IEC 61000-4-28:1999/AMD1:2001

IEC 61000-4-28:1999/AMD1:2001 is an amendment connected to the Amendment 1 - Electromagnetic compatibility (EMC) - Part 4-28: Testing and measurement techniques - Variation of power frequency, immunity test, supporting technical use of the parent document in EMC evaluation work. It is relevant where engineers and compliance teams need a reliable reference for immunity test planning, documentation review, and laboratory evaluation tied to power frequency variation. For organizations managing technical assessment or conformity assessment tasks, IEC 61000-4-28:1999/AMD1:2001 helps maintain alignment with the documented test approach.

Purpose of IEC 61000-4-28:1999/AMD1:2001

The purpose of IEC 61000-4-28:1999/AMD1:2001 is to modify or support the parent EMC immunity test document, which addresses variation of power frequency. In practical terms, it is used as a technical reference when reviewing how electrical equipment may respond to power frequency changes during verification activities. The amendment is most relevant to teams involved in technical review, testing workflows, and engineering documentation, where controlled and traceable immunity assessment is needed for regulatory preparation or product evaluation.

Compliance applications of IEC 61000-4-28:1999/AMD1:2001

IEC 61000-4-28:1999/AMD1:2001 is typically consulted in EMC compliance workflows for equipment that must demonstrate immunity performance under power frequency variation conditions. It may support laboratories, manufacturers, and test planners working on electrical equipment, control systems, or other installations where operational consistency matters. The document can also be useful during procurement review and conformity assessment preparation, especially when teams need to confirm that the applicable testing standard and its amendment are correctly identified in project files, specifications, or test reports.

Benefits of IEC 61000-4-28:1999/AMD1:2001

Using IEC 61000-4-28:1999/AMD1:2001 helps organizations keep EMC documentation current and aligned with the parent immunity test reference. That supports consistent laboratory evaluation, clearer technical validation, and better risk management when assessing equipment behavior under power frequency variation. For procurement and quality workflows, the amendment can reduce ambiguity in document control and improve traceability across compliance records. It is especially valuable when a team needs a dependable compliance reference for testing consistency, engineering validation, and conformity assessment planning.

• Supports review of immunity testing related to power frequency variation.
• Acts as a supporting amendment to IEC 61000-4-28:1999 rather than a standalone technical basis.
• Useful for EMC documentation control, test planning, and compliance verification.
• Helps align laboratory and engineering workflows with the amended parent reference.