IEEE C57.12.51-2008
Voltage 601 V to 34 500 V; Low- Voltage 208Y/120 V to 4160 V- General Requirements
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About This Item
C57.12.51-2008 is a technical standard for power and energy equipment, covering voltage ranges from 601 V to 34,500 V and low-voltage systems from 208Y/120 V to 4160 V. It addresses general requirements that help define how related equipment should be designed, rated, and evaluated in electrical applications. For engineers, specifiers, and purchasers, this standard matters because it supports consistent expectations for performance and compliance across utility and industrial installations.
What is C57.12.51-2008?
C57.12.51-2008 sets out general requirements for equipment used in specified voltage classes within the power, energy, and industry applications space. As a standards document, it is typically used to guide technical requirements, construction considerations, and related evaluation practices for electrical apparatus within its defined range. The standard number identifies a particular edition, which is important when matching design documents, procurement language, or test references to the correct requirements.
Where is C57.12.51-2008 used?
This standard is relevant wherever medium-voltage and low-voltage electrical systems need clear general requirements, especially in utility and industrial settings. It may be used when specifying equipment that operates in the 601 V to 34,500 V range, as well as lower-voltage systems such as 208Y/120 V to 4160 V. Typical use cases can include equipment selection, engineering review, and documentation for power distribution and related electrical installations.
Why is C57.12.51-2008 important?
C57.12.51-2008 helps bring consistency to engineering and procurement decisions by defining a common technical basis for the equipment it covers. That can reduce ambiguity during design review, manufacturing, acceptance testing, and compliance checks. In practice, using the correct standard edition supports safer electrical coordination, clearer product comparisons, and lower risk of specification errors. It also helps buyers and engineers align requirements with the intended voltage class and application.
- Voltage range coverage
- General technical requirements
- Power and energy applications
- Low-voltage and medium-voltage context
- Superseded edition reference
- Publication Date: 2009
- Standard Status: Superseded
- Publisher: IEEE
- Subject: Power, Energy and Industry Applications
- Official IEEE: Doi link
- New Version Available: C57.12.51 (2019)
- This Version: C57.12.51 (2009)
- Previous Version: C57.12.51 (1981)
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