Composite Line Post Insulator – Pole line
Composite insulators are more suitable for use in high pollution areas, have higher mechanical strength, are lighter than porcelain insulators, and require less cleaning and maintenance.
Description
Key Features
- Bottom Mounting (Foot):
- Slotted base “foot” allows for quick bolted installation on cross‑arms or brackets
- Oversized slot accommodates slight alignment variations in the field
- Composite Body:
- Silicone Rubber Housing: Hydrophobic, UV‑stabilized surface sheds water and contamination to minimize leakage currents
- Fiberglass Core Rod: High tensile strength (typically 40–70 kN MBL) supports conductor tension, ice and wind loads
- Insulating Fins:
- Multiple sheds (fins) increase creepage distance, reducing flashover risk in polluted or coastal areas
Product Test Reports
All our products undergo rigorous mechanical, electrical, and environmental testing according to IEC standards. Below are examples of actual test reports from our laboratory and third-party certifications.
Our Factory
China Energy And Chemical Industry Co., Ltd — 16+ years OEM Transmission Insulator Manufacturer, IEC certified, supplying customers worldwide with polymer, porcelain, and glass insulators.




