{
  "url": "https://openlegislation.uk/eu-regulation-2014-1301/annex/appendix-D",
  "json_url": "https://openlegislation.uk/eu-regulation-2014-1301/annex/appendix-D.json",
  "legislation": "eur/2014/1301",
  "legislation_title": "Commission Regulation (EU) No 1301/2014 of 18 November 2014 on the technical specifications for interoperability relating to the ‘energy’ subsystem of the rail system in the Union (Text with EEA relevance) (revoked)",
  "legislation_url": "https://openlegislation.uk/eu-regulation-2014-1301",
  "path": "annex/appendix/D",
  "kind": "appendix",
  "number": "D",
  "heading": "Specification of the pantograph gauge",
  "text": "D.1\nSPECIFICATION OF THE MECHANICAL KINEMATIC PANTOGRAPH GAUGE\nD.1.1\nGeneral\nD.1.1.1\nSpace to be cleared for electrified lines\nIn the case of lines electrified by an overhead contact line, an additional space should be cleared:\nto accommodate the OCL equipment,\nto allow the free passage of the pantograph.\nThis Appendix deals with the free passage of the pantograph (pantograph gauge). The electrical clearance is considered by the Infrastructure Manager.\nD.1.1.2\nParticularities\nThe pantograph gauge differs in some aspects from the obstacle gauge:\nThe pantograph is (partly) live and, for this reason, an electrical clearance is to be complied with, according to the nature of the obstacle (insulated or not),\nThe presence of insulating horns should be taken into account, where necessary. Therefore a double reference contour has to be defined to take account of the mechanical and electrical interference simultaneously,\nIn collecting condition, the pantograph is in permanent contact with the contact wire and, for this reason, its height is variable. So is the height of the pantograph gauge.\nD.1.1.3\nSymbols and abbreviations\nD.1.1.4\nBasic principles\nFigure D.1\nPantograph mechanical gauges\nCaption:\nYCentre line of the track\nY′Centre line of the pantograph — for deriving the free passage reference profile\nY″Centre line of the pantograph — for deriving the mechanical kinematic pantograph gauge\n1Pantograph profile\n2Free passage reference profile\n3Mechanical kinematic gauge\nThe pantograph gauge is only met if the mechanical and electrical gauges are complied with simultaneously:\nThe free passage reference profile includes the pantograph collector head length and the pantograph sway ep, which applies up to the reference cant or cant deficiency,\nLive and insulated obstacles shall remain outside the mechanical gauge,\nNon insulated obstacles (earthed or at a potential different from the OCL) shall remain outside the mechanical and electrical gauges.\nD.1.2\nSpecification of the mechanical kinematic pantograph gauge\nD.1.2.1\nSpecification of the width of the mechanical gauge\nD.1.2.1.1\nScope\nThe width of the pantograph gauge is mainly specified by the length and displacements of the pantograph under consideration. Beyond specific phenomena, phenomena similar to those of the obstacle gauge are found in the transverse displacements.\nThe pantograph gauge shall be considered at the following heights:\nThe upper verification height h′o\nThe lower verification height h′u\nBetween those two heights, it can be considered that gauge width varies in a linear way.\nThe various parameters are shown in figure D.2.\nD.1.2.1.2\nCalculation methodology\nThe pantograph gauge width shall be specified by the sum of the parameters defined below. In the case of a line run by various pantographs, the maximum width should be considered.\nFor the lower verification point with h = h′u :\nb′ui∕a,mec=bw+epu+S′i/a+qs′i/a+∑jmaxFor the upper verification point with h = h′o :\nb′oi∕a,mec=bw+epo+S′i/a+qs′i/a+∑jmaxFor any intermediate height h, width is specified by means of an interpolation:\nb′h,mec=b′u,mec+h−h′uh′o−h′u×b′o,mec−b′u,mecD.1.2.1.3\nHalf-length bw of the pantograph bow\nThe half-length bw of the pantograph bow depends on the type of pantograph used. The pantograph profile(s) to be considered are defined in LOC&PAS TSI, point 4.2.8.2.9.2.\nD.1.2.1.4\nPantograph sway ep\nThe sway mainly depends on the following phenomena:\nPlay q + w in the axle boxes and between bogie and body.\nThe amount of body inclination taken into account by the vehicle (depending on the specific flexibility s0′, the reference cant D′0 and the reference cant deficiency I′0 ).\nThe mounting tolerance of the pantograph on the roof.\nThe transverse flexibility of the mounting device on the roof.\nThe height under consideration h′.\nD.1.2.1.5\nAdditional overthrows\nThe pantograph gauge has a specific additional overthrows. In case of standard track gauge the following formula applies:\nFor other track gauges the national rules apply.\nD.1.2.1.6\nQuasi-static effect\nSince the pantograph is installed on the roof, the quasi-static effect plays an important role in the calculation of the pantograph gauge. That effect is calculated from the specific flexibility s0′, reference cant D′0 and reference cant deficiency I′0 :\nqs′i=S′0LD−D′0>0h−h′c0qs′a=S′0LI−I′0>0h−h′c0D.1.2.1.7\nAllowances\nAccording to gauge definition, the following phenomena should be considered:\nLoading dissymmetry;\nThe transverse displacement of the track between two successive maintenance actions;\nThe cant variation occurring between two successive maintenance actions;\nOscillations generated by track unevenness.\nThe sum of the abovementioned allowances is covered by Σj.\nD.1.2.2\nSpecification of the height of the mechanical gauge\nGauge height shall be specified on the basis of the static height hcc , of the contact wire at the local point under consideration. The following parameters should be considered:\nThe raising fs of the contact wire generated by the pantograph contact force. The value of fs depends on the OCL type and so shall be specified by the Infrastructure Manager in accordance with point 4.2.12.\nThe raising of the pantograph head due to the pantograph head skew generated by the staggered contact point and the wear of the collector strip fws + fwa . The permissible value of fws is shown in LOC & PAS TSI and fwa depends on maintenance requirements.\nThe height of the mechanical gauge is given by the following formula:\nheff=hcc+fs+fws+fwaD.1.3\nReference parameters\nParameters for the kinematic mechanical pantograph gauge and for Specification of the maximum lateral deviation of the contact wire shall be as follows:\nl — according to track gauge\ns′o = 0,225\nh′co = 0,5 m\nI′0 = 0,066 m and D′0 = 0,066 m\nh′o = 6,500 m and h′u = 5,000 m\nD.1.4\nCalculation of maximum lateral deviation of contact wire\nThe maximum lateral deviation of the contact wire shall be calculated by taking into consideration the total movement of the pantograph with respect to the nominal track position and the conducting range (or working length, for pantographs without horns made from a conducting material) as follows:\ndl=bw,c+bw−b′h,mec\nbw,c — defined in points 4.2.8.2.9.1 and 4.2.8.2.9.2 of LOC&PAS TSI\nD.2\nSPECIFICATION OF THE STATIC PANTOGRAPH GAUGE (TRACK GAUGE SYSTEM 1 520 mm)\nThis is applicable for Member States accepting the pantograph profile in accordance with LOC&PAS TSI point 4.2.8.2.9.2.3.\nThe pantograph gauge shall conform to Figure D.3 and Table D.1.",
  "extent": "E+W+S+N.I.",
  "status": "repealed",
  "version": "current",
  "annotations": [
    {
      "type": "F",
      "label": "F1",
      "text": "Regulation revoked (31.12.2020) by The Railways (Interoperability) (Miscellaneous Amendments and Revocations) (EU Exit) Regulations 2020 (S.I. 2020/318), reg. 1(2)(c), Sch. 2"
    }
  ],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/eur/2014/1301/annex/appendix/D",
    "retrieved_at": "2026-11-01T14:47:06.331338+00:00"
  },
  "licence": "Open Government Licence v3.0",
  "licence_url": "https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/",
  "attribution": "Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives."
}