11KV 33KV 66KV 115KV Medium Voltage silicone rubber 36kv composite polymer pin insulator

115kV silicone rubber composite insulator is designed for use in 115kV transmission and distribution lines as a high-performance suspension insulator. The core consists of a 24 mm epoxy resin and acid-resistant glass fiber rod, providing excellent tensile strength and long-term durability. The weather sheds are made of HTV silicone rubber, offering superior hydrophobicity, weather resistance, and anti-aging performance.

This 115kV composite insulator can withstand a Specified Mechanical Load (SML) of 120 kN, ensuring high mechanical reliability under tension. The total length is 1175 mm with a creepage distance of 3810 mm. Both ends are equipped with Y-Clevis 19 (IEC 61466-1) and Ball ANSI 52-5 fittings, featuring 86 μm hot-dip galvanized coating for excellent corrosion protection.

In terms of electrical performance, it ensures reliable insulation under all conditions, featuring 350 kV dry and 300 kV wet power frequency flashover voltage, and a 590 kV impulse flashover voltage.

The 115kV silicone rubber composite insulator is widely used in power transmission projects across the Americas, providing a dependable solution for high-voltage overhead line systems.

115kV Silicone Rubber Composite Insulator Technical Specifications

DIMENSIONS
Height: 1175±25 mm
Min. Dry Arcing Distance: 980 mm
Min. Creepage Distance: 3810 mm
Diameter of the Rod: φ24 mm
Coupling Dimensions: Y Clevis 19 (IEC 61466-1)/Ball Ansi 52-5
Number of Sheds: 36

MECHANICAL PERFORMANCE
According to IEC 61109
Specified Mechanical Load (SML): 120 kN
Routine Test Load (RTL): 60 kN

ELECTRICAL PERFORMANCE
According to IEC 61109
Rated Voltage: 115kV
Low Frequency Flashover Voltage (Wet/Dry): 300kV / 350kV
Critical Impulse Flashover Voltage: 590kV

RAW MATERIALS
1. End-fitting:
1.1 Material:
Y-Clevis: Forged Steel or Cast Steel, Hot Dip Galvanized.
Ball: Cast Steel or Forged Steel, Hot Dip Galvanized.
1.2 Minimum Thickness of the Galvanization: 86μm
2. Core:
2.1 Material: Epoxy & Glass Fiber, Acid-Resistant Type
2.2 Diameter: φ24 mm
3. Weather Sheds
3.1 Material: High Temperature Vulcanized Silicone Rubber
3.2 Color: Gray