【正文】 e for stranded wires .................................................................... 20 T able 7 ? Factor Kra dius for ropes of nonconducting materials .................................. 22 T able 8 ? Contact wire gradients ............................................................................... 23 T able 9 ? Electrical clearances ................................................................................. . 25 T able 10 ? Phase voltage clearance .......................................................................... 25 T able ? Pollution ................................................................................................. 44 T able ? Maximum acceptable temperatures over which the mechanical properties of the material can be impaired. .......................................................... 45 5 EN 50119:2020 1 Scope This European Standard applies for the design and construction of electric traction overhead contact lines in railway and tramway applications (see clause 4). The standard is intended to be used by the system designer for the new construction of electric traction overhead contact lines or for the plete transformation of existing lines according to the client performance objectives. This document does not deal in detail with railway traction electrical supply systems or EMC requirements and is not applicable to feeders which are remote from the track. 2 Normative references This European Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated within it by amendment or revision. For undated references the latest edition of the publication referred to applies. EN 501215 Railway applications Electromagic patibility Part 5: Emission and immunity of fixed power supply installations and apparatus EN 50122 series Railway applications ? Fixed installations EN 501221 Railway applications Fixed installations Part 1: Protective provisions relating to electrical safety and earthing EN 50123 series Railway applications Fixed installations DC switchgear EN 50124 series Railway applications Insulation coordination EN 501241 Railway applications Insulation coordination Part 1: Basic requirements Clearances and creepage distances for all electrical and electronic equipment EN 501251 Railway applications Environmental conditions for fixed installations Part 1: Equipment on board rolling stock EN 50149 Railway applications Fixed installations Electric traction Copper and copper alloy grooved contact wires EN 50152 series Railway applications Fixed installations Particular requirements for . switchgear EN 50163 Railway applications Supply voltages of traction systems EN 60099 series Surge arresters EN 60168 1994 Tests on indoor and outdoor post insulators of ceramic material or glass for systems with a nominal voltage greater than 1 000 V (IEC 60168:1994) EN 50119:2020 6 EN 60383 series Insulators for overhead lines with a nominal voltage above 1 kV (IEC 60383 series) EN 60507 Artificial pollution tests on highvoltage insulators to be used on . systems EN 60672 series Ceramic and glass insulating materials EN 61325 Insulators for overhead lines with a nominal voltage above 1 kV Ceramic or glass insulator units for . systems Definitions, test methods and acceptance criteria IEC 60050466 International electrotechnical vocabulary ? Chapter 466: Overhead lines IEC 60050811 International electrotechnical vocabulary ? Chapter 811: Electric traction IEC 61109 Composite insulators for . overhead lines with a nominal voltage greater than 1 000 V ? Definitions, test methods and acceptance criteria. IEC 61245 Artificial pollution tests on highvoltage insulators to be used on . systems 3 Definitions For the purposes of this European Standard the following definitions apply: Systems overhead contact line system (OCS) supporting work for supplying electrical energy to electromotive power units NOTE The system may include all overhead wiring, including the catenaries, the grooved contact wires and return wires, earth wires, lightning protection wires, line feeders and reinforcing feeders mounted on the supports, overhead conductor rails, foundations and supporting structures and ponents, terminating, supporting, registering or insulating the conductor equipment and switching, detecting or protecting equipment. overhead contact line [IEC 60050811, definition 8113302] contact line placed above (or beside) the upper limit of the vehicle gauge and supplying vehicles with electric energy through roofmounted current collection equipment contact line [IEC 60050811, definition 8113301] conductor system for supplying electric energy to vehicles through currentcollecting equipment overhead line [IEC 60050466, definition 4660101] an electric line whose conductors are supported above ground, generally by means of insulators and appropriate supports. NOTE Certain overhead lines may also be constructed with insulated conductors 7 EN 50119:2020 overhead contact line with catenary suspension [IEC 60050811, definition 8113305] overhead contact line where the grooved contact wire or wires are suspended from one or more longitudinal catenaries NOTE Longitudinal suspension is an equivalent term to catenary suspension.