Fronius Symo GEN24 3.0, Operating Instructions Manual, Page: 51 / 144

Connecting solar module strings to the inverter
General com-
ments regarding
solar modules To enable suitable solar modules to be chosen and to use the inverter as efficiently as
possible, it is important to bear the following points in mind:
-
If insolation is constant and the temperature is falling, the open circuit voltage of the
solar 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 solar modules must be ob-
served.
- Exact values for sizing the solar modules can be obtained using suitable calculation
tools, such as the
Fronius Solar.configurator .
IMPORTANT!
Before connecting up the solar modules, check that the voltage for the solar modules
specified by the manufacturer corresponds to the actual measured voltage.
IMPORTANT!
The solar modules connected to the invert-
er must comply with the IEC 61730 Class
A standard.
IMPORTANT!
Solar module strings must not be earthed.
Safety
WARNING!
Incorrect operation or poorly executed work can cause serious injury or damage.
Commissioning as well as maintenance and service work in the power module of the in-
verter 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 In-
structions before installing and commissioning the equipment.
WARNING!
An electric shock can be fatal.
Danger due to grid voltage and DC voltage from solar modules that are exposed to light.
▶
Ensure that the AC and DC side of the inverter are de-energised before carrying out
any connection/maintenance or service tasks.
▶
Only an authorised electrical engineer is permitted to connect this equipment to the
public grid.
51
EN