REF620 ABB
The REF620 is a protection relay designed for the protection, control, measurement, and supervision of power transformers, generators, motors, and other electrical equipment. Some of the key features of the REF620 include:
- Advanced numerical algorithms for reliable and fast protection
- Flexible and configurable I/O options to meet different application requirements
- Large, high-resolution display for easy monitoring and control
- Ethernet and serial communication options for remote access and diagnostics
- Built-in logic and math functions for customized control and automation
- Comprehensive event and disturbance recording for post-fault analysis
In addition, the REF620 offers a wide range of programmable settings and parameters to adapt to specific system needs and operating conditions. These include:
- Protection functions, such as overcurrent, under/overvoltage, frequency, differential, and distance protection
- Control and monitoring functions, such as load shedding, voltage regulation, breaker control, and data logging
- Communication protocols, such as IEC 61850, Modbus, Profibus, and DNP3
- User interface settings, such as language, display format, password protection, and user levels
To ensure optimal performance and reliability, it is important to properly configure and maintain the REF620 according to the manufacturer’s recommendations and guidelines. This includes regular firmware updates, calibration, and testing, as well as adherence to safety precautions and environmental conditions. For more information and support, please refer to the REF620 product documentation and ABB customer service.
The REF620 is a numerical transformer protection relay manufactured by ABB. It belongs to the Relion® protection and control product family. The relay provides various protection functions for power transformers, including overcurrent, differential, and thermal protection. It also offers advanced features such as voltage regulation, monitoring, and control capabilities. The REF620 is designed to meet the requirements of modern power systems, providing reliable and efficient protection for transformers in high voltage applications.
