Breaker type three-station shielding type solid isolating ring main unit

A three-position switch, solid insulation technology, applied in switchgear, switchgear settings, electrical components, etc., can solve the problem of excessive heating of the conductive circuit, deviation of the knife switch from the original position, affecting the contact between the knife switch and the contacts, etc. problems, to achieve the effect of improving the electrical performance of the product, reducing the lack of assembly, and improving the production efficiency

Inactive Publication Date: 2018-04-06
上海启腾电气股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, in the solid insulated ring network cabinets currently on the market, the isolating switch and the grounding switch are made into knife-type three-position switches. The pins need to be fixed on the conductors to fix the knife switch, and the soft connection at the moving conductive rod of the vacuum interrupter needs to be tightened by screws. Solid, because the protrusion of the pin shaft and the screw will cause the electric field to concentrate, thereby reducing the electrical performance of the product
The contact between the knife switch and the isolated static contact of the three-position switch is affected by the electromotive force, which will cause the knife switch to deviate from its original position for a long time, affecting the contact between the knife switch and the contact, the resistance becomes larger, and the heat of the conductive circuit exceeds the standard. have an accident

Method used

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  • Breaker type three-station shielding type solid isolating ring main unit
  • Breaker type three-station shielding type solid isolating ring main unit
  • Breaker type three-station shielding type solid isolating ring main unit

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Embodiment Construction

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0028] like figure 1 As shown, the present invention provides a knife-gate type three-position switch shielded solid insulated ring network cabinet, which includes a combined cabinet bus 1, a cabinet body 2, a switch unit 3, a cable outlet 4 and a current transformer 7; The busbar 1 can connect multiple groups of solid insulated ring network cabinets with cables, and the switch unit 3 and the current transformer 7 are installed on the cabinet body 2 .

[0029...

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Abstract

The invention discloses a knife-gate type three-position switch shielded solid insulated ring network cabinet, which includes a cabinet busbar, a cabinet body, a switch unit, a cable outlet and a current transformer, and the switch unit and the current transformer are installed on the cabinet. The switch unit includes a circuit breaker and a three-position switch. The circuit breaker includes an incoming cone conductor, a soft connection, a circuit breaker insulation pull rod, a vacuum interrupter, a conductor at the static end of the interrupter, and a circuit breaker mechanism. The position switch includes isolating static contacts, knife switch components, isolating contact seats, outlet cone conductors, three-position insulating pull rods, connecting rods, grounding contacts and isolation-grounding mechanisms, the inlet cone conductors, vacuum arc extinguishing The static end conductors of the chamber, the arc extinguishing chamber, and the outlet cone conductors are all poured into the shielded solid-sealed pole. In the invention, the knife switch assembly is integrated into the shielded solid-sealed pole, which reduces the problem of insufficient assembly due to small space, has high product reliability, and improves production efficiency.

Description

technical field [0001] The invention relates to the technical field of high-voltage switchgear equipment, in particular to a knife-gate type three-position switch shielding type solid insulation ring network cabinet. Background technique [0002] Ring network power supply is a commonly used power supply form in power distribution system, and ring network cabinet is the core component to realize safe power supply, generally divided into three types: air insulation, SF6 insulation and solid insulation. Due to the limitation of air insulation performance, air-insulated ring network cabinets are generally large in size and occupy a large area, and because high-voltage live parts are directly exposed to the air, product performance and reliability will be directly affected by the environment. SF6 is a gas with a strong greenhouse effect and is extremely difficult to decompose. SF6 gas pollutes the environment and is not environmentally friendly. It has high requirements for the s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02B1/30H02B13/035
CPCH02B1/30H02B13/0352H02B13/0354
Inventor 鲁晓东
Owner 上海启腾电气股份有限公司
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