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IEC 63497 Ed. 1.0 en:2026

Shunt-connected active correction devices (ACD)
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IEC 63497 Ed. 1.0 en:2026

Shunt-connected active correction devices (ACD)

IEC 63497 Ed. 1.0 en:2026

IEC 63497:2026, which is a product standard, is intended to specify the EMC, performance and safety requirements of shunt-connected active correction devices (ACD) with rated system voltages not exceeding 1 000 V AC or 1 500 V DC.

These devices can be either cord or permanently connected. They can be movable, stationary, or fixed devices.

An ACD includes both a static VAR generator (SVG) and an active harmonic filter (AHF).

The primary function of a shunt connected ACD is to do one or more of the following:

  • active harmonic filtering;
  • reactive power compensation;
  • unbalanced load compensation.

Additional functions of a shunt-connected ACD, not addressed by this document, can be the following:

  • flicker compensation;
  • interharmonic component filtering.

In case of hybrid devices, combining a passive harmonic filter and an ACD, this document covers only the active part.

This document does not cover:

  • active mitigation functions part of another device (variable speed drive, uninterruptible power supply, dynamic voltage restorer, etc.),
  • switched power capacitors,
  • switched inductors,
  • passive harmonic filters,
  • energy storage converters, and
  • series-connected active correction devices.
SDO IEC: International Electrotechnical Commission
Document Number IEC 63497
Publication Date Not Available
Language en - English
Page Count 48
Revision Level 1.0
Supercedes
Committee 22E
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