ABB REF620 NBFNAANNNDA1BBN1XF | Integrated protection relay

ABB REF620 NBFNAANNNDA1BBN1XF relay protection device

Functional Features

Multiple protection functions: It has multiple protection functions such as overcurrent protection, ground fault protection, distance protection, differential protection, etc., 

and can be flexibly configured to adapt to different power system application scenarios.

Measurement and monitoring: It can measure electrical parameters such as voltage, current, and power in real time, and monitor the operating status of the system to 

detect abnormal situations in a timely manner.

Communication function: Supports multiple communication protocols, such as IEC 61850, Modbus, etc., making it easy to communicate with substation automation systems 

or other external devices for remote control and monitoring.

Flexible configuration: Through the configuration software, users can flexibly configure the parameters and functions of the protection device according to their actual needs, 

meeting the personalized requirements of different projects

Rated voltage: usually supports multiple rated voltage levels, such as 110V, 220V AC/DC, etc., to adapt to different power systems.

Rated current: There are generally two types of rated current inputs, 5A and 1A, which can be selected according to the actual current size.

Measurement accuracy: The measurement accuracy of voltage and current can usually reach 0.2% -0.5%, which can accurately measure electrical parameters in the power 

system.

Protection action time: Rapid protection action time, usually between tens of milliseconds to hundreds of milliseconds, ensures timely disconnection of the faulty circuit in 

case of a fault, protecting the safety of equipment and systems.

Communication interface: Provides multiple communication interfaces, such as Ethernet interface, serial port, etc., to facilitate communication and connection with other 

devices.