British Standards Institution - Committee

Please note, we are experiencing intermittent issues on the platform which we are investigating. You may experience issues with submitting comments. If you do encounter issues, please resubmit your comment. Please accept our apologies for any inconvenience caused

We use cookies to give you the best experience and to help improve our website

Find out what cookies we use and how to disable them

EPL/51 - Transformers, inductors, magnetic components and ferrite materials

Sector: Manufacturing

Categories: Electric furnaces | Electrical equipment. Special conditions. Other | Electromechanical components. Other | Wires | Connecting devices | Electricity. Magnetism. Other | Components. Magnetic | Capacitors. General | Electroacoustics | Networking | Measurement. Acoustics | Television and radio broadcasting | Measurement. Electrical and magnetic | Relays | Fibre optic systems. General | Sacks. Bags | Lamps. Caps and holders | Medical equipment. Diagnostic | Electricity. Magnetism. General | Physics. Chemistry | Magnetic materials | Transformers. Reactors | Fibres and cables | Audio, video and audiovisual equipment. Other | Electric tools | Insulating materials | Power transmission and distribution lines | Components. Electrical equipment | Audio, video and audiovisual systems. General | Electric shock protection. Live working | Nickel and chromium products | Video systems | Steels. Magnetic properties | Electronic components. General | Telecommunications. General | Components. Electrical equipment. Other | Lamps. Fluorescent and discharge | Components and accessories. General | | Industrial process measurement and control | Components. Electrical equipment. General | Electrical engineering | Automatic controls for household use | Immunity | Electrical engineering. General

Overview: Under the direction of the Standards Policy and Strategy Committee, is responsible for the UK input to the work of IEC/TC51 and CLC/SR 51

Committee standards activity

In Progress (36)

Show entries

Reference	Standards description	Status ? The standards development process is divided into chronological stages: Proposal; Drafting; Public comment; Comment resolution; Approval; Published standard.
PNW 51-1512 ED1:	Magnetic powder cores Guidelines on dimensions and limits of surface irregularities - Part 9: Ellipse-cores Categories: Information management \| Standardization. General rules Proposal begins : 2024-07-15	Proposal
PNW 51-1427 ED1:	High frequency inductive components - Electrical characteristics and measuring methods - Part 3: AC loss measured by sinusoidal wave of inductors for DC-to-DC converters Categories: Information management \| Standardization. General rules \| Engineering \| Electrical engineering \| Components. Electrical equipment \| Components. Magnetic Proposal begins : 2022-12-13	Proposal
PD IEC/TR 63307 Ed.2.0	Measurement methods of the complex relative permeability and permittivity of noise suppression sheet Categories: Unclassified documents Drafting begins : 2025-07-11	Drafting
PD IEC/TR 63307 Ed.2.0	Measurement methods of the complex relative permeability and permittivity of noise suppression sheet Categories: Unclassified documents Drafting begins : 2025-07-11	Drafting
IEC 51/1431/NP	Ferrite cores - Guidelines on dimensions and the limits of surface irregularities - Part 15: U-cores Categories: Information management \| Standardization. General rules \| Engineering \| Electrical engineering \| Magnetic materials \| Components. Electrical equipment Proposal begins : 2023-01-18	Proposal
BS IEC IEC 62025-1 ED3	High frequency inductive components - Non-electrical characteristics and measuring methods. - Part 1: Fixed, surface mounted inductors for use in electronic and telecommunication equipment Categories: Components. Magnetic Public comment begins : 2024-05-15	Public comment
BS IEC 63361 Ed.1.0	Transformers and inductors - Near Magnetic and Electric Fields Characterization Categories: Components. Magnetic \| Transformers. Reactors Public comment begins : 2024-10-21	Public comment
BS IEC 63093-5 Ed2	BS EN 63093-5 Ed2 Ferrite cores - Guidelines on dimensions and the limits of surface irregularities. Part 5: EP-cores and associated parts for use in inductors and transformers Categories: Components. Magnetic Comment resolution begins : 2025-11-20	Comment resolution
BS IEC 63093-4 Ed2	BS EN 63093-4 Ed2 Ferrite cores - Guidelines on dimensions and the limits of surface irregularities. Part 4: RM-cores Categories: Components. Magnetic Comment resolution begins : 2025-12-22	Comment resolution
BS EN IEC/IEEE 61007-389 Ed.1.0	BS EN 61007-389 Ed.1.0 Transformers and inductors for use in electronic and telecommunication equipment - Measuring methods and test procedures Categories: Components. Magnetic \| Transformers. Reactors Comment resolution begins : 2025-11-03	Comment resolution

Show entries

Reference	Standards description	Status ? The standards development process is divided into chronological stages: Proposal; Drafting; Public comment; Comment resolution; Approval; Published standard.
PD IEC/TR 63090:2017	Dimensional tolerances of ferrite cores Categories: Components. Magnetic Published standard begins : 2017-08-11	Published standard
PD IEC TR 63307:2020	Measurement methods of the complex relative permeability and permittivity of noise suppression sheet Categories: Components. Magnetic Published standard begins : 2020-12-07	Published standard
BS IEC 63182-6:2025	Magnetic powder cores. Guidelines on dimensions and the limits of surface irregularities. EQ-cores Categories: Components. Magnetic Published standard begins : 2025-09-03	Published standard
BS EN IEC 63300:2023	Test methods for electrical and magnetic properties of magnetic powder cores Categories: Measurement. Electrical and magnetic \| Magnetic materials \| Components. Magnetic Published standard begins : 2023-08-30	Published standard
BS EN IEC 63299:2022	Classification of magnetic powder cores Categories: Magnetic materials \| Components. Magnetic Published standard begins : 2022-10-31	Published standard
BS EN IEC 63182-5:2022	Magnetic powder cores. Guidelines on dimensions and the limits of surface irregularities. Cylinder-cores Categories: Components. Magnetic Published standard begins : 2022-06-23	Published standard
BS EN IEC 63182-4:2022	Magnetic powder cores. Guidelines on dimensions and the limits of surface irregularities. Block-cores Categories: Components. Magnetic Published standard begins : 2022-06-23	Published standard
BS EN IEC 63182-3:2022	Magnetic powder cores. Guidelines on dimensions and the limits of surface irregularities. E-cores Categories: Components. Magnetic \| Steels. Magnetic properties Published standard begins : 2022-03-03	Published standard
BS EN IEC 63182-2:2020	Magnetic powder cores. Guidelines on dimensions and the limits of surface irregularities. Ring-cores Categories: Components. Magnetic Published standard begins : 2020-11-18	Published standard
BS EN IEC 63182-1:2020	Magnetic powder cores. Guidelines on dimensions and the limits of surface irregularities. General specification Categories: Components. Magnetic Published standard begins : 2020-07-29	Published standard

Show entries

Reference	Standards description	Status ? The standards development process is divided into chronological stages: Proposal; Drafting; Public comment; Comment resolution; Approval; Published standard.
BS EN IEC 63093-7:2018	Ferrite cores. Guidelines on dimensions and the limits of surface irregularities. EER-cores Categories: Components. Magnetic Withdrawn begins : 2019-05-24	Withdrawn
BS EN IEC 63093-13:2019	Ferrite cores. Guidelines on dimensions and the limits of surface irregularities. PQ-cores Categories: Components. Magnetic Withdrawn begins : 2024-06-13	Withdrawn
BS EN IEC 61007:2020	Transformers and inductors for use in electronic and telecommunication equipment. Measuring methods and test procedures Categories: Components. Magnetic \| Transformers. Reactors Withdrawn begins : 2021-07-12	Withdrawn
BS EN 62333-2:2006	Noise suppression sheet for digital devices and equipment. Measuring methods Categories: Components. Magnetic Withdrawn begins : 2016-02-08	Withdrawn
BS EN 62323:2005	Dimensions of half pot-cores made of ferrite for inductive proximity switches Categories: Components. Magnetic Withdrawn begins : 2020-05-26	Withdrawn
BS EN 62317-9:2006	Ferrite cores. Dimensions. Planar cores Categories: Components. Magnetic Withdrawn begins : 2020-06-17	Withdrawn
BS EN 62317-9:2006	Ferrite cores. Dimensions. Planar cores Categories: Components. Magnetic Withdrawn begins : 2007-05-29	Withdrawn
BS EN 62317-8:2006	Ferrite cores. Dimensions. E-cores Categories: Components. Magnetic Withdrawn begins : 2019-09-03	Withdrawn
BS EN 62317-7:2005	Ferrite cores. Dimensions. EER-cores Categories: Components. Magnetic Withdrawn begins : 2006-01-23	Withdrawn
BS EN 62317-6:2016	Ferrite cores. Dimensions. ETD-cores for use in power supplies Categories: Components. Magnetic Withdrawn begins : 2019-09-03	Withdrawn