IEEE P1862/D6-4, Feb 2014
IEEE Recommended Practice for Overvoltage and Insulation Coordination of Transmission Systems at 1000 kV AC and Above
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- Language: English
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About This Item
IEEE P1862/D6-4, Feb 2014 is a technical document focused on overvoltage and insulation coordination for transmission systems at 1000 kV AC and above. It addresses how very high voltage networks are planned and evaluated so insulation levels, protection practices, and system performance remain aligned under severe electrical stress. For utilities, designers, and engineers working with ultra-high-voltage transmission, this standard helps define a consistent basis for design review and technical comparison.
IEEE P1862/D6-4, Feb 2014 overview
IEEE P1862/D6-4, Feb 2014 provides recommended practice guidance for coordinating insulation and managing overvoltage conditions in extra-high-voltage AC transmission systems. Its technical scope is centered on the relationship between system voltage class, insulation design, and transient stresses that can affect equipment and line performance. The document is relevant to planning and engineering decisions where controlled insulation coordination is needed to support reliable operation at 1000 kV AC and above. As an inactive draft, it is most useful as a reference point for legacy engineering work and technical comparison.
Typical use cases
This standard is commonly consulted during the design of ultra-high-voltage transmission lines, substations, and associated insulation systems. It may also support studies of switching and lightning overvoltage behavior, selection of insulation levels for equipment, and coordination of protection and clearances across the transmission network. Engineers working with conductors, bushings, transformers, surge protective devices, and related high-voltage components can use IEEE P1862/D6-4, Feb 2014 to frame technical requirements and review design margins for demanding power system applications.
Why this standard matters
At 1000 kV AC and above, small coordination errors can lead to insulation failure, equipment damage, or service interruption. IEEE P1862/D6-4, Feb 2014 matters because it supports more consistent decisions about withstand levels, overvoltage tolerance, and system coordination across interconnected assets. That consistency is important for engineering review, procurement specifications, testing plans, and risk reduction. It also helps stakeholders compare designs using a shared technical basis rather than ad hoc assumptions, which is especially valuable in high-stress transmission environments.
- Ultra-high-voltage AC transmission
- Overvoltage coordination
- Insulation design and review
- System and equipment protection planning
- Legacy draft reference for engineering
- Publication Date: 2014
- Standard Status: Inactive
- Publisher: IEEE
- Subject: Power, Energy and Industry Applications; Components, Circuits, Devices and Systems; Engineered Materials, Dielectrics and Plasmas
- Official IEEE: Doi link
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