An electric high voltage metering box

Abstract

The invention provides an electric high-voltage metering box, comprising: a box body, a mounting seat is provided on the top of the box body, and a mounting hole is provided on the mounting seat, and a conductive screw is inserted in the mounting hole; the conductive screw is provided with a plug inserted into the box Set the conductive section and the extended conductive section extending out of the box; the extended conductive section is covered with an insulating porcelain sleeve; the outer cover of the insulating porcelain sleeve is provided with a transparent sealing cover; the upper section of the extended conductive section is provided with an upper thread, The upper thread protrudes from the outside of the insulating porcelain sleeve and is fixed and installed by nuts; the connection end of the wire is between the nut and the insulating porcelain sleeve; a retaining ring is provided on the inserted conductive section; the inserted conductive section between the retaining ring and the mounting seat The upper sleeve is provided with a spring. Through the cooperation of the conductive screw and the limit base, the rotation of the screw during the installation process is effectively prevented, and the internal nut is prevented from loosening. The wiring can be conveniently adjusted through the lifting adjustment, and the upper nut is always in a tensioned state with the tension spring, which is not easy to loosen.

Description

technical field [0001] The invention relates to the field of electric high-voltage metering boxes, in particular to an electric high-voltage metering box. Background technique [0002] At present, outdoor high-voltage metering boxes are malfunctioning due to perennial sun and rain, lightning strikes, and human factors. The main manifestations are that the coil is burned, and the conductive screw connection at the primary and secondary terminals is loose, rusted, and oxidized. When the conductive screw of the high-voltage metering box is installed, the internal connecting nut is loosened due to improper operation. After the connecting nut is loosened, the electric shock resistance increases, causing a voltage difference between the primary incoming line and the outgoing line, resulting in insulation breakdown and measurement failure. allow. Contents of the invention [0003] In order to overcome the deficiencies in the prior art above, the present invention provides an ele...

AI Technical Summary

Problems solved by technology

[0002] At present, the outdoor high-voltage metering box is faulty due to sun and rain, lightning strikes, human factors and other reasons, mainly in the coil burnt, the conductive screw connection of the primary and secondary terminals is loose, rusted and oxidized

When the conductive screw of the high-voltage metering box is installed, the internal connecting nut is loosened due to improper operation. After the connecting nut is loosened, the electric shock resistance increases, causing a voltage difference between the primary incoming line and the outgoing line, resulting in insulation breakdown and measurement failure. allow

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