Fronius Galvo - Notes Regarding DC Connection; General Information about Solar Modules; DC Terminals

13
EN
Notes regarding DC connection
General informa-
tion about solar
modules
In order to select suitable solar modules and get the most efficient use out of the inverter,
please note the following points:
- The open circuit voltage of the solar modules increases as the temperature decreases
(assuming constant irradiance). Open circuit voltage may not exceed the following val-
ues:
Fronius Galvo 1.5-1 ... 420 V
Fronius Galvo 2.0-1 ... 420 V
Fronius Galvo 2.5-1 ... 550 V
Fronius Galvo 3.0-1 ... 550 V
Fronius Galvo 3.1-1 ... 550 V
If the open circuit voltage exceeds the above mentioned values, the inverter may be
damaged, and all warranty rights will become null and void.
- Note the temperature coefficients in the solar module data sheet
- More exact data for sizing the solar array for the particular location can be obtained
using calculations tools such as the Fronius Solar.configurator (available at http://
www.fronius.com).
DC terminals
Max. cross-section of each DC cable:
16 mm²
Min. cross-section of each DC cable:
2.5 mm²
The DC cables can be connected to the DC
terminals without ferrules.
In the case of a DC cable with a cross-section of 16 mm², ferrules can either not be used
or only used to a limited extent depending on the type of ferrule and crimping.
NOTE! Before connecting solar modules, make sure that the voltage specified by
the manufacturer corresponds to the actual measured voltage.
Note the safety instructions and specifications of the solar module manufacturer
regarding solar module grounding.
min. 2,5 mm² - max. 26 mm²
min. 1,5 Nm - max. 1,8 Nm
DC= (-)
DC= (+)
+
+
+
-
-
-
D1
D2
D1
D1
D1
D3
NOTE! To ensure effective strain
relief of the solar module strings,
only use cables with identical
cross-sections.