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12 Routine Maintenance
12.1 Safety Instructions
Due to the effect of ambient temperature, humidity, dust and vibration, the MV Station and
the inner components will be aging and worn out. To ensure the system safety and maintain
the efficiency of the MV Station, it is necessary to carry out routine and periodic
maintenance.
All measures, which can help the MV Station in good working conditions, are within the
maintenance scope.
For maintenance of transformer, please refer to corresponding manuals.
12.1.1 Safety Instructions
Lethal voltage inside the MV Station!
Wait at least 5 minutes after MV Station stops before opening the cabinet door.
Make sure the device internal is completely voltage free before any work on the
MV Station.
Only qualified personnel can perform the work described in this chapter.
Do not leave any screws, washers or other metallic parts inside the MV Station to
avoid damages to the module.
Sand and moisture penetration may affect the performance of electric devices
inside the MV Station!
Do not perform electrical connection in sandy season or when the ambient
relative humidity is above 95%.
Perform electrical connection at fine weather days.
Disconnection of the AC & DC switches in no way implies that there is no voltage
of the cable connection terminals inside the AC and DC cabinet. To avoid the risk
of electric shock before maintenance work,
Disconnect the AC & DC switches;
Disconnect the upstream and downstream switches of the module.
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