Our firm is engaged in offering a wide range of Polymer Disc Insulator to our clients. These are also known as polymer insulators, which are made using silicon rubber. Due to some features like longer life and maintenance free, these are highly demanded by our customers.
Polymer Disc Insulators heavy in weight, approx wt of 400 kv is about 135 kgs. 90% lighter than porcelain insulators, but offer an equal to better strength. Approx wt of 400 kv is less than 14 kgs range ability highly fragile to shock & vibration not fragile to shock spacking & transport risky & expensive easy & economical installation risky, expensive and more labour required very easy & economical handling difficult easy maintenance cost high low vandalism more susceptible highly resistant breakages & secondary damage highly fragile - 10 to 15% breakages are reported during transportation, storage and installation composite insulators are flexible and therefore, highly resistant to breakages. Mechanical failure reductionism in mechanical strength and separation due to pings getting eroded Single piece hence no such problem resistance to flash overs & puncture slow high anti tracking and erosion resistance very low - poor tracking resistance excellent tracking resistance avoids erosion or tracking of the housing material. Die electric strength lower than polymer excellent insulation performance contamination & pollution highly affected not affected and has longer life hydrophobicity non hydrophobic, porcelain surface forms water film on the surface making easy path leading to more flash overs the hydrophobicity properties of silicon rubber provide excellent insulating behavior and resists wetting by forming beads of water with out the need of washing or greasing even in humid or polluted climates.
Hence low failure rate combined with low overall operating and maintenance costs. Self cleaning quality no. - dirt, sand, salt & snow are easily attracted yes. Due to hydrophobicity recovery characteristic tensile strength good excellent due to crimping technology. Maintenance needs maintenance like cleaning, washing and greasing no maintenance is required design design flexibility is limited. Requires larger and heavier towers for installation and more space. Polymer insulator design allows for adaption to suit specific needs such as creepage distance. Results in space saving and lower cost manufacturing process porcelian insulators require long manufacturing process leading to long delivery time. Manufacturing process causes pollution & health risk. Pollution free, safe, short process time leading to short delivery periods safety porcelain insulators are susceptible to explosion & breakages, due to high fragile properties , stone throwing etc composite insulators provide very high level of safety, superior flexibility and strength. Not susceptible to explosion. No breakages due to stone throwing etc the advantages of polymer insulators over porcelain insulators general comparison technical comparison.