Apparatus with abnormality determination function and method for determining abnormality

摘要

The apparatus 100 is provided with an abnormality determination means 32 for determining abnormality of the apparatus 100 where two different combinations of two electrodes are selected from the three electrodes 22a, 22b, and 22c, an alternating-current voltage is applied to an electrode in one combination by the voltage-applying portion 31 to measure a value of a current flowing to the other electrode via the dielectric body 21a by electrostatic coupling, an alternating-current voltage is applied to an electrode in another combination out of the at least two different combinations by the voltage-applying portion 31 to measure a value of a current flowing to the other electrode via the dielectric body 21a by electrostatic coupling, and an abnormality of the apparatus 100 is determined from the current values measured.