Inverter Maintenance - Sungrow Central

• Site conducted

• Client

• Date

  Date

• Inspection carried out by

Inverter Maintenance

• Inverter Name

External Checks

• Check if there is flammable materials on top of and around the station; and if there are other factors that may impair the system operation

  Pass

  Fail

  N/A

• Check if the station and the foundation are firmly connected and if there is rust

  Pass

  Fail

  N/A

System State

• Check the station and internal devices for deformation and damages

  Pass

  Fail

  N/A

• Check the station and internal devices for abnormal noise

  Pass

  Fail

  N/A

• Check if the station internal and device enclosure temperature is too high

  Yes

  No

  N/A

• Check if the station internal humidity and dust deposition are too heavy

  Yes

  No

  N/A

Inverter Cleaning

• Check if the circuit board and the component are clean;

  Yes

  No

  N/A

• Check the temperature and dust of the heat-sink. Use vacuum cleaner to clean the module if necessary;

  Yes

  No

  N/A

• Does the air filter need changing?

  Yes

  No

  N/A

• Check the air inlet and outlet

  Yes

  No

  N/A

Warning Labels

• Check if the warning labels are clearly visible

  Pass

  Fail

  N/A

Cable Connections

• Check if all cable entries are sealed properly

  Pass

  Fail

  N/A

• Check if there is water leakage inside the station

  Pass

  Fail

  N/A

• Check station can close and open freely

  Pass

  Fail

  N/A

• Check the sealing strip is sealed properly

  Pass

  Fail

  N/A

• Check if the power cable connections are loose

  Yes

  No

  N/A

• Check if the power cables and control cables are damaged

  Yes

  No

  N/A

• Check if the wrap belt of the connection terminals is strip-off

  Yes

  No

  N/A

Air Inlet / Outlet

• Check the air inlet filter and ventilation ducts of the station

  Pass

  Fail

  N/A

Fan

• Check if there is crack in the fan blade

  Pass

  Fail

  N/A

• Check if there is abnormal noise during the running of the fan

  Pass

  Fail

  N/A

Device Maintenance

• Check the corrosion of the metal components

  Pass

  Fail

  N/A

• Check the contactors (auxiliary switches and micro-switches)

  Pass

  Fail

  N/A

• Check the running parameters (esp., voltage and insulation)

  Pass

  Fail

  N/A

Safety Function

• Check the emergency stop button and the LCD stop function;

  Pass

  Fail

  N/A

• Simulation shutdown

  Yes

  No

  N/A

LCD / HMI

• Check if the time displayed on the LCD display is correct

  Yes

  No

  N/A

Sign Off

• Name and Signature

  Sign