Inverter unit grounding method and inverter unit

摘要

A circuit system that includes a sensor circuit (2) for a sensor (3) that detects the state of a motor is provided in an inverter unit (1) for driving the motor. A 0V of the circuit system is connected with a shield braid (5) of a shielded cable (4) that connects the sensor circuit (2) and the sensor (3). Further, the shield braid (5) of the shielded cable (4) is connected to an earth plate (7).