Smart line modules are non-regulated, line commutated feed/feedback units (diode bridge for incoming supply; line commutated feedback via IGBTs) with 100% continuous regenerative feedback power. The regenerative feedback capability of the modules can be deactivated by means of a digital input (smart line modules 5 kW and 10 kW) or by means of parameterization (smart line modules 16 kW, 36 kW and 55 kW). Smart line modules are designed for connection to grounded TN/TT and non-grounded IT systems.