Select Page

Glass Bell Suspension Insulator

A disc insulator is a high-voltage line insulator used in suspension and strain configurations for overhead transmission and distribution networks. Installed in series as an insulator string, it provides reliable electrical insulation and mechanical load support for conductors in medium-, high-, and extra-high-voltage power lines. Disc insulators are engineered to withstand tensile stress, environmental exposure, and electrical surges while maintaining long-term operational stability.

Key Features:

  • High dielectric strength for effective insulation under elevated voltages
  • Modular disc design enabling voltage scalability through series connection
  • Superior mechanical tensile load capacity for suspension and strain applications
  • Glazed porcelain or toughened glass construction for durability and weather resistance
  • Resistance to pollution, moisture, and UV exposure in harsh environments
  • Standardized ball-and-socket or clevis fittings for easy installation and replacement
  • Low maintenance requirements with long service life in transmission infrastructure

Product Details

General

ApplicationGlass Bell Suspension
Break Strength45 N·m (400 lb·in)
Fitting – Ground/Base52-5-L Socket
Fitting – Live Line End52-5-L Ball
MaterialGlass
Material – End FittingGalvanized Steel
Strength Rating – Ultimate25000 lb (11339.81 kg)

Dimensions

Diameter – Bell10 in (254 mm)
Height5.75 in (146.05 mm)
Weight8.6 lb (3.9 mm kg)

Electrical Ratings

Creep and Leakage Distance12.62 in (320 mm)
Critical Impulse Flashover (CIFO) – Negative130 kV
Critical Impulse Flashover (CIFO) – Positive125 kV
Flashover Voltage – 60 Hz Dry80 kV
Flashover Voltage – 60 Hz Wet50 kV

Logistics

Pallet Quantity90
Standard Package6

Resources and Downloads

SpecificationsDownload PDF
Technical DrawingsDownload PDF