Periodic Intermittent Duty

Periodic Intermittent Duty: The class of duty making use of the ability of electric motors to operate with overload is called Periodic Intermittent Duty. The load on the motor is…

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Motor Rating Various Duty Cycles

Motor Rating Various Duty Cycles: From the point of view of calculation of motor rating various Motor Rating Various Duty Cycles can be broadly classified as: Continuous duty. Fluctuating loads.…

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Classes of Motor Duty in Electrical Drives

Classes of Motor Duty in Electrical Drives: IS: 4722-1968 categorises various load time variations encountered in practice into eight standard Classes of Motor Duty in Electrical Drives: Continuous duty. Short…

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Rating and Heating of Motors Articles

Rating and Heating of Motors Articles: Continuous Duty Motor : There are two types of Continuous Duty Motor — continuous duty at constant load and continuous duty with variable load cycle.…

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Electric Drives Articles

Electric Drives Articles: This Electric Drives Articles which includes the following topics: A Simple Electric Motor Characteristics of DC Motor Speed Torque Characteristic of Separately Excited DC Motor Speed Torque…

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Selection of Electric Drive

Selection of Electric Drive: For selection of electric drive motor it is essential that the conditions of service are well known. It is not sufficient to simply specify the output…

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Motor Power Rating Articles

Motor Power Rating Articles: Classes of Motor Duty in Electrical Drives : IS: 4722-1968 categorises various load time variations encountered in practice into eight standard Classes of Motor Duty in…

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