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4.Installation Preparation
4.1 Position and Space Required
Please install the microinverter and all DC connections under the PV module to avoid direct sunlight,
rain exposure, snow buildup, UV etc. The silver side of the microinverter should be up and facing the
PV moduleLeave a minimum of 2 cm of front side the microinverter enclosure to ensure ventilation
and heat dissipation.
4.2 How to Connect PV Modules to Microinverter
General Guidelines:
1. PV modules should be connected to DC input ports of a microinverter.
2. Use DC cable . Please consult the local power opera-tor to make sure that the DC cable complies
with local regulations.
The Austa microinverter system is designed to connnect max four PV modules.
AU-1P300/350/4002G can connect one PV module. AU-1P600/8002G can connect two PV modules.
AU-1P1000/1600/20002G can connect four PV modules.
The inverter can support over matching 1.5 times, such as AU-1P6002G can connect max 900W PV
modules input.
The typical wiring method is shown below.
Note:
The voltage of modules (considering the effect of local temperature) must not exceed the maximum
input voltage of the microinverter. Otherwise, the microinverter maybe damaged.
(refer to theTechnical Data section to determine the absolute maximum input voltage).
4.3 AC Branch Circuit Capacity
The Austa AU-1P300/350/400/600/800/1000/1600/20002G can be paralleled using the paralleling
interface on the microinverter. The number of microinverters on the AC branch must not exceed the
limits. Do not exceed the maximum number of microinverters in the AC branch circuit, as indicated on
the unit rating label. For 12AWG trunk cables, each microinverter's AC branch circuit must come from
a dedicated branch circuit protected by a 20A maximum circuit breaker.
Note:
1. Microinverters can be connected to the same AC branch, as long as the total currentdoes not exceed
the ampacity specifed in local regulations.
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