GB/T 4343.2-2020 Electromagnetic compatibility requirements for household appliances, electric tools and similar apparatus - Part 2 : Immunity
1 Scope
1.1 This part deals with the electromagnetic immunity of appliances and similar apparatus for household and similar purposes that use electricity, as well as electric toys and electric tools, the rated voltage of the apparatus being not more than 250 V for single-phase apparatus to be connected to phase and neutral, and 480 V for other apparatus.
Apparatus may incorporate motors, heating elements or their combination, may contain electric or electronic circuitry, and may be powered by the mains, by transformer, by batteries, or by any other electrical power source.
Apparatus not intended for household use, but which nevertheless may require the immunity level, such as apparatus intended to be used by laymen in shops, in light industry and on farms, are within the scope of this standard, as far as they are included in GB 4343.1. In addition, the following are also included in the scope of this standard:
- microwave ovens for domestic use and catering;
- cooking hobs and cooking ovens, heated by means of r.f. energy;
- (single- and multiple-zone) induction cooking appliances;
- appliances for personal care equipped with radiators in the range from UV to IR, inclusive (this includes visible light);
- power supplies and battery chargers provided with or intended for apparatus within the scope of this standard.
1.2 This standard does not apply to:
- equipment for lighting purposes;
- apparatus designed exclusively for heavy industrial purposes;
- apparatus intended to be part of the fixed electrical installation of buildings (such as fuses, circuit breakers, cables and switches);
- apparatus intended to be used in locations where special electromagnetic conditions prevail, such as the presence of high electromagnetic fields (for example in the vicinity of a broadcast transmitting station), or where high pulses occur on the power network (such as in a power generator station);
- radio and television receivers, audio and video equipment, and electronic music instruments other than toys;
- medical electrical appliances;
- personal computers and similar equipment other than toys;
- radio transmitters;
- apparatus designed to be used exclusively in vehicles;
- babies surveillance systems.
1.3 Immunity requirements in the frequency range 0 Hz to 400 GHz are covered.
1.4 The effects of electromagnetic phenomena relating to the safety of apparatus are excluded from this standard and are covered by other standards, for example in the GB 4706 series. Abnormal operation of the apparatus (such as simulated faults in the electric circuitry for testing purposes) is not taken into consideration.
Note: Attention is drawn to the fact that additional requirements may be necessary for apparatus intended to be used on board ships or aircraft.
1.5 The object of this standard is to specify the immunity requirements for apparatus defined in the scope in relation to continuous and transient, conducted and radiated electromagnetic disturbances, including electrostatic discharges.
These requirements represent essential electromagnetic compatibility immunity requirements.
Note: In special cases, situations will arise where the level of disturbances may exceed the test values specified in this standard. In these instances special mitigation measures may have to be employed.
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 edition of the referenced document (including any amendments) applies
GB 4343.1-2018 Electromagnetic compatibility requirements for household appliances,electric tools and similar apparatus - Part 1 : Emission (CISPR 14-1: 2005+AMD 1:2008+AMD 2:2011, IDT)
GB/T 17626.2-2018 Electromagnetic compatibility - Testing and measurement techniques -Electrostatic discharge immunity test (IEC 61000-4-2:2008, IDT)
GB/T 17626.3-2016 Electromagnetic compatibility - Testing and measurement techniques - Radiated, radio-frequency, electromagnetic field immunity test (IEC 61000-4-3: 2006+AMD 1:2007+AMD 2:2010, IDT)
GB/T 17626.4-2018 Electromagnetic compatibility - Testing and measurement techniques - Electrical fast transient/burstimmunity test (IEC 61000-4-4: 2012, IDT)
GB/T 17626.5-2019 Electromagnetic compatibility - Testing and measurement techniques - Surge immunity test (IEC 61000-4-5: 2014, IDT)
GB/T 17626.6-2017 Electromagnetic compatibility - Testing and measurement techniques -Immunity to conducted disturbances,induced by radio-frequency fields (IEC 61000-4-6: 2013, IDT)
GB/T 17626.11-2008 Electromagnetic compatibility - Testing and measurement techniques - Voltage dips，short interruptions and voltage variations immunity tests (IEC 61000-4-11:2004, IDT)
GB/T 17626.22-2017 Electromagnetic compatibility(EMC) - Testing and measurement techniques - Radiated emissions and immunity measurements in fully anechoic rooms(FARs) (IEC 61000-4-22:2010, IDT)
IEC 60050-161 International Electrotechnical Vocabulary (IEV) - Part 161: Electromagnetic compatibility
3 Terms, definitions and abbreviations
3.1 Terms and definitions
For the purposes of this document, the terms and definitions found in IEC 60050-161 as well as the following apply.
3.1.1
electromagnetic compatibility
ability of a device, unit of equipment or system to function satisfactorily in its electro-magnetic environment without introducing intolerable electromagnetic disturbances to anything in that environment
3.1.2
port
particular interface of the specified apparatus with the external electromagnetic environment
Note: See Figure 1.
3.1.3
enclosure port
physical boundary of the apparatus through which electromagnetic fields may radiate or impinge
3.1.4
series production
production process in which identical apparatus are manufactured continuously or in batches (consisting of identical products)
3.1.5
safety extra-low voltage
voltage which does not exceed 50 V a.c. or 120 V ripple free d.c. between conductors, or between any conductor and earth, in a circuit which is isolated from the supply mains by such means as a safety isolating transformer
3.1.6
toy
product intended for use in play by children under 1 4 years old
Note 1: Toys may incorporate motors, heating elements, electronic circuits and their combination.
Note 2: The supply voltage of a toy shall not exceed 24 V a.c. (r.m.s.) or ripple-free d.c. and may be provided by a battery or by means of an adapter or a safety transformer connected to the mains supply.
Note 3: Transformers, converters and chargers for toys are considered not to be part of the toy (see GB/T 19212.8).
3.1.7
electric toy
toy having at least one function dependent on electricity
3.1.8
battery toy
toy which contains or uses one or more batteries as the only source of electrical energy
3.1.9
transformer toy
toy which is connected to the supply mains through a transformer for toys and using the supply mains as the only source of electrical energy
3.1.10
dual supply toy
toy which can be operated simultaneously or alternatively as a battery toy and a transformer toy
3.1.11
safety isolating transformer
transformer, the input winding of which is electrically separated from the output winding by an insulation at least equivalent to double insulation or reinforced insulation, and which is designed to supply an appliance or circuit at safety extra-low voltage
3.1.12
safety transformer for toys
safety isolating transformer specially designed to supply toys operating at safety extra-low voltage not exceeding 24 V
Note: Either a.c. or d.c. or both may be delivered from the transformer unit.
3.1.13
constructional kit
collection of electric, electronic or mechanical parts intended to be assembled as various toys
3.1.14
experimental kit
collection of electric or electronic components intended to be assembled in various combinations
Note: The main aim of an experimental set is to facilitate the acquiring of knowledge by experiment and research. It is not intended to create a toy or equipment for practical use.
3.1.15
functional toy
toy with a rated voltage not exceeding 24 V and which is a model of an appliance or installation used by adults
Note: A product with a rated voltage exceeding 24 V, intended to be used by children under the direct supervision of an adult and which is a model of an appliance or installation and used in the same way, is known as a functional product.
Contents
Foreword I
Introduction III
1 Scope
2 Normative references
3 Terms, definitions and abbreviations
4 Classification of apparatus
5 Tests
6 Performance criteria
7 Applicability of immunity tests
8 Conditions during testing
9 Assessment of conformity
Annex A (Informative) Guidance for permissible degradation
Bibliography
Figure 1 Examples of ports
Figure 2 Example for a test set-up for large EUTs (e. g. refrigerators) where the cable leaves the EUT on a height of more than 1 m above the floor
Table 1 Enclosure port
Table 2 Ports for signal lines and control lines
Table 3 Input and output d.c. power ports
Table 4 Input and output a.c. power ports
Table 5 Ports for signal lines and control lines
Table 6 Input and output d.c. power ports
Table 7 Input and output a.c. power ports
Table 8 Ports for signal lines and control lines
Table 9 Input and output d.c. power ports
Table 10 Input and output a.c. power ports
Table 11 Enclosure port
Table 12 Input a.c. power ports
Table 13 Input a.c. power ports
Table A.1 Examples of degradations
