If an extremely safe, undisturbed, durable, and long-lasting line post insulator is needed in a medium voltage overhead line grid, Ensto has a product to offer. The SDI82.2M20 for 24 kV is made of composite and has it all - but the best benefits are yet to come: it is easier and faster to install than ever before, it increases the reliability of power supply and reduces the risk for wildfires.
Ensto’s Petteri Pulkkinen, Head of Product Management, Overhead Lines tells, that the SDI82.2M20 composite insulator has a unique, extremely carefully designed neck structure.
– The conductor is easy to install through the insulator neck made of electrically insulating plastic. This reduces both the work phases required at the work site and the number of tools needed for installation.
Pulling wheels or helical ties are no longer needed in the installation as the conductor can be pulled directly through the insulator's plastic neck. The tightening of the conductor in the insulator is done quickly with a wing nut.
The composite material of SDI82.2M20 is self-cleaning.
– It means that particulate matters such as pollen and air pollution do not stick on the insulator surface but are washed away with rain. Hence, the line post insulator properties do not subside, but the product lasts long in the grid ensuring the power quality and guaranteeing its uninterrupted supply,” Pulkkinen explains.
With more traditional materials, the impurities build up on the insulator over time, increasing the risk of short circuits and power outages.
The composite line post insulator SDI82.2M20 is part of Ensto’s Full Covered Conductor Solution (FCCS) product range. The solution presents better protection for overhead lines e.g., by offering further guard against malfunction caused by birds or tree branches. Thanks to a special top clamp SDI82.2M20 has better electrical properties and as there are no bare, live parts, reduces the risk for wildfires.
The FCCS pays back fast with lower maintenance costs and increased reliability of the overhead line grid. The products are suitable for all markets over the world and new types are constantly being developed based on customer needs. The models and products of FCCS are compiled in a FCCS Handbook designed by experts.