IEEE approves standards for compensation devices for voltage changes and substation grounding

PISCATAWAY, N.J., Oct. 14, 2002 — The Institute of Electrical and Electronics Engineers Standards Association (IEEE-SA) Standards Board has approved two power generation standards: one for electronic devices that compensate for voltage fluctuations and the other that revises a standard for temporary grounding in substations.

It also has approved the start of work on a new standard to calculate short circuit currents in power systems and the revision of standards on transformer impulse tests and safety cabling in nuclear plants.

The new standard, IEEE 1585 à¢â€ž-, “Guide for the Functional Specification of Medium Voltage (1-35kV) Electronic Series Devices for Compensation of Voltage Fluctuations,” provides information on user requirements, installation and start up for medium-voltage, solid-state devices that compensate for voltage fluctuation. These devices generally contain such components as an inverter, rectifier or dc-to-dc converter, energy storage device and injection transformer.

The revised standard, IEEE 1246 à¢â€ž-, “Guide for Temporary Protective Grounding Systems used in Substations,” expands the existing standard by adding new definitions, examples of differences in body current with various temporary grounding practices, and the results of recent tests of temporary protective grounding equipment.

The three projects begun involve one new standard project and two revisions to existing standards:

“- The new standards project, IEEE P551 à¢â€ž-, “Recommended Practice for Calculating Short-Circuit Currents in Industrial and Commercial Power Systems,” will address the design of electric power circuits so equipment is adequately rated and protected against short circuits or fault currents. Equipment covered includes protective device sensors like series trips and relays, passive equipment that may carry short circuit current, and interrupters like circuit breakers and fuses.

“- The revision to IEEE PC57.98 à¢â€ž-, “Guide for Transformer Impulse Tests,” will update and expand this guide, which helps interpret and apply the impulse testing requirements of the IEEE Standard Text Codes for Transformers.

“- The revision to IEEE P690 à¢â€ž-, “Standard for the Design and Installation of Cable Systems for Class 1E Circuits in Nuclear Power Generating Stations.” will update requirements for safety-related electrical cable systems and associated circuits in nuclear power stations in areas such as fire protection, raceways, separation, cable performance and acceptance testing.

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:

About the IEEE

The IEEE has more than 375,000 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

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