Blog by G K Agrawal
A few of the important technical blog posts are Neutral wire voltage, Power factor, Open circuit CT transformer, why 30 mA RCCB breaker, Motor type in train engine, AFCI AFDD breaker, and AC DC supply danger to humans.
We will discuss the need, advantage, and use of neutral in a three-phase induction motor in the complex VVVF (Variable voltage variable frequency) drive system.
You will learn how the use of neutral in an induction motor can make fault finding easy and improve protection and the reliability of the system
Why use Neutral in three-phase induction motor in VVFD Read More »
In this post, you will learn the concept of the connections of the Zener diode in series and parallel. I explain the total voltage and power calculation in different combinations.
I will also explain the difference between theoretical and practical values of the voltage and current distribution, and also the total useful watts of the Zener didoes.
Zener Diodes in series and parallel connections, calculation Read More »
I will explain in this post the various applications of Zener diode in the electronics and power electronics fields with circuit diagrams.
I will also explain the function of these circuits in this article and also try to give you extra knowledge as per my experience in the use of Zener diode during the designing of my few projects and products.
Applications of Zener Diode Read More »
I will explain the difference between neutral wire and earth in the AC supply in this technical article. A total of 17 differences between neutral and earth are discussed in this article.
The three-phase AC supply consists of 4 wires. R phase, Y phase, B phase wire, and a neutral wire. In addition to that, we have earth wire also. The neutral wire and earth wire of the AC supply have totally different purpose.
Difference between Neutral and Earth – 17 differences Read More »
The voltage difference between neutral and earth in AC supply depends on so many factors. I will discuss various factors affecting the voltage difference between the neutral and earth in the AC supply.
The Voltage of the Neutral wire and earth Read More »
In this post, I discuss: why “power factor correction” and its method, the causes and problems of low power factor, and how to correct power factor and its advantages. You will also learn fixed step type and continuous variable PF correction, the need for fast correction (SVC), and the need for an extra inductor.
There are many more advantages of power factor correction discussed in this article.
I will also discuss extra knowledge as per my industry experience of designing such control equipment. The power factor correction is done for many reasons.
Low Power Factor Correction, Its Causes, How and Why to Correct PF Read More »
