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Composite long rod insulator

Composite long rod insulator can be specified, manufactured, tested and maintained to be reliable for their service life for HV applications. The range and benefits of these insulators ensure their wide applications.

Composite long rod insulator

Composite long rod insulator applications:
Results showed negligible changes in polymer insulator properties remains constant over wide temperature range. Results showed negligible changes in polymer insulator properties and no electrical or mechanical failures were experienced in long run. It is found that composite insulator can be specified, manufactured, tested and maintained to be reliable for their service life for HVAC and HVDC applications and hence they are now used in most HV applications.

Composite Insulators have been type tested from CPRI/ERDA/NABL Labs.

Range of Polymer long rod Insulator:
11kV – 765kV Long Rod Polymer Suspension & Tension Type Insulator
11-33kV Polymer Long Insulator (Pin Type)
11-66kV Polymer Post Insulator

Benefits of Composite Log Rod Insulator:
Less in weight
Hydrophobic in Nature
High Mechanical Strength
Self – cleaning & require no maintenance
Brittle failure proof
Shock resistance
Low maintenance
UV, OZONE & Weathering Resistant

Electric Network 0perates under very harsh Environments, Industrial Pollution, Marshy Land, Hilly And Un-Friendly Terrain, Extreme Weather, Coastal Region Etc. These environmental conditions make insulator contamination flashover the main concern to the electric utility. Different solutions were tried to combat the insulator flashover. At the beginning there were only Ceramic Insulators. Later Glass Insulators were put to use, but not found very useful. Composite (Polymer) Insulators or Silicone Insulators in 1970s was a turning point. Silicone rubber insulators are generally acknowledged by their superior pollution performance. They are found to be useful in severe weather conditions. They have distinctively hydrophobic surface, they are good resistant to Chemical Influence, Weathering, UV Radiation, their Physiochemical and mechanical properties remain constant over wide temperature range.


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Orient is an international line post insulator manufacturer and supplier of high quality porcelain line post insulators and porcelain pin post insulator.
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