IEEE 840 Motors
Electrical Motors are electromechanical devices that convert electrical energy to mechanical energy by producing a rotating force (torque) measured in revolutions per minute (RPM) and horsepower (HP). Medium size motors are designed and built to operate at 60 Hz with three phase voltage at 230 volts, 460 volts and 575 volts. These motors are used to drive compressors, pumps, fans, machine tools, conveyers and other processing and materials handling equipment in industrial sectors.
Toshiba EQP Global 840 Motors are designed specifically for the chemical and mill industries. The Totally Enclosed Fan Cooled (TEFC) enclosure uses an external, shaft-mounted fan at the rear of the motor to blow air over the body to cool it. Seals and gaskets prevent air from freely moving between the interior of the motor and the surrounding environment. Many of the key features of the EQP Global 840 motors are in line with IEEE-841 motors. IEEE-841 motors, sometimes referred to as NEMA Premium, are the globally accepted standard for motors being used under the most extreme conditions.
Toshiba EQP Global 841 Motors are designed for severe duty applications in the chemical, mining, mill, oil and gas industries. The Class I Division 2 and vacuum pressure impregnated (VPI) Class F insulation provides additional reliability to withstand harsh environments. According to the IEEE 841 standard, severe duty motors should be able to perform at ambient temperatures from -13 degrees F to 104 degrees F and altitude up to 3281 feet. They should have full voltage starting and tolerate humid, corrosive or salty environments.
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