GE Reason RT411, Техническое руководство

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Chapter 4 – Installation RT411
RT411 25
Figure 13: Euro Type label for connections
3 Powering Up
Before energizing the unit, familiarize yourself with all the risks and attention indicators
in the equipment frame.
•
Connect the power supply (including the ground lead) to the appropriate
terminals, and the unit will power up;
•
If the time input is connected and selected correctly, the indicator Act will light up;
•
To turn off the unit, switch off the external switch or circuit breaker.
In case the unit does not behave in a way here described, carefully check all power and
signal connections. See Maintenance chapter for additional suggestion for problem
diagnosis.
4 Preventive Maintenance Actions
In view of the critical nature of the application, GE products should be checked at
regular intervals to confirm they are operating correctly. GE 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 organization 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.
Preventive Actions
For optimum performance of Reason RT411, perform the following preventive
maintenance procedures and actions: