| 摘要 |
The present invention relates to a device for detecting an abnormal state of an AC motor and a distribution panel including the same. The device for detecting an abnormal state of the AC motor according to an embodiment of the present invention includes a voltage phase delay setting unit (130) which is connected to a voltage input terminal of the AC motor, a voltage phase converting unit (100) which includes a first comparator (IC1), a current phase detecting unit (210) which detects the phase of a current flowing in a load as a square wave, a current phase converting unit (200) which includes a second comparator (IC2), a sawtooth wave generating unit (400), a phase difference detecting unit (500) including a fourth comparator (IC4), a noise filter unit (520) which includes a ripple counter (IC5), and an abnormal signal outputting unit (600) which outputs an abnormal signal. |
