Tag: electrical engineering

Lightning Arresters Types | Electrical Darwaza

Types of Lightning Arresters

The lightning arrester protects the electrical equipment from lightning. It is placed very near to the equipment and when the lightning occurs the arrester diverts the high voltage wave of lightning to the ground. The selection of arrester depends on the various factors like voltage, current, reliability, etc. The lightning arrestor is mainly classified into […]

Difference Between Pump and Motor | Electrical Engineering

motor vs pump

The motor is an electromechanical device, which consists of rotating conductors and magnetic field to transform electrical energy into mechanical torque. Whereas pump is a hydro-mechanical device that converts mechanical torque into hydraulic/pressure energy. Motoring action ( electric one ) obtained based on Faraday’s law of electromagnetic induction and motor law. Whereas pumping action achieved […]

Different Types Of Transformer | Electrical Darwaza

transformer types

A transformer is a device working on mutual inductance principle to convert electrical energy from one voltage/ current level to another. There are different types of transformers used for different purposes. (1) POWER TRANSFORMER Laminated core Transformer Toroidal Transformer Auto transformer Variable auto transformer Induction regulator Transformer(high voltage transformer) Polyphase transformer Grounding transformer Phase-shifting transformer Variable-frequency […]

Difference between a Contactor and a Relay | Electrical Darwaza

contactor vs relay

A contractor is an electromagnetic device which is used to make or break of an electrical circuit. there is two type of contractor. power contactor. auxiliary contactor. Power contactor is used in power circuit like switch on/off of a motor capacitor. while auxiliary contactor is used to switch on or off of a control circuit. a power contactor have 3 main contacts while an auxiliary contactor has many contacts like 1no+1nc 2no+2nc ect..power contactor is generally used where we required to make and break a large current carrying circuit. The Relay is similar to an auxiliary contactor which is used […]