49
Safety Rules
Respect the following five rules in maintaining or servicing the MV Station to ensure the
safety of the maintainer.
• Avoid any accidental re-connections.
• Verify that no voltage or current is present with appropriate measurement instrument.
• Ground and short-circuit whenever necessary.
• Cover possible live parts to avoid accidental contact.
• Ensure sufficient escape room.
• Wait at least 10 minutes after the device stop completely to operate the MV Station
inside. Ensure that the MV Station is completely voltage-free.
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
performance of the MV Station.
The maintenance interval described in this chapter is indicative only. The actual interval
depends on the on-site environment condition. If the MV Station is located in harsh
environment places, for example desert arrears, the maintenance interval shall be
shortened. Particularly, cleaning and anti-corrosion processing should be performed more
frequently.
If the MV Station is located in desert areas, it is advisable to check thoroughly the MV
Station inside and outside and clean completely after the sand storm.
table 9-1 Maintenance (once every two years)
Check Item Check Method
Cable connection
Check whether power cables are loose. If so, properly connect
them according to specified torques.
System Manual 9 Routine Maintenance
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