Understanding Overload Protection Relay: Essential for Electrical Safety
An Overload Protection Relay is a critical component in modern electrical systems, designed to safeguard electrical equipment from damage caused by excessive current. These relays are widely used in industries, households, and other sectors where electrical equipment must operate safely within defined limits. When an overload occurs, the relay detects the abnormal increase in current and triggers a protective action, such as disconnecting the power supply, thereby preventing potential equipment failure or fire hazards. Function of Overload Protection Relay The primary function of an overload protection relay is to monitor the current flowing through an electrical system. If the current exceeds the preset threshold, which is typically determined by the equipment’s rated capacity, the relay intervenes to prevent further damage. This is achieved by tripping the circuit, cutting off the power supply to the equipment and thereby protecting it from the harmful effects of prolonged overcurrent conditions.
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