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GB/T 4706.128-2025Safety of household and similar electrical appliances — Part 128: Particular requirements for fresh-air air cleaner (English PDF)

家用和类似用途电器的安全 第128部分:新风净化机的特殊要求

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

August 29, 2025

Implementation date

August 1, 2026

Scope

GB/T 4706.128-2025 is the English-translated version of 家用和类似用途电器的安全 第128部分:新风净化机的特殊要求.

GB/T 4706.128-2025 is the Chinese national standard covering the fresh-air unit that draws outdoor air through a filter into a dwelling, treated here as an electrical appliance rather than as a cleaner — the heating and the leakage current in service, the moisture resistance of a unit that sits in a wall between wet outside and dry inside, the abnormal operation and endurance runs, the mechanical strength and construction, the wiring, earthing and creepage distances, and the fire behaviour.

Part 128 of the series, used together with the general requirements GB/T 4706.1-2024. First edition, under the China National Light Industry Council. In force from 1 August 2026. Issued on 29 August 2025, it has been in force since 1 August 2026.

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Document preview — GB/T 4706.128-2025

National Standard of the People's Republic of China

ICS
13.120
Classification
K 09

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

Contents

  • 1 Scope
  • 2 Normative References
  • 3 Terms and definitions
  • 4 General Requirements
  • 5 General conditions for the experiment
  • 6 Categories
  • 7 Signs and Instructions
  • 10 Input power and current
  • 11 Fever
  • 12 Empty Chapters
  • 14 Transient Overvoltage
  • 15 Moisture resistant
  • 16 Leakage current and electrical strength
  • 17 Overload protection for transformers and related circuits
  • 18 Durability
  • 19 Abnormal work
  • 20 Stability and Mechanical Hazards
  • 21 Mechanical strength
  • 22 Structure
  • 23 Internal wiring
  • 25 Power connection and external flexible cord
  • 26 Wiring terminals for external conductors
  • 27 Grounding Measures
  • 29 Electrical clearances, creepage distances, and solid insulation
  • 30 Heat resistant and flame resistant
  • 31 Rust prevention
  • 32 Radiation, toxicity, and similar hazards

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1: Structure and drafting rules for standardization documents" Drafting.

This document is Part 128 of GB/T 4706 "Safety of Household and Similar Electrical Appliances". GB/T 4706 has been published as follows part.

— Part 1: General requirements (GB/T 4706.1);

— Part 2: Particular requirements for electric irons (GB/T 4706.2);

— Part 128.Particular requirements for fresh air purifiers (GB/T 4706.128).

Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents.

This document was proposed by the China Light Industry Federation.

This document is under the jurisdiction of the National Technical Committee for Standardization of Household Electrical Appliances (SAC/TC46).

This document was drafted by: China Household Electrical Appliance Research Institute, Xiamen Dinake Environmental Intelligent Technology Co., Ltd., Xiaomi Smart Home Appliances (Wuhan) Co., Ltd., Zhejiang Zhongguang Electric Appliance Group Co., Ltd., China Academy of Building Research (Beijing) Testing and Certification Co., Ltd., Qingdao Haier Air Conditioner Co., Ltd.

Company, Daikin (China) Investment Co., Ltd., Guangdong Panasonic Environmental Systems Co., Ltd., China Quality Certification Center Co., Ltd. Shenzhen Branch, Shandong Xuesheng Environmental Engineering Co., Ltd., Guangdong Midea Refrigeration Equipment Co., Ltd., Qingdao Hisense Hitachi Air Conditioning System Co., Ltd., Guangdong Ludao Feng Air System Co., Ltd., Lanshe Ventilation System Co., Ltd., Leling Haiyu Auto Parts Manufacturing Co., Ltd., Jiangxi Wotai Environmental Bao Technology Co., Ltd., Weike Testing Technology Co., Ltd., and Anhui Zhongren Beijia Technology Co., Ltd.

The main drafters of the document. Yan Ling, Chen Ping, Shan Lianyu, Xu Lei, Ling Yongjun, Chen Songtao, Zhang Fei, Yan Liang, Lai Guiqing, Yang Fei, Lou Weibin, Zhang Weichao, Chen Zhiwei, Zhang Wenqiang, Jie Bochao, Xu Xin, Liu Xiaolei, Sun Dianjun, Jin Junfang, Yang Xianfei, and He Yunyue.

3.1.9 Normal Operation

Appliance running under:

Manufacturer's instructions.

3.101 Fresh-Air Circulator

Appliance exchanging outdoor air and delivering processed clean air directly to rooms.

Note: May include heat recovery, auxiliary heating, humidification, or dehumidification.

3.102 Publicly Accessible Appliances

Units placed in unrestricted areas of residential/commercial buildings.

3.104 Heat Exchanger

Heat transfer device in fresh-air circulators for air-to-air energy exchange (sensible/latent heat).

4. General Requirements

GB/T 4706.1—2024 applies unless modified herein.

7 Signs and Instructions

8 pairs of protection against touching live parts

9. Starting of Electric Appliances

12 Empty Chapters

Leakage current and electrical strength at operating temperature 13

27 Grounding Measures

28 screws and connections

29 Electrical clearances, creepage distances, and solid insulation

30 Heat resistant and flame resistant

32 Radiation, toxicity, and similar hazards Appendix References 1. Scope

This clause of GB/T 4706.1—2024 is replaced by the following.

This document specifies safety requirements for household and similar fresh-air circulators.

It applies to single-phase appliances with a rated voltage not exceeding 250 V and other appliances with a rated voltage not exceeding 480 V.

Note 101: Examples of appliances within scope:

Uni-directional fresh-air circulators (supply only, no exhaust);

Bi-directional fresh-air circulators (both supply and exhaust);

Heat recovery fresh-air circulators;

Fresh-air circulators with auxiliary heating;

Other functional variants (GB/T 4706 parts may apply to additional functions, e.g., air conditioning aspects under GB/T 4706.32).

Appliances not for general household use but still posing public hazards (e.g., used in shops, light industry, or farms by non-professionals) are covered.

Note 102: Exclusions:

Ducted fans (GB/T 4706.27);

Humidifiers with HVAC systems (without fresh-air function, GB/T 4706.105);

Heat pumps, air conditioners, and dehumidifiers (GB/T 4706.32);

Industrial-grade fresh-air circulators;

Units for corrosive/explosive environments (dust, vapor, gas).

2. Normative References

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 17 pages — is available in the English PDF.

Referenced standards

Editions of GB/T 4706.128

EditionTitleRevisionStatus
GB/T 4706.128-2025Safety of household and similar electrical appliances - Part 128: Particular requirements for fresh-air air cleanercurrent editionCurrent

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