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At present, the temperature monitoring of contact terminal is not integrated into the available intelligent manipulation device for high-voltage switchboard. To develop a high-voltage switchgear comprehensive system of on-line monitoring and fault diagnosis which can measure the contactor temperature rise is very important to guarantee the normal operation of the high-voltage switchgear. Design on...
A low-cost diagnostic method for the single-phase inverter is proposed in this paper. A low-cost fabricated loop magnetic filed probe is used to detect the magnetic field near the output inductor of the inverter; the measured waveform is utilized as the diagnostic criterion, and is processed by the simple peak detector and comparators. With the proposed circuit, the open-circuit faults of the inverter...
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