SMA STP 50-40 Operating Manual page 32

5 Mounting
Structural Stability:
☐ When mounting with feet or profile rails, the width of one foot or the profile rail must be at
least 175 mm to ensure structural stability.
☐ The inverter must be attached under the following conditions:
– Inclination of the support surface: < 3°
– Wind speed (without wind gusts): < 25 m/s
– Height of the feet or the profile rail: > 100 mm
☐ When mounting with profile rails, an attachment or fixation by loading is required. When
mounting with profile rails, SMA Solar Technology AG recommends to bolt the profile rails
e.g. to the profile of the module frame or to attach a sheet metal (which can be weighted with
stones or with sandbags) at the profile rails. This will ensure that the inverter is fixed.
Figure 8: Attachment of the inverters (examples)
Recommended clearances:
If you maintain the recommended clearances, adequate heat dissipation will be ensured. Thus, you
will prevent power reduction due to excessive temperature.
☐ Maintain the recommended clearances to roof edges, skylights, walls as well as to other
inverters or objects. This ensures that the DC load-break switch on the inverter can be operated
easily and the LED signals can be read without difficulty.
☐ For possible service deployments, SMA Solar Technology AG recommends ensuring sufficient
clearance from walls, other inverters or objects on all four sides of the inverter enclosure. Non-
fulfillment of these criteria may restrict servicing.
☐ If multiple products are mounted in areas with high ambient temperatures, increase the
clearances between the products and ensure sufficient fresh-air supply.
Recommended clearances when using the universal assembly system
(UMS_KIT-10)
When using the universal assembly system (UMS_KIT-10), it is possible to deviate from the
recommended clearances.
32 STP50-4x-BE-en-23
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SMA Solar Technology AG
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Operating manual