Measurements and Recording
P74x/EN MR/N
1, P742, P743
(MR) 8-
Alarm P741 P742 P743
2.3.5 Protection element starts and trips
Any operation of protection elements, (either a start or a trip condition) will be logged as an
event record, consisting of a text string indicating the operated element and an event value.
Again, this value is intended for use by the event extraction software, such as S1, rather than
for the user, and is therefore invisible when the event is viewed on the LCD.
2.3.6 General events
A number of events come under the heading of ‘General Events’ - an example is shown
below:
Nature of Event
Displayed Text in Event
Record
Displayed Value
Level 1 password modified,
either from user interface,
front or rear port.
PW1 modified UI, F, R or R2 0 UI=6, F=11, R=16, R2=38
A complete list of the ‘General Events’ is given in the Relay Menu Database (P74x/EN MD),
which is a separate document, available for downloaded from our website.
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