Output Reactor for Motor Drive Lines
The Siemens SIDAC 4EU2752-0EM00-0A is a 3-phase AC output reactor rated for a maximum continuous current of 129 A at a switching frequency of 6 400 Hz, with an inductance of 0.0001 H. It is designed to be placed between a variable-frequency drive and the motor to limit the rate of voltage rise (dV/dt) and reduce motor bearing currents and reflected-wave overvoltages on long cable runs. The reactor carries a thermal class H rating per IEC 60085, meaning its insulation system withstands a continuous temperature of 180 °C, which is appropriate for high-duty-cycle applications where the reactor sees sustained current near its 129 A rating. Total power loss at rated load is 269 W (171 W coil loss plus 98 W iron loss), which must be accounted for in the enclosure ventilation design — the reactor is rated for a 40 °C ambient and is IP00 (open frame), so it requires installation inside a panel or cabinet with adequate airflow.
The reactor measures 0.27 m wide by 0.24 m tall by 0.18 m deep, and terminates via flat-type connectors on the main current circuit.