NR provides innovative protection solutions for power substation with state-of-the-art numerical protections, software and services. Our solutions cover all protective relays and their panels in substation for the voltage level from 10kV to 1000kV, including transformer protection, transmission line protection, busbar protection, shunt reactor protection, circuit breaker protection, feeder protection and capacitor protection.

All these numerical protections from NR are based on an advanced modular hardware platform. The relay provides special measurements to prevent any undesired trip. The relay has two independent data acquisition paths, one for a fault detector and the other for protection and its logic. Tripping outputs are supervised by the fault detector to prevent a mal-operation caused by any component failure in the relay. The universal modules can be replaced conveniently and the cost of the maintenance will be reduced.