Routine Maintenance - Goodwe ET Series User Manual

User Manual V1.0-2022-08-30

9.5 Routine Maintenance

• Make sure that the inverter is powered off.
• Wear proper PPE before any operations.
Maintaining Item
System Clean
DC Switch
Electrical Connection
Sealing
THDi Test
WARNING
Maintaining Method
Check the heat sink, air intake, and air
outlet for foreign matter or dust.
Turn the DC switch on and off ten
consecutive times to make sure that it is
working properly.
Check whether the cables are securely
connected. Check whether the cables are
broken or whether there is any exposed
copper core.
Check whether all the terminals and ports
are properly sealed. Reseal the cable hole
if it is not sealed or too big.
For Australia requirements, in the THDi
test, there should add Zref between
inverter and mains.
L: 0.24 Ω + j0.15 Ω; N:0.16 Ω +j0.10 Ω
L: 0.15 Ω + j0.15 Ω ; N:0.1 Ω + j0.1 Ω
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09 Maintenance
Maintaining Period
Once 6-12 months
Once a year
Once 6-12 months
Once a year
As needed.