A low-voltage work grounding method

Abstract

The invention discloses a grounding method for low voltage work. The method includes: sleeving ground wire copper terminals at the multi-branch end of a short circuit ground wire by the small end of a ground head of a nut ground post; connecting a connecting post and the ground post to form a conductor end; connecting one ground wire clamp end of the short circuit ground wire to a device ground member; checking that a low-voltage device bears no voltage, and fastening the nut ground post to a bolt of one phase bus or conductor of the low-voltage device with a special insulating operating bar; sleeving a nut of the nut ground post with a socket of the special insulating operating bar, tightening the nut, and tightening the connecting post and ground head of the nut ground post. Special nut ground posts of different specifications can be connected with the bus bar or conductor bolt of the low-voltage electrical device in a fastened manner, connecting is firm, contact section is even, effective section is maximized, and reliability is high.

Description

technical field [0001] The invention relates to a low-voltage operation method, in particular to a low-voltage operation grounding method. 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 easy to fall off an...

AI Technical Summary

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

Images