Standards Comparison Reports

1

IEC low-voltage

This report covers 低压成套开关设备和控制设备 (LV switchgear and controlgear assemblies) — the assembly-level product family, not individual components. GB/T 7251.1-2023 is an IDT adoption of IEC 61439-1:2020, so the base design-v…

🟡 MEDIUM 🕒 2026-10-14 13:49:52 ✅ Draft ✅ Audit ✅ Report

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2

IEC 60346

The query "IEC 60346" cannot be resolved to any existing IEC standard. Both independent AI drafts (A and B) agree: **IEC 60346 does not exist** as an active IEC designation. No product category, scope, or parameter co…

🟡 MEDIUM 🕒 2026-10-14 13:47:33 ✅ Draft ✅ Audit ✅ Report

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3

Electrical cables · GB/T 5023 vs IEC 60227

Scope: 450/750 V PVC-insulated cables (聚氯乙烯绝缘电缆) — GB 5023.1–7-2008 vs IEC 60227-1–7, plus adjacent cable sub-categories (rubber, XLPE power, fire-performance). GB 5023 is largely **MOD** of IEC 60227 (conductor class…

🔴 LOW 🕒 2026-10-14 13:45:55 ✅ Draft ✅ Audit ✅ Report

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4

GB/T 20285

GB/T 20285-2006 《材料产烟毒性危险分级》(Classification of Smoke Toxicity Hazard of Materials) is a **TIER 4 classification standard with an embedded TIER 2 bioassay test method**, covering smoke-toxicity grading of materials — n…

🟡 MEDIUM 🕒 2026-10-12 15:03:19 ✅ Draft ✅ Audit ✅ Report

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5

异步自测 511697 随机查询：钢结构防火涂料 厚度要求

Scope: 钢结构防火涂料 (Fireproof coatings for steel structures) — product standard vs test method. GB 14907-2018 is a **TIER 1 mandatory product standard**; BS 476-20 is a **TIER 2 test method** — **not directly comparable**…

🟡 MEDIUM 🕒 2026-10-11 03:34:25 ✅ Draft ✅ Audit ✅ Report

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6

GB 50016 建筑设计防火规范 疏散楼梯间 设置要求

Scope: 疏散楼梯间 (Evacuation stairwells) under GB 50016-2014 (2018 Edition) — 开敞/封闭/防烟楼梯间 (open/closed/smoke-proof stairwells) + 室外疏散楼梯 (outdoor evacuation stairs). All compared standards are TIER 3 design codes; no produ…

🟡 MEDIUM 🕒 2026-10-11 03:33:06 ✅ Draft ✅ Audit ✅ Report

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7

IEC 61000-3-3

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 Chines…

🔴 LOW 🕒 2026-10-07 22:55:57 ✅ Draft ✅ Audit ✅ Report

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8

IEC 61000-3-2

Scope: harmonic current emission limits for electrical/electronic equipment with input current ≤16 A per phase, split by equipment Class A/B/C/D. GB 17625.1-2022 is the Chinese national adoption of IEC 61000-3-2; both…

🟡 MEDIUM 🕒 2026-10-07 22:51:10 ✅ Draft ✅ Audit ✅ Report

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9

IEC 61000-6-4

IEC 61000-6-4 is a **generic emission standard** for industrial-environment equipment; its Chinese counterpart is **GB/T 17799.4**. Both are TIER 1 generic standards — they apply only when no product-family EMC standa…

🟡 MEDIUM 🕒 2026-10-07 22:46:14 ✅ Draft ✅ Audit ✅ Report

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10

IEC 61000-6-2

Scope: EMC generic **immunity** standard for industrial environments — IEC 61000-6-2 vs Chinese adoption GB/T 17799.2. Landscape: GB/T 17799.2-2023 is **IDT** with IEC 61000-6-2:2016 (Ed. 3.0); older GB/T 17799.2-2003…

🟡 MEDIUM 🕒 2026-10-07 22:26:09 ✅ Draft ✅ Audit ✅ Report

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11

IEC 61326-1

IEC 61326-1 is a **horizontal EMC (电磁兼容) standard** for electrical equipment for measurement, control and laboratory use — not a product standard. Its Chinese adoption is **GB/T 18268.1-2025 (CURRENT, 现行)**, technical…

🟡 MEDIUM 🕒 2026-10-07 22:18:56 ✅ Draft ✅ Audit ✅ Report

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12

IEC 61010-1

Scope: electrical equipment for measurement, control and laboratory use (测量、控制和实验室用电气设备) — safety of the general product plus its Part 2 sub-categories. The Chinese GB 4793 series is an IDT adoption of an **older IEC …

🔴 LOW 🕒 2026-10-07 21:20:33 ✅ Draft ✅ Audit ✅ Report

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13

GB7323-94

The query "GB7323-94" is **ambiguous**: two independent AI drafts identified two entirely different standards. **Official authority (std.samr.gov.cn) confirms GB 7323-1994 is WITHDRAWN (废止)** — no current replacement …

🔴 LOW 🕒 2026-10-02 17:27:17 ✅ Draft ✅ Audit ✅ Report

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14

GB/T 13752, GB/T 5031, GB 5144 VS EN 14439

This report covers the **tower crane (塔式起重机)** standard family: two recommended product/design standards (GB/T 13752, GB/T 5031), one **mandatory** safety code (GB 5144), versus the European harmonised product standar…

🟡 MEDIUM 🕒 2026-10-02 15:47:33 ✅ Draft ✅ Audit ✅ Report

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15

GB/T 13752 and EN 14439

Scope: tower cranes (塔式起重机) — design rules, product standard, mandatory safety code, and installation code. The two cited documents are **cross-tier**: GB/T 13752-2017 is a design/calculation standard (设计规范), EN 14439…

🟡 MEDIUM 🕒 2026-10-02 14:43:39 ✅ Draft ✅ Audit ✅ Report

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16

BS EN ISO 787-9:2019

Scope: pH determination of aqueous pigment/extender suspensions — a **TIER 2 test-method standard**, not a product spec. BS EN ISO 787-9:2019 is an identical adoption of ISO 787-9:2019; the Chinese counterpart is **GB…

🔴 LOW 🕒 2026-09-28 22:00:10 ✅ Draft ✅ Audit ✅ Report

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17

BS EN ISO 787

BS EN ISO 787 is a **multi-part TIER 2 test-method series** for pigments and extenders (颜料和体质颜料), not a product specification. Its Chinese counterpart is the GB/T 5211 series (颜料和体质颜料通用试验方法). Equivalence is largely ID…

🟡 MEDIUM 🕒 2026-09-28 21:59:11 ✅ Draft ✅ Audit ✅ Report

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18

gb/t805

The query "gb/t805" resolves to **GB/T 805-1988 扣紧螺母 (Prevailing-torque hexagon lock nuts)** — a fastener product standard, NOT the steel-wire-rope series (Answer A's premise is incorrect). Answer B correctly identifi…

🟡 MEDIUM 🕒 2026-09-23 16:39:51 ✅ Draft ✅ Audit ✅ Report

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19

iso gps

Scope: geographic information — coordinate-based positioning services (地理信息 基于坐标的定位服务), a **service/interface data-model standard**, NOT a GPS hardware standard. Both GB/T 27668 and ISO 19116 sit at the same tier (ser…

🔴 LOW 🕒 2026-09-18 19:52:12 ✅ Draft ✅ Audit ✅ Report

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20

bs en 50288-7

BS EN 50288-7 covers 仪表和控制电缆 (Instrumentation and control cables) — a niche industrial signal-transmission category (4–20 mA, thermocouple extension, fieldbus). **No direct GB product standard exists**; China regulate…

🔴 LOW 🕒 2026-09-16 11:22:58 ✅ Draft ✅ Audit ✅ Report

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