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Intelligent Power Today Magazine
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Introducing Intelligent Power Today

Welcome to Intelligent Power Today Magazine, our publication that explores and explains the who, what, where, when, why and how of intelligent electrical devices, a collection of complex mechanical devices and sophisticated control systems used in industrial, commercial, and institutional facilities—also known as intelligent buildings.

According to the Institute for Building Efficiency, intelligent buildings use smart technologies to improve system functionality, control operating costs, and to keep building occupants safe, secure, comfortable, and, of...

Buyer's Guide

News & Trends

Counterfeiting Kills

Each year, the counterfeiting of well-known brands and products continues to rise, creating an even more threatening problem. Such well-known counterfeited brands, including consumer safety and critical electrical products, are estimated to be five to seven percent of world trade. The International...

Electrical Protection

Overcoming Relay Coordination Challenges

Relay coordination in electrical transformer protection is a critical process that ensures the safety and reliability of the power system. Effective coordination involves configuring multiple protective relays to operate in harmony, such that they correctly identify and isolate faults with minimal impact on the power network. This task becomes increasingly complex in large-scale power systems with numerous interconnected transformers and circuits. In complex power systems with multiple transformers and interconnected feeders, ensuring proper coordination between protective relays becomes a significant challenge.

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Relay Coordination: Ensuring Selective Fault Isolation

A well-coordinated protection scheme employs strategically placed protective relays that sense fault currents and trip the appropriate circuit breaker to isolate the faulted section with minimal disruption to the rest of the system. This selective tripping minimizes equipment damage and facilitates faster restoration of power.

Several factors contribute to the complexity of relay coordination in large...

Electrical Protection Articles