Linked middle voltage switch with load, insulation, grounding electric function

A load and electrical technology, applied in the direction of electric switches, air switch components, electrical components, etc., can solve the problems of many consumables, many accident points, and large volume

Inactive Publication Date: 2009-03-04
冯保明 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, the electrical equipment used in the current power distribution and consumption circuits with the three electrical functions of load, isolation, and grounding has many defects: first, it is bulky, has many consumables, complicated manufacturing, and high input costs; secondly, the structure is complicated and accidents Many points, inconvenient to use, complicated mutual defense operation procedures, prone to human operation accidents

Method used

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  • Linked middle voltage switch with load, insulation, grounding electric function
  • Linked middle voltage switch with load, insulation, grounding electric function
  • Linked middle voltage switch with load, insulation, grounding electric function

Examples

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Embodiment Construction

[0013] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0014] Figure 1 to Figure 5 Shown is a medium voltage switch linked by three electrical functions of load, isolation and grounding, including the three-phase upper insulator 27 and the lower insulator 10 installed on the bottom frame 1, and a general operating mechanism 2 is installed in the middle of the bottom frame 1; The three-phase output crank arm 3 in the mechanism 2 is hinged with the three-phase load isolation knife switch 6 through the connecting rod 4 and pin 5; the opening and closing operation force that meets the opening and closing speed requirements of the load switch and the isolating switch is input in phase separation at the same time; The supporting end of the load isolation switch 6 is embedded with a large gear 7 , and the large gear 7 rotates coaxially with the load isolation switch 6 . The supporting end of the three-...

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PUM

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Abstract

The disclosed linkage middle-voltage switch for loading, isolating and grounding comprises: three phases of upper and lower insulator arranged on bottom frame, the frame fixing every phase of lower insulator also fixing a support member with two rotatable support rods supporting a loading-isolation blade brake and a grounding blade brake respectively; a large gear embedded on loading-isolation blade brake joggling with a small gear embedded on grounding blade brake; a main and assist contact base for loading-isolation fixed on every upper insulator, a general operation mechanism set on middle of bottom frame, the output bent arm of last mechanism hinged with three loading-isolation blade brakes through a coupler and pin, a contact-force spring and a vacuum arc-extinguishing bypass set on middle of the loading-isolation blade brake, a main and assist switchingin tension spring and a limit-position roller hanging on the switchinging bent arm fixed on main shaft of the general mechanism; a switchingin stop gear and three-phase ground contact base fixed on the bottom frame. This invention has compact structure and reliable performance.

Description

technical field [0001] The invention relates to the field of medium and low voltage switches, in particular to a medium voltage switch linked by three electrical functions of load, isolation and grounding. It can close, carry and break the load current, and can close and carry the corresponding short-circuit current for a short time. It can be installed in complete sets of equipment such as ring network cabinets and box-type substations to receive and distribute electric energy. It can be combined with a current-limiting fuse to form a "load switch-fuse combination appliance" to protect and control small and medium-capacity power transformers. Background technique [0002] At present, domestic and foreign power transmission and transformation equipment manufacturing industries have not yet designed and manufactured a switch that simultaneously has the three electrical functions of load, isolation, and grounding. In the needs of the power transmission and transformation ind...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01H9/20H01H9/26H01H31/04H01H31/10
Inventor 冯保明
Owner 冯保明
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