SMA SC 100LV-560HE - Manual (Page 56)

Electrical Connection SMA Solar Technology AG
56 SC125_560HE-IEN083220 Installation Guide
5.2.5 AC control voltage
The energy required for driving the Sunny Central is provided by an external control voltage supply
source. As standard, The form of grid connection of the control voltage supply source is TN-S grid.
The connection in the Sunny Central inverters of the type 100LV, 125LV, 150, 200 and 200HE is
single-phase. For all other Sunny Centrals it is three phase. The connection is made via a separate
cable.
As an option, the power required for driving the internal circuits of the Sunny Central 230 / 400 V
(except HE version) can be taken internally from the grid-feed-in line of the inverter. This reduces the
feed-in energy yields by the amount of power required by the inverter itself (fans, heating etc.). To
realize this, the connection terminals of the AC control voltage have to be bridged according to the
circuit diagram.
Connection terminal for control voltage in the Sunny Central 150
WARNING!
Risk of death due to burns and electric shock when live parts are touched!
• Only work on this device when it is switched off and under voltage-free conditions.
Realization of the external control voltage
When connecting the external control voltage, it is obligatory to follow the circuit diagram
included in the delivery.
L2 L3 L1
L2 L3 L1
N
N
L1 L2 L3
L1 L2 L3
PE
PE
L+ L-
L+ L-