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IEEE ASA C39.1-1959

ASA American Standard Requirements for Electrical Indicating Instruments Panel, Switchboard, and Portable Instruments
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IEEE ASA C39.1-1959

ASA American Standard Requirements for Electrical Indicating Instruments Panel, Switchboard, and Portable Instruments

PUBLISH DATE 1959
PAGES 50
IEEE ASA C39.1-1959

Revision Standard - Inactive-Withdrawn.

This standard applies to the following kinds of electrical indicating instruments for direct and alternating current, including instruments with prefixes such as micro-, kilo-, etc:

  • Ammeters
  • Voltmeters
  • Wattmeters
  • Varmeters (reactive-volt-ampere meters)
  • Frequency meters
  • Power-factor meters
  • Indicating instruments functioning on the above principles, but indicating derived quantities

1.2 This standard may apply, with suitable exceptions, to instruments constructed for special requirements. For example, ultrasensitive direct-current micro ammeters, high-resistance voltmeters, thermo-milliammeters, thermo-voltmeters of the vacuum-couple type, and instruments with special and unusual ranges.

1.3 This standard does not apply to the following kinds of instruments:

  • Indicating instruments provided with arrangements for curve drawing, contact making, etc
  • Small instruments of types and sizes where the indications are only approximate; for example, small polarized-vane ammeters used on automobiles, battery-charging outfits, etc
SDO IEEE: Institute of Electrical and Electronics Engineers
Document Number C39.1
Publication Date June 30, 1959
Language en - English
Page Count 50
Revision Level
Supercedes
Committee
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