Motors differ from other types of loads in one important way: The motor needs much more current to start than to run. This temporary, but significant, inrush current is what complicates motor circuit ...

Group motor protection as described in NFPA 70, the U. S. National Electrical Code (NEC) Article 430.53 lets two or more motors be protected by the same overcurrent device as long as the installation ...

When an overload device sized in accordance with 430.32(A)(1) and (B)(1) is not sufficient to start the motor, higher size sensing elements shall be permitted if the trip current does not exceed ____% ...

In this exciting video, we dive into the world of controlling high voltage DC motors and the intricate process of designing a ...

A good indication that a motor may be overloaded is overheating, or in some cases not starting at all. For HVAC motors it can be as simple as belts that may be too tight, inadequate wiring, or voltage ...

Enhancing motor-drive apps with added safety, the ACPL-785J isolation amplifiers include both short-circuit and overload detection and allow direct measurement of motor phase currents in power ...

Circuit protection has proven useful, but meeting the increasingly sophisticated industrial and commercial requirements can be a challenge. An overload or short circuit in a fuse or mini circuit ...

In troubleshooting situations involving a motor, more than half the battle is simply isolating the problem. Whenever there’s a working motor, there’s a load and there’s some sort of motor controller, ...

The Allen-Bradley Branch motor control components have been revised by Rockwell Automation. According to the company, this move was made to update systems where components are used to turn on and off ...