Overhead Line Insulation Cover
Complete Wildlife & Flashover Protection for Medium Voltage Overhead Lines. Custom OEM available.
Description
Technical Parameters
Gaodian Technology Co., Ltd. is one of the most reliable manufacturers and suppliers of overhead line insulation cover in China. With abundant experience, we warmly welcome you to buy advanced overhead line insulation cover made in China here from our factory. We also accept customized orders.
Introduction
Overhead Line Insulation Covers are engineered using high-performance High Voltage Vulcanized (HTV) silicone rubber to provide a robust physical and dielectric barrier.
Designed for quick retrofitting on energised or de-energised conductors, substation bushings, and surge arresters, our covers effectively eliminate flashovers, lower maintenance expenses, and improve grid reliability.
Key Features & Benefits
High-Grade HTV Silicone Rubber Material
Outstanding UV, Weathering & Hydrophobic Resistance
Snug-Fit Tool-Free Snap-On Installation
Compliant with IEC & IEEE Standards for Power Utilities
technical specifications
|
Item |
Specification |
|
Material Grade |
High Voltage Vulcanized (HTV) Silicone Rubber |
|
Rated Voltage Range |
11 kV / 15 kV / 24 kV / 33 kV |
|
Dielectric Strength |
≥ 20 kV/mm |
|
Operating Temperature |
-40°C to +180°C |
|
Tensile Strength |
≥ 6.5 MPa |
|
Tracking Resistance |
Class 1A 3.5kV / 4.5kV |
|
Color Options |
Customizable |
|
Installation Type |
Split-type Snap-On Locking |
Our Certificate
Why Choose us?
Custom Mold Design: OEM/ODM capability to manufacture specialized overhead line insulation covers according to your exact technical drawings.
Complete Quality Assurance: Every batch undergoes routine factory testing including voltage withstand, hardness, and thermal aging tests.
Flexible Packaging & SKD Support: Available in bulk or project-tailored kits with color-coded locking pins and mounting clips.
Quality Control at the Source
- Full-Chain Manufacturing: We manufacture silicone rubber and also do the vulcanization ourselves.
- Closed-Loop System: From raw material procurement and precision machining to final assembly and factory testing, we control every processing.
application
Transformer Bushing Boots: Covers primary/secondary bushings on pole-mounted distribution transformers.
Conductor Line Covers: Insulates bare overhead conductors near crossarms, trees, or high-density bird zones.
Surge Arrester & Cutout Covers: Provides insulated capping over top terminals of dropout fuse cutouts and surge arresters.
Substation Busbar Protection: Custom-fitted covers for substation jumpers and rigid busbars.
Packaging & Shipping
Packages are customizable according to requirements, our standard package is carton.
FAQ
Q: Can it be installed live?
A: Installation under power cut is recommended as the standard practice. If live-line installation is required, it must be carried out with live working tools by certified personnel in accordance with safety regulations. Installation without proper protection is not recommended by the manufacturer.
Q: What is the flammability degree of this cover?
A: Yes, our silicone rubber sleeves typically use a flame-retardant formula, which has a degree of V0.
Q: What is the using condition of this overhead line insulation cover?
A: Our silicone rubber cover feature excellent temperature resistance, with a typical continuous operating temperature range of -40°C to +180°C.
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