GB 4706.8-2003 Safety of household and similar electrical appliances - Particular requirements for electric blankets, heating pads and similar flexible heating appliances
Some standard content:
All technical contents of this part of GB4706 are applicable. GB 4706.8—2003/IEC 60335-2-17:1998 This part is equivalent to GB 4706.8—2003/IEC 60335-2-17:1998 Safety of household and similar electrical appliances Part 1, Safety requirements for heating and similar heating appliances (English version). This part replaces GB 4706.8—2003/IEC 60335-2-17:1998 Safety of household and similar electrical appliances Part 1: General requirements. This part replaces GB 4706.8—2003/IEC 60335-2-17:1998 Safety of household and similar electrical appliances Part 1: General requirements. This part is formed by supplementing and reorganizing B170, 1-1998: (Any clause in B4706.1 that is not mentioned in this part indicates that the relevant clause in B470E.1 applies to this part. The clauses in this part that are marked as "applicable" indicate that the clauses in B4706.1 are applicable to this part. The clauses in this part that are marked as "replaced" shall be subject to the provisions of this part. The clauses in this part that are marked as "added" indicate that in addition to complying with the relevant provisions of B4706.1, the provisions added to this part shall be complied with. For the convenience of use, this part is The following summary modifications have been made to K:07: e) "The first part is replaced by GB4706.1", h) the decimal point is replaced by the comma used as a decimal point", and the following are modified: "This part is technically consistent with GB176521SSB: This part is compatible with K4705.1100%, and K7552-95 is used independently. Part 1 is not suitable for "apparatus used in environments where semi-explosive or explosive gases (such as natural gas, steam or methane) are frequently emitted" and "heating pads", GH1762-1998 especially this content. .-6 Part 2 adds the definition of control equipment, -car part 7.1 adds? Graphic symbol of the complaint sign, blood GB: 7852-1$98 abandons this content. The evil part! .1 In the test, the addition of "will be used with the quality of the cloth: the lazy quality of the material with the heat" 4 content, while G1317652-1998 does not have this content. In the test preparation of 50.102 of this part, add 7 a company network. The appendix of this part is a normative appendix.
This part is the China Light Industry Taiwan Public Proposed. This section is under the jurisdiction of the National Technical Points of Household Appliances Standards Conference. The responsible party for drafting this section is China Household Electrical Appliances Research Institute. The participating drafting units of this section are Caihong Electric Appliance (Group) Co., Ltd., Shanghai Caiyang Electric Heating Co., Ltd., Guizhou Yingzuo Electric Chao Tengmen, Shanghai Xiaodiyang Electric Co., Ltd., Baijia Plastics Equipment Co., Ltd., and Chuanshan Product Quality Supervision and Inspection Institute. Drafters of this section: Mao Shiwan, Zhang Yachen, Li Xingren, Liu Wendong, and Li Benjie. This part was first issued in 1916 and revised for the first time in 1995. This is the second revision. GB 4706.8-2003/EKC 60335-2-17:1996IEC Foreword
1) International Electrotechnical Committee (IEC) Technical Resolutions and Agreements are drawn up by technical committees of all national committees that are interested in the standards. Therefore, they express the international consensus view as faithfully as possible on the issues involved. 2) They are available for international use in a recommended manner and are accepted by national committees. 3) In order to promote international cooperation, the International Electrotechnical Committee hopes that all committees will The core standard is adopted in the national standard as long as the conditions allow. Any differences between the core standard and this standard should be clearly introduced in the reference as far as possible.
4) IE does not establish any certification procedures for the harm of the standard. When a device claims that it conforms to a certain item of the standard, the core does not assume any responsibility for this.
This standard is the signature version of TE65335, which was prepared by the 61st Technical Committee of IE: "Safety of electrical appliances for national and similar use". This standard is based on the following documents:
61/1483/FD1S
￥1/1524/RVI
For the details of the foreign documents adopted in the decision of this standard, see the voting report in the table above. This standard is used together with the latest version of TE605935-1 and its revision. This standard is based on the third edition of C633-1:1501. This standard supplements or amends the corresponding clauses of IE6C35-1 and converts it into IF standard: Safety requirements for electric heating, self-heating pads and similar flexible heating devices. Any clauses in Part I that are not specifically mentioned in this standard shall be adopted as long as they are reasonable. 6. When "addition", "modification" or "replacement" is indicated, the relevant content in Part 1 shall be amended accordingly. Note: The following fonts shall be used:
1. The following requirements shall be used outside the text:
2. The original text shall be in black:
3. Note: Small Roman font:
4. The same applies to the text in Part 2: IEC 6u3351 is compiled from 1U1, and the appendixes AA and HH to this part represent the following differences for some countries:
6. The benefit can be 0 (this is the United States); 1. The minimum breaking rate (Hong Kong): 22.102: In the following types of flexible electric heating parts, thermostats and thermal circuit breakers are not allowed to be stored (Australia and New Zealand): 1. Appendix A: Blankets are made of insulating materials (type I). 1 Standard
(B4/06.82003/1EC6C335-2-171998 Safety of household and similar electrical appliances
Particular requirements for electric heaters, heating pads and similar flexible heating appliances
G10.1-159 This chapter shall apply to the following applicable contents: 40 This part is intended for use with flexible electric heaters such as beds and beds that heat the human body. Their rated output voltage is less than 0V, such as household electric heaters, electric heaters, and the control devices provided with them. As far as practicable, this part covers all appliances and the common hazards they present. This part generally does not specifically consider:
Unattended young children and disabled persons The use of the equipment by the disabled: the lack of equipment in the vehicle is essential.
Juice 1: When we can get sufficient guidance from the owner or guardian, and it can be used safely and safely, it can also be used without supervision. 2: Pay attention to the following facts;
can be used in vehicles, such as aircraft, and additional requirements may be required; the equipment used in tropical areas may need to be arranged. In many cases, these additional requirements are formulated by the Ministry of Public Health, Labor Protection and the US Department of Public Health. Note: This section does not apply to,
intends to use the equipment in the event of a mass or explosive atmosphere (such as gasoline, gasoline or volatile gases, etc.) will not be recorded in the environment Equipment: Rigid bed waist agent: Jinou Cup bed! Medical equipment for the use of personnel (1ECSCSC1235) Animal Mengjun and Yangchuan electric heater only (EC60335-2-71): Heater 2
Pottery and electric steaming beauty + TECH-2-
2 definition
GB706.11995 except for the following content: All applicable months: 2.2.9 The following content should be replaced:
Normal operation nonnalperatinn
Good operation under the following conditions.
Flexible parts are installed with a 2C mouth m thick board, the board should be higher than the ground The rate of the electric heating pad is less than Cm. The electric heating pad is used for the two heating materials again:
The electric heating shield should be effective on the two heating materials but not in summer. The place where the device is placed between the heat shrinkage village materials, the state of the offset plate is small, and the extension can be completely controlled by the heat control of the various parts of the material. In addition to the regulations in the north, the ancient rules, although the material secret should be used for the safety zone city with the same rate of 10cmm
attention, the specific regulations of the material selection have been given in the attachment 2.10.4. The policy is replaced by the reverse rate:
[EC60691-2-75 Medical products in the gas Chen
with 2 parts for medical heating, inductor products, special effects of the selection of electric chicken, GE4706.8--2003/1EC 60335-2-17:1998PIC Heating elementPECheating element is a type of heat-generating resistor with a positive temperature coefficient used for heating. When used within a specific range, the resistor may be non-flexible, and the flexible part includes the heating element, thermostat and all the components. The flexible part may also be detachable. 2.102Electric blanket refers to a heating device that is used on the bed and is flexible and is part of the bedding. 2.103Electric heating ball is designed to be used as an auxiliary heating device for the mother who is lying on the bed. 2.104
An allergic electric blanket is a kind of electric heating blanket that is designed to heat the body of a person lying on the bed without adding other bedding products, and the heating element inside can provide additional heat. 2.107
Electric heating pad
An appliance designed to heat the human body locally, and the measured heating area should not exceed 0.2mm.
maliress
electric heating pad
moisture-proof pad, designed for use with mice. 2.109
cunlrulked appliance
controller
a device for controlling flexible components in various ways, which, under normal operating conditions, senses changes in the temperature of the component and automatically adjusts the average input power accordingly.
left heating element healingclea1
heating conductor, together with the heart of the jumper conductor and any other conductors and insulation materials carried by the chest. 2.11
heated ares
the surface of the flexible component within the use range of the heating element. It also includes the side band outside the weak side band. This training belt before the Beijing retreat raised ten heating element sweep adjacent network health walking green return level can be low heart, community: if the gathering back on the public relative heating number of your room is not higher than the space between the swimming heat element Kun use adjacent network level treatment walk back level of the original height of the heating surface rent including the heating element loop line relaxation.
GB 47C6.8—2003/IEC 60335-2-17.1996 Note 2 If a heating element is limited to a block of heating, the two merchants use the special light element in the parts where the height does not exceed the station element two relative parts of the walking level of the original distance 1,5 notice, the area between the network as a heating element. 2.112
moisture-proof applianceAn appliance with a compensatory function that can be used in a dehumidifying environment. 2.113
bonded outer shells
A flexible outer shell that is made by bonding or welding together the surfaces of a flexible component. This bonding shell can include composite materials. 2.114
Control device controlunit
Equipment ear flexible parts external can "some pieces of equipment to change or reduce its average shrinkage, the social [: control device can be used as the center of the normal part of the war. 2 If the switch does not have other control components, it is not from the control set 3 overall requirements
GB470%, 1 one: 3% of the negative internal abandonment, channel use 4 general requirements of the test
GB4, except for the following single wear, the average channel use. 4.2 The nuclear kill wear is modified as follows:
Station inspection question is divided into nominal A, T equipment respectively. For equipment containing other components, an additional test piece shall be subjected to the test of 21.10% of 21.111. For other equipment, a test piece with a temperature of 15°C is required to withstand the test of 21.11. If the original hot box material is used to connect the two open parts, the sample with a minimum length of 150 mm must be subjected to a risk reduction of 0.102.
For moisture-proof types that are subjected to the test of 2°, 110°C, a heat pad shall be provided, with the equipment and the outer material of 1\. 1 For the test of 15, 11°C, an additional test piece may be required. 2; 3.1 The test may require a heat shield. Note 3 that the equipment needs to be more flexible before the adjustment of 10.11°C. After the internal test, the conditions for approval of the products of the Jinan Public Products 21.1U2 to 2.17 are as follows. Note 1 The test of electric heating is the same as that of the double seven chicken method above. 4.3 This clause is replaced by the following content:
The order of the tests is as follows:
The test equipment A is changed from 7, 22.11.8, 22.1.3, Ju, [1.107, 2:, 102 penalty 21.1c7, 22.103, 13, 15.5, 17, 29, 25.15, 25.16, 19, 21.1c, .1, 5, 31 and 32 test equipment HB: subject to: 10, 11 (other public), 21.21.101, 22 remaining parts, 232, 351 parts), 26, 27.2929 tests
For washable appliances, the parts should be fully washed according to the manufacturer's instructions and requirements. If the appliance does not have a meter to record the test, this test can be omitted. 4.5 This clause adds the following content:
If there is a certain external rate on the flexible part of the appliance, the test can be carried out with the vehicle or without other single conditions. If the test is carried out in a specified manner, the electric heating element can be removed from the heating element for testing. If the heating element is moved in a specified manner, the heating element must be moved alone for testing: GB 4706.8-2003/IEC 60335-2-17:19984.6 This clause adds the following:
For appliances with heating elements and self-flow tests, the influence of depolarization on the serviceability of the appliance shall be considered. 4.7 This clause adds the following:
For the tests of the redundant components with heating elements in Chapters 10, 11 and 19, the tests shall be carried out at the most unfavorable ambient temperature within the range of 0℃-25℃.
For other controlled heating and electric drying pads, when the tests in Chapters 11, 11 and 19 are carried out, the ambient temperature shall be maintained at the most unfavorable temperature within the range of 15℃-15℃: 4.1 This clause adds the following: www.bzxz.net
Appliances using only direct current may be tested with branch current. 4.2 This clause adds the following:
The control appliance shall be provided in accordance with the provisions for electric appliances. Approval: The equipment with FTC heating element is approved by the following procedures. 5. Classification: GB471-8 is applicable to the following items: 6.1 The following changes are made to the content of this clause: Class II or Class II heating equipment: The rated voltage of the heating equipment is not more than 4V. 7. Marking and instructions: Gn470G, 1998, except for the above items, are applicable. 7.1 The following changes are made to the content of this clause: The equipment should be marked with the rated input power. This clause adds a statement: The flexible belt and the external components shall be marked with the name of the manufacturer or authorized distributor, and the trademark or mark on the external marking may be removed! English: The model and specification of the appliance with a removable control device shall be marked with the relevant information of the control device used with it. The flexible part of the appliance with a removable transformer shall be marked with the relevant information of the variable length used with it. The flexible part and the removable cover shall be marked with the following instructions: Read the instructions carefully.
Note 1: The 6 generations of the record can be seen by
Do not fold and use: Electric heating data can not be changed to carbon heating elements (do not use it) please do not trust: For electric heating, with a dedicated heat element design, do not operate the standard equipment. Do not add people's orders:
Note to read the relevant code 10-use the blue type electric heating color under the huge heat energy:
Do not use when running (moisture-proof type equipment is not suitable for people who cannot take care of themselves in rainy days, or people who are not sensitive to heat: use it for too long at high power settings will cause skin burns (the electric heating needs to be adjusted after more than 1 time for the power outage to be effective). ||tt| |Note 3 For electric heating engines with a ancestral certification, "the combination of the device and the oxygen-resistant components shall be marked with appropriate numbers according to the specific specifications of 1S03753. Removable control devices shall be marked with reference numbers, or other identification numbers. 4
Components of this type of structure shall not be marked with rated voltages. 7.12 The following content should be added:
The instructions for use shall include the following content:
Always keep in mind
The instructions for use shall include the content of the tax instructions required by 7.1. If the decommissioning symbol is not released, the virtual production rate shall be part of the rate,
CB 4706.8—2003/[EC 60335-2-17,1998 In addition to the "reported heat sensation of 11.2 greater than the wrinkle resistance of 22.106", the instructions for use of the electric heating pad for bunks should include a warning that the device should not be used in a safe manner.1. When people are sleeping, please note: The power can be automatically cut off within the initial power-on. However, the instruction manual of the appliance should state that the appliance can only be used with a detachable speed controller or a detachable transformer, and the type marked above must be consistent. Instructions for use of electric heating devices: The instruction manual should state that if the fuse has blown, it must be returned to the manufacturer or its dealer. The instruction manual should include the following: When in doubt: Do not turn the dial to avoid damage (only for electric heating pads and electric heating pads): Check the device frequently to see if there are any signs of adjustment or damage. If there are any signs, it may be caused by the device being used incorrectly. It should be returned to the supplier before the next inspection. The device is not intended to be used in hospitals.
Electric blanket instruction manual includes the following:
- Do not use on a cot. If the electric blanket is folded or stuck, this electric blanket should not be used by children alone, unless the parents or guardians have adjusted it in advance, or have explained to the children the appropriate method of use.
7.14 The height of the flexible part of the vehicle body should be at least 2.5m, and the height of the vehicle body should be at least 6m. The following modifications should be made:
Use liquid to clean the vehicle instead of wiping it with a cleanser: For protection against touching live parts, the protection mark B on the outer cover of the vehicle body is applicable.
GB1735.1-1098 and this standard are applicable. 9 Starting of electric appliances
This chapter of GB3473.1-195: All contents are applicable. 10 Input power and terminals
This chapter of GB4706.11S98, except for the following contents, is applicable to GB 4706.8-200.3/[RC: 60335-2-17:19910.1 This clause adds the following content:
The negative example difference increases to pulp,
10.101 The input power of the device with PTC heating element shall be significantly reduced when the quality increases, and the following test shall be carried out: The device is powered by a specified voltage and is allowed to work in the specified state. The power consumption shall be at least the minimum value. All control devices that may be operated during the process shall be made not to work. 11 Heating
This chapter of GB406.1-1998 is applicable except for the following content. 11.2 The following changes are made in this clause:
The device is not close to the test angle.
Hold the control device in the dry city and the soft load is almost recorded in a static state, the giant element is tested, and its low control & write is placed on a supporting floor.
The system adds the following content:
For the heating element of Ding hot quilt · [door C, all should be folded for testing. This folding should be set as a single shift folding across the entire width of this electric heating respect. The folding bamboo is about one-quarter of the length of the commercial fire. The light control device should be set to the light and large pull stomach used by the night fast
11 .3 The following contents shall be added:
Thermoelectric components with a certain resistance of heating element are connected with a heating element on a wire, and the distance between the point of connection and the temperature sensing point is at least 10am. The thermocouple used to measure the surface source of heat potential is welded to a 65mm6=Tm, and the effective position of the weak piece is .5m: the effective position of the weak piece is arranged in an antiparallel direction of the wire and can contain the maximum number of heating elements, and the shortest distance is at least S· positions on each outer surface of the non-flexible part. 11.4 The following contents shall be added:
For controllers and appliances with similar structural multipliers, the test objects shall be tested at 0, 3 times to 1.5 times the rated voltage.
11. The following internal symbols are used:
Let the device work until the specified state:
11.8 The following contents are added:
For the whole system, the minimum value shown in 1 should be checked. Table 101
Measure the high temperature of the heating blanket and the electric heating element. Before the second action of the controller, the electric heating element must be in the specified state. The allowable temperature limit is 11V. If the controller is in the low efficiency mode, the humidity is 35. For other devices, the temperature of the actual components shall not exceed the value shown in Table 102. 6
Heat source
Giant heat pad surface
Table 102 Maximum temperature rise
GB 4706.8—2003/IBL 60335-2-17.1998
2 The above performance position is based on the normal ambient temperature of the product, and taking into account the allowable ambient temperature during the test period, note that the heating element of the heat pad is not wrapped in a flexible material, then the specified degree or plastic sheath is also selected in it,
11.101 It should ensure that the heat problem and the electric heating body will not cause the user to have the risk of thermal shock when in use: it is qualified and has passed the following test. The appliance works under normal working conditions: according to the provisions of 11.4, the ambient temperature is maintained at the most unfavorable temperature within the range of U~15°C, and all control devices and soft wire switches are at the lowest position that makes the heating element pass.
After reaching a stable state, but at least 1 h after the appliance is powered on, measure the surface temperature on the heating surface of the flexible component, this measurement is carried out through the grid arrangement shown in 124. The width of the grid is 3n0mnt, and the length of any heating element trace must not be less than 30u. The grid and the flexible component are placed together so that the non-line of the grid is perpendicular to the trace of the heating element. For upper type electric heating: this applies to the bottom of the soft parts. For lower type electric heating and core heating mattresses, the relative humidity should not exceed 7°C. Note: If the heating element is designed in a temperature range similar to that of the purchased material, the quality limits specified in the quality standards shall also apply. The required discharge current and electrical strength at working temperature shall be 7F, except for the following conditions 1-19. 13.1 The following changes are made to this specification:
The rated voltage of 0.5 V is applied to the entire appliance and the following additions are made:
For electric heating pads, a metal box approximately (.1 mm) thick and large enough to cover the portion of the pad with current-carrying parts is inserted between the base and the insulation. For other appliances, two similar metal boxes are used, one above the conductive parts and the other below. These metal boxes are electrically connected together. The load to be evenly distributed on the heating layer shall be g.
Figure 105.
13.2 This clause shall be amended as follows:
For flexible parts, the discharge voltage shall also be measured between any pole of the power supply. In addition to the specified values, the discharge voltage of flexible parts shall not exceed: For electric heating barriers: 3.mA1
: For electric heating elements and electric heating pads: 1mA/m2, the maximum heating area shall not exceed 2.5mA. 3.2 This clause shall be amended as follows:
For flexible parts, the test voltage shall be applied between the live parts and the metal foil, 14.
G3 4706.8—2003/1KC 69335-2-17:199 15 Moisture Resistance
G3706!199 in accordance with the following content, are applicable. 15.1 This article measures: lamp: also content:
special soft parts, in order to pass, press the reverse inspection to determine the small change of the towel will be connected to the power supply, -01 heat single heat test: welcome to read the type need to carry out 15.1 dynamic 15.102 test, package is provided to 21.19 know 2.110 for the watt test of the self-obtained pad does not need to carry out 1:182 test, for electric heating pad to reach 15.103 Note 1: During the test, as long as the equipment is in the oil-free state or in the oil-free state, the flexible parts of the equipment are not required to be tested. 15.3 This clause also adds the following content: Flexible parts do not need to be tested. 15.01 The flexible parts should be washed in water containing about 1:35 water medium after removing the detachable parts. Except for the equipment with many ports, all the ports should be designed without any resistance, unless they are resistant to the source. No entry point is required.1. The internal wiring of the heating element and the conductor are not damaged. However, all parts should be completely changed. After the special test of 16, the water-proof device can reduce the distance between the heart and the phase to the minimum value specified in Chapter 2.
2, after 1.1 test, do not perform this test
15.102 in the outer layer of the permanent outer: then put the outer oxygen 2 into the hot water, and allow the salt solution to enter the inner part of the outer room by itself
1, avoid the electrical strength test of 16.3: the electric bed is 1350V. The water infiltration of the flexible parts is not more than enough to make the braid wave touch the heating element and other current-carrying parts.
15.1C3 Place the electric heat rated bakelite board on which the surface area is 1T/m2 and contains 1>6NsCl2 water. Keep it on the board at a rate of 1[.nin.] uniformly and continuously.
soak the pad for 30i
16 Note: The running electric strength
(./7) is 3.1-18%: Except for the following items, all are applicable. 1E.2 This clause adds the following content:
When testing the flexible parts of electric blankets and electric heating pads, apply voltage between the live parts and the one electrode of the heating pad. The leakage current of the electric heating parts should not exceed:
For electric heating pads: 1mA;
For electric blankets and electric heating pads: 16mA; 3 This clause makes the following changes:
When testing the flexible parts of electric blankets and electric heating pads, apply voltage between the live parts and the one electrode of the heating pad. If the test is carried out before the 1st time, the flexible parts must be held in place. The following content of the rubber bearing training:
After the test, place the flexible parts of the specific heat question and the heat pad in the indicating water and wash them quickly: then the degree between the east heart--4 deaths → ten Huan cars less 2. During the drying period, Jin only tried his best to create its original size and avoid the following price method to rinse and study! The upper installation room is 51.m long and the amount of moisture is wrapped on the surface, then use GR 4705.8-2003/IEC 60335-2-17,1998 fast sea comprehensive fall, and absorb as much water as possible. Repeat the upward treatment once. Finally, use a piece of city business to replace the electric heating according to science 17 transformer and related circuit overload protection GB4716-1999% of the grass inside the wear. The piece is suitable for the month, 18 durability
GB4706.2 1998 of the single inside abandon, this standard month 19 rely on normal work
G81706.: 19R children's chapter except the following content. All are used during the day. 19.1 The content of this clause is modified as follows:
Unless otherwise specified, the following conditions apply: Except for wrinkle-resistant and heat-resistant types, all electric heaters are subjected to the tests of 19.101 to 15.123 and 1?,1C7. For miniature electric heaters, they must withstand the tests of 19,1C1.19.105 and 19.107: Heat-resistant heaters must also withstand the tests of 3.101, 19.106 and 19.107. Heat-resistant pads must also withstand the tests of 19.10419.107. Equipment equipped with heat-resistant circuit breakers or pre-set thin parts that will disconnect must also withstand the test of 19.108. Note: 12.10 refers to the limit of 19.107. New devices installed in the circuit do not need to be subjected to the tests of 15.12. For circuits with the same voltage, they are also subject to the tests of 19.11 and 19.12. Unless otherwise specified, the supply voltage is: For control equipment: 0.S to 1.1 rated voltage, for other equipment: for input voltage up to 1005 times, for other equipment: voltage at rated input rate up to 1005 times, for other equipment: voltage at rated input rate up to 1005 times, for other equipment: 19.13 This clause adds the following restrictions:
Note: Before turning on 15.101, the temperature of the components connected to the isolation layer shall not exceed 105°C. For control equipment, the temperature of the components connected to the isolation layer shall not exceed 100°C. For other equipment, the temperature shall not exceed [50K]. After the non-operating state test, Otherwise, the temperature change of the controller and heating element shall not exceed 162%, and the temperature bottom shall not exceed 145K.
19.101 "Except for the type electric heater, the electric heater equipped with the controller or the heat pump shall work normally! In addition, the flexible structure shall be as shown in Figure 0, folded into three layers with a width of 40m and a length of 401m, and the most unfavorable terrain shall be placed. The folding direction is perpendicular to the direction of the heating element wiring and the two ends are separated correctly. The size of the heat sink is Ccr1x450mm×35mm Materials, so the new stacked electric heating load flash position. In addition to the resistant blanket type heat sugar. All the lower clamp type electric heating questions, the design should be fully covered with electric light according to the provisions of the market working state.
19,102 level wrinkle resistant heat considerations, the lower test type electric blanket in the normal working state, this flexible component should be stacked in an unfavorable position into five, m wide, long, folded light hair element vertically and separate the size of 300mmX450mm×90mm in the net book into a body shape on the stacked electric heating to do. New The stacking inspection degree is based on the most unfavorable result. Then put the quality of the average and the subsection into the work box of the two heating materials. Note: The material can be compared with the upper limit of the medium voltage power supply of the heating device specified in 19.1: 19, 103 above the benefit type in the normal working state, in addition, the flexible part should be in the open space without five layers, width and length mm, fold carefully and the electric heating part main line between the fan-shaped rise. Put a 300mm into 1mm into mm heat-resistant material on the most unfavorable use of the folded electric heating: G0 4706.a—2003/1EC 60335-2-17:199B The test is conducted with the flexible part covered or not covered, whichever is more unfavorable. 19.104 The thermostat installed in the circuit of the electric heating pad and the electric heating pad must only be operated under the working conditions. In addition, the heating material is only one-third of the flexible part: this test is carried out eight times, and the boundary chord of the area shown in Figure 107 is parallel to each side and the corner of the flexible part. 19.105 Resistant type electric heating pad Work under normal working conditions. In addition, the flexible part is folded into two layers in the most unfavorable position, and the thermal material of 3mm×4s0m×mm is placed on the most unfavorable position, and then the uniformly distributed material is placed on the thermal pad. 19.106 The electric heating pad is operated under normal working conditions, and at the same time: its flexible part is folded into two layers, the folding chain is parallel to one side of the flexible part, and the position and width of the folding lithium are selected at the most unfavorable position. The upper surface of the flexible part is not careful, or part of the thermal material is used to monitor the most unfavorable way of the two. The length of the thermal material is 36 mm, and its length is equal to the length of one side parallel to the folding chain, and the width is equal to one-third of the length of the adjacent side. The position where it is placed should cover the flexible part in the folding direction, and the flexible part covers any part of it in the horizontal folding direction. Standard: The original position of the heating material is shown in Figure 10. 19.107 The appliance is operated in accordance with the provisions of Clause 11 under normal operating conditions. In parallel with the tests of Clause 11, any limiting components of the appliance are short-circuited. Note: If the appliance is equipped with more than one controller, the controllers shall be omitted in sequence. 19.108 If the acceptance of the tests of 19.101 to 19.1C7 depends on the breaking of a wire or the failure of a pre-determined weak part, the flexible components shall be retested as required. During the test, the protective circuit shall be included in the unfavorable position. The appliance shall also be pressurized to the lower limit of the range specified in 1.1. 19.109 The construction of the electric heating stabilizer and the electric heating pad shall be such that the lower part of the component will not produce a temperature that is dangerous to people. It is qualified according to the test of 11.11, and this requires that all components are positioned in turn according to the way in which the fault occurs, and the switch melting point is not frequent: only one fault condition occurs once. During the test, the degree of degradation of the flexible part surface does not exceed 60%. Design: Heating elements and interconnecting wires 19.110 Appliances with heating elements or internal wiring consisting of multiple strands shall not produce excessive heat during normal use if one or more strands of a heating element or internal wiring are broken. Whether this is reasonable shall be determined by testing or evaluating the protection system according to 19.110.1 to 1%. 113.3 Note: In the event of a change in the protection system, any temperature exceeding 1% mr shall be considered to be a part of the appliance.1. If the internal wiring or the development element is not open, resulting in no electrical insulation between the strands, then the outer shell will be sensitive to opening, so that the internal wiring or the development element of a small section of the car in an unfavorable position to record. Cut off all but one strand and draw a gap of about 15 ram, then close the outer cover and let the appliance work in normal working condition for 1 hour before damage occurs. If it is a single-load installation, increase the number of times to the maximum number of times required to prevent disconnection. After the test, the cover and any material in contact with the wire that has not been disconnected are not small strain burns. 19.110.2 If the internal wiring or heating element has bulk insulation and there is electrical insulation between each strand of the graded wire, the jacket of the flexible part is opened in a good position, so that the internal wire becomes a small section of the heating element. In a small position, a single effective wire of 100 mm long is wound around the insulation of the rated load. The two wires are connected in series with the wire in the test and the outer cover is closed. Then the end is operated in normal working condition for 4 hours. If a single wire breaks before the damage occurs, the test shall be repeated when the number of strands is increased to the minimum number required to break the wire. The conductor pipe or beam components shall not be damaged during the test.
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