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  2. Premium efficiency - Wikipedia

    en.wikipedia.org/wiki/Premium_efficiency

    Premium efficiency, when used in reference to specific types of Electric Motors (with a rotating shaft), is a class of motor efficiency.. As part of a concerted effort worldwide to reduce energy consumption, CO 2 emissions and the impact of industrial operations on the environment, various regulatory authorities in many countries have introduced, or are planning, legislation to encourage the ...

  3. IEC 60034 - Wikipedia

    en.wikipedia.org/wiki/IEC_60034

    It classifies five classes: IE1 (standard), IE2 (high) and IE3 (premium), IE4 (super premium efficiency), IE5 (ultra premium efficiency). For each class the efficiency is defined for a rated output range from 0.75 to 375 kW. In the European Community the IE2 class is mandatory for all new motors since 16 June 2011. The IE3 class will be ...

  4. IE3 - Wikipedia

    en.wikipedia.org/wiki/IE3

    IE3. 1 language. 日本語 ... an IEC 60034-30 energy-efficiency class for electric motors This page was last edited on 14 January 2025, at 12:26 (UTC). Text is ...

  5. Engine efficiency - Wikipedia

    en.wikipedia.org/wiki/Engine_efficiency

    Engine efficiency of thermal engines is the relationship between the total energy contained in the fuel, and the amount of energy used to perform useful work. There are two classifications of thermal engines- Internal combustion (gasoline, diesel and gas turbine-Brayton cycle engines) and

  6. Electrical efficiency - Wikipedia

    en.wikipedia.org/wiki/Electrical_efficiency

    A premium efficiency electric motor: more than 90% (see Main Article: Premium efficiency). A large power transformer used in the electrical grid may have efficiency of more than 99%. Early 19th century transformers were much less efficient, wasting up to a third of the energy passing through them.

  7. Mechanical efficiency - Wikipedia

    en.wikipedia.org/wiki/Mechanical_efficiency

    In mechanical engineering, mechanical efficiency is a dimensionless ratio that measures the efficiency of a mechanism or machine in transforming the power input to the device to power output. A machine is a mechanical linkage in which force is applied at one point, and the force does work moving a load at another point.

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  9. Minimum energy performance standard - Wikipedia

    en.wikipedia.org/wiki/Minimum_energy_performance...

    An electric induction motor is required to have a specified minimum full-load efficiency. A compact fluorescent lamp is required to start and run up to near full brightness in a given time, to have a minimum life of several thousand hours, to maintain its output within specified limits, to withstand a certain number of switchings, to have a ...