Weidmüller PV DC COMBINER BOX, Operating Instructions Manual

Page: 8 / 34

Device description
4000001903/00/04.2020 8
3.2 Enclosure
The enclosure of the PV DC COMBINER BOX is made
of Glass Fibre Reinforced Polyester (GFRP). The en-
closure provides IP65 and IK07 or higher in accordance
with IEC 62208. Each enclosure is equipped with hinged
door(s).
Figure 3.3 Enclosure
3.3 DC Switch
Figure 3.4 DC switch
The PV DC COMBINER BOX has a DC disconnection
switch by default. The DC voltage of the switch depends on
the voltage of the PV string. The switch disconnector mak -
ing and breaking capacity (according to the IEC 60947-3)
has been selected to assure that it can switch the circuit at
full load at the maximum operating temperature.
3.4 Surge protection device (SPD)
Figure 3.5 Surge protection device
The surge protection device has been selected corre-
sponding to the customers requirements and in accord-
ance with the standard for low-voltage surge protective
devices IEC 61643-32.
Special units for 1 kV or 1.5 kV are used to provide the
best performance in each specific system configuration.
3.5 Fuse holders
Figure 3.6 Fuse holders
The fuse holders provide the interconnection between the
string input cables and other elements inside the combiner
box. The fuse holders ensure that the fuses are placed in
the optimum position to perform their protection function.
Additionally, the type of fuse holders (IP 2X) enable the au-
thorised personnel to operate the fuses in a safe manner.
These products allow multiple setups which helps to build
up specific tailor-made solutions of PV combiner boxes.