News | May 7, 2014

ABB Launches Grid Monitoring Relay For Wind Turbine Power Connection To Grid

New grid feeding monitoring relay, CM-UFD.M33, protects wind turbines from unstable grids or faults by disconnecting electric energy source from the grid; also monitors voltage and frequency, ensuring safe, reliable and proper grid connection at all times.

ABB, the wind industry’s leading power technology provider, recently announced it is introducing a powerful new grid feeding monitoring relay for wind applications, as part of the AWEA Windpower 2014 conference and exhibition.

The new low-voltage grid feeding monitoring relay CM-UFD.M33, also known as the Grid Tie Relay, is a state of the art component that protects wind turbines from unstable grid activity or faults by disconnecting the electric energy source from the grid. The relay monitors voltage and frequency in single and three phase grids and trips the coupling switch when electrical values are not within set parameters. If a fault is detected, the grid feeding monitoring relay sounds an alarm, displays a message and signal the alarm cause to the control system.

The new Grid Tie Relay demonstrates ABB’s global expertise in advanced design and product development that meets the needs of the increasingly sophisticated wind industry.

"The main purpose of the Grid Monitoring Relay is to ensure proper connection of the wind turbine power to the grid at all times while taking into account safety, equipment protection and optimum power production,” said Allen Austin, Global Segment Manager for ABB Low Voltage Products Division. “I’m pleased that ABB has launched the new Grid Tie Relay, which is now the most compact grid monitoring relay available today with state-of-the-art design features that can be easily integrated into existing wind turbine systems.”

This solution, which is also designed for solar applications, uses a UL tested and certified product that encompasses multiple functions in a compact plug and play package. Operating mode/status display, user interface, integrated protective functions, various control inputs and outputs, vector shift detection, interrupted neutral detection, automatic reconnection as result of false errors, test mode function with fault memory storage to assist in system trouble shooting and password protection for optimum security. It also provides visual status indication that can be connected to a PLC for remote monitoring.

To see this new state-of-the-art solution from ABB, visit the ABB booth #4148 at the AWEA Windpower 2014 conference and exhibition at the Mandalay Bay Convention Center in Las Vegas. 

About ABB
ABB is a leader in power and automation technologies that enable utility and industry customers to improve performance while lowering environmental impact. The ABB Group of companies operates in around 100 countries and employs about 150,000 people. The company's North American operations, headquartered in Cary, North Carolina, employ over 30,000 people in multiple manufacturing, service and other major facilities. For more information, visit