Electrical Basics - Inst Tools

What are Inverse Time and Instantaneous Trip Circuit Breakers?

Learn the inverse time and instantaneous trip circuit breakers principle, operation, advantages, and disadvantages.

Electrical enclosure is used to protect devices from hazardous environments. Download electrical enclosure book from automation direct.

Both soft starter and VFD can start and stop the motor but the main difference is VFD can do the speed control of motor also.

A megger is used to measure insulation resistance and it is powered by a DC generator or battery of a higher voltage range.

A star connection is a 4 wire system, whereas a Delta connection is a 3 wire system. Learn how to connect 3 phase motor.

When motor running through VFD the V/f ratio is kept constant in order to minimize the eddy current and hysteresis losses.

The enclosure is a part of the motor used for the protection from environment. In this article, we discuss seven types of enclosures.

A Smart MCC uses intelligent devices with dedicated controller with profibus communication to monitor & control the motors.

High inertial motor loads can be started by programming the V/f pattern in VFD. This feature is known as Torque Boosting.

Polarization Index (PI) and DA Tests are used to check the insulation resistance value of insulating materials used for electrical system.