Installation Procedures; Step 1 - Verify That The Grid Voltage Matches The Microinverter Rating; Step 2 - Y3 Ac Bus Cable Distribution; Step 3 - Attaching The Apsystems Microinverters To The Racking - APsystems DS3 Series User Manual

4. APsystems Microinverter System Installation

4.3 Installation Procedures

4.3.1 Step 1 - Verify that the grid voltage matches the 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 connected to the power grid.
b. Wire the conductors of the AC bus as follows: L - BROWN ; N - BLUE；PE - YELLOW GREEN.
Wiring color codes may vary according to local regulations. Before connecting to the AC bus, ensure that all
wires of the installation match. Incorrect cabling can irreparably damage the microinverters, and such
damage is not covered by the warranty.
Do NOT carry the microinverter by the AC cable. This could lead to partial or complete disconnection of the
AC cable from the unit, resulting in no operation or poor operation.

4.3.3 Step 3 - Attaching the APsystems Microinverters to the Racking

a. Mark the location of each microinverter on the rack relative to the PV module junction box or any other
obstructions.
b. Install one microinverter at each of these marked locations using the hardware recommended by your
module racking vendor.
Install the microinverters (including DC and AC connectors) beneath the PV modules to protect them from
direct exposure to rain, UV, or other adverse weather conditions.
Leave a minimum of 1.5 cm (3/4 inch) space below and above the microinverter casing to allow proper
airflow. The racking must be grounded in accordance with local electrical codes.
APsystems DS3 series User manual
9