11
11.2019
INV315-50EU
Check the correct locking of the connector with the white arrow
pointing to the closed locking symbol.
8.2.1 AC connection of multiple units
The AC connection is located on the left side of the connection
area and is made via a cable with a 3-pin 16A plug.
Two inverters at a time can be connected to the entire circuit via
a distribution block.
Up to 9 inverters can be operated on one string (circuit), each
equipped with a 16A type B circuit breaker. The distribution
blocks are not included in the scope of delivery of the micro
inverter. (See Accessories Overview for ordering information).
Open AC connections must be closed with a protective cap
at the end of an AC circuit. This cap is also not included in the
scope of delivery of the micro inverter.
(See accessories overview for ordering information)
8.3 DC connection
Dangerous touch voltages can occur during the installation of
the photovoltaic system. To ensure your safety, please make sure
that the DC connection cables of the PV generator do not come
into contact with the earth potential.
- Risk of damage!
Make absolutely sure that the polarity of the
connections is correct!
- Check the PV generator for earth connection
before connecting it to the inverter.
•
Only use original mating plugs and sockets from the HELIOS
H4 product range from Amphenol.
•
Observe the Amphenol assembly instructions for the DC
connectors if you assemble the cables yourself.
Check that the PV generator is free of earth faults before
connecting it to the inverter.
Before connecting the DC cables to the inverter, check whether
the maximum PV module voltage is suitable for feeding into the
inverter. If the PV module voltage is too high, the unit will be
destroyed. Remember to increase the open-circuit voltage of the
solar field at low temperatures!
Before installing the PV modules, the inverters should be
completely installed and all wiring between the inverters should
be completed. If possible, mount the PV modules above the
respective inverter on the mounting frame. The connection
cables of the PV modules are connected to the inverter via
negatively and positively polarised PV plugs and sockets.
First determine the polarity of the PV module. Connect the
positive pole of the module outlet to the input marked „+“ on the
inverter. Connect the negative pole of the PV module output to
the input marked „-“ on the inverter.
This step is carried out for all remaining PV modules with the
inverter attached below, without exceeding the maximum
number of inverters in the AC circuit.
The exact handling of the DC connections is as follows: