GE  239-RTD-AN Motor protection relay

GE 239-RTD-AN is a motor protection relay produced by General Electric (GE). The following is its detailed introduction:

1、 Product Overview

The GE 239-RTD-AN motor protection relay is designed to provide basic electrical and mechanical protection for motors, ensuring stable operation and extended service life. It integrates multiple protection functions, such as thermal overload protection, phase short circuit protection, overcurrent protection, undercurrent protection, etc., which can comprehensively monitor the operating status of the motor and take timely measures in case of faults to prevent damage.

2、 Main features

Multiple protection functions: GE 239-RTD-AN supports 15 selectable thermal overload protection curves, which can be selected according to the actual situation of the motor, providing precise protection. At the same time, it also has multiple protection functions such as phase short circuit, overcurrent, undercurrent, etc., ensuring that the motor can be effectively protected under various working conditions.

Mechanical protection: using undercurrent function to detect suction loss or discharge valve closure, providing mechanical protection for the pump; Utilize undercurrent function to mechanically protect the fan and prevent flow loss in the boiler due to airflow or steam in the mine; Use the mechanical jamming trip function to provide mechanical protection for gears, pumps, fans, sawmills, and compressors to prevent mechanical jamming.

Ground fault protection: Using the ground fault function to detect winding moisture and short circuits, ensuring personnel safety and avoiding the risk of electric shock.

Hot memory locking: prevents operators from abusing motors and equipment, ensuring the normal operation of motors.

Multi fixed value setting group: supports multiple sets of fixed value settings, which can be adjusted according to different application scenarios and needs, improving the flexibility and accuracy of protection.

Embedded simulation function: makes the testing process simple and fast, reducing maintenance costs.

Modbus protocol support: Supports serial communication through Modbus protocol, enabling remote monitoring, programming set points, issuing commands, and diagnosing faults, improving the automation level and maintainability of the system.

3、 Technical specifications

Brand: GE

Working voltage: 24V (rated)

Power supply voltage: 220V

Rated current: 5A

Alarm function: supports sound and light alarms

Communication interface: may include HDMI interface (specific model may vary)

Display type: may include IPS or HDMI types (specific models may vary)

Memory expansion capacity: up to 128MB (specific models may vary)

System memory: may vary depending on different models, such as 8MB, etc

Working environment temperature: -40 to 100 ℃

Input method: current input

Output frequency: 50Hz

4、 Application Fields

GE 239-RTD-AN motor protection relays are widely used in the field of industrial automation, such as automotive manufacturing, machinery manufacturing, petrochemicals, metallurgy, and other industries. It is suitable for various occasions that require motor protection, such as the protection and control of equipment such as pumps, fans, compressors, etc.

5、 Summary

The GE 239-RTD-AN motor protection relay is a comprehensive and reliable motor protection device. It integrates multiple protection functions, supports multiple communication protocols and fixed value settings, and can meet the needs of different application scenarios. Meanwhile, its compact design, easy installation, and maintenance characteristics have also made it widely used in the field of industrial automation.