SMA SC 500HE-US Installation - Manual (Page 18)

3 The Sunny Central SMA America, LLC
18 SC500HEUS-IA-US_en-14 Installation Manual
3 The Sunny Central
In this section you will see how to identify the Sunny Central. A short description of the Sunny Central's
design and functions are given here.
3.1 System Overview
The Sunny Central is an inverter for indoor and outdoor. The enclosure is made of stainless steel and
aluminum which conforms to the NEMA 3R protection rating. NEMA 3R means that the Sunny Central
is protected against dust and water when it is closed. The Sunny Central is protected from salt fog
pariculars, it can be operated in chemically aggressive environments.
Operating Principles
The PV modules convert a portion of sunlight into electrical energy (direct current). The Sunny Central
then converts the direct current into alternating current and feeds it into the public grid. This current
can be used directly, or it can be sold to your energy provider.
3.2 The Design of the Sunny Central
Position Cabinet Description
A Power Cabinet The power cabinet contains the power unit for converting direct
current to alternating current.
B Control and
Interface
Cabinet All AC, DC and communication cables are connected in the control
and interface cabinet. The control and interface cabinet contains:
• system control
• Sunny Display
• stop/start switch
optional communication devices