IEEE 840 Motors
Toshiba IEEE 840 motors are medium-voltage, severe duty electric motors engineered specifically for demanding mill and chemical industry applications. Electric motors convert electrical energy into mechanical energy, producing rotational torque measured in horsepower (HP) and revolutions per minute (RPM). These motors are typically designed for 60 Hz operation with three-phase voltages of 230V, 460V, and 575V, making them suitable for a wide range of industrial equipment including pumps, compressors, fans, conveyors, and machine tools.
Toshiba EQP Global 840 motors feature a Totally Enclosed Fan Cooled (TEFC) design that protects internal components from harsh environmental conditions. The external shaft-mounted fan circulates air over the motor frame, while seals and gaskets prevent contaminants from entering the enclosure. Many design characteristics align closely with IEEE 841 requirements, which are widely recognized as the global benchmark for motors operating in extreme conditions.
For the most demanding applications, Toshiba EQP Global 841 motors are designed to meet full IEEE 841 severe duty standards. These motors are commonly used in chemical processing, mining, pulp and paper mills, oil and gas, and other heavy industrial environments. Features such as Class I Division 2 ratings, vacuum pressure impregnated (VPI) Class F insulation, and robust mechanical construction allow these motors to operate reliably in high humidity, corrosive, salty, or high-temperature environments. IEEE 841 motors are designed to withstand ambient temperatures from -13°F to 104°F and operate at elevations up to 3,281 feet to ensure consistent performance and long service life.
FAQs
Q: What is an IEEE 840 motor?
An IEEE 840 motor is a severe duty electric motor designed primarily for mill and chemical industry applications, offering enhanced protection, durability, and reliability in harsh environments.
Q: What is the difference between IEEE 840 and IEEE 841 motors?
IEEE 841 motors meet more stringent severe duty standards, including additional environmental, electrical, and mechanical requirements, while IEEE 840 motors share many similar features but are not required to meet all IEEE 841 specifications.
Q: What does TEFC mean on a motor?
TEFC stands for Totally Enclosed Fan Cooled. This design prevents external air from entering the motor while using an external fan to dissipate heat from the motor frame.
Q: What industries commonly use Toshiba IEEE 840 and 841 motors?
These motors are commonly used in chemical processing, pulp and paper mills, mining, oil and gas, material handling, and other heavy industrial environments.
Q: What voltage ratings are available for Toshiba IEEE 840 motors?
Toshiba IEEE 840 motors are commonly available in three-phase voltages including 230V, 460V, and 575V for 60 Hz operation.
Q: What motor control options are compatible with these motors?
IEEE 840 and 841 motors can be used with traditional motor starters, soft starters, or variable frequency drives (VFDs), depending on the application and control requirements.
Why Buy Toshiba IEEE 840 Motors from RSP Supply
RSP Supply offers access to Toshiba IEEE 840 and IEEE 841 motors designed for severe duty industrial applications. These motors are built to deliver reliable performance in challenging environments while meeting recognized industry standards. Customers rely on RSP Supply for dependable sourcing, technical knowledge, and industrial motor solutions that integrate seamlessly with modern motor control systems.