Feeder protection, Motor protection

XMR-A is a part of XMORE platform, the complete range of IEDs for Medium Voltage application including feeder, motor, generator, transformer and capacitor bank.

Thanks to Hardware and Software modularity XMR-A is flexible and scalable in term of application and performance as:

  • Overcurrent and Earth fault protection (StandardSW configuration)
  • Additional double Earth Fault input for two-side Transformer protection (SW PAC Xtra Current)
  • Additional Earth Fault Directional Overcurrent(SW PAC Xtra Voltage)
  • Small sized Motor Protection (SW PAC Motor)


Enhancements to protect and analyze power system operation in disturbance conditions:

  • Up to 5 analogue inputs
  • 32 sample for cycle Oscillography fault recording
  • 64 sample for cycle measurement for accuracy of protection element

Enhanced Time synchronization solution for SOE recording:

  • Precision Time Protocol PTP according to IEC1588
  • SNTP

Communication Security through redundancy protocol and Cyber Security package :

  • High available Seamless Redundancy support HSR
  • Parallel Redundancy Protocol support PRP
  • Rapid Spanning Tree Protocol RSTP
  • Advanced built in Cyber Security

Widely implemented in Smart Grid and Substation Automation System:

  • IEC61850 Ed.1/Ed.2
  • IEC 870-5-103
  • Modbus (Serial/TCP)
  • DNP3 (Serial/TCP)


Standard Protective & control elements
  • Under Current - 37
  • Negative sequence overcurrent transformer - 46LT
  • Negative /positive sequence current ratio - I2/I1
  • Thermal Image Transformer - 49LT
  • Phase overcurrent side H and side L - 50/51
  • Maximum Residual Overcurrent - 50N/51N
  • Calculated Residual Overcurrent - 50N/51N (Comp)
  • Low impedance restricted earth fault - 64REF
  • Automatic Recloser - 79
  • Breaker Failure - BF
  • CT Supervision - 74CT
  • Trip Circuit Supervision - 74TCS
  • Remote TRIP
  • 2ndh-REST
  • Multiple Profiles (A, B, C, D)
SW Pack optional configuration
  • Thermal Image Motor/Generator - 49MG
  • Maximum Residual Overcurrent(2) - 50N/51N(2)
  • Locked Rotor - PMSS - F51Rn
  • Maximum number of startings (Restart inhibition) - 66
  • Negative sequence overcurrent Motor/Generator - 46M, 46G

XMR relay needs special hardware modules. The following functions can be enabled only with the presence of the relative module:

  • Thermal with Pt100 Probes - 26
  • Lock-out - 86
  • Arc flash
  • Maximum Residual Overcurrent(2) - 50N/51N(2)
  • Residual Overvoltage - 59N
  • Ground directional overcurrent - 67N




XMR-P is a part of XMORE platform, the complete range of IEDs for Medium Voltage application includ ...