IEC 61000-3-3

EXECUTIVE SUMMARY

Scope: EMC emission limits for voltage changes, fluctuations and flicker (≤16 A/phase) plus related harmonics and >16 A sub-categories. Overall landscape: GB 17625.2 is an IDT adoption of IEC 61000-3-3, but the Chinese edition tracks an older IEC edition — numeric limits align, edition alignment does not. Key implication: equipment certified to IEC 61000-3-3:2013+A1+A2 requires additional testing against the GB edition in force; do not assume direct mutual recognition.

APPLICABLE CHINESE STANDARDS

STANDARD TIER CLASSIFICATION

FLAG: GB/T 17626.15 is a TIER 2 test method — valid only when cited alongside TIER 1 limits; do not use as a standalone compliance basis.

SCOPE BREAKDOWN

≤16 A per phase, unconditional connection

Chinese standard: GB 17625.2-2007: 电磁兼容 限值 对每相额定电流≤16A且无条件接入的设备在公用低压供电系统中产生的电压变化、电压波动和闪烁的限制 (EMC — Limits — Voltage changes, fluctuations and flicker, ≤16 A, unconditional connection)

International equivalent: IEC 61000-3-3:2013+A1:2017+A2:2021 — ⚠️ GB edition tracks an earlier IEC edition; verify edition alignment

Equivalence: IDT (limits), MOD (edition currency)

Standard tier match: Both TIER 1 — valid comparison

>16 A and ≤75 A per phase

Chinese standard: GB/Z 17625.3-2000: 额定电流>16A的设备在低压供电系统中产生的电压波动和闪烁的限制 (Voltage fluctuation/flicker limits, >16 A)

International equivalent: IEC 61000-3-11 (edition year — Verify: IEC 61000-3-11 current edition)

Equivalence: MOD (GB/Z is guidance-tier, not mandatory GB)

Standard tier match: ⚠️ Tier mismatch: CN is guidance (GB/Z), INT is normative limit — see note

Note: GB/Z 17625.3 is a guidance document; IEC 61000-3-11 is a normative standard. Do not treat GB/Z as equivalent mandatory basis.

Harmonic currents (≤16 A) — related family member

Chinese standard: GB 17625.1-2022: 电磁兼容 限值 第1部分：谐波电流发射限值（设备每相输入电流≤16A） (EMC — Limits — Part 1: Harmonic current emission limits, ≤16 A)

International equivalent: IEC 61000-3-2 (edition year — Verify: IEC 61000-3-2 current edition)

Equivalence: IDT (harmonic limit structure)

Standard tier match: Both TIER 1 — valid comparison

KEY DIFFERENCES SUMMARY

• Edition currency — GB 17625.2-2007 tracks an earlier IEC 61000-3-3 edition than 2013+A1+A2. Deviation: edition mismatch, not numeric. Mutual recognition: 附加测试后互认 (Mutual recognition after additional testing). Impact: HIGH.
• GB 17625.2-1999 withdrawn — must not be cited. Impact: HIGH (documentation risk).
• >16 A tier mismatch — GB/Z 17625.3 is guidance; IEC 61000-3-11 is normative. Mutual recognition: 不可互认 (Not mutually recognised). Impact: HIGH.
• Flickermeter test method — GB/T 17626.15-2011 aligns with IEC 61000-4-15; test method is 直接互认 (Direct mutual recognition). Impact: LOW.
• Harmonics — GB 17625.1-2022 is current; verify class assignment against IEC 61000-3-2. Impact: HIGH.

REGULATORY LINKAGE TABLE (法规联动)

AUDIT FLAG RESOLUTION

• 🔴 CRITICAL CORRECTION: GB 17625.2-1999 is WITHDRAWN (废止) — any draft citing it as current is wrong. Use GB 17625.2-2007.
• ✅ RESOLVED: GB 17625.1-2022 is CURRENT — no supersession note added.
• ✅ RESOLVED: GB/T 17626.15-2011 is CURRENT — no supersession note added.
• ⚠️ UNRESOLVED: Exact IEC edition adopted by GB 17625.2-2007 — verify against GB 17625.2-2007 foreword (前言).
• ⚠️ UNRESOLVED: All numeric limit clauses marked [Verify] — confirm against official GB 17625.2-2007 §5.

PROCUREMENT VERDICT

• Confirm the GB edition in force (GB 17625.2-2007) and its adopted IEC edition via the standard's 前言 (foreword).
• Do not accept GB 17625.2-1999 test reports — withdrawn.
• Require flicker test data (Pst, Plt, dmax, dc, Tmax) with clause references.
• For >16 A equipment, treat GB/Z 17625.3 as guidance only; obtain IEC 61000-3-11 data separately.
• Verify harmonic class (A–D) against GB 17625.1-2022.
• Confirm CCC/EMC certification scope for the specific product.

REFERENCE DOCUMENT CHECKLIST (配套调阅清单)

• GB 17625.2-2007 §5 — Pst, Plt, dmax, dc, Tmax limit values
• GB 17625.2-2007 前言 (Foreword) — adopted IEC edition
• GB 17625.1-2022 §5–§7 — harmonic current limits by class
• GB/T 17626.15-2011 — flickermeter specification
• GB/Z 17625.3-2000 §4 — >16 A flicker limits
• IEC 61000-3-3:2013+A1:2017+A2:2021 §5 — international limit values

FIELD INSPECTION CHECKLIST

• Verify nameplate rated current ≤16 A/phase (or >16 A for GB/Z scope).
• Confirm test report cites GB 17625.2-2007 (not 1999).
• Check flickermeter calibration to GB/T 17626.15-2011.
• Verify Pst/Plt observation periods (10 min / 2 h).
• Confirm harmonic class assignment matches product type.

CONFIDENCE RATING

🟡 MEDIUM — core limits (Pst ≤1.0, Plt ≤0.65, dmax ≤4%) agreed across both AI sources, but all clause numbers and the adopted IEC edition require official-text confirmation.

Technical comparison report — CN Quality Check Standards Tool. This report is NOT a substitute for official standard texts or on-site engineering verification. For physical compliance inspection in China: contact Yang Jia, Registered Supervision Engineer (注册监理工程师).