APsystems Microinverter DS3-S User Manual
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1. Important Safety Instructions
This manual contains important instructions to follow during installation and maintenance of
the APsystems Photovoltaic Grid-connected Microinverter. To reduce the risk of electrical
shock and ensure a safe installation and operation of the APsystems Microinverter, the
following symbols appear throughout this document to indicate dangerous conditions and
important safety instructions.
Specifications are subject to change without notice. Please ensure you are using the most
recent update found at https://emea.apsystems.com/resources/library/
This indicates a situation where failure to follow instructions may cause a serious
hardware failure or personnel danger if not applied appropriately. Use extreme caution
when performing this task.
This indicates information that is important for optimized microinverter operation.
Follow these instructions closely.
1.1 Safety Instructions
Only qualified professionals should install and/or replace APsystems Microinverters.
Perform all electrical installations in accordance with local electrical codes.
Before installing or using the APsystems Microinverter, please read all instructions and
cautionary markings in the technical documents and on the APsystems Microinverter
system and the solar array.
Do NOT disconnect the PV module from the APsystems Microinverter without first
disconnecting the AC power.
Be aware that the body of the APsystems Microinverter is the heat sink and can reach a
temperature of 80°C. To reduce risk of burns, do not touch the body of the Microinverter.
Do NOT attempt to repair the APsystems Microinverter. If the microinverter is suspected
to be faulty, please contact your local APsystems Technical Support to start
troubleshooting and obtain a RMA (Return Merchandise Authorization) number to start
the replacement process if needed. Damaging or opening the APsystems Microinverter
will void the warranty.
Caution!
When connecting a microinverter, it is recommended to first connect the AC Bus cable to
the ground then connect the AC connector to ensure proper earthing of the microinverter,
then do the DC connections. When disconnecting a microinverter disconnect the AC by
opening the branch circuit breaker first but maintain the protective earthing conductor in
the branch circuit breaker connected to the microinverter, then disconnect the DC inputs.
Please install AC breakers on the AC side of the inverter.
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