IEEE PC62.21_D3, Sep07
IEEE Draft Guide for the Application of Surge Voltage Protective Equipment on Ac Rotating Machinery 1000 Volts and Greater Corrigendum 1: Replace Table 2 and Annex A.1 and A.2|Surge Protective Devices
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Language: English
License Type: Single User
Updates: Not Included
About This Item
IEEE PC62.21_D3, Sep07 is an inactive IEEE draft guide focused on applying surge voltage protective equipment to AC rotating machinery rated 1000 volts and greater. It addresses the practical protection of motors, generators, and related industrial assets where transient overvoltage can affect insulation and operating reliability. The corrigendum indicates updates to Table 2 and Annex A.1 and A.2, making this technical document relevant for engineers reviewing surge protective devices and machine protection practices in power, energy and industry applications.
Overview of IEEE PC62.21_D3, Sep07
This draft guide provides technical direction for selecting and applying surge voltage protection on higher-voltage AC rotating machinery. IEEE PC62.21_D3, Sep07 is best understood as a corrective and guidance-oriented document that refines earlier content through its corrigendum, especially in the referenced table and annexes. In practice, it supports design review, equipment coordination, and insulation protection decisions where surge protective devices may be used to reduce exposure to damaging transient voltages.
Typical use cases
IEEE PC62.21_D3, Sep07 is relevant when specifying protection for large industrial motors, generators, and other AC rotating machines operating at 1000 volts and above. It may be used during electrical design, retrofit planning, or maintenance review for facilities that depend on surge protective devices to manage voltage spikes. Common use cases include utility-connected plants, process industries, and power system installations where machine insulation performance and surge coordination are important.
Why it matters
For engineers and procurement teams, IEEE PC62.21_D3, Sep07 helps improve consistency in how surge protection is evaluated and applied to rotating machinery. Clear guidance can reduce the risk of insulation stress, unexpected downtime, and mismatched protective equipment. It also supports more defensible technical decisions when comparing products, reviewing compliance needs, or validating protection strategies. Because the document includes corrigendum changes, it is especially useful for careful specification and document control.
- AC rotating machinery at 1000 V and greater
- Surge voltage protective equipment application
- Corrigendum updates to Table 2
- Annex revisions for A.1 and A.2
- Protection guidance for industrial power systems
- Publication Date: 2007
- Standard Status: Inactive
- Publisher: IEEE
- Subject: Power, Energy and Industry Applications
- Official IEEE: Doi link
- New Version Available: PC62.21 (2008)
- This Version: PC62.21 (2007)
- Previous Version: PC62.21 (2007)
- Previous Version: PC62.21 (2007)
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