## Difference between DOL, Star Delta, VFD and Soft starter

Difference between DOL, star delta, vfd and soft starter: The difference between DOL- direct online starter ,star delta, vfd, and soft starter is explained below with operation diagram and their uses in different applications. DOL-Direct on line Starter: here the starting current will be 6 times of full load current. A bimetallic thermal overload relay…

## How to calculate cable size for LT Motors

LT Motor: The low voltage or low tension motor is called LT motor. the LT motors mostly operated between the voltage ranges from 240v to 415v . LT motors mostly having high current and low voltage. moreover we can say up to 1KV motors are LT motors. HT motor: The high voltage or high tension…

## Battery charging calculation

How to Calculate the charging Time and Charging current for battery Charging? here we will going to discuss about how to calculate the battery charging current and time. it would be Easily explain with 100Ah battery to calculate  Battery Charging Time and battery Charging Current. Battery Charging Current and Battery Charging Time formula Here is…

## Why Numerical Relay over Electromechanical Relay

What is Relay: Generally we all are knows relay is used to protect the electrical equipment from abnormal condition. there are different types of relay used in electrical field. some of the relay like over voltage, over current protection , under voltage protection, earth fault protection. earlier days we are used mechanical relay and also…

## Circuit Breaker Tripping Schemes

What is circuit breaker: Generally we all are know circuit breakers are used to protect the equipment from abnormal or faulty conditions. and also circuit breaker also used for control the equipment ON/OFF. there are different types of circuit breaker used in electrical field and depend on voltage and current rating its classified into different…

## Causes of failure of insulator

What is Insulator: Generally insulator are used to prevent the current flow in the electrical circuit.  the insulator not allow to transfer the supply from one side to another side. here we will see about what are the causes involved in failure of insulator.There are different types of insulators used in electrical field. They are…

## Magnetic Saturation

Magnetic saturation: If we have a tendency to increase the mmf of a magnet, the denseness within the core to of the is additionally inflated. currently we are able to raise an issue, whether or not there’s any limitation of skyrocketing denseness within the core of magnet with increasing applied mmf. the solution is…