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PPC - Hybrid Post Insulators
Hybrid insulators take the advantage of porcelain’s undisputed mechanical strength as required for post insulator applications and composite’s excellent pollution performance in extreme environmental conditions and high pollution areas like industrial, desert or coastal regions.
Hybrid insulators are the optimal technical solution for HVDC projects and highly contaminated and polluted areas: high mechanical strength, excellent pollution performance, long lifetime, minimum deflection and maintenance expenditures reduced to a minimum.
PPC Hybrid Post Insulators are successfully field tested and delivered to clients for projects all over the world.
Dimensions
- Length per piece : max. 2.900 mm / 114.17 in
- Shed diameter : max. 520 mm / 20.47 in
Hybrid principle
The porcelain core is manufactured using the PPC Isostatic process giving better dimensional control of the inserts and much better consistency of the products compared to the conventional production process.
High pressure injection molding is required due to the HTV silicone rubbers high viscosity. The silicone housing is fully bonded to the porcelain solid core, perfectly managing the „triple point“ (fitting-rubber-core) interface. Thanks to the high pressure involved in this operation, the rubber housing adheres directly to the fitting without the need for artificial sealing.