Category Archives: Electric Current

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Vacuum Contactor vs Circuit Breaker Selection Considerations

To compare the application of medium-voltage circuit breakers and of fused contactors, we must understand the basic characteristics of each switching technology. The below table shows the major characteristics of medium-voltage circuit breakers and medium-voltage fused contactors that influence the application. Of course, the table entries are generalized, and the information varies by the voltage… Read More: Vacuum Contactor vs Circuit Breaker Selection Considerations »

How to use a Fluke Digital Multimeter

What is a Digital Multimeter? Digital Multimeter also famous as DMM is simply an electronic instrument that measures electrical parameters including AC/DC volts, AC/DC current, resistance. In addition digital multimeter may have a variety of special features that are designed for a wide number of applications like frequency, temperature, capacitance and continuity in a circuit.… Read More: How to use a Fluke Digital Multimeter »

What is Corona Effect in Electrical Transmission Lines

what is corona effect in transmission lines

The phenomenon of ionization of surrounding air around the conductor, hissing noise and production of Ozone gas in an overhead transmission line is known as Corona Effect. Corona discharge is a process by which a current flows in a conductor with a high potential into a neutral fluid, usually air, by ionizing that fluid so… Read More: What is Corona Effect in Electrical Transmission Lines »

Star or WYE (Y) Connection

In this method of inter-connection the similar ends either the ‘start’ or ‘finish’ are joined together at point N. This common point N is called star point or neutral point. Ordinarily only three wires are carried to the external circuit giving 3-phase, 3-wire star connected system but sometimes a fourth-wire, known as neutral wire is… Read More: Star or WYE (Y) Connection »

Resistance vs Conductance

The opposition to flow of electrons (due to bonds between protons and electrons, as well as to collisions) is called a electrical resistance (R). Or Resistance may also be defined as “The property of the electric circuit which opposes the flow of current”. The practical unit of electric resistance is ohm (.Q). It (ohm) is… Read More: Resistance vs Conductance »

Voltage Stabilizer & How it Works

What is voltage stabilizer? Voltage stabilizer is an equipment that stabilizes voltage. The process of stabilization happens by bringing voltage to a desirable level whenever there is any kind of fluctuation in the power system. Therefore we can say that voltage stabilizer is a current regulator used to maintain and control voltage to produce a… Read More: Voltage Stabilizer & How it Works »