APsystems DS3 Series - 4.4.1 Step 1 - Verify the grid voltage to match with microinverter rating; 4.4.2 Step 2 - The AC bus distribution; 4.4.3 Step 3 - Attach the APsystems Microinverters to the Racking

APsystems DS3 series Installation Manual
10
APsystems Microinverter System Installation
4.3.4 Step 4 - Ground the system
Y3 AC Bus cable has an embedded PE wire: this might be sufficient to ensure proper grounding of the whole
PV array. However in areas with special grounding requirements, external grounding work may still be
needed, using the grounding lug supplied with the Microinverter
Figure 3
4.3.5 Step 5 - Connect the APsystems microinverter to AC bus cable
Insert the microinverter AC connector into the Y3 AC trunk cable connector. Make sure to hear the “click” as a
proof of robust connection
Figure 4
Best Practice: Use the Bus Cable Unlock Tool of AC Bus to disconnect the connectors.
Figure 5
Please check the microinverter technical specifications (in Appendixes) to confirm the maximum number
of microinverters which can be connected on the same AC branch of the circuit.
Click
grounding lug