11kV Polymer Disc Insulator – High Performance Insulation for Medium Voltage Lines
The 11 kV polymer disc insulator is a current, modern, relatively light weight and rugged insulator designed for medium voltage, overhead power lines. This insulator is constructed of advanced polymers, providing excellent insulation capability, high tensile strength and resilience from environmental stresses will be the insulator of choice for utility and industrial power networks of today.
What is an 11 kV Polymer Disc Insulator?
An 11 kV polymer disc insulator is installed as a suspension-type insulator for the electrical support and isolation of conductors in pylons for overhead lines rated at 11 kilovolts. This insulator is built with a fiberglass core rod and silicone rubber housing (excellent insulation properties, pollution resistance moisture resistance and mechanical damage resistance).
In contrast to traditional porcelain disc insulators, polymer disc insulators are non brittle, lighter, and maintenance free.
Standards
Rated Voltage: 11 000 Volts (11kV)
Material: Silicone rubber house, fiberglass reinforced core
Insulator Style: Suspension / disc (for overhead lines)
Pollution Resistance: Higher creepage distance (dirt, moisture, contaminants)
Weatherproof: Performs in rain, UV, humidity and salt conditions
Compliance: IEC, IS and ANSI
Typical Technical Specifications:
| Specification | Value |
|---|---|
| Rated Voltage | 11 kV |
| Creepage Distance | ≥ 320 mm |
| Power Frequency Withstand | ≥ 35 kV |
| Lightning Impulse Withstand | ≥ 75 kV |
| Mechanical Failing Load (MFL) | ≥ 70 kN |
| Housing Material | Silicone Rubber / EPDM |
| Core Material | Pultruded Fiberglass Rod |
| End Fittings | Hot-dip Galvanized Steel |
Benefits Compared to Conventional Insulator Materials:
Lightweight – It is possible that this insulator can be up to 80% lighter than porcelain or glass insulators.
Break-resistant – there is proved to be no cracks or cracks when handling this insulator assembly.