing motor energy efficiency strengthens the position of the unique developments of the engineer Dmitriy Duyunov for the international energy community. The motors patented by Duyunov produced using the combined winding technology "Slavyanka" comply with the strict European standards for energy efficiency. And modernizing standard induction motors using Duyunov's technology allows to increase their energy efficiency class up to IE4 and IE3, which is proved by multiple tests of various induction motors held in the "SovElMash" laboratory.

Duyunov's motors are ultra modern domestic solution capable of providing production environment with energy efficient and reliable motors.

The source of the information in Russian - http://www.energosovet.ru/news.php?zag=1490175415
The link to GOST IEC 60034-1-2014 «Electric rotating machines» - http://docs.cntd.ru/document/1200120650