1MRS750881-MUM REC 5239Remote Monitoring and Control UnitTechnical Reference Manual1.7. Abbreviations1.8. Related documentsAI Analogue inputASCII American standard code for information interchangeCB Circuit breakerCBFP Circuit-breaker failure protectionCPU Central processing unitCT Current transformerDI Digital inputDLC Digital line carrierDO Digital outputEMC Electro-magnetic compatibilityHSPO High-speed power outputI/O Input/outputIRF Internal relay faultL/R Local/remoteLED Light-emitting diodeLNT LON Network ToolLON Local Operating NetworkLV Low voltageMIM Matching transformer input moduleMV Medium voltageNO/NC Normally open/ normally closedPCB Printed circuit boardPLC Programmable logic controllerPO Power outputPOD Process object dictionaryPSC Power supply and charger unitRMU Ring main unitRTU Remote terminal unitSNVT Standard network variable typeSO Signal outputTCS Trip circuit supervisionVT Voltage transformerName of the manual Document IDREC 523 manualsRE_ 5_ _, Protection, Monitoring and Control, Installation Manual 1MRS750526-MUMREF 54_, REM 54_, RET 54_, REC 523, Configuration Guidelinea 1MRS750745-MUMTechnical Descriptions of Functions 1MRS750889-MCDProtocol descriptionsDNP 3.0 Remote Communication Protocol for REC 523,Technical Description1MRS750958-MUMIEC 60870-5-101 Remote Communication Protocol for REC 523,Technical Description1MRS750956-MUM
