The optimal management of electrical power systems is based in particular on the reliability, availability and communication skills of protection, measurement and automation devices.

The NPV911 offers a modular voltage protection solution for substations. Voltage and frequency protection with optional cards (I/O, communication...) and powerful logic programming possibility make NPV911 optimal for demanding load shedding or automatic transfer applications.

The NPV911 communicates using various protocols including IEC 61850 substation communication standard.