Long Rod Insulator
NGK Polymer Insulators
- History of R&D: Since 1960s. / More than 30 years.
- Manufacturer: NGK-Locke Polymer Insulators, Inc., USA
- Commercial Production: Since 1994 in Virginia Beach, USA.
- Commercial Shipment: Over 500,000 insulators for more than 50 countries.
- Actual Result: No Failure in service through all our experiences.
Polymer Long Rod Insulator for Suspension /
Line Post Insulator
Material & Manufacturing Process
Since 1970s, many materials and designs for polymer insulators had appeared in the market. Inappropriate ones for insulators had been selected from the market with the troubles or failures. NGK had carefully investigated such failure situations and also repeated try & error in our development history for polymer insulators. Finally our polymer insulators reached the current materials and design in 1992. Since, they have never failed by quality problems in service.
The Histroy of NGK Polymer Insulator Development
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Polymer Long Rod Insulators / Application
I-Suspension / 500 kV DC
I-Suspension / 220 kV AC
Double Tension / 220 kV AC
V-Suspension / 765 kV AC
Polymer Long Rod Insulators / Lineup
Variery of polymer long rod insulators
Core size option and the mechanical rating:
|Nominal Core Diameter, mm||IEC Mechanical Rating||ANSI Mechanical Rating||Applicable Length||Applicable Voltage Level|
|16||- 120 kN||- 30,000 lbs.||- 4 m||- 765 kV|
|22||- 210 kN||- 50,000 lbs.||- 6 m|
|32||- 450 kN||- 80,000 lbs.|
Shed profile option
Polymer Long Rod Insulators / Test
Tensile Load-Time Test
Power Arc Test
Tracking Wheel Aging Test
Long Duration Aging Test
Inquiry about Polymer Insulators
Please apply with the contact form and give us your comments or questions.