System Manual
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Voltages may still be present on cable connection terminals inside the MV Station even
though the switches are disconnected. To avoid electric shock hazard, perform the
following operations before starting maintenance work,
Disconnect all the switches of the MV Station;
Disconnect the upstream and downstream switches of the MV Station.
9.1.1 Safety Rules
Respect the following five rules in maintaining or servicing the MV Station to ensure the
safety of the maintainer.
Disconnect the MV Station from all the external connections and internal power
supplies.
Ensure that the MV Station will not be started accidentally.
Verify that the MV Station interior is discharged completely with a multimeter.
Disconnect all the power supply.
Ensure that the high voltage output has no feedback power source.
Ensure there is no personnel operating at high voltage wire end.
All auxiliary power supply must be disconnected without the risk of connecting to the
power again.
Perform necessary ground and short circuit connection.
Cover the adjacent electrical components with insulation cloth during operation.
9.2
Maintenance
9.2.1 Introduction
With IP54 protection degree, the MV Station can be installed outdoors. Harsh environment
condition or long-time operation, however, may cause aging and damage to the MV Station.
Check and maintain the MV Station periodically and replace the aged components, so as to
effectively extend the service life and increase the device performance inside the MV Station.
Unschedulded maintenance is also required, especially when the system
performance is poor.
9.2.2 Maintenance Interval
Maintain the MV Station and internal electric devices periodically to ensure the good
