35kV Composite Polymer Line Post Insulator

The 35kV composite polymer line post insulator is designed for 35kV medium voltage overhead distribution lines. It is vertically mounted on cross-arms or poles to provide both mechanical support for conductors and electrical insulation. The polymer line post insulator consists of a high-strength fiberglass core rod, hydrophobic silicone rubber sheds, and galvanized metal end fittings, offering excellent pollution resistance, UV stability, and long-term performance in outdoor environments.

With a creepage distance of 1140 mm and a dry arcing distance of 410 mm, this line post insulator meets the requirements of IEC 61952, ensuring reliable operation under wet, polluted, and high-voltage conditions. It supports a specified cantilever load (SCL) of 10 kN, making it suitable for demanding mechanical installations.

Description

35kV Composite Polymer Line Post Insulator Technical Specifications

35kV polymer line post insulator technical specifications

DIMENSIONS:
• Height: 18.9″±0.39″ (480±10 mm)
• Dry Arcing Distance: 16.14″ (410 mm)
• Creepage Distance: 44.88″ (1140 mm)
• Diameter of the Rod: ⌀1.77″ (45 mm)
• Number of Sheds: 13
• Weight: 5.6 kg

MECHANICAL:
• Specified Cantilever Load (SCL): 10 kN
• Max. Design Cantilever Load (MDCL): 5 kN
• Standard: IEC 61952

ELECTRICAL:
• Rated Voltage: 35 kV
• Power Frequency Withstand Voltage (Wet 1 Min): 100 kV
• Power Frequency Withstand Voltage (Dry 1 Min): 130 kV
• Lightning Impulse Withstand Voltage: 235 kV
• Standard: IEC 61952

RAW MATERIALS:
1. End fitting:
1.1 Material: Cast Iron or Cast Steel, Hot Dip Galvanized
1.2 Minimum thickness of the galvanization: 86 μm
2. Core:
2.1 Material: Epoxy & Glass Fiber
2.2 Diameter: ⌀1.77″ (45 mm)
3. Weather Sheds:
3.1 Material: HTV Silicone
3.2 Color: Gray

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