IEC TR 61869-100:2017/COR1:2023

IEC TR 61869-100:2017/COR1:2023 is a corrigendum linked to the guidance on applying current transformers in power system protection, and it should be reviewed alongside IEC TR 61869-100:2017. As a supporting correction document, it helps users apply the technical guidance with greater accuracy during engineering review, procurement checks, and compliance preparation. For teams working with instrument transformers in protection schemes, the updated reference can support more reliable interpretation of the parent document and reduce the risk of using outdated or inconsistent wording in technical documentation.

Purpose of IEC TR 61869-100:2017/COR1:2023

The purpose of IEC TR 61869-100:2017/COR1:2023 is to correct and refine the parent technical report so that guidance on current transformers for power system protection is interpreted consistently. In practice, a corrigendum serves as a modifying reference rather than a standalone engineering specification. That makes it relevant for design teams, technical reviewers, and conformity assessment personnel who rely on accurate document control when evaluating protection-related instrument transformer applications, verification activities, and documented evaluation processes.

Compliance applications of IEC TR 61869-100:2017/COR1:2023

IEC TR 61869-100:2017/COR1:2023 is typically used when organizations need to confirm that their internal engineering documentation, test plans, or procurement references align with the corrected guidance for current transformers in power system protection. It may be consulted during laboratory evaluation, technical assessment, and quality workflows for electrical equipment used in protection systems. The corrigendum can also support regulatory preparation and product evaluation by helping teams avoid discrepancies between the parent report and the revised wording.

Benefits of IEC TR 61869-100:2017/COR1:2023

Using IEC TR 61869-100:2017/COR1:2023 helps improve document accuracy, which is important for safety, interoperability, and risk management in protection applications. For procurement and engineering teams, a corrected technical reference supports more dependable technical validation and reduces the chance of misinterpretation during specification review. It can also improve testing consistency and conformity assessment preparation by keeping evaluation criteria aligned with the latest published correction to the parent report.

• Corrective companion to the parent guidance on current transformers for power system protection
• Useful for document control, technical review, and engineering specification alignment
• Supports consistent evaluation during testing workflows and laboratory assessment
• Relevant to compliance workflows for instrument transformer and protection-system projects
• Helps reduce interpretation errors in procurement and conformity assessment preparation