reunajärjestelmien

Reunajärjestelmien (RJ) are a type of electrical system used in the Finnish railway network. They are designed to provide power to trains, allowing them to operate efficiently and safely. The RJ system is a 15 kV 16.7 Hz alternating current (AC) system, which is different from the standard 50 Hz AC used in many other countries. This unique frequency is chosen to minimize interference with other electrical systems and to ensure compatibility with the Finnish electrical grid.

The RJ system is operated by VR-Yhtymä, the Finnish state-owned railway company. It is responsible for maintaining and upgrading the RJ system to meet the growing demand for railway transportation in Finland. The system is also used to power other electrical equipment along the railway tracks, such as signals and level crossings.

The RJ system is an essential part of the Finnish railway infrastructure, enabling the efficient and safe operation of trains. It is a critical component of the country's transportation network, supporting both passenger and freight services. The system is continuously monitored and maintained to ensure its reliability and safety, making it a vital asset for the Finnish economy and society.