| BS 171-3:1987 | Power transformers. Specification for insulation levels and dielectric tests |
| BS 171-5:1978* IEC 60076-5:1976 | Power transformers. Specification for ability to withstand short circuit |
| BS 171:1970 | Specification for power transformers |
| BS 171:Part 1:1978 | Power transformers. General |
| BS 171:Part 2:1978 | Power transformers. Specification for temperature rise requirements |
| BS 171:Part 4:1978* IEC 60076-4:1976 | Power transformers. Specification for tappings and connections |
| BS 2538:1954 | Specification for air-cooled flameproof single-phase lighting transformer units supplied from high voltage systems |
| BS 2562:1979 | Specification for cable boxes for transformers and reactors |
| BS 3399:1961 | Specification for transformers for use in ships |
| BS 3535-1:1990* EN 60742:1989 | Isolating transformers and safety isolating transformers. General requirements |
| BS 3535-2:1990 | Isolating transformers and safety isolating transformers. Specification for transformers for reduced system voltage |
| BS 3938:1973 | Specification for current transformers |
| BS 3941:1975 | Specification for voltage transformers |
| BS 4533:Part 102:Section 102.6:1990* EN 60598-2-6:1989 | Luminaires. Particular requirements. Specification for luminaires with built-in transformers for filament lamps |
| BS 4727-2:Group 04:1991* IEC 60050-421:1990 | Glossary of electrotechnical, power, telecommunication, electronics, lighting and colour terms. Terms particular to power engineering. Power transformers and reactors |
| BS 4727-2:Group 09:1981 | Glossary of electrotechnical, power, telecommunication, electronics, lighting and colour terms. Terms particular to power engineering. Transductor terminology |
| BS 4819-1:1989* ISO 7284-1984 | Resistance welding water-cooled transformers of the press package and portable types. Specification for press-package transformers |
| BS 4819-2:1989 | Resistance welding water-cooled transformers of the press-package and portable types. Specification for portable transformers |
| BS 4944:1973 | Specification for reactors, arc-suppression coils and earthing transformers for electric power systems |
| BS 5067:1985 | Specification for flameproof transformers for use in mines |
| BS 5347:1976 | Specification for silicon-iron strip-wound cores for use in transformers and inductors for telecommunications and electronic equipment |
| BS 5938-1:1984* IEC 60367-1:1982 | Cores for inductors and transformers for telecommunications. Methods of measurement |
| BS 5938-2:1980* IEC 60367-2:1974* IEC 60367-2A:1976 | Cores for inductors and transformers for telecommunications. Guide to the drafting of performance specifications |
| BS 5953:Part 1:1980* IEC 60606:1978 | Guide on power transformers. Application of power transformers |
| BS 638:Part 1:1979 | Arc welding power sources, equipment and accessories. Specification for oil cooled power sources for manual, semi-automatic and automatic metal-arc welding and for TIG welding |
| BS 6436:1984 | Specification for ground mounted distribution transformers for cable box or unit substation connection |
| BS 6553:1984* IEC 60787:1983 | Guide for selection of fuse links of high-voltage fuses for transformer circuit applications |
| BS 6554-1:1984* IEC 60740:1982 | Laminations for transformers and inductors for use in telecommunication and electronic equipment. Specification for dimensions, mechanical characteristics and electrical testing |
| BS 6600-10:1985 | Outline dimensions of transformers and inductors for use in telecommunication and electronic equipment. Specification for the outline dimensions of transformers and inductors using the Q range of C-cores |
| BS 6600-1:1987 | Outline dimensions of transformers and inductors for use in telecommunication and electronic equipment. Specification for the outline dimensions of transformers and inductors using YEI-1 laminations |
| BS 7125:1989* ISO 5826-1983 | Specification for transformers for resistance welding machines |
| BS 7452:1991* IEC 60989:1991 | Specification for separating transformers, autotransformers, variable transformers and reactors |
| BS 7565:1992* IEC 60310:1991 | Specification for traction transformers and inductors |
| BS 7616:1993 | Specification for bushings for liquid filled transformers above 1 kV and up to 36 kV |
| BS 7625:1993 | Specification for voltage transformers |
| BS 7626:1993 | Specification for current transformers |
| BS 7682:1993 | Specification for stationary transformers in traction systems |
| BS 7729:1994 | Specification for instrument transformers. Three-phase voltage transformers for voltage levels having Um up to 52 kV |
| BS 7735:1994* IEC 60354:1991 | Guide to loading of oil-immersed power transformers |
| BS 7806:1995 | Dry-type power transformers |
| BS 7821-1:1995 | Three phase oil-immersed distribution transformers, 50 Hz, from 50 to 2500 kVA with highest voltage for equipment not exceeding 36 kV. General requirements and requirements for transformers with highest voltage for equipment not exceeding 24 kV |
| BS 7821-2.1:1995 | Three phase oil-immersed distribution transformers, 50 Hz, from 50 to 2500 kVA with highest voltage for equipment not exceeding 36 kV. Distribution transformers with cable boxes on the high voltage and/or low voltage side. General requirements |
| BS 7821-2.2:1998 | Three phase oil-immersed distribution transformers, 50 Hz, from 50 to 2500 kVA with highest voltage for equipment not exceeding 36 kV. Distribution transformers with cable boxes on the high voltage and/or low voltage side. Cable boxes of type 1 for use on distribution transformers meeting the requirements of BS 7821-2. 1 |
| BS 7821-2.3:1998 | Three phase oil-immersed distribution transformers, 50 Hz, from 50 to 2500 kVA with highest voltage for equipment not exceeding 36 kV. Distribution transformers with cable boxes on the high voltage and/or low voltage side. Cable boxes type 2 for use on distribution transformers meeting the requirements of BS 7821-2.1 |
| BS 7821-3:1995 | Three phase oil-immersed distribution transformers, 50 Hz, from 50 to 2500 kVA with highest voltage for equipment not exceeding 36 kV. Supplementary requirements for transformers with highest voltage for equipment equal to 36 kV |
| BS 7821-4:1995 | Three phase oil-immersed distribution transformers, 50 Hz, from 50 to 2500 kVA with highest voltage for equipment not exceeding 36 kV. Determination of the power rating of a transformer loaded with non-sinusoidal currents |
| BS 7821-6:2002* HD 428-6 S1:2002 | Three phase oil-immersed distribution transformers, 50 Hz, from 50 to 2500 kVA with highest voltage for equipment not exceeding 36 kV. Requirements and tests concerning pressurized corrugated tanks |
| BS 7844-1:1996 | Three-phase dry-type distribution transformers 50 Hz, from 100 to 2500 kVA with highest voltage for equipment not exceeding 36 kV. General requirements and requirements for transformers with highest voltage for equipment not exceeding 24 kV |
| BS 7844-2:1996 | Three-phase dry-type distribution transformers 50 Hz, from 100 to 2500 kVA with highest voltage for equipment not exceeding 36 kV. Supplementary requirements for transformers with highest voltage for equipment equal to 36 kV |
| BS 7844-3:1998 | Three-phase dry-type distribution transformers 50 Hz, from 100 to 2500 kVA with highest voltage for equipment not exceeding 36 kV. Determination of the power rating of a transformer loaded with non-sinusoidal current |
| BS 7866:1996 | Bushings up to 1 kV and from 250 A to 5 kA, for liquid filled transformers |
| BS 7877:1999 | Busbar bushings up to 1 kV and from 1,25 kA to 5 kA, for liquid filled transformers |
| BS 9720:1989 | Specification for custom-built transformers and inductors of assessed quality: generic data and methods of test |
| BS 9721:1985 | Sectional specification for signal transformers of assessed quality for use in electronic equipment for capability approval |
| BS 9727:1985 | Sectional specification for power transformers of assessed quality for use in electronic equipment for capability approval |
| BS 9733:1985 | Sectional specification for pulse transformers of assessed quality for use in electronic equipment for capability approval |
| BS 9734:1978 | Sectional specification for pulse transformers of assessed quality for use in electronic equipment: full assessment level |
| BS 9741:1986 | Sectional specification for inductors of assessed quality for use in electronic equipment for capability approval |
| BS EN 138000:1997 | Harmonized system of quality assessment for electronic components. Generic specification: fixed inductors for electromagnetic interference suppression (inductors for which safety tests are required) |
| BS EN 138100:1997 | Harmonized system of quality assessment for electronic components. Sectional specification: fixed inductors for electromagnetic interference suppression (inductors for which safety tests are required) |
| BS EN 138101:1997 | Harmonized system of quality assessment for electronic components. Blank detail specification: fixed inductors for electromagnetic interference suppression (inductors for which safety tests are required). Assessment level D |
| BS EN 50152-3-2:2001 | Railway applications. Fixed installations. Particular requirements for a.c. switchgear. Measurement, control and protection devices for specific use in a.c. traction systems. Single-phase current transformers. Single-phase current transformers |
| BS EN 50152-3-3:2001 | Railway applications. Fixed installations. Particular requirements for a.c. switchgear. Measurement, control and protection devices for specific use in a.c. traction systems. Single-phase inductive voltage transformers. Single-phase voltage transformers |
| BS EN 50195:1997 | Code of practice for the safe use of fully enclosed askarel-filled electrical equipment |
| BS EN 50216-1:2002 | Power transformers and reactor fittings. General |
| BS EN 50216-2:2002 | Power transformers and reactor fittings. Gas and oil actuated relay for liquid immersed transformers and reactors with conservator |
| BS EN 50216-3:2002 | Power Transformer and reactor fittings. Protective relay for hermetically sealed liquid-immersed transformers and reactors without gaseous cushion |
| BS EN 50216-4:2002 | Power transformers and reactor fittings. Basic accessories (earthing terminal, drain and filling devices, thermometer pocket, wheel assembly) |
| BS EN 50216-5:2002 | Power transformer and reactor fittings. Liquid level, pressure and flow indicators, pressure relief devices and dehydrating breathers |
| BS EN 50216-6:2002 | Power transformers and reactor fittings. Cooling equipment. Removable radiators for oil-immersed transformers |
| BS EN 50216-7:2002 | Power transformers and reactor fittings. Electric pumps for transformer oil |
| BS EN 50216-8:2005 | Power transformer and reactor fittings. Butterfly valves for insulating liquid circuits |
| BS EN 50225:1997 | Code of practice for the safe use of fully enclosed oil-filled electrical equipment which may be contaminated with PCBs |
| BS EN 50243:2002 | Outdoor bushings for 24 kV and 36 kV and for 5 kA and 8 kA, for liquid filled transformers |
| BS EN 50299:2002 | Oil-immersed cable connection assemblies for transformers and reactors having highest voltage for equipment Um from 72,5 kV to 550 kV |
| BS EN 50329:2003 | Railway applications. Fixed installations. Traction transformers |
| BS EN 50336:2002 | Bushings for transformers and reactor cable boxes not exceeding 36 kV |
| BS EN 50386:2002 | Bushings up to 1 kV and from 250 A to 5 kA, for liquid filled transformers |
| BS EN 50387:2002 | Busbar bushings up to 1 kV and from 1,25 kA to 5 kA, for liquid filled transformers |
| BS EN 50464-1:2007 | Three-phase oil-immersed distribution transformers 50 Hz, from 50 kVA to 2500 kVA with highest voltage for equipment not exceeding 36 kV. General requirements |
| BS EN 50464-2-1:2007 | Three-phase oil-immersed distribution transformers 50 Hz, from 50 kVA to 2500 kVA with highest voltage for equipment not exceeding 36 kV. Distribution transformers with cable boxes on the high-voltage and/or low-voltage side. General requirements |
| BS EN 50464-2-2:2007 | Three-phase oil-immersed distribution transformers 50 Hz, from 50 kVA to 2 500 kVA with highest voltage for equipment not exceeding 36 kV. Distribution transformers with cable boxes on the high-voltage and/or low-voltage side. Cable boxes type 1 for use on distribution transformers meeting the requirements of EN 50464-2-1 |
| BS EN 50464-2-3:2007 | Three-phase oil-immersed distribution transformers 50 Hz, from 50 kVA to 2500 kVA with highest voltage for equipment not exceeding 36 kV. Distribution transformers with cable boxes on the high-voltage and/or low-voltage side. Cable boxes type 2 for use on distribution transformers meeting the requirements of EN 50464-2-1 |
| BS EN 50464-3:2007 | Three-phase oil-immersed distribution transformers 50 Hz, from 50 kVA to 2500 kVA with highest voltage for equipment not exceeding 36 kV. Determination of the power rating of a transformer loaded with non-sinusoidal currents |
| BS EN 50464-4:2007 | Three-phase oil-immersed distribution transformers 50 Hz, from 50 kVA to 2500 kVA with highest voltage for equipment not exceeding 36 kV. Requirements and tests concerning pressurised corrugated tanks |
| BS EN 60044-1:1999* IEC 60044-1:1996 | Instrument transformers. Current transformers |
| BS EN 60044-2:1999* IEC 60044-2:1997 | Instrument transformers. Inductive voltage transformers |
| BS EN 60044-3:2003 | Instrument transformers. Combined transformers |
| BS EN 60044-6:1999* IEC 60044-6:1992 | Instrument transformers. Requirements for protective current transformers for transient performance |
| BS EN 60044-7:2000* IEC 60044-7:1999 | Instrument transformers. Electronic voltage transformers |
| BS EN 60076-10:2001* IEC 60076-10:2001 | Power transformers. Determination of sound levels |
| BS EN 60076-11:2004 | Power transformers. Dry-type transformers |
| BS EN 60076-13:2006 | Power transformers. Self-protected liquid-filled transformers |
| BS EN 60076-1:1997 | Power transformers. General |
| BS EN 60076-2:1997 | Power transformers. Temperature rise |
| BS EN 60076-3:2001 | Power transformers. Insulation levels, dielectric tests and external clearances in air |
| BS EN 60076-4:2002 | Power transformers. Guide to the lightning impulse and switching impulse testing. Power transformers and reactors |
| BS EN 60076-5:2001* IEC 60076-5:2000 | Power transformers. Ability to withstand short circuit |
| BS EN 60076-5:2006 | Power transformers. Ability to withstand short-circuit |
| BS EN 60146-1-3:1993* IEC 60146-1-3:1991 | Semiconductor convertors. General requirements and line commutated convertors. Transformers and reactors |
| BS EN 60214-1:2003 | Tap-changers. Performance requirements and test methods |
| BS EN 60289:1995 | Reactors |
| BS EN 60296:2004 | Fluids for electrotechnical applications. Unused mineral insulating oils for transformers and switchgear |
| BS EN 60310:1997 | Railway applications. Traction transformers and inductors on rolling stock |
| BS EN 60310:2004 | Railway applications. Traction transformers and inductors on board rolling stock |
| BS EN 60551:1993 | Determination of transformer and reactor sound levels |
| BS EN 60599:1999* IEC 60599:1999 | Mineral oil-impregnated electrical equipment in service. Guide to the interpretation of dissolved and free gases analysis |
| BS EN 60726:2003 | Dry-type power transformers |
| BS EN 60742:1996* BS 3535-1:1996 | Isolating transformers and safety isolating transformers. Requirements |
| BS EN 60852-4:1997* IEC 60852-4:1996 | Outline dimensions of transformers and inductors for use in telecommunication and electronic equipment. Transformers and inductors using YUI-2 laminations |
| BS EN 60938-1:2000* IEC 60938-1:1999 | Fixed inductors for electromagnetic interference suppression. Generic specification |
| BS EN 60938-2-1:2000* IEC 60938-2-1:1999 | Fixed inductors for electromagnetic interference suppression. Blank detail specification. Inductors for which safety tests are required. Assessment level D. Blank detail specification: Fixed inductors for electromagnetic interference suppression for which electrical shock hazard protection tests are required. Assessment level D |
| BS EN 60938-2-2:2000* IEC 60938-2-2:1999 | Fixed inductors for electromagnetic interference suppression. Blank detail specification. Inductors for which safety tests are required (only). Blank detail specification - Fixed inductors for electromagnetic interference suppression for which electrical shock hazard protection tests are required (only) |
| BS EN 60938-2:2000* IEC 60938-2:1999 | Fixed inductors for electromagnetic interference suppression. Sectional specification |
| BS EN 61007:1997 | Transformers and inductors for use in electronic and telecommunication equipment. Measuring methods and test procedures |
| BS EN 61021-1:1997* IEC 61021-1:1990 | Laminated core packages for transformers and inductors for use in telecommunication and electronic equipment. Specification for dimensions |
| BS EN 61021-2:1997* IEC 61021-2:1995 | Laminated core packages for transformers and inductors for use in telecommunication and electronic equipment. Electrical characteristics for cores using YEE 2 laminations |
| BS EN 61050:1992 | Specification for transformers for tubular discharge lamps having a no-load output voltage exceeding 1000 V (generally called neon-transformers). General and safety requirements |
| BS EN 61181:2007 | Mineral oil-filled electrical equipment. Application of dissolved gas analysis (DGA) to factory tests on electrical equipment |
| BS EN 61248-1:1997* IEC 61248-1:1996 | Transformers and inductors for use in electronic and telecommunication equipment. Generic specification |
| BS EN 61248-2:1997* IEC 61248-2:1996 | Transformers and inductors for use in electronic and telecommunication equipment. Sectional specification for signal transformers on the basis of the capability approval procedure |
| BS EN 61248-3:1997* IEC 61248-3:1996 | Transformers and inductors for use in electronic and telecommunication equipment. Sectional specification for power transformers on the basis of the capability approval procedure |
| BS EN 61248-4:1997* IEC 61248-4:1996 | Transformers and inductors for use in electronic and telecommunication equipment. Sectional specification for power transformers for switched mode power supplies (SMPS) on the basis of the capability approval procedure |
| BS EN 61248-5:1997* IEC 61248-5:1996 | Transformers and inductors for use in electronic and telecommunication equipment. Sectional specification for pulse transformers on the basis of the capability approval procedure |
| BS EN 61248-6:1997* IEC 61248-6:1996 | Transformers and inductors for use in electronic and telecommunication equipment. Sectional specification for inductors on the basis of the capability approval procedure |
| BS EN 61248-7:1998* IEC 61248-7:1997 | Transformers and inductors for use in electronic and telecommunication equipment. Sectional specification for high-frequency inductors and intermediate transformers on the basis of the capability approval procedure |
| BS EN 61378-1:1999 | Convertor transformers. Transformers for industrial applications |
| BS EN 61378-2:2001* IEC 61378-2:2001 | Convertor transformers. Transformers for HVDC applications |
| BS EN 61558-1:1998 | Safety of power transformers, power supply units and similar. General requirements and tests |
| BS EN 61558-1:2005 | Safety of power transformers, power supplies, reactors and similar products. General requirements and tests |
| BS EN 61558-2-12:2001 | Safety of power transformers, power supply units and similar. Particular requirements for constant voltage transformers. Particular requirements for constant voltage transformers |
| BS EN 61558-2-13:2000* IEC 61558-2-13:1999 | Safety of power transformers, power supply units and similar. Particular requirements for auto-transformers for general use. Particular rquirements - auto-transformers |
| BS EN 61558-2-15:2001 | Safety of power transformers, power supply units and similar. Particular requirements for isolating transformers for the supply of medical locations |
| BS EN 61558-2-17:1998* IEC 61558-2-17:1997 | Safety of power transformers, power supply units and similar. Particular requirements for transformers for switch mode power supplies |
| BS EN 61558-2-19:2001* IEC EN 61558-2-19:2000 | Safety of power transformers, power supply units and similar. Particular requirements for perturbation attenuation transformers. Part 2-19: Particular requirement Mains-born perturbatiion attenuation transformers |
| BS EN 61558-2-1:1998* IEC 61558-2-1:1997 | Safety of power transformers, power supply units and similar. Particular requirements for separating transformers for general use |
| BS EN 61558-2-1:2007 | Safety of power transformers, power supplies, reactors and similar products. Particular requirements and tests for separating transformers and power supplies incorporating separating transformers for general applications |
| BS EN 61558-2-20:2001* IEC 61558-2-20:2000 | Safety of power transformers, power supply units and similar. Particular requirements for small reactors. Part 2-20: Particular requirements for small reactors |
| BS EN 61558-2-23:2001* IEC 61558-2-23:2000 | Safety of power transformers, power supply units and similar. Particular requirements for transformers for construction sites |
| BS EN 61558-2-2:1998* IEC 61558-2-2:1997 | Safety of power transformers, power supply units and similar. Particular requirements for control transformers |
| BS EN 61558-2-2:2007 | Safety of power transformers, power supplies, reactors and similar products. Particular requirements and tests for control transformers and power supplies incorporating control transformers |
| BS EN 61558-2-3:2000* IEC 61558-2-3:1999 | Safety of power transformers, power supply units and similar. Particular requirements for ignition transformers for gas and oil burners. Ignition transformers for gas and oil burners |
| BS EN 61558-2-4:1998* IEC 61558-2-4:1997 | Safety of power transformers, power supply units and similar. Particular requirements for isolating transformers for general use |
| BS EN 61558-2-5:1998* IEC 61558-2-5:1997 | Safety of power transformers, power supply units and similar. Particular requirements for shaver transformers and shaver supply units |
| BS EN 61558-2-6:1998* IEC 61558-2-6:1997 | Safety of power transformers, power supply units and similar. Particular requirements for safety isolating transformers for general use |
| BS EN 61558-2-7:1998 | Safety of power transformers, power supply units and similar. Particular requirements for transformers for toys |
| BS EN 61558-2-7:2007 | Safety of power transformers, power supplies, reactors and similar products. Particular requirements and tests for transformers and power supplies for toys |
| BS EN 61558-2-8:1999* IEC 61558-2-8:1998 | Safety of power transformers, power supply units and similar. Particular requirements for bell and chime transformers |
| BS EN 61558-2-9:2003 | Safety of power transformers, power supply units and similar products. Particular requirements for transformers for class III handlamps for tungsten filament lamps |
| BS EN 61596:1997* IEC 61596:1995 | Magnetic oxide EP-cores and associated parts for use in inductors and transformers. Dimensions |
| BS EN 61605:1997* IEC 61605:1996 | Fixed inductors for use in electronic and telecommunication equipment. Marking codes |
| BS EN 62041:2003 | Power transformers, power supply units, reactors and similar products. EMC requirements |
| BS EN ISO 22829:2008 | Resistance welding. Transformer-rectifier for welding guns with integrated transformers. Transformer- rectifier units operating at 1000 Hz frequency |
| BS EN ISO 5826:2003 | Resistance welding equipment. Transformers. General specifications applicable to all transformers |
| BS IEC 60076-8:1997* IEC 60076-8:1997 | Power transformers. Application guide |
| BS IEC 60092-303:1980 | Electrical installation in ships. Equipment. Transformers for power and lighting |
| CP 2012-1:1974 | Code of practice for foundations for machinery. Foundations for reciprocating machines |
| DD IEC/PAS 60044-5:2002 | Instrument transformers. Capacitor voltage transformers |
