Directional Overcurrent NPID800 / NPID800R
The NPID800 / NPID800R relays protect three-phase electrical networks against all types of phase to earth and phase to phase faults. 

These relays are the same as the NPI800 / NPI800R but with the option of directional overcurrent protection.  N.B. Overcurrent protection can be forward for all elements, reverse for all elements or non-directional for all elements.  These relays do not permit a combination of directional and non-directional overcurrent protection settings. 

ANSI functions for NPID800 / NPID800R: 
(50 / 51 / 50N / 51N or 67 / 67N) / 46 / 46BC / 49 / 50BF / 74TC / 86

These relays are part of the NP800 range, offering multi-function protection and communication via Modbus (RS485) or Modbus TCP (Ethernet).  A full brochure is available on the NP800 range page