IEC 62271-103:2021/COR1:2025

IEC 62271-103:2021/COR1:2025 is a corrigendum to the document for high-voltage switchgear and controlgear covering alternating current switches for rated voltages above 1 kV up to and including 52 kV. As a supporting reference to IEC 62271-103:2021, it is relevant when engineering teams, laboratories, and procurement reviewers need to align technical documentation with the corrected text before proceeding with evaluation, conformity assessment, or compliance workflows. For organizations working with medium-voltage switching equipment, this corrigendum helps maintain technical accuracy in documented requirements.

What is IEC 62271-103:2021/COR1:2025?

IEC 62271-103:2021/COR1:2025 is a corrigendum connected to the parent document IEC 62271-103:2021, not a standalone product specification. Its role is to correct or clarify the published requirements for alternating current switches used in high-voltage switchgear and controlgear applications within the stated voltage range. In practice, it supports technical review, document control, and regulatory preparation by helping users work from the corrected reference when verifying design documentation, test plans, or procurement records.

Applications of IEC 62271-103:2021/COR1:2025

This corrigendum is most useful in engineering documentation and testing workflows involving AC switching equipment for power distribution and related electrical installations. It may be referenced by manufacturers, test laboratories, utilities, and compliance teams during product evaluation, type-test coordination, or contract specification review. Where IEC 62271-103:2021 is already part of a conformity assessment process, IEC 62271-103:2021/COR1:2025 helps ensure the technical file reflects the corrected wording and supports consistent interpretation across stakeholders.

Why is IEC 62271-103:2021/COR1:2025 important?

Accuracy in standards-based work is essential for safety, interoperability, and risk management, especially for high-voltage electrical equipment. By linking directly to the parent document, this corrigendum can help reduce errors in technical validation, avoid misapplication of requirements, and improve consistency across testing workflows and quality assurance activities. It is particularly relevant when teams are preparing compliance evidence, reviewing supplier documentation, or aligning engineering specifications with the latest corrected publication.

• Supports corrected reference handling for high-voltage AC switch documentation.
• Useful for conformity assessment, test planning, and technical review activities.
• Helps maintain consistency between engineering documentation and procurement records.
• Relevant to compliance workflows involving switchgear and controlgear for voltages above 1 kV up to 52 kV.