ABNORMALITY DETERMINATION DEVICE, CONDUCTIVE PARTICLE DETECTING DEVICE, AND ABNORMALITY DETERMINATION METHOD

An abnormality determination device of the disclosure includes: an acquisition unit (601) acquiring an electrical resistance value between electrodes in a non-conductive lubricant used for lubrication of a mechanical device, the electrodes being spaced apart from each other in the lubricant; an abnormality determining unit (602) determining whether there is an abnormality in the mechanical device based on a number of times the resistance value acquired by the acquisition unit falls below a threshold; and an output unit (603) outputting a result of the determination by the abnormality determining unit. The acquiring unit acquires the electrical resistance between the electrodes that varies depending on conductive particles collected by magnetic force in the lubricant.