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IEC

WG 4 - TC 25/WG 4

TC 25/WG 4

General Information

Status
Active
Work Field
Information technology
Parent
TC 25 - Quantities and units

Frequently Asked Questions

WG 4 is a Technical Committee within the International Electrotechnical Commission (IEC). It is named "TC 25/WG 4". This committee has published 460 standards.

WG 4 develops IEC standards in the area of Information technology. Currently, there are 460 published standards from this technical committee.

The International Electrotechnical Commission (IEC) is the world's leading organization for the preparation and publication of international standards for electrical, electronic, and related technologies. Founded in 1906, the IEC provides a global platform for companies, industries, and governments to meet, discuss, and develop the international standards they require.

A Technical Committee (TC) in IEC is a group of experts responsible for developing international standards in a specific technical area. TCs are composed of national member body delegates and work through consensus to create standards that meet global industry needs. Each TC may have subcommittees (SCs) and working groups (WGs) for specialized topics.

Standardization Organization
ICS
Directive
Mandate
50
IEC
IEC 62428:2008(Main)
Electric power engineering - Modal components in three-phase a.c. systems - Quantities and transformations

IEC 62428:2008 deals with transformations from original quantities into modal quantities for the widely used three-phase a.c. systems in the field of electric power engineering. The examination of operating conditions and transient phenomena in three-phase a.c. systems becomes more difficult by the resistive, inductive or capacitive coupling between the phase elements and line conductors. Calculation and description of these phenomena in three-phase a.c. systems are easier if the quantities of the coupled phase elements and line conductors are transformed into modal quantities. The calculation becomes very easy if the transformation leads to decoupled modal systems. The original impedance and admittance matrices are transformed to modal impedance and admittance matrices. In the case of decoupling of the modal quantities, the modal impedance and admittance matrices become diagonal matrices.

  • Standard
    45 pages
    English and French language
    sale 15% off
IEC
IEC 60027-4:2006(Main)
Letter symbols to be used in electrical technology - Part 4: Rotating electric machines

This part of IEC 60027 is applicable to rotating electric machines. It gives names and symbols for quantities and units.

  • Standard
    41 pages
    English and French language
    sale 15% off
50