| 摘要 |
PROBLEM TO BE SOLVED: To obtain an inexpensive diagnosis apparatus for allowing anyone to easily and safely specify the degree of failure and deterioration in electric equipment, the causes, and the location during operation without stopping or pausing/decomposing the electric equipment in the diagnosis of the failure and deterioration of the electric equipment for an induction motor and an inverter. SOLUTION: The failure and deterioration of the electric equipment can be diagnosed according to numeric values obtained by calculating a harmonic content contained in the equipment current and at least the harmonic content of the unbalance rate in the equipment current by a signal-processing means for performing the input processing of output from a detection section by providing at least one detection section of a current detection section for measuring an equipment current flowing to the electric equipment and a magnetic field detection section for detecting magnetic flux that is generated in the equipment current, and an operation processing means for calculating a signal obtained by the signal processing means. |
