IEC TS 62993:2017/COR1:2018

IEC TS 62993:2017/COR1:2018 provides a corrigendum to Corrigendum 1 - Guidance for determination of clearances, creepage distances and requirements for solid insulation for equipment with a rated voltage above 1 000 V AC and 1 500 V DC, and up to 2 000 V AC and 3 000 V DC. For engineering teams and compliance reviewers, IEC TS 62993:2017/COR1:2018 is relevant as a supporting technical document tied to the parent publication, helping ensure the correct interpretation of insulation-related guidance used in high-voltage equipment evaluation, verification activities, and documented assessment workflows.

Overview of IEC TS 62993:2017/COR1:2018

This corrigendum is connected to the parent technical specification and is intended to modify or clarify its guidance rather than stand alone as a full technical reference. The subject matter focuses on clearances, creepage distances, and solid insulation requirements for equipment operating above 1 000 V AC and 1 500 V DC, up to 2 000 V AC and 3 000 V DC. In practice, that makes IEC TS 62993:2017/COR1:2018 useful where design review, insulation coordination, and technical validation depend on the latest corrected text.

Compliance applications of IEC TS 62993:2017/COR1:2018

Organizations may use IEC TS 62993:2017/COR1:2018 during product evaluation, laboratory evaluation, and conformity assessment preparation for electrical equipment in higher-voltage applications. It is particularly relevant where insulation distances and solid insulation checks are part of procurement review, certification files, or internal quality workflows. Technical teams often rely on corrigenda like this to align design documentation, test plans, and compliance references with the corrected guidance in the parent document, reducing ambiguity during regulatory preparation and engineering documentation control.

Importance of compliance with IEC TS 62993:2017/COR1:2018

Using the corrigendum alongside the parent document supports safer and more consistent technical assessment of insulation-related requirements. That matters because clearances, creepage distances, and solid insulation provisions can affect electrical safety, performance reliability, and test repeatability. For manufacturers, test laboratories, and procurement teams, the corrected guidance can improve consistency in verification activities and reduce the risk of avoidable nonconformities. It also supports better documentation for conformity assessment and helps maintain operational consistency across engineering and compliance workflows.

• Supporting reference for corrected guidance linked to the parent technical specification
• Relevant to insulation coordination, clearances, creepage distances, and solid insulation review
• Useful for engineering documentation, test planning, and compliance file preparation
• Helps align technical validation and conformity assessment activities with the revised text