IEEE C37.09-1999/Cor 1-2007

C37.09-1999/Cor 1-2007 is a corrigendum to the C37.09 standard, providing a focused correction to the technical requirements used in power, energy, and industry applications. As an English-language standards document, it helps clarify the original specification so engineers, specifiers, and compliance teams can apply the referenced requirements with greater confidence. In practice, C37.09-1999/Cor 1-2007 supports more accurate interpretation of the base standard and reduces the risk of using outdated or inconsistent guidance.

C37.09-1999/Cor 1-2007 overview

This corrigendum is intended to amend or clarify the underlying C37.09-1999 standard rather than introduce a separate technical framework. Its role is to keep the specification aligned with the intended requirements for electrical power applications, where precise language can affect design, testing, and acceptance decisions. For organizations working with the original standard, C37.09-1999/Cor 1-2007 is useful for identifying the corrected text that should be applied in technical documentation, procurement records, and engineering reviews.

Typical use cases

C37.09-1999/Cor 1-2007 is commonly consulted when reviewing equipment specifications, evaluating compliance statements, or resolving questions about the corrected wording of the base standard. It may be relevant for power system engineering teams, utility-focused procurement, and industrial projects that depend on accurate standard interpretation. The corrigendum is especially useful during document control, specification comparison, and technical verification work where even small wording changes can affect ratings, test expectations, or acceptance criteria.

Why this standard matters

In standards-driven projects, even a corrigendum can be important because it helps ensure that the latest corrected requirements are being used. C37.09-1999/Cor 1-2007 supports consistency across design, testing, and purchasing activities by reducing ambiguity in the source document. That can improve compliance review, lower rework risk, and make technical decisions easier to defend during audits or contract checks. For teams relying on the original standard, the correction helps maintain clearer engineering control.

• Corrigendum to the C37.09-1999 standard
• English-language technical document
• Relevant to power, energy, and industrial applications
• Useful for specification review and compliance checks
• Supports corrected interpretation of the base standard