BE1-951
Testing and Maintenance
13-3
panel turns ON, all of the output relays are disabled, internal logic point ALMREL is set, and the relay is
taken off line. For more information on self-test diagnostics and relay trouble alarms, see Section 6,
Reporting And Alarm Functions, Alarms Function.
Status Reporting Features
General status reporting is available through the ASCII command interface using the RG-STAT (report
general, status) command. This report assembles all of the information required to determine the relay
status. For more information on general status reporting, see Section 6,
Reporting and Alarm Functions,
General Status Reporting, General Status Report.
Fault reporting and target data is dependent on the proper setting of trip, pickup, and logic trigger
expressions (via the SG-TRIGGER command) and the assignment of protective elements to be logged as
targets (via the SG-TARG command).
While the design of the relay facilitates obtaining and verifying targets and event data, it is not always
necessary to utilize the relay functions to determine if the device operated while testing. You may simply use
an ohm-meter or continuity tester to monitor the output contact status.
The following is a summary of ASCII commands where target and event data may be viewed.
RF provides a directory of fault summary reports in memory
RF-# provides a summary report giving targets, timing and event data
RG-TARG provides target data only
RS provides a summary of sequence of events records
RS-F# provides a detailed SER report for the selected fault event #
RS-# provides a detailed SER report on the last # events
For more information on HMI menu trees, see Section 10,
Human-Machine Interface.
Event Reporting Features
The SER function of the relay records protective element output changes, overcurrent element pickup or
dropout, input/output contact state changes, logic triggers, setting group changes, and setting changes. For
more information on event reporting, see Section 6,
Reporting and Alarm Functions, Sequence of Events
Recorder.
The following summarizes the reporting capabilities of the relay through the front panel HMI.
Trip LED (Flashing): flashes during pickup of protective elements based on the pickup logic
expression set in the SG-TRIGGER command.
Trip LED (Sealed-In): stays lit after trip logic becomes TRUE based on the trip logic expression set in
the SG-TRIGGER command.
TARGETS, Screen 1.2: provides target data.
ALARMS, Screen 1.3: provides alarm data (including BKR FAIL, REC FAIL, AND REC LO).
FAULT REPORTS, Screen 4.1: indicates new fault reports
EVENT REPORT, Screen 4.2: gives the number of new events logged by the SER since the last
new counter reset (executed only by the RS=0 command). Events must be viewed using the RS and
RS# commands listed in the previous paragraph.
ACCEPTANCE TESTING
Although Basler Electric performs detailed acceptance testing on all new relays, it is generally recommended
that you perform each of the following acceptance test steps before installation. Performing these steps tests
each function of the BE1-951 relay to validate that the relay was manufactured properly and that no
degradation of performance occurred as a result of shipping.
Test Equipment
Suitable test equipment requires a minimum of two current source elements, two voltage source elements,
and a contact wetting voltage. Test equipment should also have the capability of varying the frequency and
the angle of the voltage and current sources.
