IEC 62054-21:2004/AMD1:2017/COR1:2018
Corrigendum 1 - Amendment 1 - Electricity metering (A.C.) - Tariff and load control - Part 21: Particular requirements for time switches
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About This Item
IEC 62054-21:2004/AMD1:2017/COR1:2018 is a supporting technical document for electricity metering (A.C.) tariff and load control, focused on particular requirements for time switches. It is relevant where time-based switching functions must be evaluated against the parent document, IEC 62054-21:2004, during engineering review, testing workflows, or procurement checks. As a corrigendum and amendment package, it helps ensure the technical reference used for conformity assessment and documented evaluation reflects the correct, updated requirements for metering-related time control equipment.
What is IEC 62054-21:2004/AMD1:2017/COR1:2018?
This document is a modifying reference connected to IEC 62054-21:2004, rather than a standalone product specification. Based on the title, it relates to particular requirements for time switches used in A.C. electricity metering applications for tariff and load control. In practice, it is used to clarify or adjust the parent technical content so that manufacturers, test laboratories, and compliance teams can work from the corrected requirements during technical validation, specification review, and conformity assessment preparation.
Applications of IEC 62054-21:2004/AMD1:2017/COR1:2018
IEC 62054-21:2004/AMD1:2017/COR1:2018 is typically consulted in workflows involving electricity metering equipment that includes time-switch functionality for tariff switching or load management. It may be relevant to product evaluation, type testing, quality workflows, and regulatory preparation where the timing behavior of control equipment must be checked against the parent document. Organizations involved in meter design, certification support, or technical documentation often use it to confirm that the applicable requirements are current and correctly interpreted.
Why is IEC 62054-21:2004/AMD1:2017/COR1:2018 important?
This reference matters because even small corrections or amendments can affect compliance decisions, test interpretation, and procurement acceptance. For teams performing technical review or laboratory evaluation, using the updated reference helps reduce risk of misapplication and improves consistency across verification activities. It also supports operational consistency in engineering documentation, especially where tariff and load control functions depend on accurate time-switch requirements. In regulated or contract-driven environments, that can be important for conformity assessment, quality assurance, and avoiding avoidable redesign or retesting.
- Supporting reference for corrected requirements linked to IEC 62054-21:2004
- Relevant to A.C. electricity metering systems with tariff and load control functions
- Useful for compliance workflows, test planning, and technical documentation control
- Helps align laboratory evaluation and product assessment with the updated text
- Publication Date: 2018-03-19
- Standard Status: Amendment
- Publisher: IEC
- Edition: 1
- This Version: IEC 62054-21:2004 (2018-03-19)
- Previous Version: IEC 62054-21:2004 (2017-01-30)
- Previous Version: IEC 62054-21:2004 (2004-05-18)
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