From Wikipedia, the free encyclopedia
This article includes a list of references, related reading, or external links, but its sources remain unclear because it lacks inline citations. Please help improve this article by introducing more precise citations. (October 2009) (Learn how and when to remove this message) |
ANSI C12.20 is an ANSI standard that describes an American National Standard for Electricity Meters - accuracy and performance.
The C12.20 standard established the physical aspects and performance criteria for a meter's accuracy class. It refines certain details in ANSI C12.1 and ANSI C12.10.
The existing ANSI accuracy classes for electric meters are:
- Class .5 - having ± 0.5% accuracy.
- Class .2 - having ± 0.2% accuracy.
- Class .1 - having ± 0.1% accuracy.
Outside North America, IEC standards are used for electric meters.
See also
[edit]Further reading
[edit]- ANSI C12.1, American National Standard for Electric Meters - Code for Electricity Metering
- ANSI C12.10, American National Standard for Physical Aspects of Watthour Meters - Safety Standard
- ANSI C12.18, American National Standard for Protocol Specification for ANSI Type 2 Optical Port
External links
[edit]
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