IEC 61000-3-3:2013

Electromagnetic compatibility - Limits - Limitation of voltage changes, fluctuations and flicker

📅 Issue date：— 🔄 Effective date：— 🌍 Type：International standard

📑 Table of Contents

1 Scope
2 Normative references
3 Terms and definitions
4 Technical requirements

01 Scope

Specifies limits (Pst ≤1.0, Plt ≤0.65, etc.) for voltage changes, fluctuations and flicker caused by equipment ≤16 A per phase connected without conditional connection.

02 Normative references

IEC 61000-4 series

03 Terms and definitions

Performance criteria

A/B/C by degree of functional preservation.

04 Technical requirements

Pst ≤1.0

Short-term flicker severity limit.

Plt ≤0.65

Long-term flicker severity limit.

Relative voltage change

d_max ≤3% (general equipment).

📎 Related standards

Disclaimer：This page is a technical summary of the corresponding standard for quick reference. All limits, clauses and methods are subject to the official publication and its latest amendments; formal compliance assessment must refer to the official issued text.