Suspension insulators also called Strain insulators, are used for the rated voltage of 35~500kV AC power system in common and dirty areas, overhead transmission and distribution lines and substations with a frequency not exceeding 100Hz for drape and tensile strength.
Composite pin insulator is applicable for high-voltage line facilities. The insulator has good water-repellent, anti-aging and anti-leakage properties. And it is also featured by high resistance to bending and high mechanical strength. It is easy for installation and its installation dimensions of top and bottom parts are the same with those of corresponding porcelain pin type so that they are interchangeable.
1. Excellent electric corrosion-proof property.
2. High mechanical intension.
3. Light weight and easy installation.
The voltage of 10kv – 500kv series composite insulators, silicone rubber insulatorsalso known as polymer insulators or silicone rubber insulators, which include suspension long rod silicone rubber insulators, pin type composite insulators, station post polymer insulators, cross arm silicone rubber insulators, electrified railway polymer insulators, and so on.
Advantages of polymer insulators:
As the replacement of porcelain insulators, silicone rubber composite insulators have many advantages:
1. Excellent anti-pollution performance, suitable for high polluted area
2. Free of cleaning, economical maintenance and suitable for difficult maintenance area
3. No need of zero value check
4. Llight weight, easy and economical to transprotation and installation
5. Not brittle, and reduce the purchasing quantities for spare parts
All composite insulator cross-arm insulators dead-end insulator Disc insulator electrical insulators Electrified railway insulators glass insulator high voltage insulators hollow insulators line post insulators pin insulators polymer insulator porcelain insulator post insulators pRTV insulators supporting insulators Surge Arrester suspension insulators transmission and distribution line insulators
Comparisons of porcelain vs composite insulator
– Polluted Environments
– Leakage current
– Tracking & ARC Resistance
– Installation Cost
– Maintenance Cost
– Mechanical Strength
– Performance Not satisfactory
– More Susceptible
– Performance Excellent
– Highly Resistant