Connection cable i.e. motor connection cable, for connecting phases of electric motor with phase terminals of thyristor power converter utilized in drive system, has impedance element inserted between ground terminal and cable shield

摘要

The cable (24) has a cable shield (25) surrounding current drive-end connecting lines (16a, 16b), where length of the cable is greater than 200 m. The cable shield comprises a ground terminal (33) that is arranged at cable ends (30, 31). The ground terminal connects the cable shield with ground potential (E). An impedance element (32) i.e. ohmic resistor, is inserted between the ground terminal and the cable shield. Resistance of the ohmic resistor is increased based on characteristic impedance of the cable.