ORION ITALIA IPR-D, Инструкция по эксплуатации

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Chapter 7: Events recorder
CURRENT PROTECTION RELAY - IPR-D Manual P/N: IPR-D GBM 01/09/2006 7.1
7. Events recorder
Press ACTUAL VALUE and select the page: EVENT [
Æ
Actual value 3: EVENTS] to display the last
10 events.
7.1 DEFINITION OF “EVENT” AND STORING
IPR-D is equipped with an Event recorder in which the following data are stored:
•
intervention of protection or alarm due to ground overcurrent,
•
changing of status of an output contact,
•
changing of status of a digital input,
•
system status (circuit breaker status, discrepancy signalling, reaching of the limit of mechanical
operations, remote trip commands, block trip and other events non included in the previous points)
during the operation of the relay.
All events, up to 10 max., will be stored in a memory buffer operating in FIFO (First-In, First-Out)
mode. Once 10 events are stored, the oldest event is cleared by the new one occurred.
7.2 EVENTS FORMAT
Each event is characterized by the line parameters values when the event is occurring. The stored
parameters are the following:
•
description of the event,
•
ground current,
•
event date and time.