{
  "url": "https://openlegislation.uk/restrictive-trade-practices-standards-and-arrangements-services-order-1991/schedule/part-I",
  "json_url": "https://openlegislation.uk/restrictive-trade-practices-standards-and-arrangements-services-order-1991/schedule/part-I.json",
  "legislation": "uksi/1991/1897",
  "legislation_title": "The Restrictive Trade Practices (Standards and Arrangements) (Services) Order 1991",
  "legislation_url": "https://openlegislation.uk/restrictive-trade-practices-standards-and-arrangements-services-order-1991",
  "path": "schedule/part/I",
  "kind": "part",
  "number": "I",
  "heading": "STANDARDS APPROVED",
  "text": "09–4\n66 and 132kV impregnated paper insulated oil-filled and gas-pressure type power cable systems\nIssue 3, 1991\n09–5\n275 and 400kV impregnated paper insulated oil-filled and gas compression type power cable systems\nIssue 3, 1991\n09–12\nImpregnated paper insulated corrugated aluminium sheathed 6350/11000 volt cables\nIssue 2, 1990\n09–17\nSingle core cables for use in substations having extruded insulation and rated voltages of 6350/11000 volts and 19000/33000 volts\nIssue 2, 1991\n09–21\nCrossed-linked polymeric insulated triplex cables for a rated voltage of 6350/11000 volts (Um=12000V)\nIssue 1, 1990\n12–5\nIndicating lamps–filament type\nIssue 2, 1989\n12–10\nSingle phase domestic cut-outs, connector blocks and interconnecting units up to 100A rating\nIssue 2, 1990\n37–2\nL.V. distribution fuse boards\nIssue 3, 1990\nErrata, 1990\n41–10\nSwitchgear for use on 66, 132, 275 and 400kV systems\nAddendum, 1991 to Issue 3, 1989\n41–15\nStandard circuit diagrams for equipment in 132kV substations\nPart 1: Transformer feeder, transformer end\nAmendment 1, 1991 to Issue 1, 1978\nPart 6: Bus section and bus coupler\nIssue 1, 1989\nPart 9: AC traction supplies to British Rail\nIssue 1, 1989\n41–26\nDistribution switchgear for service up to 36kV (Cable connected)\nIssue 1, 1991\n41–27\nOutdoor distribution switchgear for service up to 36kV (Overhead conductor connected)\nIssue 1, 1991\n43–13\nAerial bundled conductors (ABC) insulated with cross-linked polyethylene for low voltage overhead distribution\nIssue 2, 1990\nCorrigendum 1991\n43–14\nConductor fittings and associated apparatus for use with lv aerial bundled conductors\nIssue 2, 1990\n43–15\nInsulator binds and equivalent helical fittings for overhead lines\nIssue 2, 1990\n43–88\nTreatment of wood poles and associated timber for overhead lines\nIssue 3, 1987\n43–90\nAnti-climbing devices and safety signs for hv lines up to and including 400kV\nIssue 3, 1991\n43–93\nLine Insulators\nIssue 3, 1986\nAmendment 1987\n43–94\nEarth rods and their connectors\nIssue 3, 1990\n44–5\nTesting the insulation systems of stator coils for rotating electrical machines\nIssue 5, 1987\n98–5\nAutomatic ultrasonic testing of tubes\nPart 3: Longitudinally submerged arc welded steel tubes, outside diameters 160mm and above\nAmendment No. 1, 1990 to Issue 2, 1989\n98–16\nDefect evaluation and size estimation by the manual ultrasonic testing method\nIssue 1, 1990\n98–17\nRadiographic examination of fusion welded butt joints in steel\nIssue 1, 1988\n98–19\nAcceptance criteria for pipe circumferential butt welds in ferritic alloy steels\nIssue 1, 1990\n98–23\nUltrasonic and visual inspection of components lined with tin based white metal\nIssue 1, 1990\nT2\nTransformers and reactors 1966\nSection 12: Cable boxes, cable sealing-end chambers and disconnecting chambers\nRevision 1, 1987\nG59/1\nRecommendations for the connection of embedded generating plant to the Regional Electricity Companies' distribution systems\n1991\nG72\nOperational requirements for SF6 switchgear under loss of pressure conditions\n1991\nL38/1\nProtective greasing of PVC-covered copper and bare and PVC-covered aluminium based overhead line conductors\n1991\nM10/4\nSerial numbering of meters\n1991\nM25/1\nImproving the security of meters and associated service equipment\n1987\nP23/1\nCustomers' earth fault protection for compliance with the IEE Wiring Regulations for electrical installations\n1991\nACE 80\nGuide to the maintenance of electrical plant up to and including 132kV\n1981 incorporating revised section 30, 1989",
  "extent": null,
  "status": null,
  "version": "current",
  "annotations": [],
  "outstanding_effects": [],
  "provenance": {
    "source": "legislation.gov.uk",
    "source_url": "https://www.legislation.gov.uk/uksi/1991/1897/schedule/part/I",
    "retrieved_at": "2026-10-29T14:39:10.425673+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."
}