# The Restrictive Trade Practices (Standards and Arrangements) (Services) Order 1991, Part I: STANDARDS APPROVED 09–4 66 and 132kV impregnated paper insulated oil-filled and gas-pressure type power cable systems Issue 3, 1991 09–5 275 and 400kV impregnated paper insulated oil-filled and gas compression type power cable systems Issue 3, 1991 09–12 Impregnated paper insulated corrugated aluminium sheathed 6350/11000 volt cables Issue 2, 1990 09–17 Single core cables for use in substations having extruded insulation and rated voltages of 6350/11000 volts and 19000/33000 volts Issue 2, 1991 09–21 Crossed-linked polymeric insulated triplex cables for a rated voltage of 6350/11000 volts (Um=12000V) Issue 1, 1990 12–5 Indicating lamps–filament type Issue 2, 1989 12–10 Single phase domestic cut-outs, connector blocks and interconnecting units up to 100A rating Issue 2, 1990 37–2 L.V. distribution fuse boards Issue 3, 1990 Errata, 1990 41–10 Switchgear for use on 66, 132, 275 and 400kV systems Addendum, 1991 to Issue 3, 1989 41–15 Standard circuit diagrams for equipment in 132kV substations Part 1: Transformer feeder, transformer end Amendment 1, 1991 to Issue 1, 1978 Part 6: Bus section and bus coupler Issue 1, 1989 Part 9: AC traction supplies to British Rail Issue 1, 1989 41–26 Distribution switchgear for service up to 36kV (Cable connected) Issue 1, 1991 41–27 Outdoor distribution switchgear for service up to 36kV (Overhead conductor connected) Issue 1, 1991 43–13 Aerial bundled conductors (ABC) insulated with cross-linked polyethylene for low voltage overhead distribution Issue 2, 1990 Corrigendum 1991 43–14 Conductor fittings and associated apparatus for use with lv aerial bundled conductors Issue 2, 1990 43–15 Insulator binds and equivalent helical fittings for overhead lines Issue 2, 1990 43–88 Treatment of wood poles and associated timber for overhead lines Issue 3, 1987 43–90 Anti-climbing devices and safety signs for hv lines up to and including 400kV Issue 3, 1991 43–93 Line Insulators Issue 3, 1986 Amendment 1987 43–94 Earth rods and their connectors Issue 3, 1990 44–5 Testing the insulation systems of stator coils for rotating electrical machines Issue 5, 1987 98–5 Automatic ultrasonic testing of tubes Part 3: Longitudinally submerged arc welded steel tubes, outside diameters 160mm and above Amendment No. 1, 1990 to Issue 2, 1989 98–16 Defect evaluation and size estimation by the manual ultrasonic testing method Issue 1, 1990 98–17 Radiographic examination of fusion welded butt joints in steel Issue 1, 1988 98–19 Acceptance criteria for pipe circumferential butt welds in ferritic alloy steels Issue 1, 1990 98–23 Ultrasonic and visual inspection of components lined with tin based white metal Issue 1, 1990 T2 Transformers and reactors 1966 Section 12: Cable boxes, cable sealing-end chambers and disconnecting chambers Revision 1, 1987 G59/1 Recommendations for the connection of embedded generating plant to the Regional Electricity Companies' distribution systems 1991 G72 Operational requirements for SF6 switchgear under loss of pressure conditions 1991 L38/1 Protective greasing of PVC-covered copper and bare and PVC-covered aluminium based overhead line conductors 1991 M10/4 Serial numbering of meters 1991 M25/1 Improving the security of meters and associated service equipment 1987 P23/1 Customers' earth fault protection for compliance with the IEE Wiring Regulations for electrical installations 1991 ACE 80 Guide to the maintenance of electrical plant up to and including 132kV 1981 incorporating revised section 30, 1989 --- Source: https://www.legislation.gov.uk/uksi/1991/1897/schedule/part/I (the official version) Page: https://openlegislation.uk/restrictive-trade-practices-standards-and-arrangements-services-order-1991/schedule/part-I Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.