Special grounding wire device for low voltage operation
A technology of ground wire and short-circuit ground wire, which is applied in the direction of coupling devices, connections, contact parts, etc., can solve the problems of inability to effectively realize power supply grounding and short circuit, personnel safety cannot be guaranteed, and the connection contact surface is uneven, so as to achieve high reliability , good application prospects, wide range of effects
Active Publication Date: 2016-02-17
STATE GRID CORP OF CHINA +2
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Problems solved by technology
Therefore, the grounding wire designed based on this structure is greatly affected by the structure of the connecting conductor, especially for low-voltage electrical equipment, which has small conductors, compact structure between busbars, and narrow installation space, which may easily cause uneven connection contact surface and insufficient effective cross-section. It is easy to fall off and other problems, so once the equipment suddenly receives power, it may not be able to effectively achieve the purpose of grounding and short-circuiting the power supply, and cannot guarantee the safety of personnel working on the equipment, resulting in personal accidents
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Embodiment 1
[0032] A special grounding wire device for low-voltage operation, including a short-circuit grounding wire 1, a grounding wire clip 2, a grounding wire copper terminal 3, a special insulating operating rod 4, and a nut-type grounding column 5:
[0033] The nut-type grounding column includes a connecting column 51 and a grounding head 52. The connecting column includes a sleeve 511 whose outer peripheral surface is an outer hexagon, and an internal thread is provided in the inner cavity of the sleeve. The inner cavity of the sleeve is connected to the The internal thread at the end where the bus bar or conductor bolts are connected is matched with the bolts on the bus bar or conductor, and the other end of the inner cavity of the sleeve is connected with the grounding head. The grounding head is a stepped shaft, and the stepped shaft The outer peripheral surface of the big end 521 is an external hexagon, and the small end 522 of the stepped shaft is provided with an external thr...
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The invention discloses a ground wire device special for low voltage work. The ground wire device comprises a short circuit ground wire, a ground wire clamp, a ground wire copper terminal, a special insulating operating bar, and nut ground posts. The special nut ground posts of different specifications can be applied in the ground wire device special for low voltage work and are connected with busbars or conductor bolts in low-voltage electrical equipment in a fastened manner; connecting is firm, contact section is even, effective section is large, and the reliability is high.
Description
technical field [0001] The invention relates to a tool for low-voltage operation, in particular to a special grounding wire device for low-voltage operation. Background technique [0002] At present, most 400V meter boxes, switch boxes, integrated distribution boxes, and transformer low-voltage side electrical equipment conductors are temporarily grounded and short-circuited using ordinary portable grounding wires. At present, most domestic manufacturers design and develop portable short-circuiting grounding wires, and the connection of the conductor end is common. Use pressure type clamps for clamping. Therefore, the grounding wire designed based on this structure is greatly affected by the structure of the connecting conductor, especially for low-voltage electrical equipment, which has small conductors, compact structure between busbars, and narrow installation space, which may easily cause uneven connection contact surface and insufficient effective cross-section. It is ...
Claims
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IPC IPC(8): H01R43/00H01R31/06H01R13/02H01R4/64
Inventor 王文祝黄文元蔡国阳蔡晓榆蔡春临陈坤洲
Owner STATE GRID CORP OF CHINA