APsystems DS3-M - Installation Procedures; Step 1 - Verify that Grid Voltage Matches Microinverter Rating; Step 2 - Y3 AC Bus Cable Distribution; Step 3 - Attach the Apsystems Microinverters to the Racking

APsystems Microinverter DS3 series Installation manual
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4. APsystems Microinverter System Installation
4.3 Installation Procedures
4.3.1 Step 1 - Verify that grid voltage matches microinverter rating
4.3.2 Step 2 – Y3 AC Bus Cable distribution
a. One end of the AC bus cable is used to access the junction box into the power grid.
b. Wire the conductors of the AC bus: L - BROWN ; N - BLUE；PE - YELLOW GREEN.
Wiring color code can be different according to local regulations. Check all the wires of the installation
before connecting to the AC bus to be sure they match. Improper cabling can irreparably damage the
microinverters: such damage is not covered by the warranty.
Do NOT carry the microinverter by the AC cable. This may cause the AC cable to partially or fully disconnect
from the unit, resulting in no or poor operation.
4.3.3 Step 3 - Attach the APsystems Microinverters to the Racking
a. Mark the location of the microinverter on the rack, with respect to the PV module junction box or any
other obstructions.
b. Mount one microinverter at each of these locations using hardware recommended by your module
racking vendor.
Figure 2
Install the microinverters (including DC and AC connectors) under the PV modules to avoid direct
exposure to rain, UV or other harmful weather events. Allow a minimum of 1.5 cm (3/4’’) below and
above the casing of the microinverter to allow proper air flow. The racking must be properly grounded as
per local electrical code.
grounding washer
(Warning injure hand)