In today’s digital era, our daily lives depend heavily on the cloud. Financial transactions, communications, and business operations all rely on data centers. These facilities are the hidden engines of the modern world. However, they are now under intense scrutiny. Data centers frequently make headlines for their massive power consumption and their impact on the…
Category: Information for Engineers
Autotransformers in EHV Power Systems: Theory, Maths & Practice
Autotransformers are among the most misunderstood yet critically important assets in modern power systems. While they appear deceptively simple at low voltages, at EHV levels (380–500 kV) they become system-defining components that directly influence fault levels, insulation coordination, grounding, and grid stability. This article provides a complete, utility-grade explanation of autotransformers, covering theory, mathematics, IEC…
The Rise of SF6-Free Switchgear: Alternatives, Advantages, and the Road Ahead
SF₆-free switchgear is no longer a future concept. Manufacturers have already begun mass-producing equipment without SF₆, and many installations worldwide are operating successfully today. In this post, we will discuss the following: The End of SF6? Why the Electrical Industry is Going SF6-Free For over 50 years, Sulfur Hexafluoride (SF6) has been the backbone of the electrical…
Classification of Lightning Protection Systems
In this post we are providing you an overview of Classification of Lightning Protection Systems (LPS). Lightning Protection Systems (LPS) are categorized into four classes (I, II, III, and IV). This classification is based on the level of lightning protection required. These classes are defined in IEC 62305 (Protection Against Lightning). The higher the class…
Safety Assessment at Saudi Aramco Part 2
This is a safety assessment exam at Saudi Aramco part 2 and it covers MCQs 21-30. It is a practice test for all the interested safety profeccionals at Saudi Aramco, which is the world’s largest oil company and a major player in the energy sector based in Saudi Arabia. The primary purpose of this document is to test the…
Safety Assessment at Saudi Aramco
This is a safety assessment exam and a practice test for all the interested safety profeccionals at Saudi Aramco, which is the world’s largest oil company and a major player in the energy sector based in Saudi Arabia. The primary purpose of this document is to test the your knowledge on critical safety protocols and…
Synchronous Condenser, STATCOM, STATCOM with BESS, and SVC
In modern power systems, maintaining voltage stability and reactive power balance is becoming more challenging — especially with the increasing share of renewable energy.Several technologies are used to provide reactive power support and grid stability. The most common ones are: Each of these solutions has its own advantages, depending on the type of system and…
Technical Strategies to Improve Transmission Line Efficiency
In modern power systems, the efficiency of transmission lines directly affects overall grid performance, operating costs, and reliability. Since transmission losses primarily occur due to conductor resistance and reactive power flow, engineers must carefully evaluate both design and operational strategies to minimize these losses. Below is a detailed technical review of methods to improve transmission…
Difference between MCB, MCCB, ACB, and VCB
MCB, MCCB, ACB, and VCB are most common types of Circuit breakers. Circuit breakers are essential devices that we use to protect electrical systems from faults and overloads. They come in different types depending on the application, voltage level, and breaking capacity. MCB (Miniature Circuit Breaker) MCCB (Moulded Case Circuit Breaker): ACB (Air Circuit Breaker):…
Technical Interview Questions for Electrical Engineers
Breaking into the electrical engineering field requires not only strong academic knowledge but also practical awareness of how systems work in real projects. Whether you are preparing for a substation, OHTL, UGC, or utility-based role in Saudi Arabia and the Gulf, these 25 commonly asked technical interview questions will help you sharpen your fundamentals. Q1….