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Three-station isolation switch and atmospheric pressure sealed permanent magnet circuit breaker cabinet

An isolation switch and three-station technology, which is applied to air switch parts, switchgear parts and other directions, can solve the problems of increasing insulation distance, increasing the external size of switch cabinets, and decreasing insulation performance, and achieves reasonable arrangement and avoidance. The effect of irreversible insulation failure

Pending Publication Date: 2019-04-30
安恒智能科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, in the actual use of medium-voltage or high-voltage ring network switchgear on the market, the two ends of the three-phase isolation fracture of the isolating switch are mostly fixed on two insulating shafts respectively. The insulation performance of the insulating shaft meets the phase-to-phase insulation requirements of the switch. The insulation performance of the insulating shaft can mostly meet the phase-to-phase insulation requirements of the switch, but once the insulation of the switch ages, the insulation performance decreases, and the phase-to-phase or relatively non-recoverable insulation failure due to high voltage breakdown will cause serious damage to personal safety and power supply safety. threaten
[0004] Therefore, in the actual use of medium-voltage or high-voltage switchgear in the industry, the operating shaft of some isolating switches is made of metal materials in consideration of mechanical strength, and in order to achieve the insulation strength between it and the live part, it is usually realized by increasing the volume of the switch, but Increase the insulation distance by increasing the volume of the switch. Although the insulation strength can be increased, it will also increase the overall size of the switch cabinet, thereby increasing the production cost and land cost of the switch cabinet.

Method used

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  • Three-station isolation switch and atmospheric pressure sealed permanent magnet circuit breaker cabinet
  • Three-station isolation switch and atmospheric pressure sealed permanent magnet circuit breaker cabinet
  • Three-station isolation switch and atmospheric pressure sealed permanent magnet circuit breaker cabinet

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Embodiment Construction

[0027] Such as figure 1 As shown, the present invention discloses an airtight permanent magnet circuit breaker cabinet at atmospheric pressure, which is used in power transmission and distribution power equipment, where loads of different natures are switched and frequently operated, and can be used in industrial mines, enterprises, power plants and substations For the protection and control of electrical facilities, it can quickly and reliably eliminate the instantaneous faults and permanent faults of the main line or branch lines before the action of the outgoing line switch in the substation, and quickly reclose to restore power after the fault is eliminated. At the same time, it can be installed on the ring network line , Radiative lines, branch lines and user terminal lines.

[0028]The atmospheric pressure airtight permanent magnet circuit breaker cabinet includes a cabinet body 1, a permanent magnet circuit breaker 2 arranged in the cabinet body 1, a closing knob (unnum...

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Abstract

The invention provides a three-station isolation switch which comprises a switch moving contact knife switch device and a static contact knife switch device. The static contact knife switch device hasan isolated static contact knife switch and a grounded static contact knife switch which are disposed apart from each other. The switch moving contact knife switch device comprises a moving matchingmember, a transmission mechanism and an isolating moving contact knife switch, the switch moving contact knife switch device is selectively in contact with the isolated static contact knife switch andthe grounded static contact knife switch, one end of the transmission mechanism is connected to the moving matching member, the other end is connected to the isolated static contact knife switch, themoving matching member drives the transmission of the transmission mechanism, and therefore, the isolating moving contact knife switch is pulled to rotate. The three-station isolation switch has theadvantages that the three-station isolation switch has three independent isolation switches, an unrecoverable insulating failure caused by high-voltage breakdown between phases is avoided, therefore,the problem of safety hazard due to insulation aging is prevented, at the same time, the three-station isolation switch is arranged reasonably such that the whole body does not occupy extra space.

Description

technical field [0001] The invention relates to the field of electric power technology, in particular to a three-position isolating switch and an airtight permanent magnet circuit breaker cabinet at normal pressure. Background technique [0002] As people's awareness of environmental protection increases, the application of environmentally friendly gas-insulated and even air-insulated switchgear in power transmission and distribution equipment is becoming more and more common, and the corresponding air-insulated disconnectors have relatively high insulation requirements. The fracture, phase-to-phase and ground-to-ground power frequency withstand voltages should meet the experimental requirements of the corresponding voltage levels in an air-insulated environment at normal pressure. [0003] At present, in the actual use of medium-voltage or high-voltage ring network switchgear on the market, the two ends of the three-phase isolation fracture of the isolating switch are mostl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H31/10H02B11/04
CPCH02B11/04H01H31/10
Inventor 孙广慧唐财
Owner 安恒智能科技有限公司
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