SMA SC 500HE-US Installation - Manual (Page 55)

SMA America, LLC 8 Electrical Connection
Installation Manual SC500HEUS-IA-US_en-14 55
8.3 Connection Area for AC, DC cables and ground
The cables of the PV modules and the external transformer / switch gear are connected in the
Interface area.
Sunny Central for the Connection of 9 DC Strings with busbars (Standard)
Position Description
A DC − connection (neg. grounding), DC+ connection (pos. grounding)
B DC+ connection (neg. grounding), DC − connection (pos. grounding)
C AC connection
D Ground connection