Description

A 239-RTD motor protection relay is a type of protective device used in electrical power systems to monitor and protect electric motors from damage caused by various faults and abnormal conditions. The RTD stands for Resistance Temperature Detector, which is a type of temperature sensor used to measure the temperature of the motor windings.

The 239-RTD relay is designed to provide a comprehensive protection scheme for motors and includes features such as overcurrent protection, phase imbalance protection, thermal overload protection, ground fault protection, and more. The relay uses the temperature readings from the RTDs to detect overheating conditions in the motor and trigger a trip signal to shut down the motor before it sustains any damage.

The 239-RTD relay is commonly used in industries such as oil and gas, chemical processing, water and wastewater, and others where motor-driven equipment is critical to the process and downtime can be costly.