GB 4706.41-1998 Safety of portable electric heating tools and similar appliances for household and similar purposes Particular requirements
Some standard content:
This standard adopts the International Electrotechnical Commission IEC335-2-45 (1996) "Safety of Household and Similar Electrical Appliances Part 2 Particular Requirements for Portable Electric Heating Appliances and Similar Appliances". This standard should be used in conjunction with the latest version of GB4706.1% General Requirements for Safety of Household and Similar Electrical Appliances Part 1 (GB4706.1 should be based on the third edition of IEC335-1 (1991)). This standard is formed by supplementing or modifying GB4706.1. If the specific clauses in GB4706.1 are not mentioned in this standard, it means that the corresponding clauses in GB4706.1 are applicable to this standard. The part marked "applicable" in this standard means that the corresponding clauses in GB4706.1 are applicable to this standard. The part marked "replaced" in this standard shall be subject to the provisions of this standard; the part marked "added" in this standard means that in addition to complying with the corresponding clauses in GB4706.1, it must also comply with the clauses added in this standard. This standard is proposed and classified by the Beauty and Other Appliances Sub-Technical Committee of the National Technical Committee for Standardization of Household Electrical Appliances. This standard replaces GB7158-87 from the date of implementation. The drafting units of this standard are: Guangzhou Electric Science Research Institute of the Ministry of Machinery Industry, Guangzhou Huanghua Electronic Appliance Co., Ltd., Nanjing Huaxia Electric Appliance Factory, Shanghai Electric Soldering Iron Co., Ltd., and Shanghai Pudong Electric Tools Factory. The drafters of this standard are: Huang Wenxiu, Fang Simin, Chen Rongjian, Zhao Fulong, Wu Chengxi, and Zuo Mingfang. This standard is entrusted to the Beauty and Other Appliances Sub-Technical Committee of the National Technical Committee for Standardization of Household Electrical Appliances for interpretation. GB 4706.411998
IEC Foreword
1) IFC (International Electrotechnical Commission) is a worldwide standardization organization composed of national electrotechnical committees (IEC National Committees). The purpose of TEC is to promote international cooperation on issues related to standardization in the electrical and electronic fields. To this end, in addition to other activities, IEC also publishes international standards. Member national committees of IEC can participate in the formulation of the standards to be formulated as long as they are interested in them. International, governmental and non-governmental organizations in liaison with the IFC may also participate in the work of developing standards. The IEC and the World Organization for Standardization (ISO) work closely under the terms of the Agreement on Joint Ventures. 2) Formal decisions or agreements of the IEC on technical issues, drawn up by technical committees in which all national committees with a particular interest participate, express, as far as possible, international consensus on the issues involved. 3) These formal decisions or agreements are published in the form of standards, technical reports or guidelines and recommended for international use and accepted by the national committees in this sense.
4) In order to promote international unification, the IEC national committees should clearly and to the greatest extent possible translate IEC international standards into national or regional standards. Any differences between TEC standards and corresponding national or regional standards should be clearly indicated in the national or regional standards.
5) The IEC has not established any procedures for the recognition of marks. The IEC is not responsible for any claim that a device conforms to an IEC standard.
6) Attention should be paid to the fact that some elements of this international standard may be the subject of patent rights. IEC shall not be held responsible for identifying any or all such proprietary rights. This part of IEC 335 was prepared by IEC TC 61: Safety of household and similar electrical appliances. It forms the first edition of IEC 335-2-45 and replaces the 1986 edition and its amendments. The text of this standard is based on the following documents: Final Draft International Standard
61/950/Final Draft International Standard
Voting Report
61/1011/RVD
For details of the voting process for this standard, see the voting reports listed in the table above. This standard is used in conjunction with the latest edition of IEC 335-1 and its amendments. It is based on the 1991 edition of IEC 335-1. This standard supplements or amends the corresponding clauses of IEC 335-1 to transform it into IEC standard 335-1: Safety requirements for portable electric heating appliances and similar appliances.
Any clause in Part I that is not specifically mentioned in Part II shall be adopted as long as it is reasonable. When "addition", "modification" or "replacement" is written in this standard, the relevant content in Part I shall be modified accordingly. Note:
1 The following fonts are used:
-Requirements: Roman font
Test specifications: Italic font
-Notes, Xiaoying Ma Yu font
The text printed in Xi font is defined in Chapter 2. If a definition in Part I involves a morpheme, the morpheme shall be The adjectives and related nouns are also used in the question body. The clauses added to the part are numbered from 101. The following differences exist in some countries:
--2.2.9: In the United States, the conditions suitable for normal operation of welding guns and plastic cutting tools are different. GB4706.411998
-6.1: For this purpose, Class 0I appliances are allowed; if the rated voltage does not exceed 150V, Class 0 appliances are allowed-6.1: In Poland, Class 0 welding iron is allowed if the rated input power does not exceed 18W. 6. 1: In the United States, Class 1 corner-removing tools are permitted; Class 0 appliances are permitted if the rated voltage does not exceed 150 V and they are intended for indoor use only.
—11.7: In the United States, the lighter test is different. —11.8: In the United States, the modification is not applicable
21.101: In the United States, the drop test is different. .-—24.1.3: In Canada and the United States, the non-relevant test is operated 6000 times. 25.7: In the United States, a lighter cord is permitted, —-25.7: In Canada, the modification is not applicable. ——25.8: In the United States, a shorter power cord is permitted for Class II corner-removing tools. National Standard of the People's Republic of China
Safety of household and similar electrical appliances
Particular requirements for portable heating tools and similar appliances1 Scope
This chapter of B1706.1 is replaced by the following: GB 4706. 41 --- 1998
idt 1Ec 335-2-45:1996
Replaces CB7158-87
This standard covers special requirements for portable electric heating appliances and similar appliances. Appliances with a rated voltage not exceeding 250V that are not used for general household purposes but are still dangerous to the public are also within the scope of this standard. For example, appliances used by non-professionals in shops, light industry and farms. Appliances that can still be used when mounted on a bracket are included in the scope of this standard. 1 Appliances within the scope of this standard There are
soldering irons:
desoldering irons:
soldering guns;
conduit welding tools:
thermoplastic conduit welding tools;
household film welding tools
plastic cutting tools,
... grid printing tools;
soldering pens;
wire strippers:
-- glue sprayers:
-- corner removal tools:
-- paint strippers:
-- igniters
hot air guns.
As far as practicable, this standard deals with common hazards arising from appliances that are likely to be encountered by all persons in and around the home. Generally, this standard does not consider
-- appliances used by unattended children or disabled persons; appliances played with by children.
2 Note the following facts:
\· Tools intended for use in vehicles, ships or aircraft may require additional requirements, and tools intended for use in tropical countries may require special requirements. Approved by the State Administration of Quality and Technical Supervision on August 17, 1998 and implemented on September 1, 1999
GB 4706. 41-1998
In many countries, these additional requirements are formulated by their public health departments and labor protection departments. 3 This standard does not apply to the following: - portable electric appliances (IEC745); - portable self-propelled appliances (C1029); - appliances for industrial use only; - appliances used in special environments, for example, where there are corrosive and explosive gases (dust, steam or combustible gases); - high-frequency heating tools: - Fengding welding equipment. 2 Definitions: This chapter of GB 4706.1 is applicable except for the following contents. 2.2.9 This clause is replaced by the following:
Normal operationnormaloperarinn
Normal operation means the operation of the appliance under the following conditions: Unless otherwise specified, appliances with brackets operate in the brackets. Unless otherwise specified, other appliances operate in accordance with the instructions for use. Welding and plastic cutting tools equipped with automatic reset circuit breakers: perform cyclic operation in accordance with the instructions for use, but these appliances are connected for at least 12 hours and the off time does not exceed 188 hours. For two combs, the on time must ensure that the temperature outside the nozzle reaches at least 300°C at the end of the first on time:
Household film welding appliances: perform cyclic operation in accordance with the instructions for use, but these appliances are connected for at least the time required to weld two plastic films together, and the off time does not exceed 2 minutes. The plastic film is made of high-pressure (low-density) polyethylene, and the thickness of each film is 50 m
Hot air gun: Works when the hot air flow remains horizontal. The work performed by the igniter to ignite the charcoal placed in a tray with a diameter of 600mm and an edge height of 50mm. The diameter of the charcoal pile is 500mm and the center height is 100mm
The work performed when the contact igniter is placed so that the heating element is horizontal and inserted into the center of the charcoal. Hot air igniter: Work performed when the hot air flow is placed at a horizontal angle or downward to the maximum angle allowed by its structure, but not exceeding 45\, whichever is more unfavorable. The following clauses are added to this chapter:
2.101 Soldering iron soldering iron m
An appliance with a nozzle that also heats the heating element, 2.102 Desoldering iron desoldering iron An appliance used to melt and remove solder.
2, 103 Soldering gun soldercring 2.104 Conduit-joining tool Conduit-snap welding tool A device used to join metal conduits by means of solder. 2.105 Household film welding appliance A device used for welding or cutting thin thermoplastics by clamping them between electrically heated parts. 2.106 Bratting toes A device used to mark horns, leather or other materials with a heated metal mold. 2.107 Buring-in tool A device used to score wood, leather or other materials with a heated coal. 2.108 Dehurming tool A device used to burn off horn buds.
2.109 Heat gun Heat gun gun
Apparatus producing hot air (jets,
GB 4706, 41-1998
Note: Hot air can be used to melt materials or decompose paint or plastics. 2.110 Paint stripper Iaint stripper An apparatus for softening paint by heat.
Note, a paint stripper may have a scraper 2.111 Jire lighter
An apparatus for igniting solid fuels such as charcoal or wood. 2.112 Canact fire lighter An igniter equipped with a heating element that is in direct contact with the fuel. 2.113 Hot-air fire lighter A lighter equipped with a fan to blow hot air onto a heated non-aqueous fuel 2.114 Thermoplastic conduit welding 1. An appliance for welding a conduit by partially melting the thermoplastic material of a separate accessory, the separate accessory having a heating wire formed integrally therewith and used only once.
2.115 Biased-off switch A switch which automatically returns to the "off position" when the actuating element is released. 3 General requirements
This clause in GB4706.1 is applicable.
4 General instructions for testing
This clause in GH1706.1 is applicable except for the following. 4.2 This clause adds the following content:
For the test of clause 21.102, an additional contact ignition test specimen is required. 5 Rated value
To be determined.
6 Classification
Except for the following contents, this chapter in GB4706.1 applies: 6.1 This clause is modified with the following contents:
Cut corners with tools should be fire or ear tools,
other tools should be Class 1, Class I or Class II tools, 6.2 This clause adds the following contents:
The rated value of the transformer used for the cut corner tools and the cut corner tools of Class II should be at least 1. Joint welding tools Thermoplastic conduit welding tools Water protection should be at least IPX4 Outdoor hand-held paint removers Water protection should be at least IPX4. Unless the instructions for use require them, they must not be stored or placed outdoors, in which case they can be X7 Markings and instructions
(This chapter in GB4706.1 is applicable except for the following content. 7.1 This clause is supplemented with the following content:
GB 4706.41-- 1998
Contact lighters should be marked with the maximum depth of insertion into the fuel. Contact lighters below IPX4 should be marked: Do not expose to rain or moisture. Thermoplastic conduit welding tools should be marked with the type of discrete accessories used with them and the corresponding given values. Each discrete accessory should be marked with the type of appliance used with it and its own model standard. 7.12 This clause adds the following content;
The instructions for use of an appliance with a separate stand and not equipped with an automatic reset circuit breaker should include the following warning: This tool must be placed on its stand when not in use. The instructions for use of sub-category de-angle tools should include the following warning: Warning - Only use the transformer provided with the appliance. The instructions for use of heat guns and hand-held paint strippers should include the following: The appliance may cause a fire if not used carelessly; be careful when using the appliance in the presence of flammable materials. Do not use this appliance in the same place for a long time: - Do not Use this device in an explosive environment: Heat may be transferred to flammable materials at a distance! After use, place the wooden device on a stand to cool it down before storing it; be sure to keep an eye on the device during use.
The instructions for use of the lighter should include the following: Ensure that the lighter is correctly positioned
- Unplug the lighter before removing it from the fire and allow it to cool down before storing it:
- Do not allow the hot parts of the lighter to touch the soft wire or other flammable materials. The instructions for use of thermoplastic conduit welding tools should include the following: Do not use a separate accessory to repeat the welding operation, so as to avoid causing live parts to become easily accessible. 8 Protection against electric shock
This chapter in GB4706.1 is applicable except for the following contents. 8.1.4 The following content is added to this clause:
In thermoplastic conduit welding tools, parts operating at a safety extra-low voltage exceeding 12V are also considered to be live parts. 9 Starting of electric appliances
GB This clause in GB 4706.1 is not applicable. 10 Input power and current
This clause in GB 1706.1 is applicable.
11 Heating
This clause in GB4706.1 is applicable except for the following contents. 11.2 This clause is modified with the following contents: When testing tools, keep away from the wall panels of the test corner. 11.4 This clause is added with the following contents:
Welding guns and other tools powered by transformers are operated at a voltage equal to 1.06 times the rated voltage. 11.7 This clause is added with the following contents:
GB 4706. 41-1998
Contact ignition machine is operated for 30 min, hot air ignition machine is operated for 10 min, other appliances are positive when they work until they reach a stable state. 11.8 This clause is modified with the following content: The temperature rise provisions for pure mica and tightly sintered ceramic materials in Table 3 are changed from 400K to 600K. 12 Appliances with heating elements working under overload conditions are to be determined.
13 Leakage current and electrical strength at working temperature This chapter in GB 4706.1 is applicable except for the following content. 13.1 This clause is added with the following content:
Appliances powered by transformers are tested as electric appliances. 14 Suppression of radio and television interference
To be determined. www.bzxz.net
15 Waterproofing
This chapter in GB 4706.1 is applicable.
The following clauses are added to this chapter:
15.101 For household film welders with suction devices, their structure shall ensure that the suction of liquid does not damage the electrical insulation. Note: This requirement does not apply to parts that operate under safe low voltage. Compliance with the requirements shall be checked by the following test: 40mL.Water containing approximately 1 g of NaCl is poured into a plastic bag. The plastic bag is placed so that the surface of the water in the bag is flush with the suction opening of the appliance. The bag is then welded with the appliance while the suction device of the appliance is in operation. After the test, the appliance shall be subjected to the electrical strength test specified in 16.3 and visually inspected to confirm that there are no traces of water on the insulation that could cause creepage distances and electrical clearances to be reduced to values less than those specified in 29.1. 16 Leakage current and electrical strength
This clause in GB 4706.1 is applicable except as follows. 16.1 This clause is supplemented by the following:
Apparatus supplied by transformers and connected to electric appliances and tested. 17 Overload protection of transformers and associated circuits This clause in CB 1706.1 is applicable except as follows. This chapter is modified with the following content:
For welding guns and other devices whose secondary circuit of transformers consists of heating elements, this test is not required. 18 Durability
This chapter in GB 4706.1 is not applicable.
19 Abnormal operation
This chapter in GB 4706.1 is applicable except for the following content. 19.1 This clause is added with the following content:
For hot air guns and hot air lighters, the test of clause 19.101 shall also be passed to check whether they meet the requirements. 19.2 This clause is replaced by the following:
GB 4706. 411998
The appliance is operated under the conditions specified in Chapter 11. The appliance is supplied with 0.91 times the rated voltage, but the secondary circuit of the transformer is a heating element. The appliance is operated continuously for 30 min. Unless these appliances are equipped with an automatic reset circuit breaker, in which case they are operated for 5 min. The igniter is operated for 2 h without fuel. The scraper with a formed body is held horizontally in the igniter over the entire length of the handle. Apply a force of 70> to the edge of the scraper in the direction of normal use. 19.3 This clause is replaced by the following:
Repeat the test of Clause 19.2: Supply the appliance with 1.06 times the rated voltage. 19.4 This clause is supplemented with the following:
Thermoplastic welding tools are operated in the fastest welding sequence possible. This clause is supplemented with the following clause:
19.101 The hot air igniter and hot air lighter are operated in accordance with Clause 11 until a steady state is reached. The voltage at the motor terminals is then reduced until the motor runs at a speed just sufficient to prevent the thermal cutout from operating. The power input to the heating element is maintained at 1.15 times the rated input power. The rate of voltage reduction is:
For motors with an operating voltage not exceeding 30 V, 1 V/min; - For motors with an operating voltage exceeding 30 V, 5 V/min. The appliance is then operated until a steady state is reached. It shall not emit sparks or molten metal, and the temperature rise shall not exceed the values specified in 19.13. 20 Stability and mechanical hazards
This chapter in GB4706.1 is applicable except for the following contents. 20.1 This clause adds the following contents:
For hand-held appliances, they shall be placed on their supports for testing. 20.101 Contact igniters shall have sufficient stability. Compliance is checked by the following test: The igniter is placed on a horizontal surface so that the maximum insertion mark specified in 7.1 is aligned with the edge of the surface. The power cord is freely suspended and the length of the cord (including the plug) does not exceed 1m. The appliance should not tilt.
21 Mechanical strength
This chapter in GB4706.1 is applicable except for the following contents. 21.1 This clause adds the following contents:
For hand-held appliances, compliance with the requirements shall also be checked by the test of 21-101. For contact igniters, compliance with the requirements shall also be checked by the test of 21.102. The following clauses are added to this regulation:
21.101 For handheld appliances, the supply cord is cut to a length of 100 mm, measured from the point where the cord or cord sheath enters the appliance.
The appliance is dropped from a height of 1 m onto a hardwood floor with a thickness of 50 m. This test is carried out 5 times, the appliance being arranged so that its main axis is horizontal so that each time a different part of the appliance is struck.
The appliance is then dropped 5 more times, with its main axis vertical and the welding head or other corresponding parts of the appliance facing downwards. After the above tests, the appliance shall not be damaged to such an extent that it does not comply with this standard; its live parts shall not become easily accessible. GB 4706. 41---1998
21.102 The main body of a new contact lighter is clamped securely between two slightly cushioned surfaces: the heating element is in the horizontal plane. Power the lighter with rated voltage. After 3 minutes, hang a 4.5 kg weight on the end of the heating element for 1 minute, remove the weight and allow the heating element to cool. If the heating element has been bent, adjust it back to its original position. After the test, the live parts should not be easily touched and the lighter should be able to withstand the electrical strength test specified in 16.3. 22 Structure
This chapter in GB4706.1 is applicable except for the following content. This chapter adds the following clauses:
22.101 Hand-held appliances intended to be used away from the workshop should have a built-in stand. Note 1: Appliances intended for use in a workshop include: - Pipe welding tool H;
- Tower printing tool:
Corner removal tool 1
- Hot air gun
- Coating stripper
Hand-held appliances intended to be used on a table or similar surface should have a built-in stand or be equipped with a separate stand. NOTE 2 Appliances intended for use on tables or similar surfaces include: soldering iron; desoldering iron: soldering tube; lighter. The above requirements do not apply if the appliance can withstand the tests of clause 11 without a support. Compliance is checked by inspection using the tests of clause 11. 22.102 Desoldering irons shall be equipped with a device to collect the solder. Compliance is checked by inspection. 22.103 Soldering guns shall be equipped with an automatic reset circuit breaker. Compliance is checked by inspection.
22.104 If the appliance has only one opening through which liquid may be sucked in during abnormal use, the opening shall be at least 5 mm in diameter or 20 mm2 in cross-sectional area and at least 3 mm in width. Compliance shall be checked by observation and measurement. 22.105 Thermoplastic conduit welding equipment shall be equipped with a timer that provides a complete disconnection of the welding circuit and the timer shall be reset before the next operation.
Repeated welding operations on the same separate accessory shall be prevented. Compliance shall be checked by observation.
Note: If the appliance must be disconnected from the power supply or separate accessory before reconnection, the reconnection operation may be omitted. 22.106 Thermoplastic conduit welding equipment shall be constructed so that when it is operated without separate accessories, the voltage at the connection terminals is an extra low voltage and does not exceed 24 V.
Compliance shall be checked by measurement.
22.107 For the discrete accessories used in the welding of thermoplastic catheters, their structure shall ensure that they are only accessible when the discrete accessories are placed on the catheter. At least basic insulation shall be provided on the surface. Whether it complies with the requirements shall be checked by observation.
22.108 For the positive category except for [. It shall be provided with a transformer. Whether it complies with the requirements shall be checked by observation.
23 Internal wiring
This chapter in GB A716.1 is applicable.
24 Components
GB 4706.41—1998
This chapter in GB4706.1 is applicable except for the following content: 24.1.3 The following content is added to this clause:
Switches installed in the supporting parts of appliances not intended for household use only operate 50,000 times. 25 Power supply connection and external flexible cord
This chapter in GB 4706.1 is applicable except for the following contents. 25.5 This clause adds the following contents:
Z-type connection is permitted for:
Class II appliances:
-Other appliances, except appliances with polyvinyl chloride sheathed flexible cords whose external metal parts have a temperature rise exceeding 75K. 25.7 This clause adds the following contents:
Light polyvinyl chloride sheathed flexible cords may be used for Class II appliances and other handheld appliances, regardless of the quality of the appliance. For appliances equipped with automatic reset circuit breakers and handheld appliances with a rated input power not exceeding 100W and a weight not exceeding 100g, polyvinyl chloride sheathed flexible cords may be used, regardless of the temperature rise of external metal parts. Note: The power cable is not included in the measurement. Polyethylene sheathed flexible cords are not permitted for thermoplastic conduit welding tools and igniters. 1. The power cord of Class I corner removers should use a neoprene sheath and should not be lighter than a heavy-duty butyl rubber sheathed cord (No. 66 cord of IEC245).
25.8 This article is supplemented with the following content:
The length of the power cord should be at least:
---For lighters. 1.5 m;
-For Class I de-angle tools, 6.
25.15 This clause is modified with the following content: For hand-held tools, the first line in Table 10 is changed to: The weight of the tool
>0. a-~ ]
25.23 This clause adds the following content: The length of the working cord of Class I de-angle tools shall be at least 4 m. 26 Terminals for external conductors
This chapter in GR 4706.1 is applicable.
27 Grounding measures
This chapter in GP4706.1 is applicable except for the following content. 27.2 This clause adds the following content:
GB 4706. 41 1998
Note: Class I soldering irons and Class 1 guns used for soldering electronic equipment can have an equipotential grounding butterfly. The size requirements do not apply to this terminal. 28 Screws and connections
This chapter in GB 4706.1 is applicable
29 Creepage distance, electrical clearance and through insulation distance This chapter in GB 4706.1 is applicable except for the following contents. 29.2.1 This clause adds the following contents:
If mica sheets are used as additional insulation, there should be at least 6 layers of mica sheets and any three layers together can withstand the electrical strength test specified in 76.3 for additional insulation;
If mica sheets are used as reinforced insulation, there should be at least 10 layers of mica sheets and any five layers together can withstand the electrical strength test specified in 16.3 for reinforced insulation.
30 Heat resistance, flame resistance and tracking resistance
This chapter in GB4706.1 is applicable except for the following contents. 30.2 This clause is supplemented with the following:
For contact lighters, 30.2.3 applies. For other appliances, 30.2.2 applies. 31 Rust prevention
This chapter in GB 4706.1 applies.
2 Radiation, toxicity and similar hazards
This chapter in GB 1706.1 applies.
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