SMA SC 500CP-US - Manual (Page 33)

SMA America, LLC 6 Preparation for Installation
Installation Manual SCCP-US-IA-US_en-41 33
6.2 Requirements for the Mounting Location
This section describes which requirements must be met at the mounting location of the inverter. The conditions specified
here apply equally for each installation option. Observe this section and make sure that the requirements are met prior
to preparing the mounting location for the inverter.
6.2.1 Ambient Conditions
The following ambient conditions must be maintained under all circumstances to ensure the optimum and safe operation
of the inverter.
☐ The mounting location must be freely accessible at all times.
☐ The ambient temperature must be within the operating temperature range.
☐ For further information on the ambient conditions, (see Section 17 "Technical Data", page 98).
For further information on the installation, see "Installation requirements for Sunny Central CP-US", which can be
downloaded in the download area at www.SMA-America.com or www.SMA-Solar.com.
6.2.2 Supply Air and Exhaust Air
The innovative OptiCool cooling concept makes it possible to operate inverters at full nominal power at ambient
temperatures of up to +122°F (+50°C).
At temperatures exceeding +122 °F (+50 °C), the inverter continues feeding in but reduces feed-in power to protect the
PV system.
The cooling air is drawn in through the inverter roof and is blown out
again through the slits at the rear of the inverter.
The illustration on the right shows the principle of the air circulation within
the inverter.
The inverter needs 1766 SCFM (3,000 m
3
/h) of fresh air, which the
inverter draws in through the ventilation grids in the front. The fresh air
must meet the 4S2 classification.
You can install the inverter in a chemically active environment. The
inverter is protected against salt spray in accordance with
EN 60721-3-4 class 4C2. You will find the required air qualities in the
following table.
/05*$&
Damage to the inverter due to dust or moisture penetration
Dust intrusion or moisture penetration can damage the inverter or impair the functionality of the inverter.
• Do not open the inverter during rainfall or humidity of more than 95%.
• Only open the inverter when the environment is dry and free of dust.
• Only use rainproof, wet-room suitable conduits that comply with UL 514B for the connection to the switch cabinet.