General Maintenance; In-Service Maintenance; Out-Of-Service Maintenance; Unscheduled Maintenance (System Interruption) - GE L60 Instructions Manual

Line phase comparison system
Hide thumbs Also See for L60:
Table of Contents

Advertisement

CHAPTER 10: MAINTENANCE

10.2 General maintenance

The L60 requires minimal maintenance. As a microprocessor-based relay, its characteristics do not change over time.
Expected service life is 20 years for UR devices manufactured June 2014 or later when applied in a controlled indoor
environment and electrical conditions within specification.
While the L60 performs continual self-tests, it is recommended that maintenance be scheduled with other system
maintenance. This maintenance can involve in-service, out-of-service, or unscheduled maintenance.

10.2.1 In-service maintenance

1.
Visual verification of the analog values integrity, such as voltage and current (in comparison to other devices on the
corresponding system).
2.
Visual verification of active alarms, relay display messages, and LED indications.
3.
LED test.
4.
Visual inspection for any damage, corrosion, dust, or loose wires.
5.
Event recorder file download with further events analysis.

10.2.2 Out-of-service maintenance

1.
Check wiring connections for firmness.
2.
Analog values (currents, voltages, RTDs, analog inputs) injection test and metering accuracy verification. Calibrated
test equipment is required.
3.
Protection elements setting verification (analog values injection or visual verification of setting file entries against
relay settings schedule).
4.
Contact inputs and outputs verification. This test can be conducted by direct change of state forcing or as part of the
system functional testing.
5.
Visual inspection for any damage, corrosion, or dust.
6.
Event recorder file download with further events analysis.
7.
LED Test and pushbutton continuity check.
To avoid deterioration of electrolytic capacitors, power up units that are stored in a de-energized
state once per year, for one hour continuously.

10.2.3 Unscheduled maintenance (system interruption)

View the event recorder and oscillography or fault report for correct operation of inputs, outputs, and elements.

10.3 Retrieve files

Data, oscillography, log, events, routing, ARP, and other files can be transferred using the EnerVista software to a computer
or to a USB flash drive when using the graphical front panel. These files can be requested by technical support staff.
To retrieve a file using EnerVista software:
1.
If the CyberSentry option is enabled, log in to the EnerVista software using the Administrator role.
2.
In the Online Window area of EnerVista, access Maintenance > Retrieve File. The window opens.
3.
Note the destination folder to which the file is to be saved at the top and change it if required. You can copy the path
or open the folder for convenience at this time.
4.
Select the file to download from the UR device.
L60 LINE PHASE COMPARISON SYSTEM – INSTRUCTION MANUAL
GENERAL MAINTENANCE
10
10-3

Advertisement

Table of Contents
loading

Table of Contents