IEC 62271-202:2022/COR1:2023

IEC 62271-202:2022/COR1:2023 is a corrigendum connected to High-voltage switchgear and controlgear - Part 202: AC prefabricated substations for rated voltages above 1 kV and up to and including 52 kV, and it is relevant for teams that rely on accurate technical references during design, review, and procurement. As a supporting document to IEC 62271-202:2022, it helps maintain document accuracy for AC prefabricated substation applications where technical compliance, verification activities, and engineering documentation must remain aligned with the parent text. It is useful in workflows where precise interpretation of the compliance reference matters.

Overview of IEC 62271-202:2022/COR1:2023

This corrigendum is part of the IEC 62271-202 series and serves as a modification or correction linked to the 2022 parent publication. In practical terms, IEC 62271-202:2022/COR1:2023 supports technical review of AC prefabricated substations for medium-voltage duty within the stated voltage range, helping users work from a corrected reference when preparing product evaluation, conformity assessment, or internal quality workflows. For engineering teams, the value is in preserving consistency between specifications, test records, and procurement documentation.

Compliance applications of IEC 62271-202:2023/COR1:2023

IEC 62271-202:2022/COR1:2023 is typically consulted where AC prefabricated substations are specified, reviewed, or assessed against documented requirements. It may be used by manufacturers, laboratories, utilities, consultants, and procurement teams during technical validation, tender preparation, and compliance workflows. In these contexts, the corrigendum helps ensure the parent document is read accurately before testing, design confirmation, or project acceptance activities proceed. It is therefore a practical supporting reference for regulatory preparation and structured engineering review.

Importance of compliance with IEC 62271-202:2022/COR1:2023

Using the corrected reference matters because small document errors can affect safety checks, engineering validation, and conformity assessment preparation for high-voltage substation solutions. For procurement and quality assurance teams, a corrigendum helps reduce the risk of basing decisions on outdated or incorrect wording. It also supports more consistent technical assessment across design, test planning, and acceptance review, especially where operational consistency and traceability are important. In that sense, IEC 62271-202:2022/COR1:2023 strengthens the reliability of the parent technical document in compliance-focused workflows.

• Supporting corrigendum for IEC 62271-202:2022, not a standalone technical specification
• Relevant to AC prefabricated substations for rated voltages above 1 kV and up to and including 52 kV
• Useful in technical review, procurement screening, and documentation control
• Helps maintain accuracy for testing workflows, conformity assessment, and compliance preparation