Parts of a thermal overload relay

Overload Relay-Working Principle and Construction

Overload relays are an important component in protecting motors from electrical overloads. By monitoring the current flow to motors, these devices prevent damage that could affect motor performance and longevity. This article explores the principle, their types, applications, and the…

DOL Starter Control Diagram

DOL Starter: Working Principle, Diagram and Advantage

Different starting methods are used to start a 3-phase induction motor like a star delta starter, autotransformer starter, variable frequency drive, soft starter, and dol starter(direct online starter) because the Induction motor draws a large current at starting. in this article we will…

block diagram of the variable frequency drive

VFD-Working Principle and Block Diagram

VFD is a short form of a variable frequency drive also called Frequency converters, which has undergone extremely rapid changes, largely as a result of the development of microprocessor and semiconductor devices and their reduction in prices. However, the basic…

What is Soft Starter,Working Principle,diagram,advantages

What is Soft Starter? Soft Starters are starting devices, used for the acceleration, deceleration, and protection of the three phase electrical induction motors through the controlling applied voltage to 3 phase motor.Induction motor is the most frequently used motor for industrial…