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Transformers & reactors

Standards in development (233)

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Standard TitleStatus
BS 8002 Code of practice for earth retaining structuresApproval
BS 8004 Code of practice for foundationsApproval
BS 8081 Grouted anchors - Code of practicePublic Comment
BS EN 1536:2010/A1 Execution of special geotechnical works - Bored pilesPublication
BS EN 343:2003/A1 Protective clothing - Protection against rainPublic Comment
BS EN 50124-1 Railway applications - Insulation coordination Part 1: Basic requirements - Clearances and creepage distances for all electrical and electronic equipmentIdea
BS EN 50124-2 Railway applications - Insulation coordination Part 2: Overvoltages and related protectionIdea
BS EN 50152-3-1 Railway applications - Fixed installations - Particular requirements fora.c. switchgear Part 3-1: Measurement, control and protection devices for specific use in a.c. traction systems - Application guidenull
BS EN 50152-3-2 Railway applications - Fixed installations - Particular requirements fora.c. switchgear Part 3-2: Measurement, control and protection devices for specific use in a.c. traction systems - Single-phase current transformersPublic Comment
BS EN 50152-3-3 Railway applications - Fixed installations - Particular requirements fora.c. switchgear Part 3-3: Measurement, control and protection devices for specific use in a.c. traction systems - Single-phase inductive voltage transformersPublic Comment
BS EN 50155 Railway applications - Electronic equipment used on rolling stockAccepted
BS EN 50171 Central safety power supply systemsApproval
BS EN 50180-1 and from 250 A to 3,15 kA for liquid filled transformersPublic Comment
BS EN 50180-2 Bushings above 1 kV up to 52 kV and from 250A to 3,15 kA for liquid filled transformers Part 2: Requirement for bushing componentsnull
BS EN 50180-3 Bushings above 1 kV up to 52 kV and from 250 A to 3,15 kA for liquid filled transformers Part 3: Requirement for bushing fixationsnull
BS EN 50367:2012 prA1 Railway applications - Current collection systems - Technical criteriafor the interaction between pantograph and overhead line (to achievefree access) (Requirements on gauges and contact strips)Public Comment
BS EN 50388-2 Railway Applications - Power supply and rolling stock - Technicalcriteria for the coordination between power supply and rolling stock toachieve interoperability Part 2: stability and harmonicsAccepted
BS EN 50405 Railway applications - Current collection systems - Pantographs, testing methods for contact stripsPublic Comment
BS EN 50502 Railway applications - Rolling stock - Electric equipment in trolley buses - Safety requirements and connection systemsPublication
BS EN 50526-3 Railway Applications - Fixed Installations - D.C. surge arresters and voltage limiting devices Part 3: Application guidePublic Comment
BS EN 50562 Railway applications - Fixed installations - Process, measures anddemonstration of safety for electric traction systemsnull
BS EN 50588-1 Medium voltage transformers 50 Hz, with highest voltage for equipmentnot exceeding 36 kV - Part 1: General requirementsApproval
BS EN 50592 Railway applications - Testing of rolling stock for electromagneticcompatibility with axle countersPublic Comment
BS EN 50626 Conduit systems buried underground for the protection and management of insulated electrical cables or communication cablesIdea
BS EN 50629 Energy efficiency of transformers with Um greater than 36 kVApproval
BS EN 50633 Railway applications - Fixed installations - Protection principles for electric traction systemsPublic Comment
BS EN 50641 Railway applications - Fixed installations - Requirements for the valida tion of simulation tools used for the design of traction power supply sy stemsPublic Comment
BS EN 60034-1 Ed 13.0 Rotating electrical machines Part 1: Rating and performancePublic Comment
BS EN 60034-12 Ed 3.0 Rotating electrical machines Part 12: Starting performance of single-speed three-phase cage induction motorsPublic 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 convertersPublic Comment
BS EN 60034-2-1:2007 Rotating electrical machines - Part 2-1: Standard methods for determining losses and efficiency from tests (excluding machines for traction vehicles)Approval
BS EN 60034-23 ED 1.0 Rotating electrical machines Part 23: Specification for the refurbishment of rotating electrical machinesAccepted
BS EN 60034-27-3 Ed. 1.0 Rotating electrical machines - Part 27-3: Dielectric dissipation factor measurement on stator winding insulation of rotating electrical machinesPublic Comment
BS EN 60034-27-4 Rotating electrical machines - Part 27-4: Measurement of insulation resistance and polarization index on winding insulation of rotating electrical machinesAccepted
BS EN 60034-30:2009 Rotating electrical machines - Part 30: Efficiency classes of single-speed,three-phase, cage-induction motors (IE-code)Approval
BS EN 60050-811 Ed. 2.0 International Electrotechnical Vocabulary (IEV) Part 811: Electric tractionAccepted
BS EN 60062 Ed 6.0 Marking codes for resistors and capacitorsPublic Comment
BS EN 60076-10 ED 2.0 Power transformers Part 10: Determination of sound levelsPublic Comment
BS EN 60076-10-1 Ed2.0 IEC 60076-10-1: Power transformers Part 10-1: Determination of sound levels – Application guidePublic Comment
BS EN 60076-16 Ed 2.0 Power transformers Part 16: Transformers for wind turbine applicationsAccepted
BS EN 60076-20 Ed1.0 Power transformers Part 20: Energy efficiencyAccepted
BS EN 60076-57-1202 Ed1.0 Power transformers Liquid immersed phase-shifting transformersPublic Comment
BS EN 60076-7 Ed 2.0 Power transformers Part 7: Loading guide for liquid-immersed power transformersAccepted
BS EN 60077-1 Ed. 2.0 Railway applications - Electric equipment for rolling stock Part 1: General service conditions and general rulesAccepted
BS EN 60077-2 Ed. 2.0 Electric equipment for rolling stock Part 2: Electrotechnical components - General rulesAccepted
BS EN 60092-100-1 Electrical installations in ships Part 100-1: General - System design; general requirements and testsAccepted
BS EN 60092-100-2 Electrical installations in ships Part 100-2: General - Power supply and distribution; additional requirementsAccepted
BS EN 60092-100-3 Electrical installations in ships Part 100-3: General - Control and AutomationAccepted
BS EN 60092-100-4 Electrical installations in ships Part 100-4: General - Equipment; additional requirementsAccepted
BS EN 60092-101 Ed 5.0 Electrical installations in ships Part 101: Definitions and generalAccepted
BS EN 60092-201 Ed 5.0 Electrical installations in ships Part 201: System design - GeneralAccepted
BS EN 60092-201 Electrical installations in ships - Part 201: System design - General, clause 14: Shore connectionsAccepted
BS EN 60092-502 ED 6.0 IEC 60092-502: Electrical installations in ships - Part 502: Tankers - Special featuresAccepted
BS EN 60092-504 Ed 4.0 Electrical installations in ships - Part 504: Automation, control and instrumentationPublic Comment
BS EN 60092-507 Electrical installations in ships Part 507: Small vesselsApproval
BS EN 60115-22014+A1 Fixed resistors for use in electronic equipment Part 2: Sectional specification: Leaded fixed low power film resistorsnull
BS EN 60115-8-1 Fixed resistors for use in electronic equipment Part 8-1: Blank detail specification: Fixed surface mount (SMD) low power film resistors for general electronic equipment, classification level GPublication
BS EN 60115-8-1:2014+A1 Fixed resistors for use in electronic equipment - Part 8-1: Blank detail specification: Fixed surface mount (SMD) low power film resistors for general electronic equipment, classification level Gnull
BS EN 60127-5 Miniature fuses - Part 5: Guidelines for quality assessment of miniature fuse-linksAccepted
BS EN 60127-7:2013+A1 Miniature fuses - Part 7: Miniature fuse-links for special applicationsPublic Comment
BS EN 60137 Ed. 7.0 Insulated bushings for alternating voltages above 1000 VAccepted
BS EN 60195 Method of measurement of current noise generated in fixed resistorsPublic Comment
BS EN 60269-4 Ed 4.0/A2 Low-voltage fuses - Part 4: Supplementary requirements for fuse-links for the protection of semiconductor devicesAccepted
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 systemsPublic Comment
BS EN 60276 Ed. 2.0 IEC 60276 Ed. 2.0 Definitions and nomenclature for carbon brushes,brush-holders, commutators and slip-ringsPublic Comment
BS EN 60305 Insulators for overhead lines with a nominal voltage above 1000 V ceramic or glass insulator units for a a.c. systems - Characteristics of insulator units of the cap and pin typeAccepted
BS EN 60310 ED 4.0 Railway applications - Traction transformers and inductors on board rolling stockPublic Comment
BS EN 60376 Ed3.0 sulfur hexafluoride (SF6) and complementary gases to be used in its mixtures for use in electrical equipmentAccepted
BS EN 60384-1 Fixed capacitors for use in electronic equipment - Part 1: Generic specificationPublic Comment
BS EN 60384-14 Ed 4.0 /A1 Fixed capacitors for use in electronic equipment Part 14: Sectional specification - Fixed capacitors for electromagnetic interference suppression and connection to the supply mainsAccepted
BS EN 60384-14-1 Ed 3.0 Fixed capacitors for use in electronic equipment Part 14-1: Blank detail specification: Fixed capacitors for electromagnetic interference suppression and connection to the supply mains - Assessment level DZPublic Comment
BS EN 60384-14-2 Ed 2.0 Fixed capacitors for use in electronic equipment Part 14-2: Blank detail specification - Fixed capacitors for electromagnetic interference suppression and connection to the supply mains - Safety tests onlyPublic Comment
BS EN 60384-15 Fixed capacitors for use in electronic equipment. Part 15: Sectional specification: Fixed tantalum capacitors with non- solid or solid electrolyteAccepted
BS EN 60384-18 Fixed capacitors for use in electronic equipment - Part 18: Sectional specification - Fixed aluminium electrolytic surface mount capacitors with solid (MnO2) and non-solid electrolytePublic Comment
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. capacitorsPublication
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. capacitorsApproval
BS EN 60384-23 Fixed capacitors for use in electronic equipment Part 23: Sectional specification - Fixed surface mount metallized polyethylene naphthalate film dielectric DC capacitorsPublication
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 electrolyteApproval
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 electrolyteApproval
BS EN 60384-3 Fixed capacitors for use in electronic equipment - Part 3: Sectional specification: Surface mount fixed tantalum electrolyt capacitors with manganese dioxide solid electrolyteAccepted
BS EN 60384-4 Fixed capacitors for use in electronic equipment - Part 4: Sectional specification - Fixed aluminium electrolytic capacitors with solid (MnO2) and non-solid electrolytePublic Comment
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 coresPublic Comment
BS EN 60424-1 Ferrite cores - Guidelines on the limits of surface irregularities Part 1: General SpecificationPublic Comment
BS EN 60424-2 Ferrite cores - Guidelines on the limits of surface irregularities Part 2: RM-coresPublic Comment
BS EN 60424-3 Ferrite cores - Guidelines on the limits of surface irregularities Part 3: ETD-cores, EER-cores, EC-cores and E-coresApproval
BS EN 60424-4 Ferrite cores - Guidelines on the limits of surface irregularities Part 4: Ring-coresPublic Comment
BS EN 60424-8 Ferrite cores - Guidelines on the limits of surface irregularities Part 8: PQ-coresPublication
BS EN 60433 Insulators for overhead lines with a nominal voltage above 1000 V - Ceramic insulators for a.c. systems - Characteristics of insulator units of the long rod typeAccepted
BS EN 60533 Ed 3.0 Electrical and electronic installations in ships - Electromagnetic compatibilityApproval
BS EN 60539-1 Directly heated negative temperature coefficient thermistors Part 1: Generic specificationPublic Comment
BS EN 60556 Ed. 2.0/Amd1 Gyromagnetic materials intended for application at microwave frequencies- Measuring methods for propertiesPublication
BS EN 60598-2-13:2006/A1:20011/A2 Luminaires - Part 2-13: Particular requirements - Ground recessed luminairesIdea
BS EN 60598-2-17 Ed 2.0 Luminaires - Part 2-17: Particular requirements - Luminaires for stage lighting, television and film studios (outdoor and indoor)Accepted
BS EN 60598-2-4 Luminaires - Part 2: Particular requirements - Portable general purpose luminairesAccepted
BS EN 60598-2-5 Luminaires - Part 2- 5: Particular requirements - FloodlightsApproval
BS EN 60599 Mineral oil-impregnated electrical equipment in service - Guide to the interpretation of dissolved and free gases analysisApproval
BS EN 60633:1999+A1:2009+A2 Terminology for high-voltage direct current (HVDC) transmissionPublic Comment
BS EN 60691 Thermal-links – Requirements and application guidePublic Comment
BS EN 60700-1 Thyristor valves for high voltage direct current (HVDC) power transmission - Part 1: Electrical testingPublic Comment
BS EN 60700-2 Thyristor valves for high-voltage direct current (HVDC) power transmission - Part 2: TerminologyPublic Comment
BS EN 60836 Specifications for unused silicone insulating liquids for electrotechnical purposesApproval
BS EN 60929:2011+A1 AC and/or DC-supplied electronic control gear for tubular fluorescent lamps - Performance requirementsPublication
BS EN 60939-3 Passive filter units for electromagnetic interference suppression Part 3: Standard for passive filter units for which safety tests are appropriateApproval
BS EN 61045-1 Fixed film resistor networks for use in electronic equipment - Part 1 : Generic specificationPublic Comment
BS EN 61048:2006+A1 Auxiliaries for lamps - Capacitors for use in tubular fluorescent and other discharge lamp circuits - General and safety requirementsPublication
BS EN 61084-1 Cable trunking and cable ducting systems for electrical installations Part 1: General requirementsPublic Comment
BS EN 61084-2-1 Cable trunking and ducting systems for electrical installations Part 2-1: Cable trunking systems and cable ducting systems intended for mounting on walls and ceilingsPublic Comment
BS EN 61084-2-2 Cable trunking and ducting systems for electrical installations Part 2-2: Particular requirements for cable trunking systems and cable ducting systems intended for mounting underfloor, flushfloor, or onfloorPublic Comment
BS EN 61084-2-3 Cable trunking systems and cable ducting systems for electrical installations Part 2-3: Particular requirements for slotted cable trunking systems intended for installation in cabinetsPublic Comment
BS EN 61084-2-4 Cable trunking and ducting systems for electrical installations Part 2-4: Particular requirements for service poles and service postsPublic Comment
BS EN 61204-3 Low voltage power supplies, d.c. output - Part 3: Electromagnetic compatibility (EMC)Public Comment
BS EN 61204-7 Low-voltage switch mode power supplies - Part 7: Safety requirementsPublic Comment
BS EN 61347-2-13:2014/A1 Lamp controlgear - Part 2-13: Particular requirements for d.c. or a.c. supplied electronic controlgear for LED modulesPublic Comment
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 lampsPublic Comment
BS EN 61377 Ed. 2.0 Railway Applications - Rolling stock - Combined-testing of motors andtheir control systemPublic Comment
BS EN 61386-1 Conduit systems for cable management - Part 1: General requirementsApproval
BS EN 61466-1 Composite string insulator units for overhead lines with a nominalvoltage greater that 1000 V - Part 1: Standard strength and end fittingsAccepted
BS EN 61643-31 Low-voltage surge protective devices Part 31: Requirements and test methods for SPDs for photovoltaic installationsAccepted
BS EN 61643-32 Low-voltage surge protective devices - Surge protective devices for specific use including d.c. Part 32: Selection and application principles - SPDs connected to photovoltaic installationsAccepted
BS EN 61643-331 Components for low-voltage surge protective devices - Part 331: Performance requirements and test methods for metal oxide varistors (MOV)Accepted
BS EN 61643-351 Components for low-voltage surge protective devices Part 351: Performance requirements and test circuits for lightning isolation transformers (LIT)Public Comment
BS EN 61643-352 Low-voltage surge protective component Part 352: Lightning isolation transformers connected to telecommunications and signalling networks-Selection and application principlesAccepted
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 systemsPublication
BS EN 61800-3:2004+A1:2012+A2 Adjustable speed electrical power drive systems - Part 3: EMC requirements and specific test methodsAccepted
BS EN 61800-5-1:2007/A1 Adjustable speed electrical power drive systems - Part 5-1: Safety requirements - Electrical, thermal and energyAccepted
BS EN 61800-5-2 Adjustable speed electrical power drive systems - Part 5-2: Safety requirements - FunctionalPublic Comment
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 definitionApproval
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 specificationApproval
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 specificationApproval
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 specificationApproval
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 specificationApproval
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 technologiesApproval
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 technologiesApproval
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 technologiesApproval
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 technologiesApproval
BS EN 61800-9-1 IEC 61800-9-1 Ed.1: Adjustable speed electrical power drive systems - Part 9-1: Eergy efficiency of power drive systems, motor starters, power electronics and their driven applications – General requirements for setting energy efficiency standards for power driven equipment using the Extended Product Approach (EPA) and semi analytic model (SAM)Public Comment
BS EN 61800-9-2 Adjustable speed electrical power drive systems - Part 9-2: Part 9-2: Ecodesign for power drive systems, motor starters, power electronics & their driven applications - Energy efficiency indicators for power drive systems and motor startersPublic Comment
BS EN 61803:1999+A1:2010+ A2 Determination of power losses in high-voltage direct current (HVDC) converter stationsPublic Comment
BS EN 61869-10 Instrument transformers Part 10: Additional requirements for low-power, stand-alone current sensorsPublic Comment
BS EN 61869-14 Instrument Transformers Part 14: Specific Requirements for DC Current TransformersPublic Comment
BS EN 61869-15 Instrument Transformers Part 15: Specific Requirements for DC Voltage TransformersPublic Comment
BS EN 61869-6 Instrument Transformers Part 6: Additional General Requirements for Low Power Instrument TransformersPublic Comment
BS EN 61869-9 Instrument Transformers Part 9: Digital Interface for Instrument TransformersPublic Comment
BS EN 61914 Cable cleats for electrical installationsPublic Comment
BS EN 61954:2011+A2 Static VAR compensators (SVC) - Testing of thyristor valvesIdea
BS EN 61975:2010+A1 High-voltage direct current (HVDC) installations - System testsPublic Comment
BS EN 62040-1 Uninterruptible power systems (UPS) - Part 1: General and safety requirements for UPSPublic Comment
BS EN 62040-2 Ed3.0 Uninterruptible power systems (UPS) - Part 2: Electromagnetic compatibility requirements (EMC)Accepted
BS EN 62040-5-3 Ed1.0 Uninterruptible power systems (UPS) - Part 5-3: Method of specifying the performance and test requirements for d.c. UPSPublic Comment
BS EN 62041 Safety of transformers, reactors, power supply units and combinations thereof - EMC requirementsPublic Comment
BS EN 62317-11 Ferrite cores - Dimensions Part 11: EC-cores for use in power supply applicationsPublication
BS EN 62317-12 Ferrite cores - Dimensions Part 12: Ring coresAccepted
BS EN 62317-13 Ferrite cores - Dimensions Part 13: PQ-cores for use in power supply applicationsApproval
BS EN 62317-5 Ferrite cores - Dimensions Part 5: EP-cores and associated parts for use in inductors and transformersPublic Comment
BS EN 62317-6 Ferrite cores - Dimensions Part 6: ETD-cores for use in power suppliesPublic Comment
BS EN 62333-2:2006+A1 Noise suppression sheet for digital devices and equipment Part 2: Measuring method Amendment 1Publication
BS EN 62386-201 Digital addressable lighting interface – Part 201: Particular requirements for control gear – Fluorescent lamps (device type 0Publication
BS EN 62386-202:2009+A1 Digital addressable lighting interface - Part 202: Particular requirements for control gear - Self-contained emergency lighting (device type 1)Idea
BS EN 62386-301 Digital addressable lighting interface - Part 301: General requirements - Input devices - Push buttons and binary inputsAccepted
BS EN 62386-302 Digital addressable lighting interface - Part 302: Particular requirements - Input devices - Absolute input devicesIdea
BS EN 62386-303 Digital addressable lighting interface - Part 303: Particular requirements - Input devices - Occupancy sensorIdea
BS EN 62386-304 Digital addressable lighting interface - Part 304: Particular requirements - Input devices - Light sensorIdea
BS EN 62386-332 Digital addressable lighting interface - Part 332: Particular requirements - Input control devices - FeedbackIdea
BS EN 62386-333 Digital addressable lighting interface - Part 333: Particular requirements for control devices - Manual Configuration (feature type 33)Accepted
BS EN 62391-1 Fixed electric double-layer capacitors for use in electronic equipment - Part 1: Generic specificationApproval
BS EN 62477-1:2012+A1 Safety requirements for power electronic converter systems and equipment- Part 1: GeneralPublic Comment
BS EN 62549 Articulated systems and flexible systems for cable guidingnull
BS EN 62609-1 Insulators for overhead lines - Composite line post insulators Part 1 - Definitions, End Fittings and Designationsnull
BS EN 62625-2 Electronic railway equipment - On-board driving data recording system Part 2: Conformance testingPublic Comment
BS EN 62689-1 Current and Voltage sensors or detectors; to be used for fault passage indication purposes Part 1: System aspectsPublic Comment
BS EN 62689-2 Current and Voltage sensors or detectors; to be used for fault passage indication purposes Part 2: General principles and requirementsPublic Comment
BS EN 62701 Reprocessed mineral insulating oils – Re-refined oils and reclaimed mineral insulating oils for transformers and switchgearApproval
BS EN 62718 Railway applications - Rolling stock - DC supplied electronic ballastsfor lighting fluorescent lampsApproval
BS EN 62722-1 Luminaire performance - Part 1: General RequirementsPublication
BS EN 62722-2-1 Luminaire performance - Part 2-1: Particular requirements for LED luminairesPublication
BS EN 62733 Programmable components in electronic lamp controlgear – Part 1: General and safety requirementsPublication
BS EN 62742 Electrical and electronic installations in ships - Electromagnetic compatibility - Ships with a non-metallic hullAccepted
BS EN 62756-1 Digital load line transmission lighting interface - Part 1:Basic requirementsPublic 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 criteriaAccepted
BS EN 62812 Method of measurement of low resistanceAccepted
BS EN 62823 Thyristor valves for thyristor controlled series capacitors (TCSC) - Electrical testingPublication
BS EN 62846 Ed. 1.0 Railway applications - Current collection systems - Requirements for andvalidations of measurements of the dynamic interaction betweenpantograph and overhead contact lineAccepted
BS EN 62864-1 ED 1.0 stock - Power supply with onboard energystorage system Part 1: Series hybrid systemPublic Comment
BS EN 62909-1 Bi-directional grid connected power converters - Part 1: General requirementsAccepted
BS EN 62927 Voltage sourced converter (VSC) valves for static synchronous compensator (STATCOM) - Electrical testingAccepted
BS EN 62928 Ed. 1.0 Railway applications - Rolling stock equipment - Onboard lithium-iontraction batteriesIdea
BS EN 62956 Hybrid electric double layer capacitors for use in electric and electronic equipment - Test methods for electrical characteristicsAccepted
BS EN 80005-1 Ed 2.0 Utility connections in port Part 1: High Voltage Shore Connection (HVSC) Systems - General requirementsAccepted
BS EN 80005-2 Utility connections in port Part 2: High voltage shore connection (HVSC) systems - Communication for monitoring and controlPublic Comment
BS EN EN 60076-19 Power transformers Part 19: Rules for the determination of uncertainties in the measurement of the losses on power transformers and reactorsApproval
BS EN PNW 9-1872 Ed. 1.0 Railway applications - Fixed installations - Stationary energy storagesystem for DC traction systemsAccepted
BS EN PWI 9-12 Ed. 1.0 Lithium-Ion Traction Batteries for Railways ApplicationsAccepted
BS ENISO 18278-2 Resistance welding - Weldability Part 2: Evaluation procedures for weldability in spot weldingApproval
BS ENISO 22829 Transformer-rectifier for welding guns with integrated transformers - Transformer-rectifier units operating at 1000 Hz frequencyPublic Comment
BS ENISO 27508 Resistance spot welding — weld bonding of coated and uncoated sheet materialsAccepted
BS ENISO 5182 electrodes and ancillary equipmentPublic Comment
BS ENISO 669 Resistance welding - Resistance welding equipment - Mechanical and electrical requirementsApproval
BS ENISO 8430-1 Resistance spot welding - Electrode holders Part 1: Taper fixing 1:10Approval
BS ENISO 8430-2 Resistance spot welding - Electrode holders Part 2: Morse taper fixingApproval
BS ENISO 8430-3 Resistance spot welding - Electrode holders Part 3: Parallel shank fixing for end thrustApproval
BS HD 60269-2 :2013/A1 Low-voltage fuses - Part 2: Supplementary requirements for fuses for use by authorized persons (fuses mainly for industrial application) - Examples of standardized systems of fuses A to KPublic Comment
BS IEC 60050-821 ED 2.0 International Electrotechnical Vocabulary (IEV) Part 821: Signalling and security apparatus for railwaysAccepted
BS IEC 60076-15 Power transformers Part 15: Gas-filled power transformersPublication
BS IEC 60092-202 Ed 5.0 Electrical installations in ships Part 202: System design - ProtectionPublic Comment
BS IEC 60092-506 Electrical installations in ships – Part 506: Special features – Ships carrying specific dangerous goods andmaterials hazardous only in bulkAccepted
BS IEC 60393-2 Potentiometers for use in electronic equipment. Part 2: Sectional specification: Lead-screw actuated and rotary preset potentiometersPublic Comment
BS IEC 60393-5 Potentiometers for use in electronic equipment. Part 5: Sectional specification - Single-turn rotary low-power wirewound and non-wirewound potentiometersPublic Comment
BS IEC 60393-6 Potentiometers for use in electronic equipment. Part 6: Sectional specification - Surface mount preset potentiometersPublic Comment
BS IEC 61643-22 Low-voltage surge protective devices Part 22: Surge protective devices connected to telecommunications and signalling networks - Selection and application principlesApproval
BS IEC 61892-1 Ed 3.0 Mobile and fixed offshore units - Electrical installations - Part 1: General requirements and conditionsPublication
BS IEC 62231-1 Ed1.0 Composite station post insulators for substations with ac voltages greater than 1 000 V up to 245 kV – Part 1: Dimensional, mechanical and electrical characteristicsPublic Comment
BS ISO 10656 Electric resistance welding - Integrated transformers for welding gunsPublic Comment
PD CLC/TR 50646 Railway applications - Fixed Installations - Specification for reversible d.c. substationsApproval
PD CLC/TR 50XXX Railway applications - Specification for reversible direct current substationsIdea
PD CLC/TS 50459-1 Communication, signalling and processing systems - European Rail TrafficManagement System - Driver-Machine Interface Part 1: General principles for the presentation of ERTMS/ETCS/GSM-R informationPublication
PD CLC/TS 50459-2 Communication, signalling and processing systems - European Rail TrafficManagement System - Driver-Machine Interface Part 2: Ergonomic arrangements of ERTMS/GSM-R informationAccepted
PD CLC/TS 50459-3 Communication, signalling and processing systems - European Rail TrafficManagement System - Driver-Machine Interface Part 3: Ergonomic arrangements of non ETCS command and control functionsAccepted
PD CLC/TS 50459-4 Communication, signalling and processing systems - European Rail TrafficManagement System - Driver-Machine Interface Part 4: Ergonomic arrangements of other train functionsIdea
PD CLC/TS 60034-25 Rotating electrical machines Part 25: A.C. Motors when used in power drive systems - Application guid eAccepted
PD CLC/TS 62896 Hybrid insulators for a.c. and d.c. applications with voltage greater than 1 000 V-- Definitions, test methods and acceptancecriteriaPublication
PD IEC/TR 60919-2 :2008+A1 Performance of high-voltage direct current (HVDC) systems withline- commutated converters - Part 2: Faults and switchingPublication
PD IEC/TR 60919-3:2009/A1 Performance of high-voltage direct current (HVDC) systems with line-commutated converters - Part 3: Dynamic conditionsPublication
PD IEC/TR 61869-100 Guide for application of current transformers in power system protectionPublication
PD IEC/TR 62001-1 Ed1.0 High-voltage direct current (HVDC) systems - Guidebook to the specification and design evaluation of A.C. filters - Part 1: OverviewPublication
PD IEC/TR 62001-4 Ed1.0 High-voltage direct current (HVDC) systems - Guidebook to the specification and design evaluation of A.C. filters - Part 4: EquipmentPublication
PD IEC/TR 62544:2011/A1 High-voltage direct current (HVDC) systems - Application of activefiltersPublication
PD IEC/TR 62757 Fire prevention measures on converters for high-voltage direct current (HVDC) systems, static var compensators (SVC) and flexible AC transmission systems (FACTS) and their valve hallsPublication
PD IEC/TS 60034-30-2 Ed 1.0 Rotating electrical machines Part 30-2: Efficiency classes of variable speed AC motors (IE-code)Accepted
PD IEC/TS 60034-32 Rotating electrical machines - Part 32: Measurement of stator end winding vibration at form wound windingsAccepted
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. systemsIdea
PD IEC/TS 61463 Ed2.0 Bushings-Seismic QualificationApproval
PD IEC/TS 62040-4-1 Ed 1.0 Uninterruptible power systems (UPS) - Part 4-1: Environmental aspects - Product category rules (PCR) for life cycle assessmentAccepted
PD IEC/TS 62073 Guidance on the measurement of hydrophobicity of insulator surfaces Part 2: Faults and switchingPublication

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Published standards (205)

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Standard referenceNameStatus
BS EN 50387:2002Busbar bushings up to 1 kV and from 1,25 kA to 5 kA, for liquid filled transformersCurrent
BS 7877:1999Busbar bushings up to 1 kV and from 1,25 kA to 5 kA, for liquid filled transformersWithdrawn
BS EN 50336:2002Bushings for transformers and reactor cable boxes not exceeding 36 kVCurrent
BS EN 50386:2002Bushings up to 1 kV and from 250 A to 5 kA, for liquid filled transformersWithdrawn
BS 7866:1996Bushings up to 1 kV and from 250 A to 5 kA, for liquid filled transformersWithdrawn
BS EN 50386:2010+A1:2013Bushings up to 1 kV and from 250 A to 5 kA, for liquid filled transformersCurrent
CP 2012-1:1974Code of practice for foundations for machinery - Foundations for reciprocating machinesCurrent
BS EN 50195:1997Code of practice for the safe use of fully enclosed askarel-filled electrical equipmentCurrent
BS EN 50225:1997Code of practice for the safe use of fully enclosed oil-filled electrical equipment which may be contaminated with PCBsCurrent
BS IEC 61378-3:2015Converter transformers - Application guideCurrent
BS EN 61378-2:2001Convertor transformers - Transformers for HVDC applicationsCurrent
BS EN 61378-1:1999Convertor transformers - Transformers for industrial applicationsWithdrawn
BS EN 61378-1:2011Convertor transformers - Transformers for industrial applicationsCurrent
BS 5938-1:1984Cores for inductors and transformers for telecommunications - Methods of measurementCurrent
BS 5938-2:1980Cores for inductors and transformers for telecommunications - Guide to the drafting of performance specificationsCurrent
BS EN 60551:1993Determination of transformer and reactor sound levelsWithdrawn
BS EN 60726:2003Dry-type power transformersWithdrawn
BS 7806:1995Dry-type power transformersWithdrawn
BS IEC 60092-303:1980Electrical installation in ships - Equipment. Transformers for power and lightingCurrent
BS EN 60938-2-2:2000Fixed 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 60938-2-1:2000Fixed 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 DCurrent
BS EN 60938-1:2000Fixed inductors for electromagnetic interference suppression - Generic specificationCurrent
BS EN 60938-2:2000Fixed inductors for electromagnetic interference suppression - Sectional specificationCurrent
BS EN 61605:1997Fixed inductors for use in electronic and telecommunication equipment. Marking codesWithdrawn
BS EN 60296:2004Fluids for electrotechnical applications. Unused mineral insulating oils for transformers and switchgearWithdrawn
BS EN 60296:2012Fluids for electrotechnical applications. Unused mineral insulating oils for transformers and switchgearCurrent
BS 4727-2:Group 04:1991Glossary of electrotechnical, power, telecommunication, electronics, lighting and colour terms. Terms particular to power engineering - Power transformers and reactorsCurrent
BS 4727-2:Group 09:1981Glossary of electrotechnical, power, telecommunication, electronics, lighting and colour terms. Terms particular to power engineering - Transductor terminologyCurrent
BS 6553:1984Guide for selection of fuse links of high-voltage fuses for transformer circuit applicationsWithdrawn
BS 5953-1:1980Guide on power transformers - Application of power transformersWithdrawn
BS 7735:1994Guide to loading of oil-immersed power transformersWithdrawn
BS EN 138101:1997Harmonized 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 DWithdrawn
BS EN 138000:1997Harmonized 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 138100:1997Harmonized 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 60044-7:2000Instrument transformers - Electronic voltage transformersCurrent
BS EN 60044-2:1999Instrument transformers - Inductive voltage transformersWithdrawn
BS EN 60044-1:1999Instrument transformers - Current transformersWithdrawn
BS EN 60044-3:2003Instrument transformers - Combined transformersCurrent
BS EN 60044-6:1999Instrument transformers - Requirements for protective current transformers for transient performanceWithdrawn
DD IEC/PAS 60044-5:2002Instrument transformers - Capacitor voltage transformersWithdrawn
BS EN 61869-1:2009Instrument transformers - General requirementsCurrent
BS EN 61869-3:2011Instrument transformers - Additional requirements for inductive voltage transformers Current
BS EN 61869-2:2012Instrument transformers - Additional requirements for current transformersCurrent
BS EN 61869-5:2011Instrument transformers - Additional requirements for capacitor voltage transformersCurrent
BS 3535-2:1990Isolating transformers and safety isolating transformers - Specification for transformers for reduced system voltageWithdrawn
BS 3535-1:1990Isolating transformers and safety isolating transformers - General requirementsWithdrawn
BS EN 60742:1996Isolating transformers and safety isolating transformers. RequirementsWithdrawn
BS EN 61021-2:1997Laminated core packages for transformers and inductors for use in telecommunication and electronic equipment - Electrical characteristics for cores using YEE 2 laminationsCurrent
BS EN 61021-1:1997Laminated core packages for transformers and inductors for use in telecommunication and electronic equipment - Specification for dimensionsCurrent
BS 6554-1:1984Laminations for transformers and inductors for use in telecommunication and electronic equipment - Specification for dimensions, mechanical characteristics and electrical testingWithdrawn
BS 4533-102-102.6:1990Luminaires. Particular requirements - Specification for luminaires with built-in transformers for filament lampsWithdrawn
BS EN 61596:1997Magnetic oxide EP-cores and associated parts for use in inductors and transformers. DimensionsCurrent
BS EN 60599:1999Mineral oil-impregnated electrical equipment in service. Guide to the interpretation of dissolved and free gases analysisCurrent, Work in Hand
BS EN 50299:2002Oil-immersed cable connection assemblies for transformers and reactors having highest voltage for equipment Um from 72,5 kV to 550 kVCurrent
BS EN 50299-2:2014Oil-immersed cable connection assemblies for transformers and reactors having highest voltage for equipment Um from 72,5 kV to 550 kV - Dry-type cable terminationsCurrent
BS EN 50299-1:2014Oil-immersed cable connection assemblies for transformers and reactors having highest voltage for equipment Um from 72,5 kV to 550 kV - Fluid-filled cable terminationsCurrent
BS EN 50243:2002Outdoor bushings for 24 kV and 36 kV and for 5 kA and 8 kA, for liquid filled transformersCurrent
BS EN 60852-4:1997Outline dimensions of transformers and inductors for use in telecommunication and electronic equipment - Transformers and inductors using YUI-2 laminationsCurrent
BS 6600-10:1985Outline 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-coresCurrent
BS 6600-1:1987Outline dimensions of transformers and inductors for use in telecommunication and electronic equipment - Specification for the outline dimensions of transformers and inductors using YEI-1 laminationsCurrent
BS EN 50216-3:2002Power transformer and reactor fittings - Protective relay for hermetically sealed liquid-immersed transformers and reactors without gaseous cushionCurrent
BS EN 50216-9:2009Power transformer and reactor fittings - Oil-to-water heat exchangersCurrent
BS EN 50216-10:2009Power transformer and reactor fittings - Oil-to-air heat exchangersCurrent
BS EN 50216-4:2015Power transformer and reactor fittings - Basic accessories (earthing terminal, drain and filling devices, thermometer pocket, wheel assembly)Current
BS EN 50216-5:2002Power transformer and reactor fittings - Liquid level, pressure and flow indicators, pressure relief devices and dehydrating breathersCurrent
BS EN 50216-8:2005Power transformer and reactor fittings - Butterfly valves for insulating liquid circuitsCurrent
BS EN 50216-11:2008Power transformer and reactor fittings - Oil and winding temperature indicatorsCurrent
BS EN 50216-12:2011Power transformer and reactor fittings - FansCurrent
BS EN 60076-3:2013Power transformers - Insulation levels, dielectric tests and external clearances in airCurrent
BS EN 60076-16:2011Power transformers - Transformers for wind turbines applicationsCurrent
BS EN 60076-6:2008Power transformers - ReactorsCurrent
BS EN 60076-2:2011Power transformers - Temperature rise for liquid-immersed transformersCurrent
BS EN 60076-1:1997Power transformers - GeneralWithdrawn
BS 171-2:1978Power transformers - Specification for temperature rise requirementsWithdrawn
BS EN 60076-14:2013Power transformers - Liquid-immersed power transformers using high-temperature insulation materialsCurrent
BS IEC 60076-21:2011Power transformers - Standard requirements, terminology, and test code for step-voltage regulators Current
BS EN 60076-13:2006Power transformers - Self-protected liquid-filled transformersCurrent
BS EN 60076-11:2004Power transformers - Dry-type transformersCurrent
BS EN 60076-5:2006Power transformers - Ability to withstand short-circuitCurrent
BS IEC 60076-7:2005Power transformers - Loading guide for oil-immersed power transformersCurrent, Work in Hand
BS EN 60076-4:2002Power transformers - Guide to the lightning impulse and switching impulse testing. Power transformers and reactorsCurrent
BS EN 60076-2:1997Power transformers - Temperature riseWithdrawn
BS EN 60076-5:2001Power transformers - Ability to withstand short circuitWithdrawn
DD IEC/TS 60076-14:2009Power transformers - Design and application of liquid-immersed power transformers using high-temperature insulation materialsCurrent
BS EN 60076-10:2001Power transformers - Determination of sound levelsCurrent, Work in Hand
BS IEC 60076-8:1997Power transformers - Application guideCurrent
BS EN 60076-3:2001Power transformers - Insulation levels, dielectric tests and external clearances in airCurrent
PD IEC/TS 60076-19:2013Power transformers - Rules for the determination of uncertainties in the measurement of the losses on power transformers and reactorsCurrent
BS 171-1:1978Power transformers - GeneralWithdrawn
BS 171-4:1978Power transformers - Specification for tappings and connectionsWithdrawn
BS 171-5:1978Power transformers - Specification for ability to withstand short circuitWithdrawn
BS EN 60076-18:2012Power transformers - Measurement of frequency responseCurrent
BS EN 60076-1:2011Power transformers - General Current
BS 171-3:1987Power transformers - Specification for insulation levels and dielectric testsWithdrawn
BS EN 50216-7:2002Power transformers and reactor fittings - Electric pumps for transformer oilCurrent
BS EN 50216-1:2002Power transformers and reactor fittings - GeneralCurrent
BS EN 50216-4:2002Power transformers and reactor fittings - Basic accessories (earthing terminal, drain and filling devices, thermometer pocket, wheel assembly)Current
BS EN 50216-6:2002Power transformers and reactor fittings - Cooling equipment. Removable radiators for oil-immersed transformersCurrent
BS EN 50216-2:2002Power transformers and reactor fittings - Gas and oil actuated relay for liquid immersed transformers and reactors with conservatorCurrent
BS EN 62041:2003Power transformers, power supply units, reactors and similar products. EMC requirementsWithdrawn
BS EN 50152-3-3:2001Railway 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 transformersCurrent, Work in Hand
BS EN 50152-3-2:2001Railway 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 transformersCurrent, Work in Hand
BS EN 50329:2003+A1:2010Railway applications. Fixed installations. Traction transformersCurrent
DD CLC/TS 50537-4:2010Railway 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 vehiclesCurrent
DD CLC/TS 50537-1:2010Railway applications. Mounted parts of the traction transformer and cooling system - HV bushing for traction transformersCurrent
DD CLC/TS 50537-2:2010Railway applications. Mounted parts of the traction transformer and cooling system - Pump for insulating liquid for traction transformers and reactorsCurrent
DD CLC/TS 50537-3:2010Railway applications. Mounted parts of the traction transformer and cooling system - Water pump for traction convertersCurrent
BS EN 60310:2004Railway applications. Traction transformers and inductors on board rolling stockCurrent, Work in Hand
BS EN 60310:1997Railway applications. Traction transformers and inductors on rolling stockWithdrawn
BS EN 60289:1995ReactorsWithdrawn
BS EN ISO 5826:2003Resistance welding equipment. Transformers. General specifications applicable to all transformersCurrent, Work in Hand
BS EN ISO 5826:2014Resistance welding equipment. Transformers. General specifications applicable to all transformersCurrent
BS 4819-1:1989Resistance welding water-cooled transformers of the press package and portable types. - Specification for press-package transformersCurrent
BS 4819-2:1989Resistance welding water-cooled transformers of the press-package and portable types. - Specification for portable transformersCurrent
BS EN ISO 22829:2008Resistance welding. Transformer-rectifier for welding guns with integrated transformers. Transformer- rectifier units operating at 1000 Hz frequencyCurrent
BS EN 61558-1:2005+A1:2009Safety of power transformers, power supplies, reactors and similar products - General requirements and testsCurrent
BS EN 61558-2-2:2007Safety of power transformers, power supplies, reactors and similar products - Particular requirements and tests for control transformers and power supplies incorporating control transformersCurrent
BS EN 61558-2-1:2007Safety of power transformers, power supplies, reactors and similar products - Particular requirements and tests for separating transformers and power supplies incorporating separating transformers for general applicationsCurrent
BS EN 61558-2-7:2007Safety of power transformers, power supplies, reactors and similar products - Particular requirements and tests for transformers and power supplies for toysCurrent
BS EN 61558-2-7:1998Safety of power transformers, power supply units and similar - Particular requirements for transformers for toysWithdrawn
BS EN 61558-2-15:2001Safety of power transformers, power supply units and similar - Particular requirements for isolating transformers for the supply of medical locationsWithdrawn
BS EN 61558-1:1998Safety of power transformers, power supply units and similar - General requirements and testsCurrent
BS EN 61558-2-23:2001Safety of power transformers, power supply units and similar - Particular requirements for transformers for construction sitesWithdrawn
BS EN 61558-2-2:1998Safety of power transformers, power supply units and similar - Particular requirements for control transformersWithdrawn
BS EN 61558-2-19:2001Safety of power transformers, power supply units and similar - Particular requirements for perturbation attenuation transformersWithdrawn
BS EN 61558-2-20:2001Safety of power transformers, power supply units and similar - Particular requirements for small reactorsWithdrawn
BS EN 61558-2-8:1999Safety of power transformers, power supply units and similar - Particular requirements for bell and chime transformersWithdrawn
BS EN 61558-2-13:2000Safety of power transformers, power supply units and similar - Particular requirements for auto-transformers for general useWithdrawn
BS EN 61558-2-3:2000Safety of power transformers, power supply units and similar - Particular requirements for ignition transformers for gas and oil burnersWithdrawn
BS EN 61558-2-1:1998Safety of power transformers, power supply units and similar - Particular requirements for separating transformers for general useWithdrawn
BS EN 61558-2-4:1998Safety of power transformers, power supply units and similar - Particular requirements for isolating transformers for general useWithdrawn
BS EN 61558-2-6:1998Safety of power transformers, power supply units and similar - Particular requirements for safety isolating transformers for general useWithdrawn
BS EN 61558-2-17:1998Safety of power transformers, power supply units and similar - Particular requirements for transformers for switch mode power suppliesWithdrawn
BS EN 61558-2-5:1998Safety of power transformers, power supply units and similar - Particular requirements for shaver transformers and shaver supply unitsWithdrawn
BS EN 61558-2-12:2001Safety of power transformers, power supply units and similar - Particular requirements for constant voltage transformersWithdrawn
BS EN 61558-2-9:2003Safety of power transformers, power supply units and similar products - Particular requirements for transformers for class III handlamps for tungsten filament lampsWithdrawn
BS EN 61558-2-14:2013Safety of transformers, reactors, power supply units and combination thereof - Particular requirements and tests for variable transformers and power supply units incorporating variable transformersCurrent
BS EN 61558-2-9:2011Safety 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 lampsCurrent
BS EN 61558-2-15:2012Safety 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 61558-2-12:2011Safety of transformers, reactors, power supply units and combinations thereof - Particular requirements and tests for constant voltage transformers and power supply units for constant voltageCurrent
BS EN 61558-2-20:2011Safety of transformers, reactors, power supply units and combinations thereof - Particular requirements and tests for small reactorsCurrent
BS EN 61558-2-3:2010Safety of transformers, reactors, power supply units and combinations thereof - Particular requirements and tests for ignition transformers for gas and oil burnersCurrent
BS EN 61558-2-5:2010Safety 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 unitsCurrent
BS EN 61558-2-10:2014Safety of transformers, reactors, power supply units and combinations thereof - Particular requirements and tests for separating transformers with high insulation level and separating transformers with output voltages exceeding 1 000 VCurrent
BS EN 61558-2-8:2010Safety of transformers, reactors, power supply units and combinations thereof - Particular requirements and tests for transformers and power supply units for bells and chimesCurrent
BS EN 61558-2-23:2010Safety of transformers, reactors, power supply units and combinations thereof - Particular requirements and tests for transformers and power supply units for construction sitesCurrent
BS EN 61558-2-26:2013Safety of transformers, reactors, power supply units and combinations thereof - Particular requirements and tests for transformers and power supply units for saving energy and other purposesCurrent
BS EN 62041:2010Safety of transformers, reactors, power supply units and combinations thereof. EMC requirementsCurrent, Work in Hand
BS EN 61558-2-16:2009+A1:2013Safety of transformers, reactors, power supply units and similar products for supply voltages up to 1 100 V - Particular requirements and tests for switch mode power supply units and transformers for switch mode power supply unitsCurrent
BS EN 61558-2-6:2009Safety 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 transformersCurrent
BS EN 61558-2-13:2009Safety 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 transformersCurrent
BS EN 61558-2-4:2009Safety 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 transformersCurrent
BS 9741:1986Sectional specification for inductors of assessed quality for use in electronic equipment for capability approvalCurrent
BS 9727:1985Sectional specification for power transformers of assessed quality for use in electronic equipment for capability approvalCurrent
BS 9733:1985Sectional specification for pulse transformers of assessed quality for use in electronic equipment for capability approvalCurrent
BS 9734:1978Sectional specification for pulse transformers of assessed quality for use in electronic equipment: full assessment levelCurrent
BS 9721:1985Sectional specification for signal transformers of assessed quality for use in electronic equipment for capability approvalCurrent
BS EN 60146-1-3:1993Semiconductor convertors. General requirements and line commutated convertors - Transformers and reactorsCurrent
BS 2538:1954Specification for air-cooled flameproof single-phase lighting transformer units supplied from high voltage systemsWithdrawn
BS 7616:1993Specification for bushings for liquid filled transformers above 1 kV and up to 36 kVWithdrawn
BS 2562:1979Specification for cable boxes for transformers and reactorsCurrent
BS 3938:1973Specification for current transformersWithdrawn
BS 7626:1993Specification for current transformersWithdrawn
BS 9720:1989Specification for custom-built transformers and inductors of assessed quality: generic data and methods of testCurrent
BS 5067:1985Specification for flameproof transformers for use in minesCurrent
BS 6436:1984Specification for ground mounted distribution transformers for cable box or unit substation connectionWithdrawn
BS 7729:1994Specification for instrument transformers. Three-phase voltage transformers for voltage levels having Um up to 52 kVWithdrawn
BS 171:1970Specification for power transformersWithdrawn
BS 7452:1991Specification for separating transformers, autotransformers, variable transformers and reactorsWithdrawn
BS 5347:1976Specification for silicon-iron strip-wound cores for use in transformers and inductors for telecommunications and electronic equipmentCurrent
BS 7682:1993Specification for stationary transformers in traction systemsWithdrawn
BS 7565:1992Specification for traction transformers and inductorsWithdrawn
BS 7125:1989Specification for transformers for resistance welding machinesWithdrawn
BS EN 61050:1992Specification for transformers for tubular discharge lamps having a no-load output voltage exceeding 1000 V (generally called neon-transformers). General and safety requirementsCurrent
BS 3399:1961Specification for transformers for use in shipsWithdrawn
BS 3941:1975Specification for voltage transformersWithdrawn
BS 7625:1993Specification for voltage transformersWithdrawn
BS EN 60214-1:2003Tap-changers - Performance requirements and test methodsWithdrawn
BS EN 60214-1:2014Tap-changers - Performance requirements and test methodsCurrent
BS EN 50541-2:2013Three phase dry-type distribution transformers 50 Hz, from 100 kVA to 3 150 kVA, with highest voltage for equipment not exceeding 36 kV - Determination of loadability of a transformer loaded with non-sinusoidal currentCurrent
BS EN 50541-1:2011Three phase dry-type distribution transformers 50 Hz, from 100 kVA to 3150 kVA, with highest voltage for equipment not exceeding 36 kV - General requirementsCurrent
BS 7821-3:1995Three 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 kVWithdrawn
BS 7821-1:1995Three 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 kVWithdrawn
BS 7821-4:1995Three 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 currentsWithdrawn
BS 7821-6:2002Three 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 tanksWithdrawn
BS 7821-2.3:1998Three 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 7821-2.1Withdrawn
BS 7821-2.1:1995Three 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 requirementsWithdrawn
BS 7821-2.2:1998Three 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 7821-2.1Withdrawn
BS 7844-3:1998Three-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 currentWithdrawn
BS 7844-1:1996Three-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 kVWithdrawn
BS 7844-2:1996Three-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 kVWithdrawn
BS EN 50464-1:2007+A1:2012Three-phase oil-immersed distribution transformers 50 Hz, from 50 kVA to 2 500 kVA with highest voltage for equipment not exceeding 36 kV - General requirementsCurrent
BS EN 50464-4:2007+A1:2011Three-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 50464-2-3:2007Three-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 50464-2-1Current
BS EN 50464-3:2007Three-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 currentsCurrent
BS EN 50464-2-2:2007Three-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 50464-2-1Current
BS EN 50464-2-1:2007Three-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 requirementsCurrent
BS EN 61248-7:1998Transformers 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 procedureCurrent
BS EN 61248-6:1997Transformers and inductors for use in electronic and telecommunication equipment - Sectional specification for inductors on the basis of the capability approval procedureCurrent
BS EN 61248-5:1997Transformers and inductors for use in electronic and telecommunication equipment - Sectional specification for pulse transformers on the basis of the capability approval procedureCurrent
BS EN 61248-4:1997Transformers 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 procedureCurrent
BS EN 61248-3:1997Transformers and inductors for use in electronic and telecommunication equipment - Sectional specification for power transformers on the basis of the capability approval procedureCurrent
BS EN 61248-1:1997Transformers and inductors for use in electronic and telecommunication equipment - Generic specificationCurrent
BS EN 61248-2:1997Transformers and inductors for use in electronic and telecommunication equipment - Sectional specification for signal transformers on the basis of the capability approval procedureCurrent
BS EN 61007:1997Transformers and inductors for use in electronic and telecommunication equipment. Measuring methods and test proceduresCurrent

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