DIAGNOSTIC METHOD OF SWITCHGEAR AND DEVICE THEREOF

Provided are a diagnostic method and a diagnostic device for an opening/closing device, which are capable of accurately ascertaining a normal state with a simple configuration. The present invention is characterized in that a signal of an acceleration sensor attached to an opening/closing device and a load current flowing through the opening/closing device are obtained, and in a pre-preparation stage of diagnosis of the opening/closing device, a frequency to be concerned is determined on the basis of a result obtained by spectral analysis of the signal of the acceleration sensor. Learning datausing at least the frequency and the load current as characteristic quantities is created, and during diagnosis of the switching device, the normal state of the switching device is diagnosed on the basis of the characteristic quantities obtained during diagnosis and the learning data. 提供一种开闭装置的诊断方法以及装置，能够用简便的结构高精度地掌握平时的状态。特征在于，得到安装于开闭装置的加速度传感器的信号和在开闭装置中流过的负载电流，在开闭装置的诊断的事先准备阶段中，根据对加速度传感器的信号进行波谱分析得到的结果来决定应关注的频率，制作至少将频率和负载电