- Domeniu: 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 ...
Circuit resistance created by the brushes and the brush film in a brush type motor (universal, PM, wound field) adding to other power losses in a motor.
Industry:Electrical equipment
A cyclical torque variation superimposed on the D.C. motor torque caused by permeance variations as the armature teeth or rotor magnets pass stator pole tips.
Industry:Electrical equipment
In D.C. motors the switching (either mechanically or electronically) of the direction of the current in a coil or group of coils to cause a change of magnetic polarity.
Industry:Electrical equipment
In a brush type D.C. motor, the angle in electrical degrees that a coil or group of coils on an armature rotate while being commutated. In a brushless D.C. motor, the angular difference in electrical degrees between the rotor and stator poles when the current is reversed in the windings.
Industry:Electrical equipment
A high voltage test of the motor’s insulation ability to withstand an A.C. voltage. The test criterion limits the leakage current to a specified maximum at the test voltage of specified magnitude and frequency, applied between the motor case and windings.
Industry:Electrical equipment
The relationship between the operating time and the off time of a motor. Both the on time and the repetition rate must be specified.
Industry:Electrical equipment
A control function that brakes the motor by dissipating its stored energy.
Industry:Electrical equipment
Electromagnetic interference (EMI), sometimes referred to as Radio Frequency Interference (RFI), is a phenomenon which, either directly or indirectly can contribute to degradation in performance of an electronic receiver or system. EMI consists of undesirable voltages and currents that reach the victim device either by conduction through the power lines or by radiation through the air and causes the device to exhibit undesirable performance. It is usually caused by switching or winding commutation.
Industry:Electrical equipment
The resistance of the wire in the field coil as seen at the field leads or terminals.
Industry:Electrical equipment
