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IEC 60477-2 Ed. 2.0 b:2022

Laboratory resistors - Part 2: Laboratory AC resistors
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IEC 60477-2 Ed. 2.0 b:2022

Laboratory resistors - Part 2: Laboratory AC resistors

PUBLISH DATE 2022
PAGES 58
IEC 60477-2 Ed. 2.0 b:2022

Laboratory resistors - Part 2: Laboratory AC resistors

IEC 60477-2:2022 applies to resistors intended as laboratory AC resistors for use over a range of frequencies from DC up to a stated frequency which is not in excess of 1 MHz. Such resistors are hereinafter referred to as "AC resistors".

In addition to satisfying the requirements of IEC 60477-1, resistors satisfying the requirements of this document are designed to have a small variation of resistance and a small phase displacement over the stated frequency range.

IEC 60477-2:2022 cancels and replaces the first edition published in 1979, and Amendment 1:1997. This edition constitutes a technical revision.

This edition includes the following significant technical changes with respect to the previous edition:

  • extended the AC resistor frequency range to 1 MHz;
  • updated the terms and definitions according to IEC 60050 series;
  • added the definition of AC/DC difference of an AC resistor;
  • added the resistor classification according to the AC resistance or AC/DC difference index;
  • updated the classification according to the AC resistor construction;
  • updated the safety symbols and requirements according to IEC 60477-1;
  • added the three-element equivalent circuits of an AC resistor in Annex C;
  • added the annex on constructions of AC resistors.
SDO IEC: International Electrotechnical Commission
Document Number IEC 60477
Publication Date March 1, 2022
Language b - English & French
Page Count
Revision Level 2.0
Supercedes
Committee 85
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