Locked Rotor Torque: The minimum torque that a motor will develop at rest for all angular positions of the rotor (with rated voltage applied at rated frequency).

 

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Locked Rotor Torque: The minimum torque that a motor will develop at rest for all angular positions of the rotor (with rated voltage applied at rated frequency).

Pull-In Torque: The maximum constant torque which a synchronous motor will accelerate into synchronism at rated voltage and frequency.

Pull-Up Torque: The minimum torque developed by an AC motor during the period of acceleration from zero to the speed at which breakdown occurs. For motors which do not have a definite breakdown torque, the . . . View Full Definition

Locked Rotor Current: Steady state current taken from the line with the rotor at standstill (at rated voltage and frequency). This is the current seen when starting the motor and load.

Locked Market: A market is locked if the bid price equals the ask price. This can occur, for example, if the market is brokered and one side pays brokerage only, in over-the-counter trading the initiator o . . . View Full Definition

Rotor: The rotating member of an induction motor made up of stacked laminations. A shaft running through the center and a squirrel cage made in most cases of aluminum which holds the laminations to . . . View Full Definition

Rotor Cloud: An altocumulus cloud formation that can be found in the lee of a mountain or similar barrier. The air rotates around a horizontal axis, creating turbulence. Altocumulus lenticularis is an example.

Variable Torque: A multi-speed motor used on loads whose torque requirements vary with speed as in some centrifugal pumps and blowers. The HP varies as the square of the speed.

Wound Rotor Induction Motor: A wound rotor induction motor is an induction motor in which the secondary circuit consists of polyphase winding or coils whose terminals are either short circuited or closed through suitabl . . . View Full Definition

Torque: The twisting force at the motor shaft that drives the rollers on a treadmill and pulls the belt. The amount of torque is one of the variables used to calculate the amount of horsepower required.