APsystems DS3 Series Installation/User Manual
2
1.Important Safety Instructions
This manual contains important instructions to follow during installation and maintenance of
the APsystems Photovoltaic Grid-connected Inverter (Microinverter). To reduce the risk of
electrical shock and ensure the safe installation and operation of the APsystems Microinverter,
the following symbols appear throughout this document to indicate dangerous conditions
and important safety instructions Specifications subject to change without notice - please
ensure you are using the most recent update found at
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
Do NOT disconnect the PV module from the APsystems Microinverter without first
disconnecting the AC power.
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.
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 it fails, contact APsystems
Customer Support to obtain an RMA number and start the replacement process.
Damaging or opening the APsystems Microinverter will void the warranty.
Caution!
The external protective earthing conductor is connected to the inverter protective
earthing terminal through AC connector. When connecting, connect the AC connector
first to ensure the inverter earthing then do the DC connections. When disconnecting,
disconnect the AC by opening the branch circuit breaker first but maintain the protective
earthing conductor in the branch circuit breaker connect to the inverter ,then disconnect
the DC inputs.
Please install AC breakers on the AC side of the inverter.
CAUTION – Hot surfaces - To reduce the risk of burns - Do not touch. Risk of electric
shock-(a) both ac and dc voltage source are terminated inside this equipment. Each circuit
must be individually disconnected before servicing, and (b) When the photovoltaic array is
exposed to light, it supplies a dc voltage to this equipment. Warranty void if cover removed.
No user serviceable parts inside.Refer servicing to qualified service personnel. This inverter
has an integral ground-fault detector / interrupter (GFDI).This Utility-InteractiveInverter
contains active anti-islanding protection(IEEE1547) and is tested per FCC/IC.
