The terms ‘Switchgear’ and ‘Motor Control Centres’ are used in general to describe combinations of enclosures, busbars, circuit breakers, power contactors, power fuses, protective relays, controls and indicating devices.Read more about switchgear here What is Switchgear? | Features, Components and ClassificationThe standards used in Europe often refer to IEC60050 for … [Read more...] about What are Motor Control Centres?
Three Phase Induction Motor
An induction motor may be considered to be a transformer with a rotating short circuited secondary. The stator winding corresponds to transformer primary and rotor winding to transformer secondary. However, the following differences between the two are worth noting: 1. Air Gap Unlike a transformer, the magnetic circuit of a 3-phase induction motor has an air gap. … [Read more...] about Comparison between Induction Motor and Transformer
Star-Delta starting is frequently referred to as “Soft-starting” a motor. But what is soft about his starting method? Why is it used? What are the advantages? What are the disadvantages? Let’s first analyse what Star Delta starting is! It will be explained by using an example motor. What is Star Delta starting? Star Delta starting is when the motor is connected (normally … [Read more...] about How Star Delta Starter Works?
Here is a demo on how to reverse the direction of a three phase induction motor using contactor set, including mechanical and electrical interlocking. Watch it and share with your friends. … [Read more...] about Reverse the Direction of a Three Phase Motor Using Contactors
The three-phase induction motors are the most widely used electric motors in the industry. They work on the principle of electromagnetic induction. Due to the similarity in the working principle of the transformer, it is also known as the rotating transformer. They run at essentially constant speed from no load to full load. However, the speed is frequency dependent and … [Read more...] about Three Phase Induction Motor: Construction and Working Principle