Md Nazmul Islam

We all heard about relay but we are seeking out a simple relay wiring diagram. It's a very popular topic for all electrical engineering students. Today I will discuss it in an easy manner. Let's start. Before going into details, I want to introduce the relay first. What is relay? Imagine,...

We can do three phase supply by a single-phase transformer banking system. While transformer banking it’s necessary to have the right polarity. Today we will discuss how to do the polarity test of transformer? What is the Transformer Polarity test?  Transformer polarity means the way of the induced voltage in...

Pole and tower aren’t the same things. But do we know what is electric pole and tower? We mistake by thinking they are the same. They have a lot of differences. Let's talk about what is electric pole and tower? What is Electric Pole and Tower and Difference between them Poles Generally,...

The disease is common in the human body. The same goes for devices. We recover by taking medicine and devices get recovered by detecting problems, troubleshooting, and taking proper steps. Transformers can also face the disease. And it can cause various issues. Today we will discuss the problems of...

Power factor is not an unknown topic for us. But still, some questions roam in our heads. We have heard of power factor leading, lagging, even unity. Have you ever thought, can the power factor be zero? And In which condition? Today we will discuss the zero power factor. Power...

We can easily guess that the distance protection relay has a relation with distance by its name. ...

Have you heard about the Load break switch before? It's one of the substation switching devices. Today we are going to acquainted with this device. Before the detailed presentation, I want to brief you on the switchgear system, in a nutshell, using a nice example. Now, the thrill goes...

A buck-boost transformer is a transformer, which adjusts the voltage of AC machines. Its power is calculated in kVA unit rating. Let's have a detailed discussion on what is a buck-boost transformer? In How Much Frequency It Will Work? Buck-boost transformer only works in alternating current. The transformers only change current and...

Do you know how to find what is tripping my circuit breaker? Sadik went to his grandpa's home during summer vacation. He traveled by train and went to the village. At night, Sadik and his cousins were listening to spooky stories from their grandma. The silent environment with...

Do you know how to perform the Delta Wye Transformer Neutral Grounding? In a delta-wye transformer, can you isolate a neutral wire? The answer will be "NO". Because there is no requirement of neutral in a three-phase connection. As you know, "where milk is available, why should I maintain...

We all know about the Buchholz relay. Buccholz relay work as the protector of the transformer. ...

Nikola Tesla the mind behind the invention of Alternating Current (AC) and transmission technology is a true example of genius. This article highlights a Nikola Tesla interview that was conducted by John Smith in 1899. Smiljan, a little town in the Lika-Senj region, is the birthplace of one of history's...