IEEE 1137-1991/Cor 1-2009

1137-1991/Cor 1-2009 is a corrigendum to the original 1137-1991 technical document, issued to correct or clarify the published requirements in the power, energy and industry applications field. As a correction document, it is important for users who need to align engineering work, procurement, or compliance checks with the amended text rather than the uncorrected edition. For teams working with IEEE 1137-1991/Cor 1-2009, it helps maintain consistency and reduce interpretation errors.

1137-1991/Cor 1-2009 overview

This corrigendum is part of the 1137 standard family and should be read alongside the base 1991 edition. Its role is typically to update wording, resolve technical inconsistencies, or refine requirements so the standard can be applied more reliably in practice. In power, energy and industrial applications, even small corrections can affect design decisions, test methods, documentation, and acceptance criteria. Using the corrected text helps ensure that engineering and compliance activities are based on the intended requirements.

Typical use cases

1137-1991/Cor 1-2009 is most relevant when reviewing legacy power or industrial systems that reference the original 1137-1991 standard and need the corrigendum applied. It may be used during specification review, technical document control, equipment evaluation, or conformity checking where amended wording matters. The document is also useful for utilities, industrial operators, designers, and procurement teams that need a reliable reference when comparing requirements, verifying performance expectations, or maintaining consistent records across project documentation.

Why this standard matters

Corrigenda matter because they help prevent misreading of technical requirements and reduce the risk of using outdated wording in critical work. For a standard in this subject area, accuracy can affect equipment selection, testing procedures, and acceptance decisions in power and industrial environments. 1137-1991/Cor 1-2009 supports better design control and clearer compliance reviews by pointing users to the corrected text. That makes it a practical reference for minimizing disputes and improving consistency across technical teams.

• Corrigendum to the 1991 base standard
• Applied to power and energy applications
• Useful for compliance and document control
• Supports corrected technical interpretation
• Relevant to legacy engineering references