On-load tap-changer characteristic rapid test instrument with remote gear shifting function

Abstract

The invention discloses an on-load tap-changer characteristic rapid test instrument with a remote gear shifting function, and the instrument comprises a remote switching transformer on-load tap-changer device which comprises a housing, the housing is provided with two contact switches, the two contact switches are respectively an upshift contact switch and a downshift contact switch, and the housing is also provided with a common end; the input measurement circuit is composed of an input protection circuit and a measurement circuit; the measuring circuit comprises a pre-amplifier, a sampling holder, an A-phase measuring circuit, a B-phase measuring circuit and a C-phase measuring circuit; the A-phase measuring circuit, the B-phase measuring circuit and the C-phase measuring circuit are respectively connected with the pre-amplifier and the sampling holder in sequence; the power supply control module is connected with the voltage source and the current source and is used for providing specified power supply for the A-phase measuring circuit, the B-phase measuring circuit and the C-phase measuring circuit; the multi-path analog change-over switch is connected with the sampling holder; and the A / D converter realizes three-phase synchronous measurement. The human resource cost is reduced, and the working efficiency is improved.

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