High-precision combined mutual inductor

By introducing secondary fixing, cooling, and vibration damping components into high-precision combined instrument transformers, the risk of insulation structure damage and failure caused by unstable secondary fixing is solved. This achieves stable connection, cooling, and vibration damping, improves the insulation performance and measurement accuracy of the equipment, and ensures the safety of the power system.

CN120545078BActive Publication Date: 2026-06-09ZHEJIANG ZHONGLU ELECTRIC POWER EQUIPMENT TECHNOLOGY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2025-05-28
Publication Date
2026-06-09

AI Technical Summary

Technical Problem

High-precision combined current transformers are difficult to fix in a secondary manner, which can lead to damage to the insulation structure, increase the risk of faults such as leakage and short circuit, and easily cause insulation breakdown and equipment damage in high-voltage environments.

Method used

The secondary fixing mechanism, consisting of components such as base, transformer housing, mounting plate, heat absorption plate, fixing block, moving frame, tie rod, spring, hex bolt and threaded sleeve, combined with cooling and vibration damping components, achieves stable connection, cooling and vibration damping, and prevents mechanical stress and vibration from affecting the transformer.

Benefits of technology

This improved the insulation performance of the instrument transformer, reduced the probability of leakage and short-circuit faults, extended the equipment life, and ensured measurement accuracy and the safe and stable operation of the power system.

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Abstract

This invention relates to the field of power measurement equipment and discloses a high-precision combined current transformer, including a base. A current transformer housing is mounted on the top of the base. Assembly plates are mounted on the left and right sides of the top of the base. Secondary fixing mechanisms are provided on the front and rear sides of the interior of the base. A cooling component is mounted on the right side of the top of the base, and multiple shock-absorbing components are mounted on the bottom of the base. The secondary fixing mechanism includes a heat-absorbing plate, the top of which is fixedly connected to the bottom of the base, and fixing blocks are fixedly connected to the front and rear sides of the heat-absorbing plate. This invention achieves secondary fixing of the high-precision combined current transformer, thereby reducing damage to the transformer's insulation structure caused by mechanical stress, preventing damage to insulating components, avoiding serious accidents caused by insulation breakdown, and enabling the current transformer to continuously output current and voltage measurement data with extremely small errors, ensuring that the measurement accuracy always meets national standards.
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Citation Information

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