A trip unit
CN224696739UActive Publication Date: 2026-08-28EMERSON NETWORK POWER CO LTD
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Patent Information
- Application Number
- CN202522227839.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-21
- Publication Date
- 2026-08-28
- Estimated Expiration
- 2035-10-21
AI Technical Summary
Technical Problem
[0003]本实用新型的目的在于解决现有的低压防雷器内部基本都会装设热脱扣装置，当内部通流量大，温度高时，会使低熔点的焊点熔化，形成短路状态，该操作方式安全可靠性较低，目前现有的热脱扣装置结构复杂，用料较多，导致生产成本较高，且无法提示操作人员防雷器内部状态的缺点，提供一种脱扣装置
Benefits of technology
[0013]进一步地，所述抵接部为圆形，且外缘面贴合于所述绝缘筒柱的内壁。通过将绝缘卡扣的抵接部设置为圆形，并使得抵接部的外缘面贴合于绝缘筒柱的内壁，可以有效使得低熔焊点融化后，绝缘卡扣带动导体部件沿绝缘筒柱的内壁移动，并提高绝缘卡扣在移动过程中的位移精度。
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Figure CN224696739U_ABST
Abstract
The utility model provides a kind of tripping device, including insulating cylinder, tripping assembly and mounting structure;Tripping assembly includes insulating buckle and conductor component, tripping assembly is elastically connected in insulating cylinder by mounting structure.The tripping device provided by the utility model is electrically connected by using low-melting solder point with the protection device inside lightning arrester, and insulating buckle is elastically connected in insulating cylinder using mounting structure, can when there is large current through protection device, large current passes through low-melting solder point and reaches the melting point here, so that the solder point here loosens, so that insulating buckle is pushed under the elastic force of spring The conductor component moves, so that low-melting solder point forms open circuit;In addition, the front end of insulating buckle is worn out from insulating cylinder, so as to effectively prompt operator lightning arrester is in open circuit state, to improve the convenience of operator maintenance operation.
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