6
Installation Manual
SMA Solar Technology AG
DC-CMB-IA-U15-xx-en
2 Safety
2.4 Position and securing
Failure to follow these instructions may have serious consequences, such as the destruction of the device, personal injury or
death due to electric shock. Therefore, the following safety instructions must be read and understood prior to installation and
use of the Combiner Box. For any clarifications or additional information, contact the SMA Solar Technology AG.
Symbol
Explanation
The enclosure is made of fibreglass with protection rating of IP54.
If positioning in a closed environment, make sure the area is ventilated and allows regular
recirculation of air. If installing in an open environment, position the enclosure in an area
that is constantly shaded and protected from exposure to direct sunlight. These measures are
important for preventing unnecessary and excessive overheating, which prolonged in time
impairs the duration and operation of parts inserted inside, since the enclosure supports the
correct dissipation of heat developed by the energy coming from the strings at a maximum
temperature of 50°C (60°C with derating of 1%/K of max current).
The symbol
indicates that the enclosure is constructed in such a way that it provides
protection against indirect contacts via complete insulation (EN 61439-2). For this purpose,
the electrical equipment must be correctly installed according to the instructions that
accompany the product and using the special accessories (screw cover caps, mounting
brackets).
Make sure the wall where the enclosure is to be mounted is suitable to support the weight.
The weight of these enclosure varies from 25 kg for the 16 string model to over 40 kg for
the model with 32 strings.
