1. Shed Disc:
Made of a silicone rubber composite.
Exhibits good water retention, preventing the formation of a discharge path.
Water on the surface remains in the form of droplets.
Excellent electrical corrosion resistance.
Good oxygen resistance, ozone resistance, and aging resistance.
2. Core Rod:
Made of an epoxy glass fiber rod.
High tensile strength, approximately 1.5-2 times that of ordinary steel and 3-5 times that of high-strength porcelain.
Good insulation performance.
Provides vibration reduction, creep resistance, and fatigue fracture resistance.
Product Structure
The composite insulator described is an advanced long-rod polymer design known for its high performance and durability. Its housing is made from silicone rubber that provides excellent hydrophobicity as well as resistance to UV radiation and corona discharge. The HTV-molded weathersheds are chemically bonded to the fiberglass rod, forming a unified structure with outstanding electrical and mechanical properties. The metal end fittings are securely crimped onto the fiberglass core, ensuring maximum mechanical strength without affecting the integrity of the silicone housing.
To further enhance protection, a corona ring is mounted on the metal fittings, reducing electrical stress on the housing. The chemical bonding between the silicone housing and the FRP core rod significantly increases the insulator's structural stability. The fiberglass rod is produced using a hydrolysis-resistant resin system, providing long-term reliability even in harsh operating environments.
A 3 mm thick HTV silicone rubber sheath is applied over the rod, offering improved mechanical strength and effectively reducing the electric field intensity along the insulator. This additional sheath also protects the FRP core rod during handling, transportation, and installation. A metastable silicone sealing system is used at the metal-to-rubber interface to prevent moisture penetration into the rod.
Overall, this carefully engineered composite insulator-designed as a long-rod polymer unit-delivers exceptional reliability, mechanical strength, and environmental resistance, making it well-suited for demanding applications and extended service life in various outdoor conditions.
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