ABNORMALITY DETECTING DEVICE AND MECHANICAL DEVICE

An abnormality detecting device (1) relating to the present invention includes at least two first cover parts (14) arranged next to each other in a circumferential direction; a plurality of electrode parts (5) respectively supported by the first cover parts (14); a plurality of magnet parts (4) provided inside of the first cover parts (14) in the radial direction, where each of the plurality of magnet parts (4) is in contact with a corresponding one of the plurality of electrode parts (5); and a second cover part (22) provided between adjacent ones of the first cover parts (14) in the circumferential direction. An inter-electrode creepage distance (Ed) between adjacent ones of the electrode parts (5) in the circumferential direction is less than an inter-magnet creepage distance (Md) between adjacent ones of the magnet parts (4) in the circumferential direction, where the inter-electrode creepage distance (Ed) is directed along outer peripheral surfaces (14c) of the first cover parts (14) and along an outer peripheral surface (22a) of the second cover part (22), and the inter-magnet creepage distance (Md) is directed along respective sides (14a) of the second cover part (22) in the circumferential direction and along the outer peripheral surface (22a) of the second cover part (22).