Thermal Overload Relays to protect the motor
There are two major types of overload relays: thermal and magnetic. Thermal overloads operate by connecting a heater in series with the motor. The amount of heat produced depends on…
The differences between fuses and overloads
Overloads should not be confused with fuses or circuit breakers. Fuses and circuit breakers are designed to protect the circuit from a direct ground or short-circuit condition. Overloads are designed…
The operation of manual motor starters
Manual motor stater Manual starters are characterized by the fact that the operator must go to the location of the starter to initiate any change of action. There are several…
Sensing Devices (Motor control)
Motor control circuits depend on sensing devices to determine what conditions are occurring. They actvery much like the senses of the body. The brain is the control center of the…
Functions of Motor Control
Motor control systems perform some basic functions. The ones listed are by no means the only ones, but are very common. These basic functions will be discussed in greater detail…
Installation of Motors and Control Equipment
When installing electric motors and equipment, several factors should be considered. When a machine is installed, the motor, machine, and controls are all interrelated and must be considered as a…