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Standard

IEEE C62.21-2003

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Abstract

New IEEE Standard - Inactive-Reserved. Project scope: This guide covers the application of surge voltage protective equipment to AC rotating machines rated 1000 volts and greater. The guide does not cover motors applied in solid-state switched adjustable speed drives. Part 1 covers the insulation surge withstand strength of motors and generators with windings having form-wound multi-turn coils and the application of surge protection to form-wound multi-turn coil motors. Part 2 will cover application of surge protection to generators with form-wound multi-turn coils, plus insulation surge withstand strength and surge protection of single-turn coil generators and motors. Project purpose: This guide is intended to aid engineers at all levels of surge protection knowledge in deciding whether particular machines should have surge protection. The guide may be used in estimating the surge withstand capability and switching surge exposure of ac rotating machinery in usual, not extreme exposure, installations. The manufacturer should be contacted for specific insulation surge voltage withstand values for machinery of particular interest or importance. For those machines which should be protected, the purpose is to provide guidance in selecting and applying the protective devices. A simple look-up method using tables and a graph is provided for quick estimation of surge rise times and surge voltage levels, and for general use where accuracies in the order of 10% to 15% are acceptable. This method is based on single-phase analysis, neglecting the influence of ground mode surge propagation. A more complex method is provided by formulas to model the three-phase and ground mode propagation. The formulas can be used with calculators or personal computers.

Products specifications

  • Standard from IEEE
  • Published:
  • Withdrawn:
  • Document type: IS
  • Pages
  • Publisher: IEEE
  • Distributor: IEEE
  • ICS: 29.120.50
  • National Committee: IEEE Power and Energy Society / Surge Protective Devices Committee

Product Relations

  • Referred by: IEEE C37.96-2012
  • Referred by: IEEE C37.96-2012
  • Referred by: IEEE C62.22-2009
  • Refers: IEEE 841-2001
  • Refers: IEEE 1-2000
  • Refers: IEEE 80-2000
  • Refers: IEEE 43-2000
  • Refers: IEEE C62.11-1999
  • Refers: IEEE C62.22-1997
  • Refers: IEEE 1043-1996
  • Refers: IEEE 367-1996
  • Refers: IEEE 432-1992
  • Refers: IEEE 522-1992
  • Refers: IEEE 930-1987
  • Refers: IEEE 943-1986
  • Refers: IEEE 56-1977
  • Refers: IEEE 117-1974
  • Refers: IEEE 434-1973
  • Refers: NEMA Std MG-1-1998, Motors and Generators, Parts 20.87 and 21.90
  • Refers: 1 EPCC publications are available from the South African Institute of Electrical Engineers (SAIEE), P.O. Box 93541. Yeoville, Johannesburg, South Africa, 2143, (http://www.saiee.org.za).
  • Refers: EPCC (Electric Power Coordinating Committee, South Africa) Guide for the Application of Switching Surge Suppressors to Medium Voltage Motors, Aug. 1992.
  • Refers: 3 NEMA publications are available from Global Engineering Documents, 15 Inverness Way East, Englewood, Colorado 80112, USA (http://global.ihs.com/).
  • Refers: 2 IEC publications are available from the Sales Department of the International Electrotechnical Commission, Case Postale 131, 3, rue de Varembé, CH-1211, Genève 20, Switzerland/Suisse (http://www.iec.ch/). IEC publications are also available in the United States from the Sales Department, American National Standards Institute, 11 West 42nd Street, 13th Floor, New York, NY 10036, USA.
  • Refers: IEC 60034-15: 1995, Rotating Electrical Machines, Part 19: Impulse Voltage Withstand Levels of AC Rotating Machines with Form-Wound Stator Coils.