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Showing posts from June, 2025

India Sets New National AC Temperature Guidelines: A Bold Step Towards Climate Action

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 In a decisive move to combat rising temperatures and growing energy consumption, the Government of India has announced mandatory air conditioner (AC) temperature settings for the first time. The new rule requires all sectors — including residential, commercial, industrial, and transport — to set AC temperatures no lower than 20°C and no higher than 28°C . This announcement was made by Union Power Minister Manohar Lal Khattar on Tuesday. He emphasized that the regulation comes in response to increasing power demand due to extreme heat and the fast-growing use of cooling systems across the country. 🌍 Climate Challenge Meets Energy Efficiency India is one of the countries most affected by climate change, with frequent and intense heatwaves becoming the new normal. As temperatures soar, the use of air conditioners is rapidly rising, placing a massive burden on the nation’s energy infrastructure. The new regulation aims to strike a balance between comfort and sustainability. B...

What is Transformer Breathing?

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What is Transformer Breathing? Understanding the Natural Breathing Process in Oil-Filled Transformers In power distribution systems, oil-filled transformers are common because they provide excellent insulation and cooling. These transformers exhibit a unique phenomenon known as “breathing”, which is essential for their safe and reliable operation. Transformer breathing refers to the process where a transformer inhales and exhales air due to changes in oil volume caused by temperature fluctuations. It’s a natural response to thermal expansion and contraction of the insulating oil inside the transformer. When a transformer operates under electrical load, the internal temperature rises. This causes the insulating oil to expand, increasing its volume. As the oil expands, it pushes out the air present inside the conservator tank — a cylindrical oil reservoir mounted above the main tank. This is known as “breathing out.” Later, when the transformer load reduces or it cools down during lower ...

Dangers of Loose Connections in the Main Electrical Line

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Dangers of Loose Connections in the Main Electrical Line This document outlines the significant dangers associated with loose electrical connections in the main electrical line of a building or residence. It emphasizes the potential for fire hazards, equipment damage, and electrical shock, highlighting the importance of regular inspections and proper maintenance to ensure electrical safety. Loose electrical connections in the main electrical line pose a serious threat to the safety and integrity of any electrical system. These seemingly minor issues can lead to a cascade of problems, ranging from flickering lights to devastating fires. Understanding the dangers associated with loose connections is crucial for homeowners, building managers, and electricians alike. One of the most significant dangers is the increased resistance at the point of the loose connection. This increased resistance causes the electrical energy to be converted into heat. Over time, this heat can build up to dange...

Diesel Generator Protection

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  Keeping the Lights On, Safely: Understanding Diesel Generator Protection In a place like Manakunnam, Kerala, where power outages can disrupt daily life and critical operations, emergency diesel generators are lifesavers. But these powerful machines require careful attention, especially when it comes to safety and preventing damage. Just like any complex piece of machinery, a diesel generator has numerous potential points of failure. That's where built-in protection mechanisms come into play. Think of these protections as vigilant guardians, constantly monitoring the generator's vital signs and ready to step in if something goes wrong. From engine health to electrical output, a well-protected diesel generator is a reliable and long-lasting asset. Let's delve into the essential layers of protection that safeguard your diesel generator: Protecting the Heart: Engine-Related Safeguards The engine is the prime mover, the very heart of your generator. Several protections are in ...

Why Impedance Earthing is Used for Generators

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Generators play a crucial role in providing backup and emergency power. However, ensuring their safe and stable operation requires a well-designed earthing system. One widely used method is impedance earthing , which connects the generator’s neutral to the ground through a resistor or reactor . This blog explores why impedance earthing is used for generators , especially in larger or critical installations. 🔧 What is Impedance Earthing? Impedance earthing involves inserting a resistance (or reactance) between the generator’s neutral and earth. It is commonly categorized as: Low Resistance Earthing (LRE): Typically allows higher fault currents (e.g., hundreds of amps), useful for selective protection. High Resistance Earthing (HRE): Limits fault currents to low levels (e.g., under 10 amps), reducing damage and allowing continued operation. ⚡ Why Use Impedance Earthing? 1. Limit Fault Current In a generator, especially those connected to sensitive or critical systems...