GE RPV311, Technical Manual

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RPV311
Distributed Multifunction Fault Recorder
Chapter 16: Maintenance and
Troubleshooting
This chapter provides information about proper equipment maintenance and
troubleshooting.
The troubleshooting part of the chapter allows an error condition on the IED to be
identified so that appropriate corrective action can be taken.
1 Maintenance
1.1 Maintenance Checks
In view of the critical nature of the application, Alstom Grid products should be
checked at regular intervals to confirm they are operating correctly. Alstom Grid
products are designed for a life in excess of 20 years.
The devices are self-supervising and so require less maintenance than earlier designs
of protection devices. Most problems will result in an alarm, indicating that remedial
action should be taken. However, some periodic tests should be carried out to
ensure that they are functioning correctly and that the external wiring is intact. It is
the responsibility of the customer to define the interval between maintenance
periods. If your organisation has a Preventative Maintenance Policy, the
recommended product checks should be included in the regular program.
Maintenance periods depend on many factors, such as:

The operating environment

The accessibility of the site

The amount of available manpower

The importance of the installation in the power system

The consequences of failure
Although some functionality checks can be performed from a remote location, these
are predominantly restricted to checking that the unit is measuring the applied
currents and voltages accurately, and checking the circuit breaker maintenance
counters. For this reason, maintenance checks should also be performed locally at
the substation.
Before carrying out any work on the equipment you should
be familiar with the contents of the Safety Section and the
ratings on the equipment’s rating label.