- Settore: Electrical equipment
- Number of terms: 62
- Number of blossaries: 0
- Company Profile:
The Motor & Motion Association is the manufacturing trade association for the electric motor and motion control industries. It promotes the electric motor industry through education, pre-competitive research and facilitation of technology transfer within the industry and in cooperation with ...
The minimum torque which is developed at rest for all angular positions of the rotor with rated voltage and frequency applied to the motor.
Industry:Electrical equipment
A measure of the resistance to angular motion. It is due to bearing friction and cog friction. Cog friction is the magnetic drag between the permanent magnet and rotor laminations in a PM motor. It may be taken as the average of four readings taken 90° apart with a torque watch.
Industry:Electrical equipment
The increase in temperature in ºC or ºF of the excited winding coil above ambient temperature at locked rotor or any designated load condition. Trise = T(total) - TAmb Hot)
Industry:Electrical equipment
The resistance of a motor as seen by the power supply. It is measured at the motor power leads or terminals.
Industry:Electrical equipment
A motor’s ability to dissipate heat. It provides a means of evaluating winding temperature as a function of outside surface temperature under steady state conditions, and is measured in ºC/watt.
Industry:Electrical equipment
The time required for a motor to reach 63.2% of its final temperature under known input and load conditions. It is measured in minutes. The value depends on mounting and motor speed.
Industry:Electrical equipment
A property which produced, or tends to produce, rotation. A force of one pound applied to the handle of a crank, the center of which is displaced one foot from the center of the shaft produces a torque of one pound-foot, provided the force is applied perpendicular to, and not along, the crank.
Industry:Electrical equipment
This refers to the cyclical variation of generating torque within one revolution. The torque variation superimposed on the D.C. torque component. The torque variation is a result of the permeance variation which occurs as the rotating member moves with respect to the stationary member.
Industry:Electrical equipment
The instantaneous change velocities in a motor-load system caused by the elasticity or compliance of the shaft. In certain driving modes, the frequencies of the various parts of the motor-load system or motor-tachometer load system are in opposite directions.
Industry:Electrical equipment
A measure of speed or rate of motion. It is measured in revolutions per minute (RPM) or radians per second.
Industry:Electrical equipment
