Electrical




In rail systems, there are many electrical systems in stations and tunnels to maximize energy efficiency and ensure uninterrupted operation of the system.

OKRAY; provides the necessary consultancy services for a system design at international standards.





Transformer, or transformer for short, enables the transfer of energy from one electrical circuit to another electrical circuit via electromagnetic field. In rail systems, transformers are used to step up or step down voltage or current in an electrical circuit.

Okray, provides consultancy services at IEC60044-8, IEC 60076, EN 50329 and VDE 0532 standards.





It is installed to feed all critical loads such as lighting, ventilation, UPS loads, fire pumps, which are selected in case of power outages or failures. The Emergency Power Generator also provides power for the traction system in order to move the trains on the line and ensure the safe evacuation of passengers at the station.

Okray, It will provide consultancy services in ISO 9001, ISO 8528-5, IEC 60034-1, VDE 0530 standards.






Okray provides consultancy in determining all MV, LV and DC cables within the scope of the project according to the required standards.





As a general design principle, rectifiers; It has a highly efficient, low maintenance, safe and modular compact structure. A rectifier or rectifier is an electrical circuit used to convert alternating current made up of one or more semiconductor elements to direct current.
Okray provides consultancy in IEC 60146, EN 50327, EN 50328 standards.






Protection of electronic systems is very important in rail systems. For this reason, a sustainable earthing system is essential in rail systems. Earthing design complies with local and international standards and residual current protection and safety are provided.

Okray provides consultancy services in accordance with EN50122 standards.