A dosing pump can also be called as a displacement pump, these pumps are usually diaphragm pumps and they are mostly used for dosing in the low-pressure range. A dosing pump is used to add a small amount of chemical or gas…

ELCB stands for earth leakage circuit breaker, it is a protective device which would suddenly switch the electricity off in case of any leakage of electricity. This device can protect the people from electric shock, ELCB is also called as RCD or…

In order to understand an electrical diagram, we must know the electrical symbols, an electrical diagram is composed of symbols, words, numbers, and lines. The electrical symbol is used to describe all the installations in an electrical diagram. An electrical diagram describes…

In a three-phase, motor the delta and star connection is the way in which the coils are connected. Star and delta connection is used to reduce the complexity of the wires that are required for a three-phase system connection. In the case…

What is a miniature circuit breaker and what is the use of it A miniature circuit breaker is a small electromagnetic circuit breaker and it does the protection of electrical circuits from overcurrents. An MCB can protect the circuit from overcurrents and…

What is a megger and what does it do A megger is an electrical measuring instrument, it can be used to measure the insulation resistance. A megger has a DC generator and an ohmmeter in it. A normal ohm meter cannot be…

Introduction In an electrical device, the quality of insulation is an important factor. There will be changes in the insulation property of electrical devices according to certain factors like environmental conditions, temperature, time, etc. So we need to check the insulation resistance…

What is a variable frequency drive A variable frequency drive is a device that is used to control the power consumption of the motors. If we use VFD then we can decrease the amount of energy that the motor used for its…

What is a protective relay In a power system power reliability is an important factor and a power system is comprised of generators, transformers, distribution circuits, etc. in order to get a proper and uninterrupted power the power system failure must be…

1.How electronic regulator differs from ordinary rheostat regulator Loss of power is very less while comparing the electronic regulator with an ordinary regulator and the reason for that is electronic regulator speed can be controlled so the needed power is used. In…