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ALSTOM - MiCOM Alstom P841

MiCOM P841 is a multifunctional line terminal IED for control and back-up protection in transmission and sub-transmission feeder bays.

Basic description:

  • Multifunctional line terminal IED for control and back-up protection in transmission and sub-transmission feeder bays 
  • Management of single or dual breaker autoreclose logic schemes with synchrocheck
  • Extremely versatile, e.g. managing leader-follower reclosing schemes in the event of dual breaker application 
  • Transmission-class circuit breaker failure protection 
  • Operator control and plant status indication facilities - 10 fully programmable function keys and tri-colour LEDs
  • Single box solution for autoreclose, CB failure and check synchronising 
  • Readily interfaces with SCADA protocols and IEC 61850 
  • Efficient monitoring, control, recording and digital communications - full feeder management 
  • The ideal solution where the autoreclose and breaker fail schemes are preferred to be kept discrete from the main protection relays
  • Single pole & three-pole breaker operation supported with independent supervision & condition monitoring statistics 
  • IEC 61850 redundant Ethernet, supporting self healing ring, RSTP, dual homing or PRP 
  • Graphical programmable scheme logic (PSL) eases protection scheme creation, and avoids the need for external logic controllers





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