Different types of Starter for Motor

Different types of Starter for Motor 1)DC -TWO point starter A two-point starter is used for starting dc motor which has the problem of over-speeding due to loss of load from its shaft. -Three point starter A three-point starter is used for starting a dc shunt or compound motor. The coil of the hold-on electromagnet is connected is series with the shunt-field coil. - Four point starter The...

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Different types of Induction Motor

Different types of Induction Motor SINGLE PHASE INDUCTION MOTOR 1.    Split phase induction motor There are various types of self-starting motors, known as split phase motors. Such motors have a starting winding displaced 90 electrical degrees from the main or running winding. In some types, the starting winding has a fairly high resistance, which causes the current in this...

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Why LT motors are delta connected and HT motors are star connected?

Why LT motors are delta connected and HT motors are star connected?There is both reason technical and commercial. 1.     In star, phase current is same as line current. But phase voltage is 1/1.732 times line voltage. So insulation required in case of HT motor is less. 2.     The starting current for motors is 6 to 7 times full load current. So start-up...

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Brief Idea of Induction Motor

Brief Idea of Induction MotorInduction motor: is an energy conversion device that converts electrical energy into useful rotational kinetic energy, it is an application of the Faraday's law of induction. Sectional View 3-ph Induction Motor   Drawing of Induction Motor Induction motor are...

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Air Insulated Switch-gear VS Gas Insulated Switch-gear

Air Insulated Switch-gear VS Gas Insulated Switch-gear Gas Insulated Switch-Gear Air Insulated Switch-Gear Limitations of Air Insulated Switchgears (AISs)Large dimensions due to statutory clearances & poor dielectric strength of air Insulation deterioration with ambient conditions and susceptibility...

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Every Challenge Is An Opportunity

Edison, one of Europe’s oldest power companies, which was founded in 1884 in Milano, owns the Fontanamora hydroelectric plant that generates three megawatts (MW) of renewable power from turbines and auxiliary machinery. The plant is situated at Lombardy by a fast-flowing river at the bottom of a steep...

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RENEWABLE ENERGY DEMAND IN EUROPE REACHES RECORD LEVELS

RENEWABLE ENERGY DEMAND IN EUROPE REACHES RECORD LEVELS The demand for renewable electricity in Europe, documented with Guarantees of Origin (GO), continued to grow in 2015. The growth is up more than 8% from 2014 and surpassed 340 TWh. Behind this growth are thousands of businesses and millions of...

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