SMA SC 500CP-US-10 600V User Manual
Page 23
SMA America, LLC
3 Product Description
Operating Manual
SCCP-US-BE-US_en-52
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Sunny Central Inverter with Integrated AC Disconnect and external DC Disconnect
Figure 4: Principle of a grid-connected PV plant with an external DC Disconnect and a Sunny Central inverter with integrated AC Disconnect
Sunny Central Inverter with External AC Disconnect and External DC Switch
As an option, the AC circuit breaker can be mounted externally.
Figure 5: Principle of a grid-connected 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 array