Sungrow SG2500HV-30, Системное руководство

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Respect the following five rules in maintaining or servicing the inverter to ensure the
safety of the maintainer.
•
Disconnect the inverter from all the external connections and internal power supplies.
•
Ensure that the inverter will not be started inadvertently.
•
Verify that the inverter interior discharges completely with a multimeter.
•
Perform necessary ground and short circuit connection.
•
Cover the adjacent electrical components with insulation cloth during operation.
12.2 Maintenance
12.2.1 Introduction
The inverter can be installed outdoors. Harsh environmental condition or long-time
operation, however, may cause aging and damage to the inverter. Check and maintain
the inverter periodically and replace the aged components, which can effectively
prolong the service life and improve the performance of the devices inside the inverter.
Unscheduled maintenance is also required,esp.,when the system
performance is poor.
12.2.2 Maintenance Interval
Maintain the inverter and internal electric devices periodically to ensure the good
performance of the inverter.
The maintenance interval described in this chapter is indicative only. The actual interval
depends on the on-site environment condition. If the inverter is located in harsh
environment place, for example, desert areas, the maintenance interval shall be
shortened. Particularly, cleaning and anti-corrosion processing should be performed
more frequently.
If the inverter is installed in the desert areas, it is recommended to check the inverter
thoroughly and clean it carefully after sand storm.
Check the module fans inside the inverter and the fans on top of the cabinet
periodically for abnormal operation and abnormal noise due to dust penetration.
Stop the inverter and clean the dust if necessary.
Wait at least 20 minutes after the inverter discharge completely. Before
cleaning, make sure, with the multimeter, the inverter internal is discharged
completely to avoid electric shock.
12 Routine Maintenance System Manual