Mutual inductor side position arrangement structure for miniaturized drawer cabinet

By adopting a side-positioned arrangement of current transformers in a miniaturized drawer cabinet, staggered distribution of three-phase outgoing busbars, and utilization of side operating holes, the problem of inconvenient installation of current transformers is solved, achieving miniaturization of the drawer cabinet and good heat dissipation performance.

CN223451414UActive Publication Date: 2025-10-17JIANGSU LUOKAI MECHANICAL & ELECTRICAL
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Patent Information

Application Number
CN202422902568.4
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-11-27
Publication Date
2025-10-17
Estimated Expiration
2034-11-27

AI Technical Summary

Technical Problem

The installation of current transformers in the drawer section of existing miniaturized low-voltage switchgear is inconvenient and makes it difficult to connect them efficiently in a limited space, which affects electrical performance and space utilization.

Method used

The system adopts a miniaturized drawer cabinet with a side-mounted arrangement of current transformers. By staggering the distribution of the three-phase outgoing busbars and current transformers, installation and maintenance are carried out using the operating holes on the side of the cabinet, thus optimizing space utilization and heat dissipation performance.

Benefits of technology

The miniaturized design of the drawer cabinet simplifies the installation and maintenance process of the current transformer, and improves the heat dissipation performance and space utilization of electrical equipment.

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Abstract

The utility model relates to a transformer side position arrangement structure for a miniaturized drawer cabinet, which comprises a drawer cabinet body, and a molded case circuit breaker is arranged in the drawer cabinet body. One end of each of the three-phase outgoing line busbars is connected with the outgoing line end of the molded case circuit breaker, and the other end of each of the three-phase outgoing line busbars is connected with an outgoing line connector; mutual inductors are installed on the three-phase outgoing line busbars, a first mutual inductor is installed on the A-phase busbar, a second mutual inductor is installed on the B-phase busbar, a third mutual inductor is installed on the C-phase busbar, and the installation position of the second mutual inductor on the B-phase busbar is staggered from the installation positions of the first mutual inductor and the second mutual inductor on the two sides. An operation hole is formed in the side plate of the cabinet body on one side of the mutual inductors; and the wiring ends of the three mutual inductors face the operation hole. According to the drawer cabinet, the installation structure of the three mutual inductors on the three-phase outgoing line busbar is adjusted, the space utilization rate in the cabinet body is optimized, and therefore the drawer cabinet can be miniaturized, the assembly process is simplified, and meanwhile the heat dissipation performance of the cabinet body can still be ensured.
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