IEEE PC37.66/D12
Unapproved IEEE Draft: Standard Requirements for Capacitor Switches for Alternating-Current Systems (1 to 38kV) (Supersed by Approved IEEE Draft)
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Language: English
License Type: Single User
Updates: Not Included
About This Item
IEEE PC37.66/D12 is an inactive IEEE draft standard for capacitor switches used in alternating-current systems from 1 to 38 kV. It addresses the requirements that help define how these switches should perform in power applications, with attention to ratings, operating behavior, and safe switching of capacitor banks. As a draft technical document in the power, energy, and industry applications space, it is relevant for understanding the design and compliance basis for medium-voltage capacitor switching equipment.
Overview of IEEE PC37.66/D12
This draft standard focuses on the requirements for capacitor switches intended for AC systems in the 1 to 38 kV range. Its role is to establish a technical framework for equipment used to switch capacitor banks, which are commonly applied to support voltage control and reactive power management. IEEE PC37.66/D12 is useful where consistent performance, defined test expectations, and clear equipment requirements are needed for engineering, procurement, and specification work.
Typical use cases
IEEE PC37.66/D12 is most relevant to medium-voltage capacitor switching equipment used in utility distribution networks, substations, and industrial power systems. It may be applied when specifying switches for capacitor banks that support power factor correction, voltage regulation, or system stability. Engineers and buyers can use it when comparing equipment designs, reviewing ratings, or checking whether a capacitor switch is intended for AC applications in the 1 to 38 kV range.
Why it matters
For capacitor-switching applications, the standard helps create a more consistent basis for design and evaluation. That matters because switching capacitor banks involves electrical duty that can affect equipment life, system reliability, and safety. IEEE PC37.66/D12 can support clearer requirements during compliance reviews, testing, and procurement, reducing ambiguity when selecting or specifying switchgear for power systems. It also helps align expectations between equipment manufacturers and users in technically demanding installations.
- Capacitor switches for AC systems
- Voltage range: 1 to 38 kV
- Draft requirements and technical criteria
- Medium-voltage power system applications
- Inactive IEEE document status
- Publication Date: 2005
- Standard Status: Inactive
- Publisher: IEEE
- Subject: Power, Energy and Industry Applications
- Official IEEE: Doi link
- New Version Available: PC37.66 (2020)
- Previous Version: PC37.66 (2005)
- This Version: PC37.66 (2005)
- Previous Version: PC37.66 (2005)
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