Composite Long Rod Insulator
Composite Long Rod Insulator
https://www.yrinsulators.com/composite-long-rod-insulator.html
Composite long rod insulators are critical components in high-voltage power transmission systems, designed to provide reliable insulation while minimizing weight and maintenance requirements. Made from advanced composite materials such as fiber-reinforced polymer (FRP) cores with silicone rubber sheds, these insulators offer superior mechanical strength, hydrophobicity, and resistance to pollution compared to traditional porcelain or glass insulators.
Applications
High-Voltage Transmission Lines: Used in suspension strings for straight-line supports and tension strings for anchor and dead-end towers.
Substations: Installed in outdoor substation portals and jumpers to provide safe electrical insulation.
Pole Supports: Serve as guy strain insulators for wooden poles and occasionally for steel towers, particularly in areas with challenging mechanical loads.
Design Features for Extra-High Voltage (EHV) Systems
For voltages above 230 kV, composite long rod insulators are often equipped with corona rings, which:
Reduce electrical stress along the insulator surface
Minimize corona discharge, preventing surface degradation
Extend the insulator’s service life in harsh outdoor environments
