PR SERIES DIGITAL MOTOR PROTECTION RELAY i Introduction i Main Features Data recording and analysis. Variety of protection functions. Fault alarm, automatic power off function. RS485 remote communication and control. Real time motor operating status monitoring. Flexible configuration, can customized for specific needs. Digital motor protection relays, integral to motor systems, ensure motor reliability and safety by detecting internal faults (overcurrent, single-phase operation, grounding, bearing issues, and abnormal winding temperatures) and monitoring external conditions to prevent grid fluctuations and voltage surges from impacting the motor. These relays safeguard motor system stability and power grid reliability by monitoring and controlling internal and external issues and isolating interference sources. It can effectively prevent motor damage and the spread of interference back into the power grid. Application Automated industry. High voltage switchgear. Solar and wind energy systems. Power plant, power grid dispatching. Transmission towers and substations. •With this function oOptional function -Without this function Technology of Electrical Automatic

PR200 SERIES ECONOMIC MOTOR PROTECTION RELAY i Introduction PR200 motor protection relay comes in a small and economical appearance and designed to real time monitor three-phase power lines for abnormal conditions. can be used with motors below 690V/ 820A. optional RS485 communication port can upload monitoring data and alarm status to the remote control system. PR200 provides various protection tripping to avoid motor failure. When PR200 senses that motor operating parameters reach preset alarm value, it will trigger DO port to warn of abnormal conditions; when abnormal parameters continue to...

i Introduction PR240 motor protection relay can use with motors less than 690V/ 820A. It can realize a variety of control operation, such as measurement, self-diagnosis, maintenance management, field bus communication and other functions. PR240 can real-time monitoring the scene signal, provide various protection trip to avoid motor failure. optional RS485 port can upload monitor data and alarm status to remote control system. • Provide various start methods. • User free to configure each protection function. • Build in sequence of event function, max 100 trip records. • With programmable analog...

Main Features PR260 series motor protection relay is suitable for protecting and monitoring the low-voltage motors with rated voltage less than 690V and rated current up to 820A. It equipped with 7-channels switch monitoring, can be configured as needed. It supports Modbus-RTU communication bus and can transmit monitoring data and alarm status to the remote control system. PR260 can real time monitor status of motor and detect various faults, such as abnormal start, overload, overcurrent, overheating, blocked rotor, phase loss, unbalance, under voltage, overvoltage, under power, underload, grounding...

Technology of Electrical Automatic

an Q i CT selection table Motor rated power (Kw) 1. External protection CT selection guide, typical in 380V motor system 2. If motor rated current more than 200A, need use 5A external CT i External current transformer (ECT) Motor rated power (Kw) Measurement 100A-200A Secondary to protector 100mA Maximum cable size 30mm Technology of Electrical Automatic

Technology of Electrical Automatic