| 摘要 |
As a noise-reducing shielded cable according to the present invention, provided is a shielded cable having an inverter (10), a motor (30), a cable (20) connecting the inverter and the motor with each other, a shield layer (40) covering the cable, and two ground wires (50) grounding both ends of the shield layer. |
| 主权项 |
1. A noise-reducing shielded cable comprising a cable that connects an inverter and a motor with each other, a shield layer covering the cable, a first ground wire that grounds one of both ends of the shield layer, and a second ground wire that grounds the other of the both ends of the shield layer,
wherein a capacitor of capacitance Ca1 and an inductor of inductance La1 are provided on the first ground wire, wherein a capacitor of capacitance Ca2 and an inductor of inductance La2 are provided on the second ground wire, and wherein, with capacitance between a core wire of the cable and the shield layer being C0 and a fundamental frequency of a surge voltage to be suppressed being f1, Expression (1) is satisfied,
f1=1/[2π×(L×C)1/2] Expression (1)wherein L=La1 and C=C0×Ca1/(C0+Ca1) or L=La2 and C=C0×Ca2/(C0+Ca2). |
