Function

REF620 feeder protection and measurement and control device, as a dedicated feeder protection device, is specially used for protection, control, measurement and monitoring of public and industrial power grids, including radiation, ring and mesh power grids. The REF620 provides feeder overcurrent and earth fault protection that can be applied to both ungrounded neutral networks and resistive or impedance neutral grounded networks. In addition, by utilizing the device’s advanced inter-station communication function, REF620 can also be used for ring mesh power distribution network or radial network protection.

Application range

The application fields cover electric power, water conservancy, transportation, petroleum, chemical industry, coal, metallurgy, data center, new energy and other industries.

REF620 NBFNAANNNDA1BBN1XF Comprehensive protection relay