Smart Line Modules are stall-protected, line-commutated infeed/regenerative feedback units (diode bridge for incoming supply; stall-protected, line-commutated regenerative feedback via IGBTs) with 100 % continuous regenerative feedback power.

The regenerative feedback capability of the modules can be deactivated via a digital input (Smart Line Modules 5 kW and 10 kW) or by parameter setting (Smart Line Modules 16 kW and 36 kW). Smart Line Modules are designed for connection to grounded, star (TN, TT) and non-grounded, symmetrical IT supply systems.

The DC link is pre-charged via integrated pre-charging resistors. The associated line reactor is absolutely essential for operating a Smart Line Module.