Here is a simple method for estimating the actual load on an electric motor without special equipment. But first, a word of caution: Some applications (e.g., a large forced draft fan) require more ...

Recent studies indicate the level of knowledge and implementation of motor system energy-efficiency measures is low. A plethora of information on motor system design, best practices, purchasing, and ...

A good digital multimeter (DMM) is key to diagnosing compressor problems in general. For instance, in a previous article (May 15 issue of The NEWS) we discussed using the DMM to read suction and ...

The Digital Load Monitor (DLM) is capable of accurately measuring electrical motor loads and warning of overload and underload conditions, says the manufacturer. The company says the DLM has the ...

Electric motors, both ac and dc types, come in many shapes and sizes. Some are standardized versions for general-purpose applications. Others are intended for specific tasks. In any case, motors ...

Rolling-element bearings in electric motors support and locate the rotor, maintain a small and consistent air gap between the rotor and stator, and transfer loads from the shaft to the motor frame.

Motor efficiency has become a major specification in today's energy-conscious world. Small universal electric motors typically have an efficiency of about 30%, while 2-kW three-phase machines can ...

Born from the high-powered world of electric jetboarding, ZeroJet is now channeling all its energy into building performance electric boat drives. Its very first outboard combines drop-and-drive ...