Polymer Suspension Insulators

Suspension composite insulator has features of light weight, small volume, unbreakable, anti-bend, high strength, high strength wrest resistant and strong explosion protection. Due to these versatile possibilities, our suspension polymer insulator can be used for heavily polluted areas, high mechanical tension load, long life span. We test our polymer insulators according to IEC 61109


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1.Polymer Insulator Character:

1) High mechanical strength;
2) Good performance of hydrophobicity and anti-pollution;
3) Excellent electrical Performance;
4) Small volume and light weight.


2. JW polymer Insulator Character:

1) We adopt the advanced injection producing technology for housing and the design of the shed adopt unique aerodynamics principle.

2) Good Raw material :

We use HTV silicone rubber which hydrophobicity can reach to HC1 level

We use hot dip Galvanizing steel fitting ,the thickness of the zinc more than 100 μm.

We use ECR rod as the core which is high acid resistant. 7200Hr testing passed .

3) Special marking design.

We use the double seal design between the rubber and the fitting.

We can mark your logo on the fitting or rubber.

4)  Excellent Manufacture Technology:                       

Perfect match between fitting and rod

With imported end-fitting crimping equipment, ensures the mechanical performance of the product perfectly bound between silicone rubber and the rod.

5) The unique end fitting sealing structure improves product sealing reliability.

6) The strict inspection measures and devices ensure the perfect quality of each unique product.


Voltage 10-1000kV
 Mechanical load  40-530kN
Creepage distance 270-340,000 mm
Max. Dia. Insulator part D 13-53 mm
Standard IEC61109, IEC61952


·Warming up under high temperature
· Assembly of end fittings with reinforced fiber glass rod
· Brush coupling agent on the rod
· Injection molding of vulcanization
· Crimping fittings to the rods or Crimping fittings to the rods before injection
· Surface trimming.

Product Advantages:

1.Light weight

It is small in size and in light weight, it is about 1/5 to 1/9 of the porcelain insulator in the same grade voltage, so it’s convenient for transportation and installation.

2.Good Anti-pollution

Composite insulator has a good anti-pollution performance, so it can operate safely in polluted area, it requires neither annual cleaning nor maintaining at zero.

3.High Anti-fouling property

Good aging resistance performance, strong ability of anti-pollution flashover and good electric corrosion resistance, can ensure that the internal insulation core will not be affected by moisture.

4.Strong shock resistance

Composite insulators have good brittleness resistance, strong shock resistance and there’s no brittle fracture accident. Composite insulators are interchangeable with ceramic.

5.Stable Performance

The composite insulator has high mechanical strength, reliable structure and stable performance, which provides a guarantee for the safe operation of the power lines.


Overhead transmission line or distribution
Tension tower to assembly tension string to tensile conductor
Suspension tower to assembly suspension string to suspend conductor




Efficient order management team will confirm the cooperation plan with you as soon as possible.