Standardization of Electric Motors
Electric motors are commonly used in industrial world is asynchronous electric motor, with the two global standards IEC and NEMA. Asynchronous motor based IEC metric (millimeters), while the NEMA electric motors based Imperial (inch), in applications there is the unit of power in horsepower (hp) or kilowatt (kW). Electric motors in IEC standards are divided into several classes according to its efficiency. As a standard in the European Union, the division of this class become EFF1, EFF2 and EFF3. For EFF1 class is the most efficient electric motors, at least waste of energy, while EFF3 already may not be used within the EU, because wasting fuel in power stations and will automatically generate the largest carbon sink, thus further polluting the environment. Applicable IEC standard is IEC 34-1, this is a standard governing the rotating electric-powered equipment. There are plenty of electric motor manufacturers, but only in part truly follow the directives and IEC 34-1 efficiency levels...