Month: May 2025

Instrument Transformers vs. Power Transformers: Key Differences & Uses Explained (CT, PT, Substations)

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Got it! Here’s your improved WordPress blog in plain text format (no HTML tags), ready to paste directly into the WordPress visual editor — with proper headings, internal linking suggestions, transition words, and improved readability. Power Transformer vs Instrument Transformer: Key Differences Explained In the modern electrical grid, transformers play a silent but crucial role. … Read more

Accuracy Class of CTs and PTs: Explained with Examples

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CT PT Accuracy Class

When designing or analyzing an electrical measurement and protection system, one of the most important aspects to understand is the accuracy class of Current Transformers (CTs) and Potential Transformers (PTs). These instrument transformers are essential for stepping down high voltages and currents to safe and measurable levels. But how accurately they perform that job depends … Read more

Potential Transformers (PTs): Working Principle, Types, and Applications

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In the vast world of electrical power systems, accuracy and safety are paramount. One of the essential devices ensuring both is the Potential Transformer (PT), often referred to as a voltage transformer. From monitoring high voltages in substations to feeding precise input to protective relays and meters, PTs play a crucial role. This article explores … Read more

Transformer Primary and Secondary Current Calculation: Formula, Example, and Diagrama

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Transformer

Transformer Primary and Secondary Current Calculation: Formula, Example Transformers are the backbone of power distribution systems. Whether you’re designing, analyzing, or studying transformers, it’s essential to know how to calculate transformer HV and LV side current accurately. You’ll learn: How to calculate transformer HV and LV side current? Transformer primary and secondary current formula? 3-phase … Read more

Current Transformers (CTs) Explained: Working, CT Ratio, Burden, Accuracy Classes

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Introduction to Current Transformers In power systems, measuring high currents directly can be dangerous and impractical. That’s where Current Transformers (CTs) come in — they “step down” large currents to smaller, manageable values for meters and protection relays. Think of them like binoculars for current: they help devices “see” high currents safely and clearly. What … Read more

Air Circuit Breaker (ACB): Working Principle, Types, Applications & Comparison

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Introduction Air Circuit Breakers (ACBs) play a pivotal role in modern electrical infrastructures, particularly in industrial and commercial environments. They safeguard circuits by interrupting excessive current during overloads or faults, using air as the arc-quenching medium. Thanks to their reliability, ACBs are widely deployed in low to medium voltage systems. What is a Circuit Breaker? … Read more

Step-by-Step Solar Panel Installation Guide

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Step-by-Step Solar Panel Installation Guide Assess Your Energy Needs Begin by evaluating your household’s energy consumption. Review your electricity bills to determine your average monthly usage in kilowatt-hours (kWh). This assessment helps in sizing your solar system appropriately. Site Evaluation and Planning Conduct a thorough site assessment to determine the best location for your solar … Read more

Engineering, Procurement, and Construction (EPC)

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Engineering, Procurement, and Construction (EPC): EPC Contracts Explained: Meaning, Structure, and Role in Solar and Infrastructure Projects In the world of infrastructure, power generation, and energy distribution, the term EPC has become synonymous with efficient project delivery. Whether you’re constructing a highway, a thermal power station, or a large-scale solar photovoltaic (PV) plant, the EPC … Read more

Most asked Electrical Interview Questions

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Basic Electrical Engineering Interview Questions 1. What is Ohm’s Law? Ohm’s Law states that the current (I) flowing through a conductor between two points is directly proportional to the voltage (V) across the two points and inversely proportional to the resistance (R).​ Formula: V = I × R Applications: Designing electrical circuits. Calculating resistance, current, … Read more

Electrical Switchgear Explained: Types, Functions, and Key Applications for Power Distribution

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  Understanding Electrical Switchgear: Types, Functions, and Applications Electrical switchgear is a vital component of power systems that ensures safe, controlled, and reliable operation of electrical circuits. As electricity moves from generation plants to end-users, switchgear plays a crucial role in regulating power flow, detecting faults, and isolating problematic sections to prevent widespread damage. With … Read more