Plug in Epoxy Bushing

Since the mid‑20th century, when epoxy resins first replaced traditional oil‑impregnated paper and porcelain in high‑voltage bushings, the Plug in Epoxy Bushing has evolved from a simple insulation component into a precision-engineered interface that ensures reliable power transmission under extreme electrical and mechanical stress. Developed by our in‑house R&D team with over 30 years of experience in composite insulation technology, this bushing is manufactured using high‑purity cycloaliphatic epoxy resin combined with a proprietary vacuum‑casting process, which eliminates micro‑voids and guarantees partial discharge levels below 5 pC at rated voltage. Today, it serves utility companies, heavy industrial plants, and renewable energy projects worldwide-from offshore wind farms to urban substation retrofits-where compact design, fire retardancy, and long‑term moisture resistance are non‑negotiable. In an industry that increasingly demands maintenance‑free solutions with 40‑year service lives, our Plug in Epoxy Bushing not only meets IEEE and IEC standards but also outperforms conventional porcelain and oil‑filled designs in seismic zones and polluted environments, thanks to its hydrophobic silicone‑coated outer surface and stress‑grading internal shield.