SMA SC 500CP-US - Manual (Page 22)

3 Product Description SMA America, LLC
22 SCCP-US-IA-US_en-41 Installation Manual
Sunny Central Inverter with Integrated AC Disconnect and External DC Disconnect
Figure 4: Principle of a grid-tie PV plant with an external DC Disconnect and a inverter with integrated AC Disconnect
Sunny Central Inverter with External AC Disconnect and External DC Disconnect
As an option, the AC circuit breaker can be mounted externally.
Figure 5: Principle of a grid-tie PV plant with a Sunny Central inverter and external AC / DC Disconnect Unit
Position Description
A PV array
B String Combiner Box
C Inverter with Integrated AC Disconnect
D DC Disconnect Unit
E External transformer
F Utility grid
Circuit breaker
The unit is provided with a UL listed circuit breaker on the output rated 1,600 A for branch circuit protection. If the
circuit breaker shall be located externally to secure the AC path, you have to use the same type of circuit breaker
(ABB Emax E2B-A with 42 kA rated short-circuit current, ABB Emax E2N-A with 65 kA rated short-circuit current or
ABB Emax E2H-A with 85 kA rated short-circuit current and 1,600 A continuous current rating each).
Position Description
A PV modules