This document is a product standard 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. ACD includes both Static VAR Generator (SVG) and 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 can be: -Flicker compensation; -Interharmonic component filtering. In case of hybrid devices, combining a passive harmonic filter and an ACD, the standard 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; -Series-connected active correction devices.