A quick closing high voltage isolating switch

Abstract

The invention discloses a fast-closing high-voltage isolating switch, which includes an operating mechanism and an isolating unit. The isolating switch is composed of two upper and lower insulating cavities and forms a sealed air chamber with a base, which can effectively avoid the aging problem of the isolating switch exposed to the atmosphere; At the same time, the main circuit transmission part is composed of internal main circuit connection, guide transmission, connecting rod, crank arm and other connections. The operating mechanism can close and close the small load current within the design range. The transmission principle of the operating mechanism adopts energy storage through springs. After a certain position is satisfied, the energy is automatically triggered to release the energy to realize the switch opening and closing operation. The closing speed and closing and opening positions are not subject to the operator's control. influences. At the same time, there is a visual state position indicator, which can clearly observe the opening and closing state. The isolating switch mechanism of the present invention is provided with an interlocking device with the main switch, which can meet the requirements of "five preventions" to prevent the isolating switch from being opened and closed under load. The isolating switch of the invention can be used as a single-phase isolating switch, or can be combined into a three-phase isolating switch through a special synchronous shaft.

Description

technical field [0001] The invention relates to high-voltage intelligent power distribution technology, in particular to a fast-closing high-voltage isolating switch. Background technique [0002] Today's power system is continuously strengthening the construction of intelligent distribution network to comprehensively improve the reliability and power supply quality of urban distribution network. The outdoor pole-mounted switch is an important part of the overhead transmission line of the distribution network, which undertakes many functions such as electric energy control, protection, distribution, and maintenance safety; the exposed conductor in the overhead transmission line is the main factor that causes instantaneous faults such as single-phase ground faults. At present, the newly constructed overhead line cables are all insulated cables (the outer layer of the conductor is an insulating layer), and most of the connecting parts of the overhead line and the switch are co...

AI Technical Summary

Problems solved by technology

[0011] Purpose of the invention: Aiming at the above problems, the present invention proposes a fast-closing high-voltage isolating switch, which can effectively solve problems such as the aging of the core isolating fracture and the influence of operating force on the main switch, improve the reliability of the pillar-type isolating switch, and improve the reliability of interlocking simplifies the assembly process and improves the efficiency of production and assembly

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