ANSI C12.9 2005 Edition, January 1, 2005
Test Switches for Transformer-Rated Meters
Includes all amendments and changes through Change/Amendment , 2005
Published By:National Electrical Manufacturers Association (NEMA)
The NEMA Smart Meter Package provides the requirements and guidance on electricity metering, watt hour meter sockets, device data tables, meter interfacing to data communication networks and type 2 optical ports. NEMA Smart Meter Package also establishes performance criteria for thermal demand meters, mechanical demand registers and phase shifting devices used in metering. Test methods for transformer-rated meters and self contained "A" base watt hour meter are included in this package as well as a watt hour safety standard. This package contains all parts of NEMA ANSI C12 and NEMA SG-AMI 1.