13-14 BE1-951 Testing and Maintenance 9328900990 Rev L
Fault Summary Reports
Reset "new" fault summary directory records to "0" by first gaining write access to the reporting functions
("R" password) and transmitting the RF-NEW [= 0] command. Verify that new faults is "0" by transmitting
the RF command.
Refer to Section 6, Reporting and Alarm Functions, Fault Reporting, Fault Summary Reports, for setting
details.
Sequence of Events Recorder (SER)
Reset the "new" SER records counter to "0" by first gaining write access to the reporting functions ("R"
password) and transmitting the RS-NEW [= 0] command two times. Verify that new records is "0" by
transmitting the RS command.
Refer to Section 6, Reporting and Alarm Functions, Sequence of Events Recorder, for setting details.
Just Prior to Energizing - Report Documentation
After completing the previous steps, capture and save a General Status Report by transmitting the RG-
STAT command. This report should be kept in the permanent record file of the device so the data can be
used for comparison in future maintenance procedures.
Also, save the entire settings record for future reference by transmitting the "S" command. Use this record
during the maintenance cycle or during the analysis of an operation to verify that the “as found" settings
are exactly as left during the commissioning process.
Refer to Section 6, Reporting and Alarm Functions, General Status Reporting, for details.
In Service Readings
Just after energizing the equipment, transmit the "M" command to the relay. Use this record to review the
following:
• M-I and M-V to verify VT and CT ratios.
• Polarity of M-WATT and M-VAR readings to verify polarity of VT and CT connections.
• M-IQ and M-V2 to verify proper phase-sequence connections.
• M-SYNC to verify proper phase relationship of VP and VX.
• Anything else that the user might find helpful.
Save this record along with the RG-STAT record mentioned earlier for future reference.
PERIODIC TESTING
Because the BE1-951 has extensive internal test capabilities, periodic testing of the protection system
can be greatly reduced. Relay operating characteristics are a function of programming instructions that do
not drift over time. Thus, the user may wish to verify items that the relay's self-testing features cannot
completely determine. Periodic testing might consist of the following settings and function checks:
• Verify that the set points that were proven during commissioning have not been changed.
• Verify that the inputs and outputs are interfacing properly with the rest of the protection and
control system.
• Verify that the power system analog parameters used by the protection and control functions are
being measured accurately.
Settings Verification
Verification of the relay digital I/O connections can be accomplished in different ways. The method used
depends on your preferences and practices. You might choose to use either of the following two methods:
• Repeat the digital I/O connection and label verification under commissioning tests.
• Monitor SER, status, and fault reports for proper sensing of digital signals and proper output
tripping during normal operation.
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