Detail of GB/T 4706.1-2024

Introduction of GB/T 4706.1-2024

GB/T 4706.1-2024 Safety of household and similar electrical appliances - Part 1: General requirements 1 Scope This document specifies the safety requirements for household and similar electrical appliances. This document deals with the safety of electrical appliances for household andsimilar purposes, their rated voltage being not more than 250 V for single-phase appliancesand 480 V for other appliances. Note 1: Battery-operated appliances and other d.c. supplied appliances are within the scope of this standard.Dual supply appliances, either mains-supplied or battery-operated, are regarded as battery-operated applianceswhen operated in the battery mode. Appliances not intended for normal household use but which nevertheless may be a source ofdanger to the public, such as appliances intended to be used by lavmen in shops. in lightindustry and on farms, are within the scope of this standard. Note 2: Examples of such appliances are catering equipment, cleaning appliances for commercial use, andappliances for hairdressers. This document deals with the reasonably foreseeablehazards presented by appliances that are encountered by all persons.However, in general, it does not take into account ——persons (including children) whose physical,sensory or mental capabilities; or lack of experience and knowledge prevents them from using the appliance safely without supervision or instruction: ——children playing with the appliance. Note 3: Attention is drawn to the fact that ——for appliances intended to be used in vehicles or on board ships or aircraft, additional requirements may benecessary; ——in many countries, additional reguirements are specified by the national health authorities, the national authorities responsible for the protection of labour, the national water supply authorities and similar authorities. Note 4: This standard does not apply to ——appliances intended exclusively for industrial purposes; ——appliances intended to be used in locations where special conditions prevail, such as the presence of acorrosive or explosive atmosphere(dust,vapour or gas); ——audio, video and similar electronic apparatus (lEC 60065); ——appliances for medical purposes (lEC 60601); ——hand-held motor-operated electric tools (lEC 60745): ——personal computers and similar equipment (lEC 60950-1): ——transportable motor-operated electric tools (lEC 61029) 2 Normative references The following referenced documents are indispensable for the application of this document.For dated references. only the edition cited applies. For undated references, the latest editionof the referenced document (including any amendments) applies. GB/T 11021-2014 Electrical insulation - Thermal evaluation and designation (IEC 60085:2007, IDT) GB/T 12113-2023 Methods of measurement of touch current and protective conductor current (IEC 60990:2016, IDT) GB/T 14536.9-2008 Automatic electrical controls for household and similar use - Particular requirements for electrically operated water valves including mechanical requirements (IEC 60730-2-8:2003, IDT) GB/T 16842-2016 Protection of persons and equipment by enclosures - Probe for verification (IEC 61032:1997, IDT) GB/T 16935.1-2008 Insulation coordination for equipment within low-voltage systems - Part 1: Principles requirements and tests (IEC 60664-1:2007, IDT) 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. Note 1: An Index of the defined terms is provided at the end of this publication. Note 2: When the terms "voltage" and "current" are used, they are r.m.s. values, unless otherwise specified. 3.1 Definitions relating to physical characteristics 3.1.1 rated voltage voltage assigned to the appliance by the manufacturer 3.1.2 rated voltage range voltage range assigned to the appliance by the manufacturer, expressed by its lower andupper limits 3.1.3 working voltage maximum voltage to which the part under consideration is subjected when the appliance issupplied at its rated voltage and operating under normal operation, with controls andswitching devices positioned so as to maximize the value Note 1: Working voltage takes into account resonant voltages. Note 2: When deducing the working voltage, the effect of transient voltages is ignored. 3.1.4 rated power input power input assigned to the appliance by the manufacturer Note: lf no power input is assigned to the appliance, the rated power input for heating appliances andcombined appliances is the power input measured when the appliance is supplied at rated voltage and operatedunder normal operation. 3.1.5 rated power input range power input range assigned to the appliance by the manufacturer, expressed by its lower andupper limits 3.1.6 rated current current assigned to the appliance by the manufacturer Note: If no current is assigned to the appliance, the rated current is ——for heating appliances, the current calculated from the rated power input and the rated voltage; ——for motor-operated appliances and combined appliances, the current measured when the appliance issupplied at rated voltage and operated under normal operation. 3.1.7 rated frequency frequency assigned to the appliance by the manufacturer 3.1.8 rated frequency range frequency range assigned to the appliance by the manufacturer, expressed by its lower andupper limits 3.1.9 normal operation conditions under which the appliance is operated in normal use when it is connected to thesupply mains 3.1.10 rated impulse voltage voltage derived from the rated voltage and the overvoltage category of the appliancecharacterizing the specified withstand capability of its insulation against transient over-voltages 3.1.11 dangerous malfunction unintended operation of the appliance that may impair safety

Contents of GB/T 4706.1-2024

Foreword I Introduction V 1 Scope 2 Normative references 3 Terms and definitions 4 General requirement 5 General conditions for the tests 6 Classification 7 Marking and instructions 8 Protection against access to live parts 9 Starting of motor-operated appliances 10 Power input and current 11 Heating 12 Void 13 Leakage current and electric strength at operating temperature 14 Transient overvoltages 15 Moisture resistance 16 Leakage current and electric strength 17 Overload protection of transformers and associated circuits 18 Endurance 19 Abnormal operation 20 Stability and mechanical hazards 21 Mechanical strength 22 Construction 23 Internal wiring 24 Components 25 Supply connection and external flexible cords 26 Terminals for external conductors 27 Provision for earthing 28 Screws and connections 29 Clearances, acreage distances and solid insulation 30 Resistance to heat and fire 31 Resistance to rusting 32 Radiation, toxicity and similar hazards Annex A (informative) Routine tests Annex B (normative) Appliances powered by rechargeable batteries that are recharged in the appliance Annex C (normative) Ageing test on motors Annex D (normative) Thermal motor protectors Annex E (normative) Needle-flame test Annex F (normative) Capacitors Annex G (normative) Safety isolating transformers Annex H (normative) Switches Annex I (normative) Motors having basic insulation that is inadequate for the rated voltage of the appliance Annex J (normative) Coated printed circuit boards Annex K (normative) over voltage categories Annex L (informative) Guidance for the measurement of clearances and acreage distances Annex M (normative) Pollution degree Annex N (normative) Proof tracking test Annex O (informative) Selection and sequence of the tests of Clause 30 Annex P (informative) Guidance for the application of this standard to appliances used in warm damp equable climates Annex Q (informative) Sequence of tests for the evaluation of electronic circuits Annex R (normative) Software evaluation Annex S (normative) Battery-operated appliances powered by batteries that are non-rechargeable or not recharged in the appliance Annex T (normative) UV radiation effect on non-metallic materials Bibliography Index of defined words