Secondary assembly of composite insulation dry-type current transformer

Abstract

The invention relates to the field of current transformers, and particularly relates to a secondary assembly of a composite insulation dry-type current transformer. The secondary assembly comprises asecondary coil, a secondary wiring board and a secondary wiring terminal, wherein the secondary wiring terminal is arranged on the secondary wiring board, the secondary coil is connected with the secondary wiring terminal on the secondary wiring board through a secondary lead, the secondary wiring terminal comprises a stud and a nut, the stud comprises an unthreaded shaft section in the middle andthreaded sections at the two ends, the unthreaded shaft section is provided with a terminal limiting block, and the secondary wiring board is provided with a limiting groove matched with the terminallimiting block. The secondary wiring terminal is provided with the terminal limiting block, and it is guaranteed that virtual connection of the secondary lead is avoided. In addition, the secondary wiring board is flexible and convenient to install.

Description

technical field [0001] The invention relates to the field of current transformers, in particular to a secondary component of a composite insulated dry-type current transformer. Background technique [0002] The secondary components in the composite insulated dry-type current transformer usually include secondary coils, secondary terminal boards, secondary terminal blocks, etc. Among them, the secondary terminal blocks in the prior art are such as image 3 As shown, copper bolts and nuts are generally used to connect, but in actual operation, it is found that due to factors such as nut mismatch and bolt corrosion, the bolts are not fixed in place, but rotate with the nuts, resulting in virtual connection of the secondary leads. The position of the secondary terminal board in the prior art is usually fixed, but during actual installation or maintenance, it is found that due to factors such as product model and processing size, the position of the secondary terminal board cannot...

AI Technical Summary

Problems solved by technology

[0002] The secondary components in the composite insulated dry-type current transformer usually include secondary coils, secondary terminal boards, secondary terminal blocks, etc. Among them, the secondary terminal blocks in the prior art are such as image 3 As shown, copper bolts and nuts are generally used to connect, but in actual operation, it is found that due to factors such as nut mismatch and bolt corrosion, the bolts are not fixed in place, but rotate with the nuts, resulting in virtual connection of the secondary leads. The position of the secondary terminal board in the prior art is usually fixed, but during actual installation or maintenance, it is found that due to factors such as product model and processing size, the position of the secondary terminal board cannot be adjusted, which often causes inconvenience in operation, such as the need for on-site re-drilling Mounting holes etc.

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