Horizontal on-load capacity-regulating tap switch

Abstract

The invention discloses a horizontal on-load capacity-regulating tap switch which comprises a shell, a vacuum arc extinguishing assembly, a double-station switching assembly, a low-voltage contact assembly and a wiring assembly, the vacuum arc extinguishing assembly, the double-station switching assembly, the low-voltage contact assembly and the wiring assembly are fixed in the shell, the shell comprises an insulating substrate, and the wiring assembly is provided with a plurality of first wiring pieces. The wiring assembly is provided with a plurality of first wiring pieces, the first wiring pieces are in lap joint with taps on the high-voltage side of the transformer, the wiring assembly is further provided with a plurality of second wiring pieces, the second wiring pieces are in lap joint with taps on the low-voltage side of the transformer, and the double-station switching assembly comprises a movable contact set and a static contact set. The vacuum arc extinguishing assembly can disconnect the electric connection with the movable contact group and the static contact group under the linear driving of the first driving assembly and carry out vacuum arc extinguishing. According to the invention, transformer oil is not polluted in the capacity exchange process, the service life of the moving contact group is prolonged, the layout is compact, the size is small, and the switch cost and the transformer cost can be effectively reduced.

Description

technical field [0001] The invention relates to the technical field of electric equipment, in particular to a horizontal on-load capacity regulating tap changer. Background technique [0002] At present, there are few horizontal on-load capacity-regulating tap-changers in the market. The traditional cylindrical on-load capacity-regulating tap-changer device is installed on the side of the transformer, and its volume is relatively large, which greatly increases the volume and capacity of the transformer. Cost, and the internal wiring is complicated, the assembly is difficult, and it is very inconvenient to use. The new horizontal on-load capacity regulating tap-changer device that has appeared on the market in the past one or two years adopts the traditional mechanical tapping structure for closing and disconnecting the high-voltage side dynamic and static contacts inside the switch. During the capacitance process, the high-voltage side contacts of the switch will generate a...

AI Technical Summary

Problems solved by technology

[0002] At present, there are few horizontal on-load capacity-regulating tap-changers in the market. The traditional cylindrical on-load capacity-regulating tap-changer device is installed on the side of the transformer, and its volume is relatively large, which greatly increases the volume and capacity of the transformer. Cost, and the internal wiring is complicated, assembly is difficult, and it is very inconvenient to use

The new horizontal on-load capacity regulating tap-changer device that has appeared on the market in the past one or two years adopts the traditional mechanical tapping structure for closing and disconnecting the high-voltage side dynamic and static contacts inside the switch. During the capacitance process, the high-voltage side contacts of the switch will generate arcs during the closing and opening process, which will seriously affect the life of the contacts and pollute the insulating oil inside the switch, reducing the insulation performance of the switch, which is not good for the life of the switch. The complex problem of wiring can not be solved

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