Four-stage phase-change switch and power construction method

Abstract

The invention discloses a four-stage phase-change switch and a power construction method, and the four-stage phase-change switch comprises a housing, wherein one side of the housing is provided with an N-phase access end, an A-phase access end, a B-phase access end and a C-phase access end, and the other side of the housing is provided with a zero line leading-out end and a live line leading-out end; arc extinguishers A-C, fusion tubes A-C, contactors A-C, a protector and a locking device are installed in the housing. The N-phase access end is connected with the zero line leading-out end through a zero line. According to the invention, the switch is low in cost, safe, convenient and fast in phase change and capable of saving phase change time.

Description

technical field [0001] The invention relates to the field of switchgear, in particular to a four-stage commutation switch and a power construction method. Background technique [0002] In the prior art, in the process of electric power construction, phase commutation is often required, and the existing phase commutation switch is unreasonably designed, resulting in a long phase commutation time, which affects the efficiency of construction. Contents of the invention [0003] Through the investigation of the current situation, it is found that in order to make a breakthrough in the construction time of commutation, further improve work efficiency, reduce line loss rate, compress commutation time, and quickly and dynamically adjust the load of each phase, it is necessary to find a safe, sensitive and fast the reversing switch. [0004] There are many intelligent commutation switches on the market, but the purchase price of such equipment is high, and the maintenance cost is...

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