Connection mode of lead

Abstract

The invention discloses a connection mode of a lead. The connection mode of the lead comprises a support and an insulating hoop plate connected with the support through a fastener, the insulating hoopplate is of an arch structure of which the middle part is a plane and two ends are cambered surfaces, platelike wings are arranged at two ends of the insulating hoop plate of the arch structure, through holes for connecting the fastener are formed in the wings at two ends, and the insulating hoop plate is arranged on the outer side of a tapping lead in a sleeving mode and is connected with the support through the fastener. The lead can be preferably adhered to a cable by using the arched insulating hoop plate, so that the fixation of the tapping lead is firmer; the manufacturing technology ofthe platelike insulating hoop plate is simple, and the hidden danger that bubbles exist in an original blocky laminated paper board is avoided; the installation dimension is small, the distance between a phenolic aldehyde screw and an oil tank wall is greatly reduced, and the risk of electric discharge caused by too short distance between the screw and the tank wall is eliminated.

Description

technical field [0001] The invention relates to a clamp used in a transformer, in particular to a connection method for clamping a tap lead wire of a transformer. Background technique [0002] In the transformer structure, the traditional clamps for clamping high-voltage tap leads are generally made of block-shaped laminated cardboard, because the thickness of the laminated cardboard must be The diameter of the cable is larger than that of the tap lead, and then a groove is dug out at the position of the tap lead to buckle the tap lead, which is a waste of material, and the thicker laminated cardboard is slightly improper in the process of processing This will cause the fixture to form tiny air bubbles, which is a hidden danger of partial discharge; in addition, the block-shaped laminated cardboard itself is relatively thick, and it needs to be fixed with insulating bolts and nuts during installation, which also makes the tap lead The already limited space between the cable...

AI Technical Summary

Problems solved by technology

[0002] In the transformer structure, the traditional clamps for clamping high-voltage tap leads are generally made of block-shaped laminated cardboard, because the thickness of the laminated cardboard must be The diameter of the cable is larger than that of the tap lead, and then a groove is dug out at the position of the tap lead to buckle the tap lead, which is a waste of material, and the thicker laminated cardboard is slightly improper in the process of processing This will cause the fixture to form tiny air bubbles, which is a hidden danger of partial discharge; in addition, the block-shaped laminated cardboard itself is relatively thick, and it needs to be fixed with insulating bolts and nuts during installation, which also makes the tap lead The already limited space between the cable and the box wall is even more insufficient; and the two ends of the laminated cardboard of this structure are thicker, the elasticity is poor, and the thinner part in the middle is easy to crack, which affects the effect of fixing the tap lead.

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