5 Installation
SMA Solar Technology AG
14
MC-BOX-12-3-20-BE-en-10
Operating Manual
5 Installation
5.1 Storing the Multicluster Box
• Store the Multicluster Box in a dry place with an ambient temperature range between − 25°C and +60°C.
5.2 Requirements for Mounting
Mounting Location
A firm, even support surface, e.g., a concrete foundation, must be available for mounting.
The mounting location must be suitable for the weight and dimensions of the Multicluster Box (see Section 12
"Technical Data", page 40).
The mounting location must be clear and safely accessible at all times without the need for any auxiliary equipment.
The Multicluster Box must be mounted without hindrance of access to the disconnection devices.
All local requirements concerning minimum passage widths and escape routes must be observed.
Climatic conditions must be met (see Section 12 "Technical Data", page 40).
The mounting location must be below 3,000 m above MSL. If you wish to use the Multicluster Box at elevations
above 3,000 m, contact the SMA Service Line (see Section 14, page 46).
Minimum Clearances
Figure 5: Minimum clearances
There must be sufficient space at the mounting location to ensure compliance with the minimum clearances.
There must be a distance of at least 300 mm between the Multicluster Box and the Grid Connect Box or NA Box.
This will ensure adequate heat dissipation.
Optimum mounting location
The ambient temperature influences the tripping threshold of the circuit breakers for the Sunny Island inverters.
The higher the temperature, the earlier the circuit breakers will trip. At high ambient temperatures, the derating
function of the Sunny Island inverters inhibits premature tripping of the circuit breakers.
• To ensure optimum operation, mount and install the Multicluster Box and the Sunny Island inverters at the same
location.
200 mm
200 mm
SMA
200 mm
