Protection Element Starts And Trips; General Events; Fault Records; Maintenance Reports - GE MiCOM P40 Agile Technical Manual

Measurements and Recording
MiCOM P40 Agile P442, P444
Alarm
Bit 21
Bit 22
Bit 23
Bit 24
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Bit 26
Bit 27
Bit 28
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Bit 30
Bit 31
1.2.5

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 MiCOM S1
Agile, rather than for the user, and is therefore invisible when the event is viewed on the
LCD.
1.2.6

General Events

A number of events come under the heading of 'General Events' - an example is shown
below:
Nature of Event
Level 1 Password Modified
Either from User Interface, Front
or Rear Port
A complete list of the 'General Events' is given in chapter P44x/EN PL.
1.2.7

Fault Records

Each time a fault record is generated, an event is also created. The event simply states that
a fault record was generated, with a corresponding time stamp.
Note that viewing of the actual fault record is carried out in the 'Select Fault' cell further down
the 'VIEW RECORDS' column, which is selectable from up to 5 records. These records
consist of fault flags, fault location, fault measurements etc. Also note that the time stamp
given in the fault record itself will be more accurate than the corresponding stamp given in
the event record as the event is logged some time after the actual fault record is generated.
1.2.8

Maintenance Reports

Internal failures detected by the self monitoring circuitry, such as watchdog failure, field
voltage failure etc. are logged into a maintenance report. The Maintenance Report holds up
to 5 such 'events' and is accessed from the 'Select Report' cell at the bottom of the 'VIEW
RECORDS' column.
Each entry consists of a self explanatory text string and a 'Type' and 'Data' cell, which are
explained in the menu extract at the beginning of this section and in further detail in the
following table (the lis is not exhaustive):
Text
Bus Failure
SRAM Failure
BB RAM Failure
Event Text Explanation
SG-opto Invalid Setting group via optos invalid
A/R No Checksync CB Fail to A/R
V<1 Alarm
V<2 Alarm
V>1 Alarm
V>2 Alarm
COS Alarm
User Alarm 1
User Alarm 2
User Alarm 3
User Alarm 4
Displayed Text in Event Record
PW1 Edited UI, F or R
Explanation
Bus Check Failure
SRAM Failure
BB RAM Failure
P44x/EN MR/Hb6
(MR) 7-9
Displayed Value
0