NEMA Publishes transformer-rated meter test switch/plug standard.
Press Release Summary:
Published by NEMA, ANSI C12.9-2014 Standard for Test Switches and Plugs for Transformer-Rated Meters encompasses dimensions and functions of meter test switches used with transformer-rated watt hour meters in conjunction with instrument transformers as well as test plugs used in conjunction with test switch. This edition includes specifications for test jacks used in conjunction with test switches to ensure proper and safe operation.
Original Press Release:
NEMA Publishes ANSI C12.9-2014 Standard for Test Switches and Plugs for Transformer-Rated Meters
ROSSLYN, Va.—The National Electrical Manufacturers Association (NEMA) published ANSI C12.9-2014 Standard for Test Switches and Plugs for Transformer-Rated Meters. This standard is useful to the electricity meter and meter socket industries, as well electric utilities.
ANSI C12.9 was developed by the NEMA's Meter Mounting/Test Equipment Division and ANSI Accredited Standards Committee (ASC) 12. The standard is intended to encompass the dimensions and functions of meter test switches used with transformer-rated watthour meters in conjunction with instrument transformers and test plugs used in conjunction with the test switch.
In this edition, specifications for test jacks used in conjunction with the test switches were added. These additions ensure that test jacks used in conjunction with switches meeting this standard will operate properly and safely.
ANSI C12.9-2014 may be downloaded or purchased in hard copy for $65 on the NEMA website.
NEMA is the association of electrical equipment and medical imaging manufacturers, founded in 1926 and headquartered in Rosslyn, Virginia. Nearly 400 members strong, its companies manufacture a diverse set of products including power transmission and distribution equipment, lighting systems, factory automation and control systems, and medical imaging and radiation therapy systems. Total U.S. shipments for electroindustry products exceed $100 billion annually.
National Electrical Manufacturers Association
Visit our website at www.nema.org
