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4.2.2 Operating conditions at the site
■ Ambient temperature range for maximum power:
– SM2000S: -20 °C to +55 °C
– SM3000S, SM4200S and SM6000S: -20 °C to +45 °C
■ Relative humidity of the site: 0 to 98 % (no condensation)
■ The installation location must meet the requirements related to electromagnetic emis-
sions (EN 61000-6-4).
4.3 Cooling system
Notwithstanding the high ef ciency of the SolarMax inverter, approx. 5 % of the power
has to be dissipated in the form of heat. To this end the base of the device is made from
cast aluminium, which ensures adequate cooling via convection and an additional fan.
For safety reasons the temperature of the heat sink is limited to 80 °C. At ambient tem-
peratures of more than 45 °C the heat sink temperature may reach 75 °C. In this event
the maximum inverter output is reduced temporarily. But if the temperature still runs as
high as 80 °C the device is shut down to prevent a thermal overload.
4.4 Lightning protection
The requirements for appropriate lightning protection for a PV power plant depend on
many different factors (plant size, how the cables are run, the modules used, the sur-
roundings, etc.).
A project-speci c protection concept must be developed by a quali ed person. Informa-
tion on the built-in over-voltage is contained in section 4.7.3.
4.5 Scope of delivery
Make sure the delivery is complete. If the delivery is incomplete please contact Sputnik
Engineering.
■ SolarMax inverters
■ Instruction manual and installation primer for an installation
■ Mounting rail and Hardware
– 2 screws 6 x 50 mm
– 2 washers ø 18 mm
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