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Why line chokes are used in VFD

Why line chokes are used in VFD: Almost 100 % of the vfds are starting with series line choke. Line chokes are nothing but an...

Why induction motor Takes high starting current

Why induction motor takes high starting current: While starting an induction motor is the biggest headache for maintenance engineer. For this we need to build...

Torque Equation of Three Phase Induction Motor

Torque Equation of  Three Phase Induction Motor: The torque (T) is developed in a three phase induction motor depends upon the following three factors: As...

Types of insulation class motor winding Technology

Ideal insulation material should have some basic qualification: high dielectric strength, sustained at elevated temperature high resistivity or specific resistance low dielectric hysteresis good...

Different Types of duties in motor construction

Different Types of duties in motor: S1 duty Continues duty S2 duty short time duty S3 Intermittent duty S4 Intermittent periodic duty with starting ...

What is skewing of an induction motor?

What is skewing of an induction motor: The rotor or stator slot of the induction motor skewed through some angle so that the bars lie...

Types of Encloser employed in induction motor

Types of Encloser employed in induction motor: TEFC: Totally enclosed fan cooled Motor This totally enclosed fan cooled motors are fully enclosed with cooling augmented...

How Induction Motor as a rotating Transformer

How Induction Motor as a rotating Transformer: As we know that, the transformer in which two windings are magnetically coupled and when one winding is...

How to avoid star delta Timer failure in star delta starter

How to avoid star delta Timer failure in star delta starter: In star delta starter timer is doing most important function. Due to starter delta...

What is motor connection diagram 302 in Nameplate details

What is motor connection diagram 302 in Nameplate details. There are some standard motor terminal connections are there. The motor or generator manufacturer delivers the...