9
Installing the PE Cable
4.2
•
It is recommended that the PE cable 
be connected to a nearby PE point. 
Connect the PE points of all 
SUN2000s in the same PV array to 
ensure equipotential connections to 
PE cables.
•
To enhance the corrosion resistance 
of a ground terminal, you are advised 
to apply silica gel or paint on it after 
connecting the PE cable.
Opening the Maintenance Compartment Door
4.3
•
Do not open the host panel of the SUN2000.
•
Before opening the SUN2000 maintenance compartment door, turn off the downstream AC 
output switch and three DC switches at the bottom.
•
Do not open the maintenance compartment door in rainy or snowy days. If you must, take 
protective measures to prevent rain or snow from entering the maintenance compartment.
•
Do not leave unused screws in the maintenance compartment.
1. Loosen the screws on the maintenance 
compartment door.
2. Open the maintenance compartment door 
and adjust the support bar.