This standard applies to the safety of electric humidifiers for household and similar purposes with a rated voltage not exceeding 250V, which evaporate or atomize water to humidify indoor air. Humidifiers that are not for household use but are intended to be used by laymen in shops, light industry and farms as long as they may be dangerous to the public are also included in the scope of this standard. In terms of practicality, this standard deals with humidifiers that are dangerous to the public in the home and within the reach of everyone. This standard does not usually consider: - Use of appliances by unattended children or infirm persons; - Children using appliances as toys. GB 4706.48-2000 Safety of household and similar electrical appliances Special requirements for humidifiers GB4706.48-2000 Standard download decompression password: www.bzxz.net

GB4706.48—2000
This standard is equivalent to IEC60335-2-98:1997 Safety of household and similar electrical appliances Part 2: Particular requirements for humidifiers. This standard should be used in conjunction with GB4706.1—1998 General safety requirements for household and similar electrical appliances.
The parts of this standard marked with "applicable" indicate that the corresponding provisions in GB4706.1-1998 are applicable to this standard; the parts of this standard marked with "replacement" or "modification" shall be subject to this standard; the parts of this standard marked with "addition" indicate that in addition to complying with the corresponding provisions in GB4706.1-1998, they shall also comply with the provisions added to this standard. This standard was proposed and coordinated by the National Technical Committee for Standardization of Household Electrical Appliances. The main drafting unit of this standard: China Household Electrical Appliance Research Institute. The main drafters of this standard are Liu Qing, Wang Huirong, Li Xianli, and Xu Li. This standard is entrusted to the National Technical Committee for Standardization of Household Electrical Appliances for interpretation. GB4706.48—2000
IEC Foreword
1) IEC (International Electrotechnical Commission) is an international standardization organization composed of all national electrotechnical committees (IEC National Committees). Its purpose is to promote international cooperation on standardization issues in the electrical and electronic fields. To this end, IEC carries out international standardization activities and publishes international standards. The formulation of these standards is entrusted to technical committees. Any IEC National Committee interested in the technical issue can participate in the formulation work. International, governmental and non-governmental organizations that have relations with IEC can also participate in this work. IEC and the International Organization for Standardization (ISO) work closely on the basis of an agreement between the two organizations. 2) Formal decisions and agreements of IEC on technical issues, formulated by technical committees in which all national committees with a particular interest in the issue participate, represent, as far as possible, the international consensus on the issues involved. 3) These formal resolutions or agreements are published in the form of standards, technical reports or guidelines and are accepted by the National Committees in this sense.
4) In order to achieve international consistency, IEC National Committees agree to use IEC International Standards to the greatest extent possible in their national and regional standards. Differences between TEC standards and corresponding national or regional standards should be clearly marked in the latter: 5) IEC has not established a procedure for the recognition mark. IEC does not assume any responsibility for the claim that a device conforms to an IEC standard.
6) As far as possible, attention should be paid to the fact that some elements of this standard may involve patent rights. IEC does not take any position on any patent rights. This standard was prepared by IEC Technical Committee 61 (Safety of Household and Similar Electrical Appliances). This standard constitutes the first edition of IEC60335-2-98. This standard is based on the following documents:
61/1100/DIS
Voting Report
61/1268/RVL
Full material on the adoption of this standard can be found in the voting report shown above. This standard shall be used in conjunction with the latest edition of IEC 60335-1 and its supplements. This standard is based on the third edition (1991) of IEC 60335-1.
This standard supplements or modifies the corresponding clauses of IEC 60335-1, thereby converting it into this standard: Particular requirements for humidifiers. The clauses of IEC 60335-1 not mentioned in this standard may be used as long as it is reasonable. The places marked with "addition", "modification" or "replacement" in this standard are the corresponding modifications to the relevant clauses of IEC 60335-1. Note
1 This standard uses the following printing fonts: Requirements: in regular font!
Test specifications: in italics;
Notes: in small regular font.
The boldface words in the text are defined in Chapter 2. When the definition of [IEC 60335-1 involves adjectives, the adjectives and corresponding nouns are also in boldface. 2 The numbering of the clauses and tables added to this standard starts from 101. The following differences exist in some countries:
Chapter 1: Electrode-type appliances are only allowed if they are intended to be permanently connected to fixed wiring (Netherlands). - 7.12.1: Minimum rated pressure is 1.0 MPa (Denmark, Sweden and Norway) - 24.101 This requirement does not apply (USA). 1 Scope
National Standard of the People's Republic of China
Safety of household and similar electrical appliances
Particular requirements for humidifiers
Safety of household and similar electrical appliancesParticular requirements to humidifiersGB4706.1-1998 This chapter is replaced by the following: GB 4706.48-2000
idt IEC 60335-2-98:1997
This standard applies to the safety of household and similar electrical humidifiers with a rated voltage not exceeding 250V, which humidify indoor air by evaporation or atomization of water.
Note 1: Evaporation is obtained by heating water or by spraying humidifying air through a humidifying element. Humidifiers not intended for household use but intended for use by laymen in shops, light industry and farms are also included in the scope of this standard as long as they may be dangerous to the public. As far as practical, this standard deals with humidifiers that are used in the home and within the reach of all persons and that present a danger to the public. This standard does not normally take into account:
the use of the appliance by unsupervised children or infirm persons;
the use of the appliance by children as a toy.
NOTE 2: The following facts should be noted!
Humidifiers used in vehicles, ships or aircraft may, if necessary, have additional requirements; humidifiers used in tropical areas may, if necessary, have special requirements. In many countries, additional requirements are laid down by the national health authorities, the national labor protection authorities and similar authorities. NOTE 3: This standard does not apply to:
Humidifiers for heating and cooling systems (IEC 60335-2-B8):
humidifiers for medical use (IEC 60601);
humidifiers for industrial use,
humidifiers for use in special environments. For example, environments with corrosive or explosive gases (dust, vapours or gases). 2 Definitions
This clause in GB 4706.1—1998 is applicable except for the following. 2.2.9 Replacement:
Normal operation
The appliance is filled with the maximum amount of water as required by the instructions for use. Unless the appliance is connected to a water supply and the water addition is automatically controlled. For electrode-type humidifiers, the resistivity of the water should be about 5000·cm at 20℃±5℃. Note: The conductivity can be obtained by adding ammonium phosphate to the water. 2.101 Electrode-type humidifier Electrode-type appliance The conductive liquid in the appliance is heated by the current flowing through it. Approved by the State Administration of Quality and Technical Supervision on March 16, 2000 and implemented on March 1, 2001
3 General requirements
This clause in GB 4706.1—1998 is applicable. 4 General conditions for testing
GE 4706.48—2000
This clause in GB 4706.1—1998 is applicable except for the following. A.6 Added:
The humidifier is short-circuited or rendered inoperative. 5 Blank clauses
6 Classification
This clause in GB 4706.1—1998 is applicable 7 Markings and instructions
This clause in GB 4706.1—1998 is applicable except for the following. 7.1 Added:
When the rated capacity of water is filled, the appliance shall have a water level mark or other indicating device. Unless water exceeding the rated capacity cannot be filled. This mark shall be visible when the appliance is filled. For appliances with manual filling, where the amount of water can exceed the rated capacity, the appliance shall have a water level mark or other means to indicate that the rated capacity has been filled. This mark should be visible when the appliance is filled with water. If the temperature of water or steam exceeds 60℃, the appliance should be marked with the following: Note: Hot water
Note: Hot steam
7.12 Add:
The instructions for use should include:
The amount and composition of the liquid used. If salt water is used, it should be warned not to use too much salt; the instructions for filling, cleaning and descaling (if applicable) should include:
Warning to prevent scalding by steam
Electrode humidifiers cannot use DC power: Do not turn on the power when filling and cleaning.
7.12.1 Added:
Appliances connected to the water supply line shall be marked with the maximum permissible water pressure in Pascals in the installation instructions. 8 Protection against contact with live parts
This chapter in GB4706.1-1998 is applicable. 9 Starting of electric appliances
This chapter in GB4706.1-1998 is not applicable. 10 Input power and current
GB 4706.48-2000
This chapter in GB4706.1-1998 is applicable except for the following contents. 10.1 Added:
Measure the maximum input power of electrode humidifiers. In the past, electrode humidifiers did not limit negative deviation. 10.2 Added:
Measure the maximum input current of electrode humidifiers. Note: Electrode humidifiers are not strictly controlled for negative deviation. 11 Heating
This chapter in GB 4706.1-1998 is applicable except for the following contents. 11.4 Replacement:
Electrode humidifiers operate at 1.06 times the rated voltage instead of 1.15 times the rated input power. Addition:
If the temperature rise of the motor, transformer or electronic circuit installed in the appliance exceeds the limit value and the input power is lower than the rated input power, the appliance is repeated at 1.06 times the rated voltage. 11.6 Replacement:
Combination appliances are operated as electric heating appliances. 11.7 Replacement:
The appliance is operated until a steady state is established. 11.8 Addition:
When the appliance is operated at 1.15 times the rated input power, the temperature rise of the components of the motor, transformer or electronic circuit and the parts directly affected by them may exceed their respective temperature rise limit values. 12 Blank Chapter
13 Leakage current and electrical strength at operating temperature This chapter in GB 4706.1-1998 is applicable except for the following contents. 13.1 Replacement:
Electrode humidifiers operating at 1.06 times the rated voltage instead of 1.15 times the rated input power. 13.2 Addition:
For electrode humidifiers, the leakage current between the metal mesh placed in the steam 10 mm away from the outlet and the easily accessible metal parts shall also be measured.
The leakage current shall not exceed 0.25 mA,
Note: easily fusible and metal parts include metal boxes. 14 Empty chapter
15 Moisture resistance
This chapter in GB4706.1-1998 is applicable except for the following contents. 15.2 Added:
When uncertain, conduct an overflow test, and the angle of the device from the normal use position should not exceed 5". GB 4706. 48-2000
Operation of appliances intended to be directly connected to the water supply pipe, after reaching the maximum water level. The water inlet valve remains open and continues to fill water for 15 minutes after the first sign of overflow, or until the water filling is automatically stopped by other devices. 16 Leakage current and electrical strength
This chapter in GB4706.1-1998 is applicable. 17 Overload protection of transformers and related circuits This chapter in GB4706.1-1998 is applicable. 18 Durability
This chapter in GB4706.1-1998 is not applicable. 19 Non Normal operation
This chapter in GB4706.1--1998 is applicable except for the following contents. 19.2 Added:
When the electrode humidifier is tested, the container is filled with saturated NaCl liquid at 20℃±5C, and the appliance is powered at rated voltage. Note: Saturated solution refers to the aqueous solution when salt is no longer soluble. 19.3 Added:
This test is not applicable to electrode humidifiers. 19.4 Added:
Inject enough water into the appliance to cover the heating element. Turn off the fan.
20 Stability and mechanical hazards
GB This chapter in GB4706.1—1998 is applicable. 21 Mechanical strength
This chapter in GB4706.1—1998 is applicable. 22 Structure
This chapter in GB4706.1—1998 is applicable except for the following. 22.6 Added:
The diameter of the drain hole shall be at least 5 mm, or a cross-sectional area of ​​20 mm with a width of at least 3 mm. Compliance is determined by measurement.
22.101 The steam outlet of appliances equipped with water heating devices shall be able to avoid blockage, as such blockage will significantly increase the pressure in the container. The structure of these appliances shall be able to The minimum cut-out area of ​​20 mm and the minimum size of the hole of 3 mm make the appliance always under atmospheric pressure.
Compliance is determined by inspection and measurement. 22.102 Appliances mounted on the wall should be fixed to the wall by reliable means and connected to the water supply pipe separately. Compliance is determined by inspection.
22.103 Electrode humidifiers should be constructed so that when the appliance is opened for water filling, the two poles can be disconnected, and the contact gap of each pole should be at least 3 mm.
Note: Appliances that require the removal of the connector to access the water filling hole should comply with this requirement. Compliance is determined by inspection and measurement.
GB 4706.48-200D
22.104 Appliances intended to be connected to the water supply pipe should be able to withstand the water pressure required for normal use. By connecting the appliance to a water source with a static water pressure equal to twice the maximum inlet water pressure or 1.2 MPa. Whichever is higher. Withstand 5min test, and then determine compliance.
Parts subject to water pressure shall be free from leakage.
23 Internal wiring
This clause of GB4706.1-1998 shall apply. 24 Components
This clause of GB4706.1-1998 shall apply except for the following. 24.101 Thermal cut-outs complying with the requirements of clause 19 shall not be self-resetting. Compliance is determined by regulatory inspection.
25 Power supply connections and external flexible cords
This clause of GB 4706.1-1998 shall apply. 26 Terminals for external conductors
This clause of GB4706.1-1998 shall apply. 27
Grounding provisions
This clause of GB4706.1-1998 shall apply. 2B Screws and connections
This clause of CB 4706.1-1998 shall apply. 29 Creepage distance, electrical clearance and through insulation distance This chapter in GB4706.1-1998 is applicable. 30 Heat resistance, flame resistance and leakage current decay resistance
This chapter in GB4706.1-1998 is applicable except for the following contents. 30.2.2 Not applicable.
30-3 Add
Note: The steel material parts supporting the electrodes of the electrode-type humidifier can be considered as being tested under extremely severe working conditions. 31 Rust prevention
This chapter in GB4706.1-1998 is applicable.
32 Radiation, toxicity and similar hazards
This chapter in GB4706.1-1998 is applicable. The appendices in GB4706.1--1998 are applicable, GB4706.48-20002 Added:
For electrode humidifiers, the leakage current between the metal mesh placed in the steam 10mm away from the outlet and the easily accessible metal parts shall also be measured.
The leakage current shall not exceed 0.25 mA,
Note: easily fusible and metal parts include metal boxes. 14 Blank Chapter
15 Moisture resistance
This chapter in GB4706.1-1998 is applicable except for the following contents. 15.2 Added:
When uncertain, an overflow test shall be carried out. The angle of the device deviating from the normal use position shall not exceed 5". GB 4706. 48—2000
Operation of appliances intended to be connected directly to the water supply pipe, after reaching the maximum water level. The water inlet valve remains open and water continues to be filled for 15 minutes after the first sign of overflow, or until water filling is automatically stopped by other means. 16 Leakage current and electrical strength
This chapter in GB4706.1—1998 is applicable. 17 Overload protection of transformers and related circuits This chapter in GB4706.1—1998 is applicable. 18 Durability
This chapter in GB4706.1—1998 is not applicable. 19 Non Normal operation
This chapter in GB4706.1--1998 is applicable except for the following contents. 19.2 Added:
When the electrode humidifier is tested, the container is filled with saturated NaCl liquid at 20℃±5C, and the appliance is powered at rated voltage. Note: Saturated solution refers to the aqueous solution when salt is no longer soluble. 19.3 Added:
This test is not applicable to electrode humidifiers. 19.4 Added:
Inject enough water into the appliance to cover the heating element. Turn off the fan.
20 Stability and mechanical hazards
GB This chapter in GB4706.1—1998 is applicable. 21 Mechanical strength
This chapter in GB4706.1—1998 is applicable. 22 Structure
This chapter in GB4706.1—1998 is applicable except for the following. 22.6 Added:www.bzxz.net
The diameter of the drain hole shall be at least 5 mm, or a cross-sectional area of ​​20 mm with a width of at least 3 mm. Compliance is determined by measurement.
22.101 The steam outlet of appliances equipped with water heating devices shall be able to avoid blockage, as such blockage will significantly increase the pressure in the container. The structure of these appliances shall be able to The minimum cut-out area of ​​20 mm and the minimum size of the hole of 3 mm make the appliance always under atmospheric pressure.
Compliance is determined by inspection and measurement. 22.102 Appliances mounted on the wall should be fixed to the wall by reliable means and connected to the water supply pipe separately. Compliance is determined by inspection.
22.103 Electrode humidifiers should be constructed so that when the appliance is opened for water filling, the two poles can be disconnected, and the contact gap of each pole should be at least 3 mm.
Note: Appliances that require the removal of the connector to access the water filling hole should comply with this requirement. Compliance is determined by inspection and measurement.
GB 4706.48-200D
22.104 Appliances intended to be connected to the water supply pipe should be able to withstand the water pressure required for normal use. By connecting the appliance to a water source with a static water pressure equal to twice the maximum inlet water pressure or 1.2 MPa. Whichever is higher. Withstand 5min test, and then determine compliance.
Parts subject to water pressure shall be free from leakage.
23 Internal wiring
This clause of GB4706.1-1998 shall apply. 24 Components
This clause of GB4706.1-1998 shall apply except for the following. 24.101 Thermal cut-outs complying with the requirements of clause 19 shall not be self-resetting. Compliance is determined by regulatory inspection.
25 Power supply connections and external flexible cords
This clause of GB 4706.1-1998 shall apply. 26 Terminals for external conductors
This clause of GB4706.1-1998 shall apply. 27
Grounding provisions
This clause of GB4706.1-1998 shall apply. 2B Screws and connections
This clause of CB 4706.1-1998 shall apply. 29 Creepage distance, electrical clearance and through insulation distance This chapter in GB4706.1-1998 is applicable. 30 Heat resistance, flame resistance and leakage current decay resistance
This chapter in GB4706.1-1998 is applicable except for the following contents. 30.2.2 Not applicable.
30-3 Added
Note: The steel material parts supporting the electrodes of the electrode-type humidifier can be considered as being tested under extremely severe working conditions. 31 Rust prevention
This chapter in GB4706.1-1998 is applicable.
32 Radiation, toxicity and similar hazards
This chapter in GB4706.1-1998 is applicable. The appendices in GB4706.1--1998 are applicable, GB4706.48-20002 Added:
For electrode humidifiers, the leakage current between the metal mesh placed in the steam 10mm away from the outlet and the easily accessible metal parts shall also be measured.
The leakage current shall not exceed 0.25 mA,
Note: easily fusible and metal parts include metal boxes. 14 Blank Chapter
15 Moisture resistance
This chapter in GB4706.1-1998 is applicable except for the following contents. 15.2 Added:
When uncertain, an overflow test shall be carried out. The angle of the device deviating from the normal use position shall not exceed 5". GB 4706. 48—2000
Operation of appliances intended to be connected directly to the water supply pipe, after reaching the maximum water level. The water inlet valve remains open and water continues to be filled for 15 minutes after the first sign of overflow, or until water filling is automatically stopped by other means. 16 Leakage current and electrical strength
This chapter in GB4706.1—1998 is applicable. 17 Overload protection of transformers and related circuits This chapter in GB4706.1—1998 is applicable. 18 Durability
This chapter in GB4706.1—1998 is not applicable. 19 Non Normal operation
This chapter in GB4706.1--1998 is applicable except for the following contents. 19.2 Added:
When the electrode humidifier is tested, the container is filled with saturated NaCl liquid at 20℃±5C, and the appliance is powered at rated voltage. Note: Saturated solution refers to the aqueous solution when salt is no longer soluble. 19.3 Added:
This test is not applicable to electrode humidifiers. 19.4 Added:
Inject enough water into the appliance to cover the heating element. Turn off the fan.
20 Stability and mechanical hazards
GB This chapter in GB4706.1—1998 is applicable. 21 Mechanical strength
This chapter in GB4706.1—1998 is applicable. 22 Structure
This chapter in GB4706.1—1998 is applicable except for the following. 22.6 Added:
The diameter of the drain hole shall be at least 5 mm, or a cross-sectional area of ​​20 mm with a width of at least 3 mm. Compliance is determined by measurement.
22.101 The steam outlet of appliances equipped with water heating devices shall be able to avoid blockage, as such blockage will significantly increase the pressure in the container. The structure of these appliances shall be able to The minimum cut-out area of ​​20 mm and the minimum size of the hole of 3 mm make the appliance always under atmospheric pressure.
Compliance is determined by inspection and measurement. 22.102 Appliances mounted on the wall should be fixed to the wall by reliable means and connected to the water supply pipe separately. Compliance is determined by inspection.
22.103 Electrode humidifiers should be constructed so that when the appliance is opened for water filling, the two poles can be disconnected, and the contact gap of each pole should be at least 3 mm.
Note: Appliances that require the removal of the connector to access the water filling hole should comply with this requirement. Compliance is determined by inspection and measurement.
GB 4706.48-200D
22.104 Appliances intended to be connected to the water supply pipe should be able to withstand the water pressure required for normal use. By connecting the appliance to a water source with a static water pressure equal to twice the maximum inlet water pressure or 1.2 MPa. Whichever is higher. Withstand 5min test, and then determine compliance.
Parts subject to water pressure shall be free from leakage.
23 Internal wiring
This clause of GB4706.1-1998 shall apply. 24 Components
This clause of GB4706.1-1998 shall apply except for the following. 24.101 Thermal cut-outs complying with the requirements of clause 19 shall not be self-resetting. Compliance is determined by regulatory inspection.
25 Power supply connections and external flexible cords
This clause of GB 4706.1-1998 shall apply. 26 Terminals for external conductors
This clause of GB4706.1-1998 shall apply. 27
Grounding provisions
This clause of GB4706.1-1998 shall apply. 2B Screws and connections
This clause of CB 4706.1-1998 shall apply. 29 Creepage distance, electrical clearance and through insulation distance This chapter in GB4706.1-1998 is applicable. 30 Heat resistance, flame resistance and leakage current decay resistance
This chapter in GB4706.1-1998 is applicable except for the following contents. 30.2.2 Not applicable.
30-3 Added
Note: The steel material parts supporting the electrodes of the electrode-type humidifier can be considered as being tested under extremely severe working conditions. 31 Rust prevention
This chapter in GB4706.1-1998 is applicable.
32 Radiation, toxicity and similar hazards
This chapter in GB4706.1-1998 is applicable. The appendices in GB4706.1--1998 are applicable, GB4706.48-20001—1998 This chapter is applicable. 27
Grounding measures
This chapter in GB4706.1—1998 is applicable. 2B Screws and connections
CB This chapter in GB4706.1—1998 is applicable. 29 Creepage distance, electrical clearance and through insulation distance This chapter in GB4706.1—1998 is applicable. 30 Heat resistance, flame resistance and leakage current decay resistance
This chapter in GB4706.1—1998 is applicable except for the following contents. 30.2.2 Not applicable.
30-3 Add
Note: The steel material parts supporting the electrodes of the electrode-type humidifier can be considered as being tested under extremely severe working conditions. 31 Rust prevention
This chapter in GB4706.11998 is applicable.
32 Radiation, toxicity and similar hazards
This chapter in GB4706.1-1998 is applicable. The appendices in GB4706.1--1998 are applicable, GB4706.48-20001—1998 This chapter is applicable. 27
Grounding measures
This chapter in GB4706.1—1998 is applicable. 2B Screws and connections
CB This chapter in GB4706.1—1998 is applicable. 29 Creepage distance, electrical clearance and through insulation distance This chapter in GB4706.1—1998 is applicable. 30 Heat resistance, flame resistance and leakage current decay resistance
This chapter in GB4706.1—1998 is applicable except for the following contents. 30.2.2 Not applicable.
30-3 Add
Note: The steel material parts supporting the electrodes of the electrode-type humidifier can be considered as being tested under extremely severe working conditions. 31 Rust prevention
This chapter in GB4706.11998 is applicable.
32 Radiation, toxicity and similar hazards
This chapter in GB4706.1-1998 is applicable. The appendices in GB4706.1--1998 are applicable, GB4706.48-2000
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