Chapter 6. Description of Operation of Protection Subsystem
6-31
M7IRDA2003I
7IRD-A/J/M: Distribution Protection & Control Terminal
© ZIV APLICACIONES Y TECNOLOGÍA, S.L.U. 2020
Organization of Event Record
The Event Record keeps a list of the last 100 events generated, where new events replace the
oldest events. The saved information in each of the records includes:
- Phase and Ground current and voltage measured at the moment the event was
generated.
- Event date and time.
- Event description.
The organization of the record is such that simultaneous events generated by the same function
will not occupy separate records, and will use only one position of the event memory.
Simultaneous events are those that occur separately within a time interval of 1ms, which is the
resolution time of the recorder.
It is necessary to remember that the possibility exists to mask those events that are not
necessary. The events can be masked by communications, within General Settings.
Important: It is convenient to mask those events which could be generated in excess,
given that the record could be filled (100 events) with these and erase other previous
events that are more important.
Consulting Records
From the HMI of the unit, the information for the event record can be accessed following the
sequence Information - Records - Event Records (without needing the password). Chapter 8
offers the related information to consult the event record using the HMI.
The communications program ZiverCom
®
, has an access system for the event record. The
information appears separately for each of the events in the table. If the IED provide
oscillographic register the Event Records consulting only can be effectuated via
communications.
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