SMA TCS 500-SC - Manual (Page 29)

SMA Solar Technology AG 8 Commissioning
Installation Manual TCS-IT-IEN103610 29
8.5 Connecting the Internal Power Supply for the Inverter
1. Close the "Voltage supply SC 1" miniature circuit-
breaker for the first inverter.
2. If two inverters are used, in addition switch on "Voltage supply SC 2".