•
Checking programmable LEDs
•
Reading event history
•
Checking fault records
•
Analyzing DFR recordings
Document the disturbance before clearing the information from the
protection relay.
Only authorized and skilled personnel should analyze possible errors and
decide on further actions. Otherwise, stored disturbance data can be lost.
5.2.1
DFR recording triggering
DFR recordings are normally triggered by protection relay applications when they detect
fault events. DFR recordings can also be triggered manually or periodically. The manual
trigger generates an instant disturbance report. Use this function to get a snapshot of the
monitored signals.
5.2.2
DFR record analysis
The protection relay collects disturbance records of fault events which are set to trigger the
DFR recorder. DFR data is collected and stored for later viewing and analysis. The DFR
recorder data can be read and analyzed, for example, with PCM600.
For more information, see the PCM600 documentation.
5.2.3
DFR reports
PCM600 can be used for creating reports of DFR recorder data.
For more information, see the PCM600 documentation.
Section 5
1MAC456939-IB D
Protection relay operation
78
620 series ANSI
Operation Manual
