BS EN 50341-2-22 is a part of the BS EN 50341 standard that discusses the national normative aspects for Poland for overhead electrical lines exceeding AC 1 kV. Overhead lines or overhead wires are used to transmit electrical energy to trams, trolleybuses and trains.
BS EN 50341-2-22 determines the requirements which shall be fulfilled while designing and constructing new overhead lines with nominal system voltages exceeding 1 kV AC. The scope of use of this NNA for temporary lines shall be determined by the Project Specification. For modernisations, reconstructions and refurbishments of the existing lines, the scope and the requirement to comply with PN-EN-50341-1, together with this NNA, shall be determined by the Project Specification.
BS EN 50341-2-22 applies to overhead lines with covered conductors and overhead insulated cable systems with nominal voltage exceeding 1 kV up to 45 kV AC. Additional requirements and simplifications, which apply only to this range of voltages, have been determined.
BS EN 50341-2-22 also applies to optical phase conductors (OPCON) and optical ground wires (OPGW), containing optical fibre telecommunication circuits, installed on overhead line supports. BS EN 50341-2-22 applies to all-dielectric cables (ADSS) only within the scope of their influence on the load of the support and the requirements of the insulator clearances.
BS EN 50341-2-22 also applies to the installation of telecommunication equipment mounted on the new line structures with their primary function as overhead line supports.
Note: BS EN 50341-2-22 does not contain requirements applicable for designing and constructing overhead lines with nominal voltage exceeding 45 kV AC, with covered conductors, where internal and external clearances can be smaller than specified in the NNA.
BS EN 50341-2-22 on overhead electrical line applies to:
Overhead lines or overhead wires are used to transmit electrical energy to trams, trolleybuses and trains. Overhead lines are designed on the principle of one or more overhead wires situated over rail tracks. Feeder stations at regular intervals along with the overhead line supply power from the high-voltage grid.
BS EN 50341-2-22 provides you with the security requirements where the project specification introduces the partial factor used for the effect of the actions and Durability.
It determines the category of the corrosive properties of the environment through the line route. This helps you in producing a good quality of overhead lines and manufacturing it in a standardized manner.
EN 50341-2-22:2016