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Transformers & reactors

Parent Category: Electrical engineering

Standards in development (247)
Published standards (192)
Committees (24)

Standards in development (247)

Standard Title	Status
BS EN 12699 Execution of special geotechnical work - Displacement piles	Public Comment
BS EN 140101-806:2008/AA low power film resistors - Metal film resistors on high grade ceramic, conformal coated or molded, axial or preformed leads	Approval
BS EN 140401-801:2007/AA low power film SMD resistors - Rectangular - Stability classes 0,1; 0,25; 0,5; 1	Approval
BS EN 140401-802:2007/A Detail specification: Fixed low power film SMD resistors - Rectangular - Stability classes 1; 2	Approval
BS EN 140401-803:2007/AB Detail specification: Fixed low power film SMD resistors - Cylindrical - Stability classes 0,05; 0,1; 0,25; 0,5; 1; 2	Publication
BS EN 140401-804:2011/AA low power film high stability SMD resistors - Rectangular - Stability classes 0,1; 0,25	Approval
BS EN 140402 Blank Detail Specification: Fixed low power wirewound surface mount (SMD) resistors	Idea
BS EN 140402-801 Detail specification: Fixed low power wirewound surface mount (SMD) resistors - Rectangular - Stability classes 0,5; 1; 2	Idea
BS EN 14199 Execution of special geotechnical work - Micropiles	Public Comment
BS EN 1537 Execution of special geotechnical works - Ground anchors	Approval
BS EN 1997-1:2004/A1 Eurocode 7: Geotechnical design Part 1: General rules	Approval
BS EN 343:2003/A1 Protective clothing - Protection against rain	Approval
BS EN 50085-1:2005/PRAA Cable trunking systems and cable ducting systems for electrical installations Part 1: General requirements	Approval
BS EN 50121-1 Railway applications - Electromagnetic compatibility (EMC) Part 1: General	Accepted
BS EN 50121-2 Railway applications - Electromagnetic compatibility (EMC) Part 2: Emission of the whole railway system to the outside world	Accepted
BS EN 50121-3-1 Railway applications - Electromagnetic compatibility (EMC) Part 3-1: Rolling stock - Train and complete vehicle	Accepted
BS EN 50121-3-2 Railway applications - Electromagnetic compatibility (EMC) Part 3-2: Rolling stock - Rolling stock apparatus	Accepted
BS EN 50121-4 Railway applications - Electromagnetic compatibility (EMC) Part 4: Emission and immunity of the signalling and telecommunications apparatus	Accepted
BS EN 50121-5 Railway applications - Electromagnetic compatibility (EMC) Part 5: Emission and immunity of fixed power supply installations and apparatus	Accepted
BS EN 50123-3:2003/AA installations - D.C. switchgear Part 3: Indoor d.c. disconnectors, switch-disconnectors and earthing switches	Approval
BS EN 50123-4:2003/AA installations - D.C. switchgear Part 4: Outdoor d.c. disconnectors, switch-disconnectors and earthing switches	Approval
BS EN 50123-6:2003/AAMD 1 Railway applications - Fixed installations - D.C. switchgear Part 6: D.C. switchgear assemblies	Public Comment
BS EN 50125-1 Railway applications - Environmental conditions for equipment Part 1: Equipment on board rolling stock	Public Comment
BS EN 50126-1 Railway applications - The specification and demonstration of Reliabilit y, Availability, Maintainability and Safety (RAMS) Part 1: Generic RAMS process	Public Comment
BS EN 50126-2 Railway applications The specification and Demonstration of Reliability, Availability, Maintainability and Safety (RAMS) Part 2: Systems Approach to Safety	Public Comment
BS EN 50126-4 Railway applications The specification and Demonstration of Reliability, Availability, Maintainability and Safety (RAMS) Part 4: Functional Safety - Electric and electronic systems	Public Comment
BS EN 50126-5 Railway applications The specification and Demonstration of Reliability, Availability, Maintainability and Safety (RAMS) Part 5: Functional Safety - Software	Public Comment
BS EN 50152-1:2012/AA installations - Particular requirements for alternating current switchgear Part 1: Circuit-breakers with nominal voltage above 1 kV	Approval
BS EN 50153 Railway applications - Rolling stock - Protective provisions relating to electrical hazards	Public Comment
BS EN 50155 Railway applications - Electronic equipment used on rolling stock	Idea
BS EN 50171 Central safety power supply systems	Public Comment
BS EN 50216-4 Power transformer and reactor fittings Part 4:Basic accessories (earthing terminal, drain and filling devices, thermometer pocket, wheel assembly, pressure relief device, dehydrating breather	Accepted
BS EN 50299-1 Oil-immersed cable connection assemblies for transformers and reactors having highest voltage for equipment Um from 72,5 kV to 550 kV Part 1: Fluid-filled cable terminations	Public Comment
BS EN 50299-2 Oil-immersed cable connection assemblies for transformers and reactors having highest voltage for equipment Um from 72,5 kV to 550 kV Part 2: Dry-type cable terminations	Public Comment
BS EN 50343 Railway applications - Rolling stock - Rules for installation of cabling	Public Comment
BS EN 50386:2010/AA+A1 to 5 kA, for liquid filled transformers	Approval
BS EN 50405 Railway applications - Current collection systems - Pantographs, testing methods for contact strips	Idea
BS EN 50502 Railway applications - Rolling stock - Electric equipment in trolley buses - Safety requirements and connection systems	Idea
BS EN 50526-2 Railway Applications - Fixed Installations - D.C. surge arresters and voltage limiting devices Part 2: Voltage limiting devices	Public Comment
BS EN 50526-3 Railway Applications - Fixed Installations - D.C. surge arresters and voltage limiting devices Part 3: Application guide	Idea
BS EN 50541-2 Three phase dry-type distribution transformers 50 Hz, from 100 to 3 150 kVA, with highest voltage for equipment not exceeding 36 kV Part 2: Determination of the power rating of a transformer loaded with non-sinusoidal current	Approval
BS EN 50547:2013/Cor1 Railway applications - Batteries for auxiliary power supply systems	Publication
BS EN 50598-1 Ecodesign for power drive systems, motor starters, power electronics and their driven applications - Part 1: Procedure for setting energy efficiency requirements of motor driven applications by using the extended product approach and semi -analytic models	Accepted
BS EN 50598-2 motor starters, power electronics and their driven applications - Part 2: Energy efficiency for power drive systems and motor starters	Accepted
BS EN 50598-3 motor starters, power electronics and their driven applications - Part 3: Environmental aspects and product declaration for power drive systems and motor starters	Idea
BS EN 50XXX Railway applications - Fixed installations - Protection principles for electric traction systems	Idea
BS EN 50XXX- SIMULATION Railway applications - Fixed installations - Simulation tool for the validation of the design of power supply systems	Idea
BS EN 60034-18-41 ED 1.0 TS ED.2 Rotating electrical machines Part 18-41: Qualification and quality control tests for partial discharg e free (Type I) electrical insulation systems used in rotating electrical machines fed from voltage converters	Public Comment
BS EN 60034-18-42 Rotating electrical machines Part 18-42: Qualification and acceptance tests for partial discharge resistant electrical insulation systems (Type II) used in rotating electrical machines fed from voltage converters	Accepted
BS EN 60034-19 Ed 2.0 Rotating electrical machines Part 19: Specific test methods for d.c. machines operating on rectifier-fed power supplies or other d.c. sources	Accepted
BS EN 60034-2-1 ED 2.0 Rotating electrical machines - Part 2-1: Standard methods for determining losses and efficiency from tests (excluding machines for traction vehicles)	Public Comment
BS EN 60034-2-3 ED 1.0 Rotating electrical machines Part 2-3: Specific test methods for determining losses and efficiency of converter-fed AC motors	Approval
BS EN 60034-23 ED 1.0 Rotating electrical machines Part 23: Specification for the refurbishment of rotating electrical machines	Accepted
BS EN 60034-28 Rotating electrical machines Part 28: Test methods for determining quantities of equivalent circuit diagrams for three-phase low-voltage cage induction motors	Approval
BS EN 60034-30-1 Rotating electrical machines Part 30-1: Efficiency classes of single-speed, three-phase, cage- induction motors (IE-code)	Public Comment
BS EN 60034-8 A1 Ed. 3 Rotating electrical machines - Part 8 Terminal markings and direction of rotation	Public Comment
BS EN 60050-131+A2 Amendment 2 : International Electrotechnical Vocabulary Part 131: Circuit theory (Proposed horizontal standard)	Approval
BS EN 60050-151+A1 Amendment 1 : International Electrotechnical Vocabulary Part 151: Electrical and magnetic devices (Proposed horizontal standard)	Approval
BS EN 60050-651 International Electrotechnical Vocabulary Part 651: Live working	Technical Review
BS EN 60076-10 ED 2.0 Power transformers Part 10: Determination of sound levels	Public Comment
BS EN 60076-14 ED 1.0 Power transformers Part 14: Liquid-immersed power transformers using high-temperature insulation materials	Approval
BS EN 60076-3 ED 3.0 Power transformers Part 3: Insulation levels, dielectric tests and external clearances in a ir	Approval
BS EN 60092-100-1 Electrical installations in ships Part 100-1: General - System design; general requirements and tests	Accepted
BS EN 60092-100-2 Electrical installations in ships Part 100-2: General - Power supply and distribution; additional requirements	Accepted
BS EN 60092-100-3 Electrical installations in ships Part 100-3: General - Control and Automation	Accepted
BS EN 60092-100-4 Electrical installations in ships Part 100-4: General - Equipment; additional requirements	Accepted
BS EN 60092-201 Electrical installations in ships - Part 201: System design - General, clause 14: Shore connections	Accepted
BS EN 60092-501 Electrical installations in ships – Part 501: Special features – Electric propulsion plant	Public Comment
BS EN 60092-502 ED 6.0 IEC 60092-502: Electrical installations in ships - Part 502: Tankers - Special features	Accepted
BS EN 60092-507 Electrical installations in ships Part 507: Small vessels	Approval
BS EN 60115-2 Fixed resistors for use in electronic equipment. Part 2: Sectional specification: Fixed low-power non-wirewound resistors	Public Comment
BS EN 60115-8-1 Fixed resistors for use in electronic equipment Part 8-1: Blank detail specification - Fixed chip resistors. Assessment level E	Public Comment
BS EN 60127-2 Miniature fuses - Part 2: Cartridge fuse-links	Accepted
BS EN 60127-3 Miniature fuses - Part 3: Sub-miniature fuse-links	Accepted
BS EN 60127-4:2005+A1:2009+A2 Miniature fuses - Part 4: Universal modular fuse-links (UMF) - Through-hole and surface mount types	Publication
BS EN 60127-6 Miniature fuses - Part 6: Fuse-holders for miniature fuse-links	Public Comment
BS EN 60127-7 Miniature fuses - Part 7: Miniature fuse-links for special applications	Publication
BS EN 60214-1 ED 2 Tap-changers - Part 1: Performance requirements and test methods	Public Comment
BS EN 60269-1:2007+A1:2009+A2 Low-voltage fuses - Part 1: General requirements	Accepted
BS EN 60269-6 ED 1.0/A1 Low-voltage fuses - Part 6: Supplementary requirements for fuse-links for the protection of solar photovoltaic energy systems	Public Comment
BS EN 60282-1 ED 7.0/A1:2009+A1 High-voltage fuses - Part1: Current-limiting fuses	Public Comment
BS EN 60286-2 Packaging of components for automatic handling Part 2: Tape packaging of components with unidirectional leads on continuous tapes	Accepted
BS EN 60286-3 Packaging of components for automatic handling - Part 3: Packaging of surface mount components on continuous tapes	Approval
BS EN 60286-4 ED 3.0 Packaging of components for automatic handling Part 4: Stick magazines for electronic components encapsulated in packages of form E and G	Approval
BS EN 60310 ED 4.0 Railway applications - Traction transformers and inductors on board rolling stock	Accepted
BS EN 60384-1 Fixed capacitors for use in electronic equipment - Part 1: Generic specification	Accepted
BS EN 60384-14 Fixed capacitors for use in electronic equipment - Part 14: Sectional specification: Fixed capacitors for electromagnetic interference suppression and connection to the supply mains	Approval
BS EN 60384-19 Fixed capacitors for use in electronic equipment - Part 19: Sectional specification: Fixed metallized polyethylene- terephthalate film dielectric surface mount d.c. capacitors	Accepted
BS EN 60384-20 Fixed capacitors for use in electronic equipment Part 20: Sectional specification - Fixed metallized polyphenylene sulfide film dielectric surface mount d.c. capacitors	Public Comment
BS EN 60384-23 Fixed capacitors for use in electronic equipment - Part 23: Sectional specification: Fixed surface mount metallized polyethylene naphthalate film dielectric d.c. capacitors	null
BS EN 60384-24 Fixed capacitors for use in electronic equipment Part 24: Sectional specification - Surface mount fixed tantalum electrolytic capacitors with conductive polymer solid electrolyte	Public Comment
BS EN 60384-25 Fixed capacitors for use in electronic equipment - Part 25: Sectional specification - Surface mount fixed aluminium electrolytic capacitors with conductive polymer solid electrolyte	Public Comment
BS EN 60384-8 Fixed capacitors for use in electronic equipment - Part 8: Sectional specification: Fixed capacitors of ceramic dielectric, Class1	Accepted
BS EN 60384-9 Fixed capacitors for use in electronic equipment - Part 9: Sectional specification: Fixed capacitors of ceramic dielectric, Class 2	Accepted
BS EN 60401-3 Terms and nomenclature for cores made of magnetically soft ferrites Part 3: Guidelines on the format of data appearing in manufacturers' catalogues of transformer and inductor cores	Accepted
BS EN 60424-1 Ferrite cores - Guidelines on the limits of surface irregularities Part 1: General Specification	Accepted
BS EN 60424-2 Ferrite cores - Guidelines on the limits of surface irregularities Part 2: RM-cores	Accepted
BS EN 60424-3 Ferrite cores - Guidelines on the limits of surface irregularities Part 3: ETD-cores, EER-cores, EC-cores and E-cores	Accepted
BS EN 60424-4 Ferrite cores - Guidelines on the limits of surface irregularities Part 4: Ring-cores	Accepted
BS EN 60507 Artificial pollution tests on high-voltage insulators to be used on a.c.systems	Public Comment
BS EN 60533 Ed 3.0 Electrical and electronic installations in ships - Electromagnetic compatibility	Public Comment
BS EN 60549 High-voltage fuses for the external protection of shunt capacitors	Publication
BS EN 60598-1 Luminaires - Part1 : General Requirements and tests	Public Comment
BS EN 60598-2-11 Luminaires - Part 2-1: Particular requirements - Aquarium luminaires	Publication
BS EN 60598-2-12 Luminaires - Part 2-12: Particular requirements - Mains socket-outlet mounted nightlights	Publication
BS EN 60598-2-20 ED 4.0 Luminaires - Part 2-20: Particular requirements - Lighting chains	Accepted
BS EN 60598-2-20 Luminaires - Part 2-20: Particular requirements - Lighting chains	Idea
BS EN 60598-2-21 Luminaires - Part 2-21: Particular requirements - Rope lights	Idea
BS EN 60598-2-22 Luminaires - Part 2-22: Particular requirements - Luminaires for emergency lighting	Public Comment
BS EN 60598-2-24 Luminaires - Part 2-24: Particular requirements - Luminaires with limited surface temperatures	Publication
BS EN 60598-2-5 Luminaires - Part 2- 5: Particular requirements - Floodlights	Idea
BS EN 60598-2-8 Luminaires - Part 2-8: Particular requirements - Handlamps	Publication
BS EN 60599 Mineral oil-impregnated electrical equipment in service - Guide to the interpretation of dissolved and free gases analysis	null
BS EN 60633 Am2 ED 2.0 Terminology for high-voltage direct current (HVDC) transmission	Idea
BS EN 60691 Thermal-links – Requirements and application guide	Accepted
BS EN 60700-1 Thyristor valves for high voltage direct current (HVDC) powertransmission - Part 1: Electrical testing	Idea
BS EN 60700-2 Ed1.0 High-voltage thyristor valves for high voltage direct current (HVDC)systems - Part 2: Terminology	null
BS EN 60836 Specifications for unused silicone insulating liquids for electrotechnical purposes	Public Comment
BS EN 60927 ED 1.0/A1:2007+A1 Auxiliaries for lamps - Starting devices (other than glow starters) - Performance requirements	Publication
BS EN 60929:2011+A1 AC and/or DC-supplied electronic control gear for tubular fluorescent lamps - Performance requirements	Idea
BS EN 60939-3 Passive filter units for electromagnetic interference suppression Part 3: Standard for passive filter units for which safety tests are appropriate	Accepted
BS EN 60940 Guidance information on the application of capacitors, resistors, inductors and complete filter units for radio interference suppression Part 8: Sectional specification: Fixed capacitors of ceramic dielectric, Class1	Accepted
BS EN 61045-1 Fixed film resistor networks for use in electronic equipment - Part 1 : Generic specification	Public Comment
BS EN 61048:2006+A1 Auxiliaries for lamps - Capacitors for use in tubular fluorescent and other discharge lamp circuits - General and safety requirements	Public Comment
BS EN 61204-3 Low-voltage power supplies, d.c. output - Part 3: Electromagnetic compatibility (EMC)	Approval
BS EN 61204-7 Ed 2.0 Low-voltage switch mode power supplies - Part 7: Safety requirements	Idea
BS EN 61287-1 ED 3.0 Railway applications - Power convertors installed on board rolling stock Part 1: Characteristics and test methods	Public Comment
BS EN 61347-1 ED 2.0/A3:2008+A3 Lamp controlgear - Part 1: General and safety requirements	Public Comment
BS EN 61347-1:2008 +A1:2011+A2 Lamp controlgear - Part 1: General and safety requirements	Publication
BS EN 61347-2-1:2001/Cor3:2010+A2 Lamp controlgear - Part 2-1:Particular requirements for starting devices (other than glow starters)	Approval
BS EN 61347-2-13 Lamp controlgear - Part 2-13: Particular requirements for d.c. or a.c. supplied electronic controlgear for LED modules	Approval
BS EN 61347-2-3:2011+A1 Lamp control gear - Part 2-3: Particular requirements for a.c. and/or d.c. supplied electronic control gear for fluorescent lamps	Idea
BS EN 61347-2-8 ED 1.0/A2 Lamp controlgear - Part 2-8: Particular requirements for ballasts for fluorescent lamps	Accepted
BS EN 61386-1 Conduit systems for cable management - Part 1: General requirements	Public Comment
BS EN 61534-1+A1 Powertrack systems Part 1: General requirements Amendment 1	Public Comment
BS EN 61534-22 Powertrack systems Part 22: Particular requirements for powertrack systems intended for on floor or under floor installation.	Accepted
BS EN 61558-2-10 ED 1.0 Safety for transformers, reactors, power supply units and combinations thereof Part 2-10: Particular requirements and tests for separating transformers with high insulation level and separating transformers with output voltages exceeding 1000 V	Public Comment
BS EN 61558-2-16 Ed 1.0 /A1 Amendment 1 - Safety of transformers; reactors; power supply units and combinations thereof Part 2-16: Particular requirements and tests for switch mode power supply units and transformers for switch mode power supply units	Approval
BS EN 61558-2-26 Safety of transformers; reactors; power supply units and combinations thereof Part 2-26: Particular requirements and tests for power supply unit for saving energy and similar purpose	Approval
BS EN 61800-2 Adjustable speed electrical power drive systems - Part 2: General requirements - Rating specifications for low voltage adj ustable frequency a.c. power drive systems	Accepted
BS EN 61800-3:2004+A1:2012+A2 Adjustable speed electrical power drive systems - Part 3: EMC requirements and specific test methods	null
BS EN 61800-5-1 Adjustable speed electrical power drive systems - Part 5-1: Safety requirements - Electrical, thermal and energy	Idea
BS EN 61800-5-2 Ed 2.0 Adjustable speed electrical power drive systems - Part 5-2: Safety requirements - Functional	Idea
BS EN 61800-7-1 Adjustable speed electrical power drive systems - Part 7-1: Generic interface and use of profiles for power drive systems - Interface definition	null
BS EN 61800-7-201 Adjustable speed electrical power drive systems - Part 7-201: Generic interface and use of profiles for power drive systems - Profile type 1 specification	null
BS EN 61800-7-202 Adjustable speed electrical power drive systems - Part 7-202: Generic interface and use of profiles for power drive systems - Profile type 2 specification	null
BS EN 61800-7-203 Adjustable speed electrical power drive systems - Part 7-203: Generic interface and use of profiles for power drive systems - Profile type 3 specification	null
BS EN 61800-7-204 Adjustable speed electrical power drive systems - Part 7-204: Generic interface and use of profiles for power drive systems - Profile type 4 specification	null
BS EN 61800-7-301 Adjustable speed electrical power drive systems - Part 7-301: Generic interface and use of profiles for power drive systems - Mapping of profile type 1 to network technologies	null
BS EN 61800-7-302 Adjustable speed electrical power drive systems - Part 7-302: Generic interface and use of profiles for power drive systems - Mapping of profile type 2 to network technologies	null
BS EN 61800-7-303 Adjustable speed electrical power drive systems - Part 7-303: Generic interface and use of profiles for power drive systems - Mapping of profile type 3 to network technologies	null
BS EN 61800-7-304 Adjustable speed electrical power drive systems - Part 7-304: Generic interface and use of profiles for power drive systems - Mapping of profile type 4 to network technologies	null
BS EN 61803:1999+A1:2010+ A2 Determination of power losses in high-voltage direct current (HVDC) converter stations	Idea
BS EN 61869-10 Instrument transformers Part 10: Additional requirements for low-power, stand-alone current sensors	Public Comment
BS EN 61869-4 ED 1.0 Instrument transformers Part 4 : Specific requirement for combined transformers	Public Comment
BS EN 61869-6 Instrument Transformers Part 6: Additional General Requirements for Low Power Instrument Transformers	Public Comment
BS EN 61869-9 Instrument Transformers Part 9: Digital Interface for Instrument Transformers	Public Comment
BS EN 61881-3/ AMD 1 Railway application – Rolling stock equipment – Capacitors for Power electronic Part 3: Electric double-layer capacitors	Approval
BS EN 61892-6 Mobile and fixed offshore units - Electrical installations - Part 6: Installation	Public Comment
BS EN 61892-7 Ed 3.0 Mobile and fixed offshore units - Electrical installations - Part 7: Hazardous areas	null
BS EN 61954:2011+A1 Static VAR compensators (SVC) - Testing of thyristor valves	Publication
BS EN 61975:2010+A1 High-voltage direct current (HVDC) installations - System tests	Idea
BS EN 62021-3 Insulating liquids - Determination of acidity - Part 3: Test methods for non mineral insulating oils	Public Comment
BS EN 62040-1 ED 1.0/A1:2008+A1 Uninterruptible power systems (UPS) - Part 1: General and safety requirements for UPS	Publication
BS EN 62040-4 Uninterruptible Power Systems (UPS) Part 4: Environmental aspects - requirements and reporting	Publication
BS EN 62041 Safety of transformers, reactors, power supply units and combinations thereof - EMC requirements	Accepted
BS EN 62231-1 Composite station post insulators for substations with ac voltages greater than 1 000 V up to 245 kV – Part 1: Dimensional, mechanical and electrical characteristics	Accepted
BS EN 62275 Cable management systems - Cable ties for electrical installations	Public Comment
BS EN 62290-1 Ed.2 Railway applications – Urban guided transport management and command/control systems Part 1: System principles and fundamental concepts	Accepted
BS EN 62290-2 Ed.2 Railway applications – Urban guided transport management and command/control systems Part 2: Functional requirements specification	Accepted
BS EN 62317-5 Ferrite cores - Dimensions Part 5: EP-cores and associated parts for use in inductors and transformers	Accepted
BS EN 62317-6 Ferrite cores - Dimensions Part 6: ETD-cores for use in power supplies	Accepted
BS EN 62386-101 Digital addressable lighting interface - Part 101: General requirements - System Components	Accepted
BS EN 62386-102 Digital addressable lighting interface - Part 102: General requirements - Control gear	Accepted
BS EN 62386-103 Digital addressable lighting interface - Part 103: General requirements - Control devices	Accepted
BS EN 62391-1 Fixed electric double-layer capacitors for use in electronic equipment - Part 1: Generic specification	Public Comment
BS EN 62442-2 ED1 Lamp controlgear - Part 2: Ballasts for fluorescent lamps - Energy coding system	Public Comment
BS EN 62442-3 Energy performance of lamp controlgear - Part 3: Controlgear for halogen lamps and LED modules - Method of measurement to determine the efficiency of the controlgear	Public Comment
BS EN 62444 Cable glands for electrical installations	Approval
BS EN 62477-2 Safety requirements for power semiconductor converter systems - Safety requirements for power semiconductor converter systems - Part 2: Power Electronic Converters from 1000 V a.c. or 1500 V d.c. up to 35 kV	Idea
BS EN 62501 ED 1.0/A1:2009+A1 Voltage sourced converter (VSC) valves for high-voltage direct current direct current(HVDC) power transmission - Electrical testing	Public Comment
BS EN 62609-1 Insulators for overhead lines - Composite line post insulators Part 1 - Definitions, End Fittings and Designations	null
BS EN 62625-1 ED 1.0 Electronic Railway Equipment On Board Driving Data Recording System Part 1: System Specification	Approval
BS EN 62689-1 Current and Voltage sensors or detectors, to be used for fault passage indication purposes Part 1: General principles and requirements	Public Comment
BS EN 62689-2 Current and Voltage sensors or detectors; to be used for fault passage indication purposes Part 2: General principles and requirements	Accepted
BS EN 62701 Reprocessed mineral insulating oils – Re-refined oils and reclaimed mineral insulating oils for transformers and switchgear	Public Comment
BS EN 62722-1 Luminaire performance - Part 1: General Requirements	Public Comment
BS EN 62722-2-1 Luminaire performance - Part 2-1: Particular requirements for LED luminaires	Public Comment
BS EN 62733 Programmable components in electronic lamp controlgear – Part 1: General and safety requirements	Accepted
BS EN 62747 Terminology for voltage-sourced converters (VSC) for HVDC systems	Public Comment
BS EN 62751-1 Determination of power losses in voltage sourced converters (VSC) for HVDC systems - Part 1: General requirements	Public Comment
BS EN 62751-2 Determination of power losses in voltage sourced converter (VSC) valves for HVDC systems - Part 2: Modular multilevel converters	Public Comment
BS EN 62756-1 Digital load line transmission lighting interface - Part 1:Basic requirements	Accepted
BS EN 62770 Specific Standard For Unused Natural Esters Liquids for Transformers andSimilar Electrical Equipment	Public Comment
BS EN 62772 Composite hollow core station post insulators for substations with a.c. and d.c.voltages greater than 1 000 V - Definitions, test methods and acceptance criteria	Idea
BS EN 62811 AC and/or DC-supplied electronic control gear for discharge lamps (excluding fluorescent lamps) - Performance requirements for low frequency squarewave operation	Accepted
BS EN 62812 Method of measurement of low resistance	null
BS EN 62813 Electrical characteristics test methods of lithium ion capacitors for use in electric and electronic equipment	Accepted
BS EN 62823 Thyristor valves for thyristor controlled series capacitors (TCSC) - Electrical testing	Accepted
BS EN 65700-19-03 Bushings for DC application	Public Comment
BS EN IEC 60940/A1 AMD 1 Guidance information on the application of capacitors, resistors, inductors and complete filter units for radio interference suppression	null
BS EN ISO 13688 Protective clothing - General requirements	Publication
BS EN ISO 5826 Resistance welding equipment - Transformers - General specifications applicable to all transformers	Public Comment
BS ENISO 12996 Mechanical joining - Tensile shear testing of single joint specimens - Specimen dimensions and test procedure	Approval
BS ENISO 14554-1 Quality requirements for welding - Resistance welding of metallic materials Part 1: Comprehensive quality requirements	Approval
BS ENISO 14554-2 Quality requirements for welding - Resistance welding of metallic materials Part 2: Elementary quality requirements	Approval
BS ENISO 27508 Resistance spot welding — weld bonding of coated and uncoated sheet materials	Idea
BS ENISO 669 Resistance welding - Resistance welding equipment - Mechanical and electrical requirements	Public Comment
BS ENISO 9312 Resistance welding equipment - Insulated pins for use in electrode back-ups	Approval
BS HD 60269-2 Low-voltage fuses - Part 2: Supplementary requirements for fuses for use by authorised perso ns (fuses mainly for industrial application) - Examples of standardized systems of fuses A to M.	Publication
BS HD 60269-3:2010+A1 Low-voltage fuses - Part 3:Supplementary requirements for fuses for use by unskilled persons (fuses mainly for household or similar application) - Examples of standardized systems of fuses A to F	Publication
BS IEC 60034-25 ED 1.0 Rotating electrical machines Part 25: A.C. Motors when used in power drive systems - Application guid e	Accepted
BS IEC 60076-15 Power transformers - Part 15: Gas-filled power transformer	Public Comment
BS IEC 60092-506 Electrical installations in ships – Part 506: Special features – Ships carrying specific dangerous goods andmaterials hazardous only in bulk	Accepted
BS IEC 60393-2 Potentiometers for use in electronic equipment. Part 2: Sectional specification: Lead-screw actuated and rotary preset potentiometers	Public Comment
BS IEC 60393-5 Potentiometers for use in electronic equipment. Part 5: Sectional specification - Single-turn rotary low-power wirewound and non-wirewound potentiometers	Public Comment
BS IEC 60393-6 Potentiometers for use in electronic equipment. Part 6: Sectional specification - Surface mount preset potentiometers	Public Comment
BS IEC 60494-2 ED 2.0 Railway applications - Rolling stock - Pantographs: Characteristics and tests - Part 2: Pantographs for metros and light rail vehicles	Approval
BS IEC 61534-21 ED 2.0 POWERTRACK SYSTEMS – Part 21: Particular requirements for powertrack systems intended for wall and ceiling mounting	Public Comment
BS ISO 13469 Mechanical joining - Form-fit blind rivets and (lock) bolt joints - Specifications and qualification of testing procedures	Accepted
BS ISO 16237 Mechanical joining - Destructive testing of joints - Specimen dimensions and test procedure for cross-tension testing of single joints	Accepted
BS ISO 18278-1 Resistance welding - Weldability Part 1: Assessment of weldability for resistance spot, seam and projection welding of metallic materials	Accepted
BS ISO 18278-2 Resistance welding - Weldability Part 2: Alternative procedures for the assessment of sheet steels for spot welding	Accepted
BS NA to EN 1997-1 UK National Annex to Eurocode 7 Geotechnical design - General rules	Idea
PD CLC/TR 50542 Railway applications - Communication means between safety equipment and man-machine interfaces (MMI)	Idea
PD CLC/TR 50610 Railway applications - Functional interface specification - Trainmodes	Idea
PD CLC/TR 50XXX Railway applications - Functional Interface Specification - Door System	Idea
PD CLC/TR 50XXX Railway applications - Functional Interface Specification - Pantograph System	Idea
PD CLC/TR 50XXX Railway applications - Specification for reversible direct current substations	Idea
PD CLC/TR 60269-5:2011+A1 Low voltage fuses - Part 5: Guidance for the application of low-voltage fuses	Public Comment
PD CLC/TS 50546 Railway applications - Shore (external) supply system for rail vehicles	Publication
PD CLC/TS 50591 Specification and verification of energy consumption for railway rolling stock	Approval
PD IEC/TR 60919-2 Am 1 ED 2.0 Performance of high-voltage direct current (HVDC) systems with line-commutated converters - Part 2: Faults and switching	Idea
PD IEC/TR 62001 Ed 1.0/A1 High-voltage direct current (HVDC) systems - Guidebook to the specification and design evaluation of A.C. filters	Idea
PD IEC/TR 62543:2011+A1 High-voltage direct current (HVDC) transmission using voltage sourced converters (VSC)	Publication
PD IEC/TR 62655 Tutorial and application guide for high-voltage fuses	Publication
PD IEC/TR 62681 Electromagnetic Environment Criterion for High-voltage Direct Current (HVDC) Overhead Transmission Lines	Approval
PD IEC/TR 62757 Ed 1.0 Power electronics for electrical transmission and distribution systems	Accepted
PD IEC/TR 62854 Sharp edge testing apparatus and test procedure for lighting equipment	Publication
PD IEC/TR 62874 Guide to the interpretation of carbon dioxide and 2- furfuraldehyde as markers of paper thermal degradation in insulating mineral oil	null
PD IEC/TS 60034-27-3 ED 1.0 Rotating electrical machines Part 27-3: Dielectric dissipation factor measurement on stator winding insulation of rotating electrical machines	Accepted
PD IEC/TS 60034-32 Rotating electrical machines - Part 32: Measurement of stator end winding vibration at form wound windings	Idea
PD IEC/TS 60815-4 ED 1.0 Selection and dimensioning of high-voltage insulators intended for usein polluted conditions - Part 4: Insulators for d.c. systems	Idea
PD IEC/TS 62578 Power electronics systems and equipment - Operation conditions and characteristics of active infeed converter applicationsincluding recommendations for emission limits below 150 kHz.	Approval
PD IEC/TS 62672 Reliability and availability evaluation of HVDC systems	null
PD IEC/TS 62672-1 Reliability and availability evaluation of HVDC systems - Part 1: HVDC Systems with Line Commutated Converters	Public Comment
PD IEC/TS 62773 ED 1.0 Railway applications - A procedure to determine the performancerequireme nts for radio system applied to radio-based train controlsystems	Idea

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Published standards (192)

Sort by: Reference | Title | Status

Standard reference	Name	Status
BS 7877:1999	Busbar bushings up to 1 kV and from 1,25 kA to 5 kA, for liquid filled transformers	Withdrawn
BS EN 50387:2002	Busbar bushings up to 1 kV and from 1,25 kA to 5 kA, for liquid filled transformers	Current
BS EN 50336:2002	Bushings for transformers and reactor cable boxes not exceeding 36 kV	Current
BS EN 50386:2002	Bushings up to 1 kV and from 250 A to 5 kA, for liquid filled transformers	Withdrawn
BS 7866:1996	Bushings up to 1 kV and from 250 A to 5 kA, for liquid filled transformers	Withdrawn
BS EN 50386:2010	Bushings up to 1 kV and from 250 A to 5 kA, for liquid filled transformers	Current, Work in Hand
CP 2012-1:1974	Code of practice for foundations for machinery - Foundations for reciprocating machines	Current
BS EN 50195:1997	Code of practice for the safe use of fully enclosed askarel-filled electrical equipment	Current
BS EN 50225:1997	Code of practice for the safe use of fully enclosed oil-filled electrical equipment which may be contaminated with PCBs	Current
BS EN 61378-2:2001	Convertor transformers - Transformers for HVDC applications	Current
BS EN 61378-1:1999	Convertor transformers - Transformers for industrial applications	Current
BS EN 61378-1:2011	Convertor transformers - Transformers for industrial applications	Current
BS 5938-1:1984	Cores for inductors and transformers for telecommunications - Methods of measurement	Current
BS 5938-2:1980	Cores for inductors and transformers for telecommunications - Guide to the drafting of performance specifications	Current
BS EN 60551:1993	Determination of transformer and reactor sound levels	Withdrawn
BS 7806:1995	Dry-type power transformers	Withdrawn
BS EN 60726:2003	Dry-type power transformers	Withdrawn
BS IEC 60092-303:1980	Electrical installation in ships - Equipment. Transformers for power and lighting	Current
BS EN 60938-1:2000	Fixed inductors for electromagnetic interference suppression - Generic specification	Current
BS EN 60938-2:2000	Fixed inductors for electromagnetic interference suppression - Sectional specification	Current
BS EN 60938-2-2:2000	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)	Current
BS EN 60938-2-1:2000	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	Current
BS EN 61605:1997	Fixed inductors for use in electronic and telecommunication equipment. Marking codes	Withdrawn
BS EN 60296:2004	Fluids for electrotechnical applications. Unused mineral insulating oils for transformers and switchgear	Withdrawn
BS EN 60296:2012	Fluids for electrotechnical applications. Unused mineral insulating oils for transformers and switchgear	Current
BS 4727-2:Group 09:1981	Glossary of electrotechnical, power, telecommunication, electronics, lighting and colour terms. Terms particular to power engineering - Transductor terminology	Current
BS 4727-2:Group 04:1991	Glossary of electrotechnical, power, telecommunication, electronics, lighting and colour terms. Terms particular to power engineering - Power transformers and reactors	Current
BS 6553:1984	Guide for selection of fuse links of high-voltage fuses for transformer circuit applications	Withdrawn
BS 5953-1:1980	Guide on power transformers - Application of power transformers	Withdrawn
BS 7735:1994	Guide to loading of oil-immersed power transformers	Withdrawn
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	Withdrawn
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)	Withdrawn
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)	Withdrawn
BS EN 61869-1:2009	Instrument transformers - General requirements	Current
BS EN 60044-6:1999	Instrument transformers - Requirements for protective current transformers for transient performance	Withdrawn
DD IEC/PAS 60044-5:2002	Instrument transformers - Capacitor voltage transformers	Withdrawn
BS EN 60044-7:2000	Instrument transformers - Electronic voltage transformers	Current
BS EN 60044-2:1999	Instrument transformers - Inductive voltage transformers	Current
BS EN 60044-1:1999	Instrument transformers - Current transformers	Withdrawn
BS EN 60044-3:2003	Instrument transformers - Combined transformers	Current
BS EN 61869-5:2011	Instrument transformers - Additional requirements for capacitor voltage transformers	Current
BS EN 61869-3:2011	Instrument transformers - Additional requirements for inductive voltage transformers	Current
BS EN 61869-2:2012	Instrument transformers - Additional requirements for current transformers	Current
BS 3535-2:1990	Isolating transformers and safety isolating transformers - Specification for transformers for reduced system voltage	Withdrawn
BS 3535-1:1990	Isolating transformers and safety isolating transformers - General requirements	Withdrawn
BS EN 60742:1996	Isolating transformers and safety isolating transformers. Requirements	Withdrawn
BS EN 61021-2:1997	Laminated core packages for transformers and inductors for use in telecommunication and electronic equipment - Electrical characteristics for cores using YEE 2 laminations	Current
BS EN 61021-1:1997	Laminated core packages for transformers and inductors for use in telecommunication and electronic equipment - Specification for dimensions	Current
BS 6554-1:1984	Laminations for transformers and inductors for use in telecommunication and electronic equipment - Specification for dimensions, mechanical characteristics and electrical testing	Withdrawn
BS 4533-102-102.6:1990	Luminaires. Particular requirements - Specification for luminaires with built-in transformers for filament lamps	Withdrawn
BS EN 61596:1997	Magnetic oxide EP-cores and associated parts for use in inductors and transformers. Dimensions	Current
BS EN 60599:1999	Mineral oil-impregnated electrical equipment in service. Guide to the interpretation of dissolved and free gases analysis	Current, Work in Hand
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	Current, Work in Hand
BS EN 50243:2002	Outdoor bushings for 24 kV and 36 kV and for 5 kA and 8 kA, for liquid filled transformers	Current
BS EN 60852-4:1997	Outline dimensions of transformers and inductors for use in telecommunication and electronic equipment - Transformers and inductors using YUI-2 laminations	Current
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	Current
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	Current
BS EN 50216-9:2009	Power transformer and reactor fittings - Oil-to-water heat exchangers	Current
BS EN 50216-10:2009	Power transformer and reactor fittings - Oil-to-air heat exchangers	Current
BS EN 50216-3:2002	Power transformer and reactor fittings - Protective relay for hermetically sealed liquid-immersed transformers and reactors without gaseous cushion	Current
BS EN 50216-5:2002	Power transformer and reactor fittings - Liquid level, pressure and flow indicators, pressure relief devices and dehydrating breathers	Current
BS EN 50216-8:2005	Power transformer and reactor fittings - Butterfly valves for insulating liquid circuits	Current
BS EN 50216-11:2008	Power transformer and reactor fittings - Oil and winding temperature indicators	Current
BS EN 50216-12:2011	Power transformer and reactor fittings - Fans	Current
BS IEC 60076-21:2011	Power transformers - Standard requirements, terminology, and test code for step-voltage regulators	Current
BS EN 60076-18:2012	Power transformers - Measurement of frequency response	Current
BS EN 60076-2:2011	Power transformers - Temperature rise for liquid-immersed transformers	Current
BS EN 60076-1:1997	Power transformers - General	Current
DD IEC/TS 60076-14:2009	Power transformers - Design and application of liquid-immersed power transformers using high-temperature insulation materials	Current, Work in Hand
BS EN 60076-16:2011	Power transformers - Transformers for wind turbines applications	Current
BS EN 60076-1:2011	Power transformers - General	Current
PD IEC/TS 60076-19:2013	Power transformers - Rules for the determination of uncertainties in the measurement of the losses on power transformers and reactors	Current
BS EN 60076-6:2008	Power transformers - Reactors	Current
BS IEC 60076-7:2005	Power transformers - Loading guide for oil-immersed power transformers	Current
BS EN 60076-13:2006	Power transformers - Self-protected liquid-filled transformers	Current
BS EN 60076-11:2004	Power transformers - Dry-type transformers	Current
BS EN 60076-5:2006	Power transformers - Ability to withstand short-circuit	Current
BS EN 60076-10:2001	Power transformers - Determination of sound levels	Current, Work in Hand
BS EN 60076-4:2002	Power transformers - Guide to the lightning impulse and switching impulse testing. Power transformers and reactors	Current
BS EN 60076-3:2001	Power transformers - Insulation levels, dielectric tests and external clearances in air	Current, Work in Hand
BS EN 60076-5:2001	Power transformers - Ability to withstand short circuit	Withdrawn
BS 171-1:1978	Power transformers - General	Withdrawn
BS 171-2:1978	Power transformers - Specification for temperature rise requirements	Withdrawn
BS 171-4:1978	Power transformers - Specification for tappings and connections	Withdrawn
BS 171-5:1978	Power transformers - Specification for ability to withstand short circuit	Withdrawn
BS IEC 60076-8:1997	Power transformers - Application guide	Current
BS 171-3:1987	Power transformers - Specification for insulation levels and dielectric tests	Withdrawn
BS EN 50216-4:2002	Power transformers and reactor fittings - Basic accessories (earthing terminal, drain and filling devices, thermometer pocket, wheel assembly)	Current
BS EN 50216-7:2002	Power transformers and reactor fittings - Electric pumps for transformer oil	Current
BS EN 50216-1:2002	Power transformers and reactor fittings - General	Current
BS EN 50216-6:2002	Power transformers and reactor fittings - Cooling equipment. Removable radiators for oil-immersed transformers	Current
BS EN 50216-2:2002	Power transformers and reactor fittings - Gas and oil actuated relay for liquid immersed transformers and reactors with conservator	Current
BS EN 62041:2003	Power transformers, power supply units, reactors and similar products. EMC requirements	Current
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	Current
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	Current
BS EN 50329:2003+A1:2010	Railway applications. Fixed installations. Traction transformers	Current
DD CLC/TS 50537-1:2010	Railway applications. Mounted parts of the traction transformer and cooling system - HV bushing for traction transformers	Current
DD CLC/TS 50537-2:2010	Railway applications. Mounted parts of the traction transformer and cooling system - Pump for insulating liquid for traction transformers and reactors	Current
DD CLC/TS 50537-3:2010	Railway applications. Mounted parts of the traction transformer and cooling system - Water pump for traction converters	Current
DD CLC/TS 50537-4:2010	Railway applications. Mounted parts of the traction transformer and cooling system - Gas and liquid actuated (Buchholz) relay for liquid immersed transformers and reactors with conservator for rail vehicles	Current
BS EN 60310:2004	Railway applications. Traction transformers and inductors on board rolling stock	Current
BS EN 60310:1997	Railway applications. Traction transformers and inductors on rolling stock	Withdrawn
BS EN 60289:1995	Reactors	Withdrawn
BS EN ISO 5826:2003	Resistance welding equipment. Transformers. General specifications applicable to all transformers	Current, Work in Hand
BS 4819-1:1989	Resistance welding water-cooled transformers of the press package and portable types. - Specification for press-package transformers	Current
BS 4819-2:1989	Resistance welding water-cooled transformers of the press-package and portable types. - Specification for portable transformers	Current
BS EN ISO 22829:2008	Resistance welding. Transformer-rectifier for welding guns with integrated transformers. Transformer- rectifier units operating at 1000 Hz frequency	Current
BS EN 61558-1:2005+A1:2009	Safety of power transformers, power supplies, reactors and similar products - General requirements and tests	Current
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	Current
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	Current
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	Current
BS EN 61558-2-7:1998	Safety of power transformers, power supply units and similar - Particular requirements for transformers for toys	Withdrawn
BS EN 61558-2-5:1998	Safety of power transformers, power supply units and similar - Particular requirements for shaver transformers and shaver supply units	Current
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	Current
BS EN 61558-1:1998	Safety of power transformers, power supply units and similar - General requirements and tests	Current
BS EN 61558-2-13:2000	Safety of power transformers, power supply units and similar - Particular requirements for auto-transformers for general use	Withdrawn
BS EN 61558-2-3:2000	Safety of power transformers, power supply units and similar - Particular requirements for ignition transformers for gas and oil burners	Current
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	Current
BS EN 61558-2-23:2001	Safety of power transformers, power supply units and similar. - Particular requirements for transformers for construction sites	Current
BS EN 61558-2-2:1998	Safety of power transformers, power supply units and similar. - Particular requirements for control transformers	Withdrawn
BS EN 61558-2-8:1999	Safety of power transformers, power supply units and similar. - Particular requirements for bell and chime transformers	Withdrawn
BS EN 61558-2-1:1998	Safety of power transformers, power supply units and similar. - Particular requirements for separating transformers for general use	Withdrawn
BS EN 61558-2-4:1998	Safety of power transformers, power supply units and similar. - Particular requirements for isolating transformers for general use	Withdrawn
BS EN 61558-2-6:1998	Safety of power transformers, power supply units and similar. - Particular requirements for safety isolating transformers for general use	Withdrawn
BS EN 61558-2-17:1998	Safety of power transformers, power supply units and similar. - Particular requirements for transformers for switch mode power supplies	Withdrawn
BS EN 61558-2-20:2001	Safety of power transformers, power supply units and similar. - Particular requirements for small reactors	Current
BS EN 61558-2-12:2001	Safety of power transformers, power supply units and similar. - Particular requirements for constant voltage transformers	Current
BS EN 61558-2-19:2001	Safety of power transformers, power supply units and similar. - Particular requirements for perturbation attenuation transformers	Withdrawn
BS EN 61558-2-14:2013	Safety of transformers, reactors, power supply units and combination thereof - Particular requirements and tests for variable transformers and power supply units incorporating variable transformers	Current
BS EN 61558-2-23:2010	Safety of transformers, reactors, power supply units and combinations thereof - Particular requirements and tests for transformers and power supply units for construction sites	Current
BS EN 61558-2-15:2012	Safety of transformers, reactors, power supply units and combinations thereof - Particular requirements and tests for isolating transformers for the supply of medical locations	Current
BS EN 61558-2-3:2010	Safety of transformers, reactors, power supply units and combinations thereof - Particular requirements and tests for ignition transformers for gas and oil burners	Current
BS EN 61558-2-5:2010	Safety of transformers, reactors, power supply units and combinations thereof - Particular requirements and tests for transformer for shavers, power supply units for shavers and shaver supply units	Current
BS EN 61558-2-9:2011	Safety of transformers, reactors, power supply units and combinations thereof - Particular requirements and tests for transformers and power supply units for class III handlamps for tungsten filament lamps	Current
BS EN 61558-2-12:2011	Safety of transformers, reactors, power supply units and combinations thereof - Particular requirements and tests for constant voltage transformers and power supply units for constant voltage	Current
BS EN 61558-2-20:2011	Safety of transformers, reactors, power supply units and combinations thereof - Particular requirements and tests for small reactors	Current
BS EN 61558-2-8:2010	Safety of transformers, reactors, power supply units and combinations thereof - Particular requirements and tests for transformers and power supply units for bells and chimes	Current
BS EN 62041:2010	Safety of transformers, reactors, power supply units and combinations thereof. EMC requirements	Current
BS EN 61558-2-6:2009	Safety of transformers, reactors, power supply units and similar products for supply voltages up to 1100 V - Particular requirements and tests for safety isolating transformers and power supply units incorporating safety isolating transformers	Current
BS EN 61558-2-13:2009	Safety of transformers, reactors, power supply units and similar products for supply voltages up to 1100 V - Particular requirements and tests for auto transformers and power supply units incorporating auto transformers	Current
BS EN 61558-2-16:2009	Safety of transformers, reactors, power supply units and similar products for supply voltages up to 1100 V - Particular requirements and tests for switch mode power supply units and transformers for switch mode power supply units	Current
BS EN 61558-2-4:2009	Safety of transformers, reactors,power supply units and similar products for supply voltages up to 1100 V - Particular requirements and tests for isolating transformers and power supply units incorporating isolating transformers	Current
BS 9741:1986	Sectional specification for inductors of assessed quality for use in electronic equipment for capability approval	Current
BS 9727:1985	Sectional specification for power transformers of assessed quality for use in electronic equipment for capability approval	Current
BS 9733:1985	Sectional specification for pulse transformers of assessed quality for use in electronic equipment for capability approval	Current
BS 9734:1978	Sectional specification for pulse transformers of assessed quality for use in electronic equipment: full assessment level	Current
BS 9721:1985	Sectional specification for signal transformers of assessed quality for use in electronic equipment for capability approval	Current
BS EN 60146-1-3:1993	Semiconductor convertors. General requirements and line commutated convertors - Transformers and reactors	Current
BS 2538:1954	Specification for air-cooled flameproof single-phase lighting transformer units supplied from high voltage systems	Obsolescent
BS 7616:1993	Specification for bushings for liquid filled transformers above 1 kV and up to 36 kV	Withdrawn
BS 2562:1979	Specification for cable boxes for transformers and reactors	Current
BS 3938:1973	Specification for current transformers	Withdrawn
BS 7626:1993	Specification for current transformers	Withdrawn
BS 9720:1989	Specification for custom-built transformers and inductors of assessed quality: generic data and methods of test	Obsolescent
BS 5067:1985	Specification for flameproof transformers for use in mines	Current
BS 6436:1984	Specification for ground mounted distribution transformers for cable box or unit substation connection	Obsolescent
BS 7729:1994	Specification for instrument transformers. Three-phase voltage transformers for voltage levels having Um up to 52 kV	Withdrawn
BS 171:1970	Specification for power transformers	Withdrawn
BS 7452:1991	Specification for separating transformers, autotransformers, variable transformers and reactors	Current
BS 5347:1976	Specification for silicon-iron strip-wound cores for use in transformers and inductors for telecommunications and electronic equipment	Current
BS 7682:1993	Specification for stationary transformers in traction systems	Withdrawn
BS 7125:1989	Specification for transformers for resistance welding machines	Withdrawn
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	Current
BS 3399:1961	Specification for transformers for use in ships	Obsolescent
BS 3941:1975	Specification for voltage transformers	Withdrawn
BS 7625:1993	Specification for voltage transformers	Withdrawn
BS EN 60214-1:2003	Tap-changers - Performance requirements and test methods	Current, Work in Hand
BS EN 50541-1:2011	Three phase dry-type distribution transformers 50 Hz, from 100 kVA to 3150 kVA, with highest voltage for equipment not exceeding 36 kV - General requirements	Current
BS 7821-6:2002	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	Withdrawn
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	Withdrawn
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	Withdrawn
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	Withdrawn
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	Withdrawn
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	Withdrawn
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	Withdrawn
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	Obsolescent
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	Withdrawn
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	Withdrawn
BS EN 50464-1:2007+A1:2012	Three-phase oil-immersed distribution transformers 50 Hz, from 50 kVA to 2 500 kVA with highest voltage for equipment not exceeding 36 kV - General requirements	Current
BS EN 50464-4:2007+A1:2011	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	Current
BS EN 50464-2-2:2007	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 1 for use on distribution transformers meeting the requirements of EN 50464-2-1	Current
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	Current
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	Current
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	Current
BS EN 61248-7:1998	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	Current
BS EN 61248-6:1997	Transformers and inductors for use in electronic and telecommunication equipment - Sectional specification for inductors on the basis of the capability approval procedure	Current
BS EN 61248-5:1997	Transformers and inductors for use in electronic and telecommunication equipment - Sectional specification for pulse transformers on the basis of the capability approval procedure	Current
BS EN 61248-4:1997	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	Current
BS EN 61248-3:1997	Transformers and inductors for use in electronic and telecommunication equipment - Sectional specification for power transformers on the basis of the capability approval procedure	Current
BS EN 61248-1:1997	Transformers and inductors for use in electronic and telecommunication equipment - Generic specification	Current
BS EN 61248-2:1997	Transformers and inductors for use in electronic and telecommunication equipment - Sectional specification for signal transformers on the basis of the capability approval procedure	Current
BS EN 61007:1997	Transformers and inductors for use in electronic and telecommunication equipment. Measuring methods and test procedures	Current

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Committees (24)

Sort by: Reference | Name

Committee Reference	Title
CPL/34/3	Auxiliaries for lamps
PEL/213	Cable management
EPL/40X	Capacitors and resistors for electronic equipment
JPEL/18	Electrical installations of ships and of mobile and fixed offshore units
GEL/1	Electrotechnical Terminology
GEL/999	Error Projects
GEL/10	Fluids for electrotechnical applications
PEL/32	Fuses
B/526	Geotechnics
PEL/38	Instrument transformers
PEL/36	Insulators for power systems
CPL/34/4	Luminaires
MRE/3	Mining electrical equipment
PEL/22	Power electronics
E/-/20	Power engineering steering committee
PEL/14	Power transformers
PH/3	Protective clothing
GEL/9	Railway Electrotechnical Applications
GEL/9/3	Railway Electrotechnical Applications - Fixed Equipment
GEL/9/2	Railway Electrotechnical Applications - Rolling stock
WEE/29	Resistance welding
PEL/2	Rotating electrical machinery
PEL/96	Small transformers
EPL/51	Transformers, inductors, magnetic components and ferrite materials

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