IEEE C37.110-2007/Cor 1-2010
IEEE Guide for the Application of Current Transformers Used for Protective Relaying Purposes Corrigendum 1: Corrections to Equation 18 and Equation 19
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About This Item
IEEE C37.110-2007/Cor 1-2010 is a corrigendum to the guide for applying current transformers used for protective relaying purposes, with corrections to Equation 18 and Equation 19. It is relevant to power system and industrial protection work where current transformer performance affects relay accuracy and fault response. By clarifying those equations, IEEE C37.110-2007/Cor 1-2010 helps engineers and reviewers maintain consistent calculations and avoid errors in relay application studies.
About IEEE C37.110-2007/Cor 1-2010
This technical document supplements the base IEEE guide for current transformers in protective relaying applications. Its focus is narrow but important: correcting specific mathematical expressions used in the guide so that design and application work is based on the intended values. In practice, IEEE C37.110-2007/Cor 1-2010 supports more reliable interpretation of CT behavior, especially where relay performance, burden, and saturation considerations depend on accurate equations and consistent engineering use.
Where is IEEE C37.110-2007/Cor 1-2010 used?
This corrigendum is used in engineering tasks involving current transformers for protective relays in power, energy, and industrial systems. It is especially relevant in substation protection, switchgear studies, relay setting work, and documentation review for CT-based measurement and fault detection circuits. IEEE C37.110-2007/Cor 1-2010 is also useful during design verification, where calculations tied to transformer application must match the corrected guidance before equipment is specified, tested, or commissioned.
Importance in practice
Accurate current transformer application is essential for dependable protective relaying, and even small equation errors can affect design decisions. IEEE C37.110-2007/Cor 1-2010 matters because it helps reduce calculation mistakes, improve consistency in engineering analysis, and support better compliance with established relay application practice. For procurement, testing, and protection coordination, the corrigendum provides a clearer basis for reviewing CT suitability and minimizing risk in fault protection schemes.
- Current transformers for protective relaying
- Corrections to Equation 18 and Equation 19
- Power and industrial protection applications
- Relay application and design review
- English-language IEEE technical guidance
- Publication Date: 2011
- Standard Status: Inactive
- Publisher: IEEE
- Subject: Power, Energy and Industry Applications; Components, Circuits, Devices and Systems
- Official IEEE: Doi link
- New Version Available: C37.110 (2023)
- This Version: C37.110 (2011)
- Previous Version: C37.110 (2008)
- Previous Version: C37.110 (1996)
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