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Connecting solar module strings to the inverter
General com-
To enable suitable PV modules to be chosen and to use the inverter as efficiently
ments regarding
as possible, it is important to bear the following points in mind:
PV modules
-
-
-
IMPORTANT!
Before connecting up the PV modules, check that the voltage for the PV mod-
ules specified by the manufacturer corresponds to the actual measured voltage.
Safety
Danger due to incorrect operation and incorrectly performed work.
This can result in serious injury and damage to property.
▶
▶
Danger due to grid voltage and DC voltage from solar modules that are exposed
to light.
This can result in serious injury and damage to property.
▶
▶
72
If insolation is constant and the temperature is falling, the open-circuit
voltage of the PV modules will increase. The open-circuit voltage must not
exceed the maximum permissible system voltage. If the open-circuit voltage
exceeds the specified values, the inverter will be destroyed and all warranty
claims will be forfeited.
The temperature coefficients on the data sheet of the PV modules must be
observed.
Exact values for sizing the PV modules can be obtained using suitable calcu-
lation tools, such as the
WARNING!
Commissioning as well as maintenance and service work in the power module
of the inverter must only be carried out by service personnel trained by
Fronius and only within the scope of the respective technical regulations.
Read the Installation and Operating Instructions before installing and com-
missioning the equipment.
WARNING!
Ensure that the AC and DC side of the inverter are de-energised before car-
rying out any connection, maintenance or service tasks.
Only an authorised electrical engineer is permitted to connect this equip-
ment to the public grid.
Fronius
Solar.creator.
IMPORTANT!
The PV modules connected to the in-
verter must comply with the IEC
61730 Class A standard.
IMPORTANT!
Solar module strings must not be
earthed.
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