IEC 61000-3-3:2013/AMD2:2021
Amendment 2 - Electromagnetic compatibility (EMC) - Part 3-3: Limits - Limitation of voltage changes, voltage fluctuations and flicker in public low-voltage supply systems, for equipment with rated current ≤16 A per phase and not subject to conditional connection
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About This Item
IEC 61000-3-3:2013/AMD2:2021 is a supporting amendment to the parent EMC reference for limiting voltage changes, voltage fluctuations, and flicker in public low-voltage supply systems. It is relevant where equipment with rated current up to 16 A per phase is evaluated for its potential impact on supply quality and network compatibility. For engineering, testing, and procurement teams, the document helps identify the applicable conformity assessment reference when reviewing electrical equipment, preparing verification activities, or managing technical compliance against flicker-related emission requirements.
Overview of IEC 61000-3-3:2013/AMD2:2021
This amendment modifies IEC 61000-3-3:2013, so it should be used as a connected technical reference rather than treated as a standalone standard. Its scope remains aligned with EMC control of voltage variations caused by equipment connected to public low-voltage systems, particularly where rated current does not exceed 16 A per phase and conditional connection is not involved. In practice, it supports technical review, documented evaluation, and conformity assessment work for products that may influence supply stability and user-visible flicker performance.
Compliance applications of IEC 61000-3-3:2013/AMD2:2021
IEC 61000-3-3:2013/AMD2:2021 is commonly used in compliance workflows for electrical and electronic equipment that connects to public low-voltage networks, especially during pre-compliance checks, laboratory evaluation, and product qualification. It can support engineering documentation when teams need to assess whether a device is likely to create unacceptable voltage fluctuations or flicker under normal operating conditions. The amendment is also useful for procurement and regulatory preparation when selecting the correct compliance reference for equipment release, certification planning, or technical assessment of customer-facing products.
Importance of compliance with IEC 61000-3-3:2013/AMD2:2021
Using the amendment alongside the parent document helps maintain consistency in EMC testing and reduces the risk of incomplete or outdated conformity assessment work. For manufacturers and laboratories, it supports clearer verification activities and more reliable product evaluation when voltage change and flicker limits are part of the acceptance criteria. This is important for quality workflows, interoperability with public supply systems, and risk reduction during design validation, procurement review, and regulatory preparation. It also helps align technical documentation with the current amendment structure used in compliance programs.
- Supporting amendment to IEC 61000-3-3:2013 for EMC-related voltage change and flicker control
- Relevant to equipment with rated current up to 16 A per phase on public low-voltage supply systems
- Useful for laboratory evaluation, pre-compliance checks, and engineering validation
- Helps structure conformity assessment and technical documentation for procurement or regulatory review
- Addresses compatibility concerns tied to voltage fluctuations, flicker, and supply quality
- Publication Date: 2021-03-25
- Standard Status: Amendment
- Publisher: IEC
- Edition: 3
- New Version Available: IEC 61000-3-3:2013 (2025-03-04)
- Previous Version: IEC 61000-3-3:2013 (2022-10-01)
- This Version: IEC 61000-3-3:2013 (2021-03-25)
- Previous Version: IEC 61000-3-3:2013 (2017-05-18)
- Previous Version: IEC 61000-3-3:2013 (2013-05-14)
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