Connection of the motor winding:There are several ways of connecting a three phase motor winding . The most common ones 3-phase connection are: 1)delta(∆)-connection  2)star (Y)-connection. 3-phase connection of induction motor windingAccording to the IEC 60034-8 standard, the windings of a 3-phase standard motor can be connected in either...

Different types of Induction motor protection given below:Quick links  1)Thermal Protection2)Thermal Model3)Frequent Startup Supervision4)overload protection5)overheating protection6)Protection against Insulation FailuresIntroduction of motor protection:Electric motors are exposed to many kinds of disturbances and stress. Part of the disturbances...

Different types of Induction motor protection given below:Quick links  1)Thermal Protection2)Thermal Model3)Frequent Startup Supervision4)overload protection5)overheating protection6)Protection against Insulation FailuresIntroduction of motor protection:Electric motors are exposed to many kinds of disturbances and stress. Part of the disturbances...

Lighting transformer used in industriesFig: Type of Lighting TransformersLighting Transformers are designed to supply power to lighting equipment in a commercial / industrial / domestic unit. Its primary supply connected to higher voltage source and secondary is to be connected to load.  Lighting transformers serves as isolation between...

Calculation of current drawn by motor under different load condition like full load,on no load condition are given below for 1 phase 230 & 3 phase 440v supply:1) Single Phase Motor draws Current = 7Amp per HP.2) 3 Phase Motor draws Current = 1.5Amp per HP.3) Full Load Current of three Phase Motor = HPx1.25  4) Full Load Current of single...

How does diesel generator(induction generator) work?When induction motor running as generator it takes mechanical power and supply electrical power from stator. To run the induction motor as generator, it's slip must be less than zero. i.e negative Negative slip show that the rotor is running at a speed above the synchronous speed. Thus when slip...

 content:                 Direct current (DC)                 Main applications of direct current                   various factors...

 Soft Starter:  SoftStarters :A soft starter is another form of reduced voltage starter for AC.  induction motors.  The soft starter  similar to a primary resistance or primary reactance starter in that it is in series with the supply to the motor.  The current into the starter equals the current out.  The soft...

 Soft Starter:  Soft Starters :A soft starter is another form of reduced voltage starter for induction motors.  The soft starter similar to a primary resistance or primary reactance starter.In that it is in series with the supply to the motor.  The current into the starter equals the current out.The soft starter employs solid...