The core operating principles and mechanisms of 1.2kV 600A-1200A Tri-Clamp secondary bushing 1.2 KV 600A Tri-clamp Secondary Bushing rely on the following aspects:
1. High-performance insulating material: These secondary-side bushings are molded from Zytel® high-temperature nylon (HTN). Zytel® HTN offers high reliability, meeting application requirements for thermal stability, strength, toughness, and low moisture absorption, while ensuring the material retains excellent mechanical and electrical properties in high-temperature and high-humidity environments.
2. Electric field control: Although 1.2 kV is classified as a low-voltage rating, electric fields are still generated on the conductor surface during operation. The insulator ensures the electric field remains within safe, permissible limits, thereby preventing surface flashover and corona discharge.
3. Sealing and leak prevention (core function): The bushings are mounted on the transformer tank and secured via gaskets and mechanical fasteners. This not only isolates internal live components from the external environment (moisture, dust) but also maintains the internal oil level or gas pressure, preventing leakage.
4. High current-carrying capacity: To handle currents ranging from 600 A to 1400 A, the internal conductor features a sufficient cross-sectional area to minimize resistive losses; external connections typically utilize multi-hole pin terminals or threaded terminals to evenly distribute mechanical loads from external cable connections and reduce contact resistance.
Below is the diagram for the 1.2kV 600A-1200A Tri-Clamp secondary bushing, can help you understand better:
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