Section 15 Basic IED functions15.1 Self supervision with internal event list15.1.1 IdentificationFunction description IEC 61850identificationIEC 60617identificationANSI/IEEE C37.2device numberInternal error signal INTERRSIG - -Internal event list SELFSUPEVLST - -15.1.2 ApplicationThe protection and control IEDs have many functions included . Self supervision withinternal event list (SELFSUPEVLST) and internal error signals (INTERRSIG) functionprovide supervision of the IED. The fault signals make it easier to analyze and locate afault.Both hardware and software supervision is included and it is also possible to indicatepossible faults through a hardware contact on the power supply module and/or through thesoftware communication.Internal events are generated by the built-in supervisory functions. The supervisoryfunctions supervise the status of the various modules in the IED and, in case of failure, acorresponding event is generated. Similarly, when the failure is corrected, acorresponding event is generated.The event list is updated every 10s hence, an event will not be visible inthe event list as soon as it is created.Apart from the built-in supervision of the various modules, events are also generated whenthe status changes for the:• built-in real time clock (in operation/out of order).• external time synchronization (in operation/out of order).• Change lock (on/off)1MRK 511 286-UUS A Section 15Basic IED functions325Application manual
