Overload Protection Relay (OPR) is a critical device in electrical systems, ensuring that equipment like motors, transformers, and other electrical appliances are protected from damage due to excessive load or current. The core function of an overload protection relay is to detect overcurrent conditions and disconnect the affected equipment before it can suffer permanent damage. This article will explore the operation, types, applications, and benefits of overload protection relays in industrial and commercial settings.
What is an Overload Protection Relay? An Overload Protection Relay is an electrical protection device designed to detect excessive current or load in electrical circuits. It is used primarily in systems where overcurrent can cause serious damage, such as motors, transformers, and power distribution networks. The relay operates by continuously monitoring the current flowing through the system and comparing it to predefined safety thresholds. If the current exceeds the set limit, the relay will activate and open the circuit, preventing further damage to the equipment. How Does an Overload Protection Relay Work?
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