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Seven-gear off-circuit tap-changer achieving direct-reverse voltage regulating

A technology of tap changer and voltage regulating switch, which is applied in the direction of transformers, variable transformers, electrical component structure associations, etc., can solve the problems of limited use range and unsatisfactory, and achieve low production and use costs, convenient structure, and space occupation small effect

Active Publication Date: 2016-11-23
WUHAN TAIPU TRANSFORMER CHANGER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the positive and negative voltage regulation tap-changer can only realize five-speed voltage regulation, which cannot meet the needs of transformers that require more gears for positive and negative voltage regulation.
Therefore, its scope of use is limited

Method used

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  • Seven-gear off-circuit tap-changer achieving direct-reverse voltage regulating

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Embodiment Construction

[0019] An example of the present invention is figure 1 , 2 , 3, 4, and 5, it is a vertical three-phase non-excitation neutral point seven-speed forward and reverse voltage regulating tap-changer, which has a drum-shaped insulator 3 and an arc extinguishing cover 6 outside the insulator, so that the switch can be The inner electrified body is isolated from the outside world to further reduce the effective outer diameter of the switch. An upper support 2 and a lower support 14 are arranged above and below the insulator, and an insulating shaft 4 is arranged between the upper and lower supports. The upper end of the insulating shaft is connected to the The transmission shaft 1 mounted in the upper support is connected, and the upper end of the transmission shaft is connected with the switch operating structure 5. There are six layers of static contacts and moving contacts along the upper and lower sides of the switch, and each two layers corresponds to a phase. , the six layers ...

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Abstract

The invention relates to a seven-gear off-circuit tap-changer achieving direct-reverse voltage regulating. The seven-gear off-circuit tap-changer comprises an insulator, an upper support and a lower support, and an insulating shaft is arranged between the upper support and the lower support; each phase corresponding to the tap-changer is provided with two layers of fixed contacts and moving contacts, one of the two fixed contact layers in each phase is a main coil tap layer and is provided with four fixed contacts connected with a main coil tap k and seven fixed contacts connected with a voltage regulating coil tap, the other layer is a voltage regulating outputting layer and is provided with four x outputting fixed contacts and seven fixed contacts connected with the voltage regulating coil tap, and the insulating shaft is provided with moving contacts each of which is simultaneously connected with two adjacent fixed contacts. The seven-gear off-circuit tap-changer is simple in structure, easy and convenient to manufacture, reliable in working performance, low in manufacturing and using cost, suitable for being configured with transformers with various structures and capable of facilitating simplification of the transformer structures, has more direct-reverse voltage regulating gears and a good direct-reverse voltage regulating effect and can meet the requirements of the transformers needing more gears to conduct direct-reverse voltage regulating.

Description

technical field [0001] The invention relates to a positive and negative voltage regulating seven-speed non-excitation tap changer used in a transformer. Background technique [0002] In the Chinese patent CN101477884A, a non-excitation forward and reverse voltage regulating tap changer is disclosed. The tap changer adopts an annular moving contact structure, and each phase is provided with two layers of static contacts and moving contacts, and each layer is provided with seven The static contact can realize five-speed positive and negative pressure regulation, and has the advantages of reliable working performance and good positive and negative pressure regulation effect. However, the positive and negative voltage regulation tap changer can only realize five-speed voltage regulation, which cannot meet the needs of transformers that require more gears for positive and negative voltage regulation. Therefore, its scope of use is limited. Contents of the invention [0003] T...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F29/04H01F27/40H01H1/56
CPCH01F27/40H01F29/04H01H1/56
Inventor 秦伟刘卫星
Owner WUHAN TAIPU TRANSFORMER CHANGER
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