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Suspension Insulator

A suspension insulator is a critical component in power line construction, designed to mechanically support and electrically isolate conductors in overhead transmission and distribution systems. It is typically suspended from towers or poles, carrying high-voltage conductors while preventing leakage currents and flashovers. Its modular design allows multiple insulator units to be connected in series to handle higher voltages, ensuring reliability in both medium- and high-voltage networks.

Key Features:

  • High Dielectric Strength – Provides excellent electrical insulation to prevent current leakage.
  • Mechanical Durability – Engineered to withstand high tensile loads from conductors.
  • Weather & Pollution Resistance – Resistant to environmental stresses such as UV, rain, dust, and industrial pollution.
  • Modular Design – Units can be assembled in strings to meet voltage requirements.
  • Low Maintenance – Smooth surface minimizes dust accumulation and facilitates self-cleaning during rain.
  • Versatility – Suitable for both AC and DC transmission systems.
  • Long Service Life – Manufactured from porcelain, toughened glass, or polymer composites for durability.

Product Details

General

ApplicationSuspension
EU RoHS IndicatorContact Manufacturer
Fitting – Ground/BaseSocket
Fitting – Live Line EndBall
Material – End FittingSocket – Duct. Iron / Ball – Steel
Material – Pin (Cotter)Stainless Steel
Number of Sheds10
Shed StyleUniform
Strength Rating – Ultimate15000 lb (6803.89 kg)
Tensile Strength15 kip
Tensile Strength – Routine7500 ib (3401.94 kg)

Dimensions

Diameter – Shed(s)5.9 in (149.86 mm)
Length – Effective28.75 in (730.25 mm)
Rod Diameter0.625 in (15.88 mm)
Thickness – Housing0.15 in (3.81 mm)
Weight6 lb (2.72 kg)

Electrical Ratings

Arc Distance – Dry29 in (736.6 mm)
Creep and Leakage Distance69 in (1752.6 mm)
Critical Impulse Flashover (CIFO) – Negative510
Critical Impulse Flashover (CIFO) – Positive500
Flashover Voltage – 60 Hz Dry315
Flashover Voltage – 60 Hz Wet245
Voltage – Line69000 V

Logistics

Pallet Quantity48
Standard Package12

Resources and Downloads

SpecificationsDownload PDF
Technical DrawingsN/A