IEEE approves new power standards for adjustable-speed drives and harmonic filters

The Institute of Electrical and Electronics Engineers Standards Association (IEEE-SA) Standards Board has approved two new power generation standards, one for adjustable-speed drives, IEEE 958 ™, and the other for harmonic filters, IEEE 1531 ™.


Also approves revised standards on the sun's affect on outdoor switchgear

PISCATAWAY, N.J., July 14, 2003 -- The Institute of Electrical and Electronics Engineers Standards Association (IEEE-SA) Standards Board has approved two new power generation standards, one for adjustable-speed drives, IEEE 958 ™, and the other for harmonic filters, IEEE 1531 ™. It also approved a revised standard for how solar radiation affects outdoor metal-enclosed switchgear, IEEE C37.24 ™.

IEEE 958, "Guide for Application of AC Adjustable-Speed Drives on 2,400 to 13,800 Volt Auxiliary Systems in Electric Power Generating Stations," is a new standard on the operation, selection and use of adjustable-speed drives (ASD) for motor-driven systems. It reviews ASD terminology, theory of operation and selection, as well as drive system classification, typical applications, and ASD design, specifications and installation.

IEEE 1531, "Guide for Application and Specification of Harmonic Filters," is the first standard developed specifically for harmonic filters. It provides guidelines for the use and specification of passive shunt harmonic filters operating in 50 and 60 HZ power systems at 216 volts or more. It also includes criteria for designing, controlling and protecting these filters.

The revised standard, IEEE C37.24, "Guide for Evaluating the Effect of Solar Radiation on Outdoor Metal-Enclosed Switchgear," looks at how the sun affects outdoor metal-enclosed switchgear, control switchboards and metal-enclosed bus. The thermal effects of solar radiation, which vary with geography and time, are a factor in defining how much current outdoor metal-enclosed switchgear can carry.

The IEEE also reaffirmed the continuing use of four existing standards:

· IEEE 620 ™, "Guide for the Presentation of Thermal Limit Curves for Squirrel Cage Induction Machines"
· IEEE 1082 ™, "Guide for Incorporating Human Action Reliability Analysis for Nuclear Power Generating Stations"
· IEEE C37.20.6 ™, "Standard for 4.76 kV to 38 kV Rated Grounding and Testing Devices Used in Enclosures"
· IEEE C37.18 ™, "Standard Enclosed Field Discharge Circuit Beakers for Rotating Electric Machinery.

All of the above standards were sponsored by the IEEE Power Engineering Society.

About the IEEE Standards Association

The IEEE Standards Association, a globally recognized standards-setting body, develops consensus standards through an open process that brings diverse parts of an industry together. These standards set specifications and procedures to ensure that products and services are fit for their purpose and perform as intended. The IEEE-SA has a portfolio of more than 870 completed standards and more than 400 standards in development. Over 15,000 IEEE members worldwide belong to IEEE-SA and voluntarily participate in standards activities. For further information on IEEE-SA see: http://standards.ieee.org.

About the IEEE

The IEEE has more than 380,000 members in approximately 150 countries. Through its members, the organization is a leading authority on areas ranging from aerospace, computers and telecommunications to biomedicine, electric power and consumer electronics. The IEEE produces nearly 30 percent of the world's literature in the electrical and electronics engineering, computing and control technology fields. This nonprofit organization also sponsors or cosponsors more than 300 technical conferences each year. Additional information about the IEEE can be found at http://www.ieee.org.

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