9 Terms
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Motors
Industry: Electrical equipment
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Motors
Hertz (HZ)
Electrical equipment; Motors
One cycle per second (as in 60 Hz. which is 60 cycles per second).
Compound wound dc motors
Electrical equipment; Motors
Designed with both a series and shunt field winding, the compound motor is used where the primary load requirement is heavy starting torque, and adjustable speed is not required. (See Paralleling) ...
Horsepower
Electrical equipment; Motors
The measure of rate of work. One horsepower is equivalent to lifting 33,000 pounds to a height of one foot in one minute. The horsepower of a motor is expressed as a function of torque and rpm.
Constant torque
Electrical equipment; Motors
Refers to loads whose H.P. requirements change linearly with changing speeds. Horsepower varies with the speed, i.e.- 2/1 HP at 1800/900 RPM. (Seen on some 2-speed motors). Possible applications ...
Drip-proof motor
Electrical equipment; Motors
An open motor in which the ventilating openings are so constructed that drops of liquid or solid particles falling on it, at any angle not greater than 15 degrees from the vertical, cannot enter ...
Dual voltage
Electrical equipment; Motors
Some motors can operate on two different voltages, depending upon how it is built and connected. The voltages are either multiples of two or the 3 of one another.
Dual torque
Electrical equipment; Motors
Dual speed motor whose torque varies with speed (as the speed changes the horsepower remains constant).
