Innovation from RPC: Insulators with integrated fiber-optic cable and solid filling

An efficient energy automation system based on fiber-optic cable technology, manufactured in accordance with the new communication standard IEC 61850, was recently installed in the 138 kV substation at Posto Fiscal in Paraná (Brazil). This is a pilot project run by a Brazilian energy provider. The key elements of the system are the optical current transformers from Arteche-SDO on supporting insulators from Reinhausen Power Composites (RPC).

The RPC insulators are in fact innovative twice over. Firstly the fiber-optic cable is integrated in the insulator and secondly the filling is a special silicone gel. RPC is the first provider anywhere in the world to offer this innovative solution.

In the past the fiber-optic cable ran separately next to the insulator from the high-voltage level to the ground potential. The new, integrated solution from RPC simplifies assembly and makes it safer. The second innovation is that the insulator is not filled with oil or gas, but a solid, which requires no monitoring, as say the pressure of a gas filling would. Seal integrity problems, such as those experienced with oil fillings, are also excluded.

Alongside these innovative benefits, the RPC hollow composite insulators offer proven advantages over standard porcelain insulators. They are significantly lighter, resistant to destruction and earthquakes, and display excellent water-repellent and insulating properties even in heavily contaminated surroundings. RPC insulators are therefore the product of choice in many applications.



The IEC 61850 standard has been produced in conjunction with manufacturers and users to provide one common, future-proofed basis for switchgear protection, communication, and control.