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GB 4706.108-2012

Chinese Standard: 'GB 4706.108-2012'
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GB 4706.108-2012English524 Add to Cart Days<=3 Household and similar electrical appliances. Safety. Particular requirements for heated carpets and for heating units for room heating installed under removable floor coverings Valid GB 4706.108-2012
GB 4706.108-2012Chinese34 Add to Cart <=1-day [PDF from Chinese Authority, or Standard Committee, or Publishing House]

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Detail Information of GB 4706.108-2012; GB4706.108-2012
Description (Translated English): Household and similar electrical appliances. Safety. Particular requirements for heated carpets and for heating units for room heating installed under removable floor coverings
Sector / Industry: National Standard
Classification of Chinese Standard: Y63
Classification of International Standard: 97.100.10
Word Count Estimation: 31,384
Quoted Standard: GB 1406; GB/T 1804; GB/T 2423.2; GB/T 2423.8; GB 3667; GB 4208; GB/T 5169.5-1997; GB/T 5169.11; GB/T 5169.12; GB/T 5169.13; GB/T 5169.16; GB/T 7153; GB/T 12113-2003; GB/T 14472-1998; GB/T 16935.1-1997; IEC 60664-1; GB 17465.1; GB 17465.2; GB/T 17626.2; GB
Adopted Standard: IEC 60335-2-106-2007, IDT
Drafting Organization: China Electric Apparatus Research Institute
Administrative Organization: National Standardization Technical Committee appliances
Regulation (derived from): National Standards Bulletin No. 28 of 2012
Proposing organization: China Light Industry Association
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary: This Chinese standard relates to the following security appliances: electric carpets and similar appliances, intended for direct installation in the room removable bottom floor coverings, and secured the heating device for heating the room. Single-phase d


GB 4706.108-2012
Household and similar electrical appliances.Safety.Particular requirements for heated carpets and for heating units for room heating installed under removable floor coverings
ICS 97.100.10
Y63
National Standards of People's Republic of China
Household and similar electrical appliances - Safety
Electric carpet and mounted on a movable floor
Under the covering for heating room
Particular requirements for the heating apparatus
Householdandsimilarelectricalappliances-Safety-
Particularrequirementsforheatedcarpetsandforheating
unitsforroomheatinginstaledunderremovablefloorcoverings
(IEC 60335-2-106:2007, IDT)
Published 2013-09-01 2012-11-05 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China issued
Table of Contents
Introduction Ⅲ
Introduction Ⅳ
1 Scope 1
2 Normative References 1
Terms and definitions 1 3
4 General requirements 2
General conditions for 5 tests 2
6 Category 2
7 Marking and instructions 3
8 Protection against access to live parts 4
9 start electric appliances 4
10 Power input and current 4
11 5 fever
12 Void 6
Leakage current and electric strength at the operating temperature of 6 13
14 Transient overvoltages 6
15 Moisture resistance 7
16 Leakage current and electric strength 7
Overload protection of transformers and associated circuitry 17 7
18 Endurance 7
19 Abnormal operation 9
10 20 Stability and mechanical hazards
10 21 Mechanical strength
Structure 12 22
Internal wiring 13 23
24 element 13
25 and the external power connection cord 13
An external lead terminal 26 with wiring 14
27 for earthing 14
Screws 28 and 14 are connected
Clearances 29, creepage distances and solid insulation 14
30 heat and fire 14
31 rust 16
32 radiation, toxicity and similar hazards 16
Appendix 24
Reference 25
FIG heating means 101 arranged in FIG. 16 Test
FIG test apparatus 102 electric arrangement of Figure 17 is only used on a concrete floor or the like
The flexible member 103 in FIG leakage current and electric strength measuring arrangement 18 of FIG.
Mounting jig 19 of the stylus 104 of FIG.
105 triple folding test arrangement in FIG. 20
Heating element 106 and the internal wiring of the bending test apparatus 21 of FIG.
Spark ignition test apparatus 107 of FIG. 22
FIG detail template 23 108
Table 101 maximum temperature rise 6
Foreword
All technical contents of this section is mandatory.
GB 4706 "and similar household electrical appliances," it consists of several components, Part 1 General Requirements for the other parts of special
Claim.
This section is part of the 108 GB 4706.
This section drafted in accordance with the rules GB/T 1.1-2009 given.
This section is equivalent to using IEC 60335-2-106:2007 "Household and similar electrical appliances - Safety - Part 2-106: electric carpet and
Installation beneath thereof covering the special requirements for the electric heating means for heating the room in the movable floor. "
This section should GB 4706.1-2005: with "safe 1 Household and similar electrical appliances General requirements."
This section is formed by addition or modification of GB 4706.1, stated "applicable" section, showing the corresponding provisions apply GB 4706.1
In this section; stated part, places the provisions of this section "instead of" main; write "Edit" section, corresponding provision represents 4706.1 GB
The content - the contents of this section after the modification, and the other of the provision is still applicable; states "addition" part, showing in addition
To comply with the corresponding provision of GB 4706.1, this section shall comply with the provisions of the increased.
This section following editorial changes made to IEC 60335-2-106:
A) "Part 1" be replaced by "GB 4706.1";
b) with a decimal point "." instead of as the decimal comma "."
GB 4706.1 terms of increased numbered starting from 101.
Consistency correspondence between the international normative documents referenced in this section of the following documents:
--- GB/T 2099.1-2008 plug and socket for household and similar purposes - Part 1: General requirements (IEC 60884-1:2002,
MOD).
This section was proposed by China Light Industry Federation.
This part of the jurisdiction of the National Standardization Technical Committee appliances (SAC/TC46).
This part of the drafting units: China Electric Apparatus Research Institute, Anhui Anze Electrical Co., Ltd., Chengdu Rainbow Electric (Group) Company Limited
Division, Guizhou electropositive warm color Technology Co., Ltd., Jilin Province Product Quality Supervision and Inspection Center, Guangzhou Institute of CVC detection technology.
The main drafters of this section: Xu Yanrong, Cheng Nailiang, Yin Hua, Li Zheng Yong, Liang Xi, Li Guangming, Wang Qiwu, Wei Qiyao.
introduction
It has been assumed in the drafting of this section, a person appropriately qualified and experienced to implement the provisions of this section.
This portion is recognized that the use of household electrical appliances and the like under normal conditions noted when the manufacturer's instructions for the appliance
A dangerous international acceptable level of electrical protection, mechanical, thermal, radiation and fire. It also includes the possible use expected
Abnormal circumstances, and taking into account electromagnetic interference affect the way for the safe operation of the appliance.
In developing the present section has been considered as the requirements of GB 16895 in order that the electrical appliance when connected to the grid
It requires wiring rules harmonization.
If a number of functions involving other appliances special standards GB 4706, and as far as is reasonable in the circumstances, the relevant
Special requirements of the standard to be applied to each function separately. If applicable, taking into account the influence of one function to other functions.
If no additional requirements - Part 2 Part 1 to cover the risk mentioned in Part 1 apply.
Note 1: The meaning here is the focal point responsible for the second part of the standard technical committee has decided: it's the equipment, in addition to general requirements, it is not necessary regulations
special requirements.
This part is a matter of security appliance product family standards, and standards covering at the same level as in the same category and the same subject
In priority.
Note 2: As in the development of IEC 60335 series of standards of general and special requirements of this factor has been considered dangerous, so dangerous and cover the same level
Standard in the same category do not apply. For example: the surface temperature requirements of many appliances, except for Part 1 or Part 2 standard, the same type of
Standards such as ISO 13732-1 standard applicable to hot surfaces do not apply.
An appliance that complies text of this section, when examined and tested, found to have other features that will be covered by the requirements of this damage
And when the level of security, it will not be considered to comply with the safety guidelines in this section.
When the material form and product structures other than specified in this part, then the product is intended to be in accordance with those requirements into
Line inspection and testing. If found to be substantially equivalent, may be sentenced them to comply with the safety principles in this section.
Household and similar electrical appliances - Safety
Electric carpet and mounted on a movable floor
Under the covering for heating room
Particular requirements for the heating apparatus
1 Scope
GB 4706.1 This chapter replaced by the following:
This section deals with the safety of the following appliances:
--- electric carpets and similar appliances;
--- intended for direct installation is movable in the room below the floor covering material, and heating means for heating a room to be used for fixing.
It means a single-phase rated voltage not exceeding 250V, the rated voltage of the other device does not exceed 480V.
101 Note: as the movable floor covering material Examples thereof include: a laminate carpet or vinyl flooring fixed combination.
102 Note: Note the following conditions:
--- In many countries, different wiring rules apply;
--- intended for use on vehicles, vessels or aircraft equipment, additional requirements may be necessary;
--- In many countries, national fire station, building a national planning department, national health authorities, the national labor protection department
And similar authorities specifies additional requirements for appliances.
103 NOTE: This does not apply to:
--- designed specifically for industrial use appliances;
--- appliance intended for use in a corrosive or explosive gases (such as dust, vapor or methane gas) locations where special conditions;
--- blankets, pads and similar flexible heating appliances (GB 4706.8);
--- heating mats warm Foot (GB 4706.80);
--- film heating system permanently bonded together with the floor of a building (GB 4706.82);
--- flexible heating element together with other appliances.
2 Normative references
GB 4706.1 of this chapter except for the following content, are applicable.
increase:
IEC 60884-1:2002 Household and similar plug and socket - Part 1: General Requirements (Plugsandsocket-outletsfor
householdandsimilarpurposes-Part 1: Generalrequirements)
3 Terms and Definitions
GB 4706.1 of this chapter except for the following content, are applicable.
3.1.9 increase:
The resistance heating means mounted in the insulating layer of about 0.1m2 · K/W below, to which current will vary with the length of the electrical heating element
And an electric heating device to other electric power supply apparatus capable of loading devices, an electric current through the device is equal to that indicated on the heating element
current values.
3.101
Heating means heatingunit
Heating elements are connected with the power supply device.
3.102
Modular electric apparatus modularheatingunit
Preform heating means and other components of the material.
3.103
Electrode electrode
Combined with a film with the heating element for heating the material to provide a conductive member connected to the power supply.
3.104
The flexible member flexiblepart
Intended to fully or partially mounted below the floor covering material, the heating element, thermostats and all other current carrying parts together to form a fixture
The layers of permanent coat.
NOTE: This flexible member may be provided with a detachable coat.
3.105
Controlled appliance controledappliance
Temperature sensitive means in the appliance interior flexible member, the apparatus automatically under normal operating conditions varies with temperature regulation mean input
power.
4 General requirements
GB 4706.1 of this chapter apply.
General conditions for 5 tests
GB 4706.1 of this chapter except as follows, are applicable:
5.2 Addition:
The layered electric carpet, a tool for additional subjected to the test of 22.103.
For the heating means subjected to the test for additional two appliances of 18.102. For coating or a printed circuit having electric heating elements mounted
Set, subjected to the test for additional two appliances of 21.102.
After heating for carpet with a wear indicator (such as discoloration), the required fabric layer after removing worn or visible indication of a dedicated sample
21.104 11,13,18,19.2,19.101,21.101,21.102,21.103 and subjected to tests.
101 NOTE: 21.101 and 21.104 tests can be performed on a few additional separate tool.
5.3 Addition:
101 NOTE: 21.101 tests can be performed together with the conditions of 18.102.2.
5.6 Addition:
The indoor or outdoor air temperature sensitive thermostat shorted. However, if the thermostat may be set to non-operation, it is not short-circuited.
101 NOTE: For the electronic controller, the sensing element may be desirable to set the short-circuit does not work in place of the thermostat.
5.10 Addition:
Heating means for tailoring required, the test should be conducted after connecting power leads and instructions required by each edge to protect.
Category 6
GB 4706.1 of this chapter except for the following content, are applicable.
6.1 Addition:
If the classification electrothermal apparatus, the corresponding requirements apply.
6.2 Addition:
Water heating means and the other level of the floor-mounted member is at least IPX7.
Waterproof grade electric carpets and similar appliances should be IPX7.
101 NOTE: This does not apply the power cord plug to the appliance controller or mounted on a wall.
7 Marking and instructions
GB 4706.1 of this chapter except as follows, are applicable:
7.1 Review:
Sign rated input current or rated replaced by the following:
Heating means should be marked at 20 ℃ rated power input and the maximum rated current for the electric heating means may be cut mark length per meter
Rated input power degree.
If the following conditions, the maximum current electric apparatus shall be marked.
--- current may vary according to the length of the heating device;
--- Other electric devices by the electric power supply apparatus.
Appliance shall be marked with a removable controller serial number or other identification to the Controller.
increase:
Heating means shall be marked laying direction, unless they are symmetrical.
0.5m length of each section or each heating element can be cut into a region of electric devices should be repeated at least once flag.
Can be cut to the necessary shearing and heating means at a predetermined position should give the appropriate identification.
Only intended for electric heating means is mounted on a floor of concrete or similar material should be permanently marked following:
To avoid fire, this heating means can only be installed on a concrete floor or the like.
7.12 Addition:
Instructions shall contain the following:
The apparatus for indoor use.
For electric carpet with a wear indicator (e.g., color change), the instructions should be clearly indicated and use may become visible when the indication
When we must take measures.
modify:
It does not require physical decline, sensory impairment or mental retardation, or lack of experience and knowledge of people (including children) to use appliances and utensils children play
The situation will be explained.
7.12.1 increase:
Installation instructions shall include the following:
Description a) mark, if required.
b) heating means mounting details:
● Precautions during installation to avoid damage to be taken;
● should be noted that the size and distance;
● declaration electric apparatus must be separated from other sources of heat;
● described electric device mounting region;
● The guidance should be how to avoid the relative motion of damage to the heating device and its boundary after installation;
● heating apparatus may be installed minimum ambient temperature;
● minimum bending radius of the heating elements, if applicable;
● To avoid the electric heating elements from the crease preventive measures to be taken;
● statement electric apparatus can not be installed on an uneven surface;
● declaration electric apparatus must be installed in the correct orientation, if applicable;
● statement wiring installation must comply with national regulatory requirements;
● It is recommended to install a device on the electric rated residual operating current not exceeding 30mA residual current operated protective device
(RCD);
● how to interconnect electric apparatus, and given cross-sectional area of the wire type, if applicable.
c) when another electric device powered by the electric heating means or when the electric current as the length of the device is changed, allowing
Allowable maximum current flowing through the heating apparatus.
d) list of controllers, including statements: the appliance can only use these controllers as part of the thermal protection system unless the controller is
And heating means assembled together.
101 Note: only necessary to ensure compliance with those listed in the controller necessary for this part.
e) all binder used in the specification.
f) the same level of detail and 7.101 tag is fixed in the vicinity of the power distribution board.
For 7.12.101 heating means may cut, the instructions for use should be noted: To avoid danger, only the intake by the manufacturer or service agent
Line installation work.
7.14 Addition:
Only intended for electric heating means mounted on the floor of concrete or similar material, at least the height of the font flag should be 20mm.
7.15 Addition:
Intended for heating only be installed in concrete or similar device on a floor material, which flag during installation should be visible.
7.101 should provide a label (see 7.12.1f)) to each apparatus, the tag comprising heating means for mounting listed should have
interval:
--- manufacturer or responsible vendor's name, trade mark or identification mark;
--- appliance model or serial number;
--- rated input power.
Label should be given the following:
--- mounting location of heating means;
--- not restrict the floor heat dissipation.
Note: Special purpose be declared on the label.
--- You can not use non-recommended fixed material;
--- not insert nails or screws.
Compliance is checked by inspection.
8 Protection against access to live parts
GB 4706.1 of this chapter apply.
9 start electric appliances
GB 4706.1 of this chapter do not apply.
Power input and current 10
GB 4706.1 of this chapter except for the following content, are applicable.
10.1 increase:
101 Note: This requirement also applies to the rated input power per meter length of the heating element.
10.101 appliance for heating means comprises a PTC heating element with which the input power with an increase in temperature should be significantly
cut back.
Compliance is checked by the following test.
The appliance at rated voltage, and operates in normal operation, when the steady state is established, the input power should be reduced to the initial value
50% less, the operation of the controller may be any short-circuit in the process.
11 fever
GB 4706.1 of this chapter except as follows, are applicable:
11.1 increase:
Tests at ambient temperature is maintained within ± 2 ℃ 20 ℃ for a room.
11.2 Replacement:
Other means intended for electric heating can only be installed in concrete or similar device placed on the floor materials according to the requirements of 11.2.103,
And an electric carpet is mounted above the floor, in accordance 11.2.102 of placing.
If a modular electric apparatus equipped with a separate floor thermostat sensor, the sensor should be installed in adjacent heating device
One above:
--- on the center line, or
--- according to the manufacturer's instructions for each use,
However, the heat insulating material region extending 300mm ± 50mm, at least 300mm and starting from each side of the test bed.
For other electric apparatus provided with a thermostat with a separate floor sensor, the sensor should be installed in:
--- center line heating device, or
--- according to the manufacturer's instructions for each use,
However, the heat insulating material region extending 300mm ± 50mm, at least 300mm and starting from each side of the test bed.
11.2.101 plurality of electrothermal apparatus by the setup instructions, which are arranged in a matrix form, an electric device to be tested in the center
position.
11.2.102 appliance should be positioned as shown in FIG. 101 on the test floor, the thermal resistance of a layer of about 5m2 · K/W insulating material is placed again
Test floor surface below.
At least on the test floor surface should be free space of 1.5m.
The thermal resistance of an approximately 1.25m2 · K/W module of the heat insulating material on the floor, across the intermediate portion of an electric apparatus 101 in FIG.
Fig. Insulating material length 0.8m, width:
--- 0.8m, for electric carpet;
--- equal to the width of the heating means, means for heating.
Note: To measure the maximum temperature rise of the floor, it may be noted with the use of the provisions covering the thinnest material to repeat the test.
11.2.103 intended only be installed in concrete or similar material on the floor heating device 102 according to FIG placed on the floor as shown in the test, the
Resistance of about 2.5m2 · K/W electric insulating material on the following apparatus. Thickness of at least 40mm layer of concrete supporting heat-insulating material
Material, if not pouring concrete, the concrete layer may be made of a size of 500mm × 500mm, thickness of 40mm multilayer concrete slab
Composition, the gap between the plates filled with dry sand.
At least on the test floor surface should be free space of 1.5m.
The thermal resistance of an approximately 1.25m2 · K/W module of the heat insulating material on the floor, across the intermediate portion of an electric apparatus 102 in FIG.
Fig. The length of the heat insulating material was 0.8m, a width equal to the width of the heating apparatus.
11.3 increase:
With a thermocouple to measure the temperature of the carpet simulate thermocouple attached to black to a size of 65mm × 65mm × 0.5mm of
The back surface of copper or brass sheet.
11.4 increase:
Controlled instrument for work in the most unfavorable voltage between 0.94 times and 1.06 times the rated voltage under normal operating conditions.
11.7 Replacement:
The appliance is operated until steady conditions are established.
11.8 increase:
Measuring the temperature rise should be given point table 101, should not exceed a predetermined value. Should be measured at a distance to the insulating material, i.e., from at least the heat insulating module
Each side of the material temperature at each point of 100mm.
Table 101 the maximum temperature rise
Place
Temperature Rise
Layer of insulating material on the surface 0.1m2 · K/W or electric carpet
Wood frame test
22 (60)
60 (60)
Note: values in parentheses in the module with temperature limits of the insulation material.
12 Void
Leakage current and electric strength at the operating temperature of 13
GB 4706.1 of this chapter except for the following content, are applicable.
13.1 increase:
Appliance installed in accordance with the provisions of 11.2.
Take two dimensions sufficient to completely cover the area of heating up a metal foil or a layer of electrically insulating material attached to 0.1m2 · K/W is
Heat the carpet, an instrument is inserted into the following, the two metal foils electrically connected together. The negative uniformly about 35kg/m2 distribution
Contained in the layer of insulating material is placed 0.1m2 · K/W above.
Figure 103 is arranged as shown in FIG.
13.2 increase:
A leakage current between the measuring electrode and the metal foil, a barrier, and the other grounding device to be disconnected in any of the power supply.
Instead of the predetermined value, the leakage current should not exceed 1mA/m2.
101 Note: If the total leakage current value exceeds 10mA, it may require special cabling installation according to national regulations.
102 Note: These leakage currents normally appliances mostly capacitive leakage.
13.3 Review:
The flexible member, the test voltage should be applied between the charging member and the metal foil.
14 transient overvoltage
GB 4706.1 of this chapter apply.
15 Moisture resistance
GB 4706.1 of this chapter except as follows, are applicable:
15.1 increase:
Tested directly on a heating device.
15.1.1 increase:
IPX7 heating means shall be immersed 72h.
16 Leakage current and electric strength
GB 4706.1 of this chapter apply.
Overload protection of transformers and associated circuitry 17
GB 4706.1 of this chapter apply.
18 Endurance
GB 4706.1 This chapter replaced by the following:
18.101 from the power leads and the heating element is connected to the interconnection cord should be reliable.
By 18.101.1 or 18.101.2 (if applicable) test to determine eligibility.
18.101.1 for electric apparatus with a coating or a printed circuit heating element, the heating temperature in the heating apparatus 20 ℃ ± 2 ℃ of
Box, and a supply voltage so that a current equal to the target current value in the heating device, or equal to the rated current value (if applicable), and even each measurement
Then the voltage drop.
NOTE 1: The length of the heating device should be as short as possible, but not less than 0.5m.
Note 2: heating means can not be moved into the tank after the heating.
NOTE 3: If the crimp connector to connect, and should be measured between the connector and the heating element between the supply lead and the connector, the measuring point
As close to the junction.
Heating means for heating cycle, each cycle too IH, by the following processes:
--- 30min, period:
● supplied to the heating means to measure the voltage drop of the applied voltage;
● front 20min, the temperature was raised to the temperature of the heating tank 85 ℃ or heating element during the test measurement Chapter 11,
Whichever is lower;
● After 10min, the temperature of the heating tank is maintained within the above temperature range ± 5K;
--- 20min, during the temperature drop to about 30 deg.] C;
--- stable period of 10min.
Note 4: at least 50mm measured temperature from the heating tank heating means.
Note 5: Forced cooling can.
Test was carried out 400 cycles, and then the temperature of the heating tank is reduced to 20 ℃ ± 2 ℃, and measuring the voltage drop at each connection again.
Voltage drop should not exceed 22.5mV, or 1.5 times for the first measurement value, whichever is less.
After the test, it should not affect its compliance with this standard the extent of damage.
18.101.2 to remove all removable carpet portable heating jacket placed on a 25mm diameter smooth horizontal roller, is driven
After movements or forward. Placing one end of the appliance such that it is suspended vertically above the roller, and the entire length of the other side end is clamped in the driving means
On the opposite, the drive means moving in a horizontal plane.
Over the entire length of the side of a clamp attached to the vertical portion at one end of the appliance, by a method of connecting a weight clamping jig on the end edges
0.5kg or equal to the force applied to the edge connector 3g/mm, whichever is greater.
Travel of the drive means such that the largest possible area should be subjected to bending.
Driving means at a rate of about 125mm/s 1000 work cycles, then 90 ° rotation of the appliance, and then for 1000 cycles.
Note 1: This test was carried out in the case where the same side of the carpet near the roller.
Note 2: a cycle of operation twice, once in each direction.
18.102 electrical resistive material between heating device with a coating or a printed circuit heating element and an electrode connected to be reliable.
Compliance is checked by tests carried out on the two heating devices, the length of each device over 1m.
A heating device is subjected to the test after 18.102.2 18.102.5 subjected to the test, the device is subjected to further heating to 18.102.1
Test of 18.102.5.
After the test, the voltage measured a second heating means during the trial was bent position 18.102.2 drop should not exceed a first electrical
1.5 times the voltage drop measured by means of heat. In addition, the average voltage measured at the other position of the second electric device a first drop should not exceed
1.5 times the average measured voltage drop of a heating apparatus.
Inspection under the electrode should show no damage such as pitting or erosion of the electrodes in contact with accessories like.
1000h durability test in Chapter 11 conditions.
18.102.1 The heating means wound on the mandrel and release, the description of the mandrel is equal to the diameter of a predetermined minimum bend radius installation
Twice. This test was repeated in the other surface of the mandrel facing the electric apparatus.
Test three times.
If the installation instructions indicate that the heating means is wound in only one direction, it is performed 6 tests in this direction.
18.102.2 the heating means sandwiched between two thick part 100mm, a size sufficient to completely cover the heating element Hardboard width in the hard
Each edge of the board rounded with a radius of an arc of 50mm.
This combination is placed in a member or mounting -5 ℃ predetermined minimum ambient temperature environment, whichever is lower. When the heating element of
When this temperature, the free end curved around the arcuate edge of the board, in both directions and then completely bent to 180 [deg.] C to its normal position
Home, this bending operation to be performed three times.
18.102.3 The heating apparatus in a relative humidity of 93% ± 3%, a humidity cabinet 40 ℃ ± 2 ℃, the heating means supplied with a
Rated voltage and its work 1h, then disconnect the power 1h.
1000 cycle test was carried out.
18.102.4 18.101.1 test device is subjected to the glow performs 2000 cycles. Measured voltage drop and damage, but not in
Inspection.
18.102.5 The heating means on a horizontal surface, supplied with the rated voltage. Take a needle in a position 5mm away from the inner electrode to 45 °
The resistance material of the heating element inserted at an angle.
Note 1: Any electrically conductive material and the resistive material between the electrodes are considered to be part of the electrode.
Note 2: the jig 104 is positioned as shown in FIG needle.
Measuring the voltage between the needle electrode is connected to the power source and (Um).
Note 3: allow the electrode itself to compensate the voltage drop.
The voltage drop at the connection point (Delta] U) is given by the formula (1):
ΔU = Um-5Urd
(1)
Where:
Rated voltage UR --- electric device;
--- the distance D between the inner electrode, in mm. If the conductive path is not perpendicular to the electrodes, along the center line to the rail
measuring.
During the test the bent position 18.102.2 measure the voltage drop, is also less than 6 other position measurement voltage drop, and calculating
The average value.
Note 4: the position of the test point may be selected by means of a thermal imaging device.
18.103 electric resistance value of the device in use should not significantly reduced.
Compliance is checked by the following test:
The electric heating means on the inside, the internal temperature should be higher than during the test of clause 11 5K surface heating element in the measured temperature.
After 2h, the heating apparatus of measuring the resistance value, the resistance value is measured again at intervals of not more than 72h, the heating means in the heating cabinet
Too 3000h. During the test, the resistance value of an electrothermal reduction apparatus should not exceed 5% of the value measured for the first time after 2h.
19 Abnormal operation
GB 4706.1 of this chapter except as follows, are applicable:
19.1 Addition:
Portable electric carpet should be subjected to the test of 19.101.
During the test with 19.101 appliance short circuit will cause the fuse or weak preset member should be subjected to damage 19.102
Test.
101 Note: In order to meet the requirements of 19.101 and 19.102 assembled including the fuse need not be subjected to the test of 19.12.
modify:
Unless otherwise specified, the supply voltage appliances should be:
--- control-type appliances: between 0.9 times and 1.1 times the rated voltage;
--- other instruments: the input power is equal to 0.85 times and 1.24 times the rated input voltage between the power.
19.2 increase:
The thermal resistance of the module on the floor insulation materials increased to approximately 2.9m2 · K/W, and placed in the most unfavorable position.
19.6 does not apply.
19.13 Addition:
Increased Table 9:
part
Temperature Rise
On the insulating material layer beneath the insulating material block, 0.1m2 · K/W surface or heating
On the surface of the carpet
Wood frame test
19.101 Yaoan FIG portable heating carpet, in the most unfavorable 40mm wide folded into place 105, 400mm long three, and
Separated into fan-shaped at both ends. 3.1.9 as the one defined by a size of 300mm × 450mm × 36mm upper heat insulating material
Most unfavorable position on the electric folding apparatus.
The temperature rise of the flexible member in contact with the insulation material should not exceed 130K; for the controlled appliance and other appliances, which should not exceed the temperature rise
Over 130K.
19.102 19.101 If the test is passed or not depends on a weak part of the pre-fuse or damaged, according to the provisions of
A flexible member disposed on repeated tests, when the maximum impedance point To test protection circuit contained in the most unfavorable position of the folding, in order to implement
Supply voltage limits specified in 19.1.
19.103 portable heating carpet for electric components equipped with internal wiring or a stranded wire composed of, or even an internal heating element
Wire strand breaks have one or more, the appliance should not produce excessive temperatures in normal use.
Compliance is checked by 19.103.1 19.103.3 applicable to tests or through evaluation of the protection system.
NOTE: Any non-sheathed within a flexible core cord from the cord member and the clamping means extending over 100mm long are considered internal wiring.
19.103.1 If internal wiring electrically insulating or does not have a heating element between each of the stocks were not insulated strands, and, at the most unfavorable
The position of the flexible member to open the jacket so that an internal wiring or a short bare wire heating element is exposed. In addition to the strands leaving a
All the rest of the outer strands cut and folded back strands are cut away from the mouth of about 15mm, and the jacket is closed and the appliance in normal operating
4h under working condition.
If the single-stranded break before any damage appears, the number of strands will not cut off is increased, this test was repeated until a break can be prevented
Chunghwa required minimum crack stop.
After the test, the jacket material or any uncut strand contact, should not be charred.
If no electrical insulation 19.103.2 and internal wiring or insulation between heating elements each having integrally stranded, then in the worst
The position of the flexible member to open the jacket so that internal wiring short insulated conductors or heating element is exposed. Take a 100mm
The same long single stranded around this insulated wire around a full circle, the two ends of the ring apart 1mm.
The strands of wire in series, and the jacket is closed and the appliance is operated under normal operating conditions for 4h.
If the single-stranded break before any damage appears, the number of strands will not cut off is increased, this test was repeated until a break can be prevented
Chunghwa required minimum crack stop.
After the test, or other flexible material of the insulating member wire shall not be damaged.
Note: small indentation on the wire insulation is negligible.
19.103.3 If heating elements or strands having an independent internal wirings are electrically insulated from each other, so that the heating element or internal
Disconnected from the wiring terminals. Applying a DC voltage of approximately 500V between any two strands, too 1min.
Measuring the insulation resistance, the insulation resistance and this should be not less than:
For class Ⅲ --- appliances: 0.1MΩ;
--- For other appliances: 1MΩ.
20 Stability and mechanical hazards
GB 4706.1 of this chapter do not apply.
21 Mechanical strength
GB 4706.1 of this chapter except as follows, are applicable:
21.1 increase:
The rigid member is an impact only on the appliance.
101 NOTE: Use the normal transport and installation.
Heating means should be subjected to the tests of 21.101 and 21.102.
Electric apparatus equipped with an insulated wire also be subjected to the tests of 21.103,21.104, and 21.105.
Electric carpet equipped with an insulated wire should be subjected to the tests of 21.104 and 21.105.
21.101 partially heating element sandwiched between two thick 100mm, a size sufficient to completely cover the heating element width Hardboard, a hardwood
Each side plate is rounded with a radius of an arc of 50mm.
This combination is placed in a member or mounting -5 ℃ predetermined minimum ambient temperature environment, whichever is lower. When the heating element of
When this temperature, the free end curved around the arcuate edge of the board, in both directions and then completely bent to 180 [deg.] C to its normal
Position, the bending operation to be performed three times.
Then, an electric device to be subjected to the electric strength test of 16.3, and should not affect compliance with this degree of partial damage.
21.102 take two electric devices or printed circuit covered with heating elements subjected to the following tests:
The heating means on a level with the smooth surface of the steel sheet, for scratching the surface with a hard steel, for heating elements, the needle end portion
The 40 ° conical tip circle radius is 0.25mm ± 0.02mm. For the appliance on a concrete floor, and the like, applied to the needle
Was added 10N ± 0.5N axial force; for other floor tool, an axial force is applied to the needle 5N ± 0.5N. About
20mm/s speeds will be moved along the surface scratching needle, needle holder and the direction of movement of the vertical line of 5 ° to 10 ° angle.
In each of the three sides of a heating element rubs, at least 50mm from each other, and should be parallel with the long sides of the heating means, and from
Wherein at least one side 10mm, a length approximately equal to the width of the scratching heating apparatus. If the heating element having an electrode, there should be a virtually scratch
It is carried out along one of the electrodes.
Carried out across the entire width of each two similar rubs both sides of the other heating elements.
Then, an electric device to be subjected to the electric strength test of 16.3.
21.103 heating means placed on a rigid portion of the steel sheet, to a diameter of 6mm, a length of 20mm and an end radius
3mm steel bars placed across the heating means so that the bar can only be brought into contact with a position.
With a force of 1000N is applied onto the bar, too 30s.
Different positions at least 50mm of this force is applied to the five separated.
Then, an electric device to be subjected to the electric strength test of 16.3. If the insulating heater comprising at least one wire, the wire should be
Basic insulation between the test, and it should not affect compliance with this standard degree of damage.
21.104 electric device is placed on a central support 600mm immobilized on the straight edge of the tongue and groove hardwood floor (100mm ×
), There should be a gap of 3mm 25mm between the plate and the floor plate, before each start of the test plate put back in place. If the heating device is provided
Meter use underlay to install, should the installation instructions. The glow element at right angles relative to the floor of the recess to install, according to the manufacturing
And the support assembly's instructions electrothermal apparatus, and make it work in a normal working state.
Take one gram weight of 0.24kg/m2, the warp and weft density of 24 × 24 (yarns/cm) on top of the cotton canvas electric apparatus.
With a screw having a seat and a lock for 2500 cycles of heating means in the sub-casters wheelchair five horizontal plane rotating means
Turn test.
Caster circumference of the pitch circle diameter of about 260mm. Caster diameter of about 50mm, a width of about 20mm, from the crank
About 32mm.
Each cycle includes a chair 3min rotating in one direction and then again in the opposite direction of rotation 3min. To chair a heavy load during the test
So that the total weight of 90kg ± 1kg (chair comprising by weight), the chair/caster assembly is rotated at a speed 15r/min ± 1r/min of.
This test also applies to electric carpet, but without cotton canvas.
Then, the test instrument should be subjected to electric strength test of 16.3, and should not affect compliance with this degree of partial damage.
Note: For the heating means, in addition to the power cord and a plug provided with electric heating means, its electric cord is connected to a portion of the device.
21.105 heating elements, the sample or the ground conductor connected to the internal wiring apparatus shown in FIG. 106, the device has a two-band
Pulley wheels, each wheel has a diameter groove radius, groove bottom of 4mm to 25mm, two wheels mounted position
Samples can be placed between them by level.
Note 1: the sample of non-circular cross-section, the form of grooves on the wheel to change accordingly.
Note 2: As for the conductive metal foil laminate, the laminate sheet from the cut strip width of 10mm.
The sample was expanded on wheels, each end are put a weight of a load of 0.25kg. If necessary, at each end of the load
In each level gradually increasing from 0.1kg to ensure that the heating element or wire wheels parallel to each other. Position-regulating jig total tension should be
It is applied by reversing the direction of movement of the weight toward the trolley.
Trolley means via a chain of about 0.33m/s constant speeds exceeding 1000 cycles on 1m stroke.
Note 3: a cycle includes two motion, once each direction.
Samples should not be damaged during the test.
NOTE 4: During the test, can not exceed 50mA monitoring a current through the sample.
For the PTC heating device with a heating element, before the test and after the test input power is measured. This measurement should be heating elements
Vertically hanging in the air and supplied to the appliance at the rated voltage, two measurements should be the same ambient temperature and reaches the input power
It was steady. During the test there should be no increase in input power.
The samples were then immersed in water containing about 1% NaCl, and a DC voltage of approximately 500V is applied between the conductor and the salt solution.
The insulation resistance should be measured and should be at least 1MΩ after immersion in 1min.
22 Construction
GB 4706.1 of this chapter except for the following content, are applicable.
22.101 addition Ⅲ appliances, the heating means should be Ⅱ type structure, and with protective earth.
By visual inspection and tested for class Ⅱ structure to determine eligibility.
22.102 insulating connector cover and each edge of the heating element and any adhesive properties should not affect the heating element or insulating material.
Compliance is checked by the following test.
The heating means is placed in an oven, the inside temperature of 80 ℃ or 45 ℃ Chapter 11 plus determined temperature during the test, select high
Who trials 336h.
Means for cooling the glow subjected to the electric strength test after 16.3 to about room temperature.
22.103 electric carpet laminate sheet for mounting electric heating elements should be firmly adhered to each other.
Compliance is checked by the following test.
From a new heating element laminate member six samples cut size of about 100mm × 130mm, the sample should be taken from each
And the heating element and the heat generating surface towards the vertical edges and parallel.
Wherein each sample-side ends of the long side of 100mm side from a surface cut of a width of 25mm holding electric element
Material member in place; in each sample edge length 100mm other end side of the same cut strip from the other surface of the specimens. In stripping
Any apart heating elements on the strip specimens should be cut.
NOTE: To test the adhesive holding the layers of the heating element, the material may need to cut more than one layer.
Jig clamped over the entire side length of the remaining layer material at both ends of the sample, respectively.
Wherein the clamp and then through a sample suspended, subjected to a total load of 1.25kg through the other clamp. This test
For 1h at 20 ℃ temperature, and then for 1h at a temperature 80 ℃.
Holding in place the heating element should not separate layers.
Removed from the appliance undergone a Chapters 11 and 19 of the six samples tested, this test is repeated.
22.104 connecting power leads and the mounting means interconnecting wires should Ⅱ class structure, without the aid of tools can not be separated from it.
Compliance is checked by inspection.
22.105 unless the appliance contains heating elements operating at safety extra-low voltage, otherwise the appliance should be equipped with:
--- When the heating element insulation is pierced, the protection circuit capable of disconnecting the power supply in a bipolar power frequency period, or
--- enclosed heating element insulated from an earth metallic screen.
It should not be reset automatically or automatically when power is removed reclosing piercing tool with respect to the object of the protection circuit, the protection circuit.
Compliance is checked by the following test.
--- For the appliance with the protective circuit, the test 22.105.1;
--- with respect to the insulating member enclosed heating appliance grounded metal shielding net, and tested 22.105.2 27.5.
22.105.1 supplied with the rated voltage to the appliance, try to GB/T 16842 D-type test probe inserted into the tool to touch the heating element
Insulation, is applied to the probe of a force of about 10N. If the probe can reach into the insulation, the operation of the protection circuit should be such that a power supply frequency
All-pole disconnect in the rate cycle.
When the probe is removed from the reach of the appliance, should the need to manually re-supply to the heating element.
If the protection circuit is not dependent on the power supply system connected to the protective earth to cause its action,
--- voltage detection period, and before the detection probe should be less than 24V, and
twenty one
--- the maximum current flowing through the probe shall not exceed 5mA,
Measurement of power or any conductor pairs.
If the protection system relies on contact with the conductive layer (e.g., a metal braid or a metal foil) and to facilitate their operation is not satisfied if the conductive layer on the
27.5 In accessible grounded metal requirements, the conductive layer should be isolated by double insulation or reinforced insulation with a charging member, and meet with
The basic requirements of the insulating sheath covering the conductive layers together.
22.105.2 try to GB/T 16842 D-type test probe inserted into the tool to touch the insulating heating elements, applied to a probe
Force of about 10N. It shall not touch the heating element to the insulation, shielding and no touch.
For a power supply system with 22.106 dependent protective device protection circuit ground connection, unless the protective earth connections are very low pressure,
Otherwise it shall not be possible to power the heating element.
Compliance is checked by the following test.
To a 10Ω resistor connected in series between the protection circuit and to the electrical power system protective earth connection, when the appliance is supplied with a rated
When pressed, the heating element should not be charged.
When 22.107 when the heating element is assembled directly in the region of the glow of the carpet fabric, should wear a top heating element on the interior carpet
Indicator (e.g., color change) may be such that the indicator becomes visible before the heating element is exposed insulation system.
Visual inspection carried out after removal of the upper region of the jacket heating the carpet (suede/treading layer) to determine eligibility.
Internal wiring 23
GB 4706.1 of this chapter apply.
Element 24
GB 4706.1 of this chapter except as follows, are applicable:
24.101 To comply with Section 19 required thermal breaker with automatic release mechanism should be non-self-resetting thermal circuit breaker.
Compliance is checked by inspection.
24.102 controllers and other elements to comply with this part required to be delivered together with the appliance.
Compliance is checked by inspection.
25 and the external power connection cord
GB 4706.1 of this chapter except as follows, are applicable:
25.1 Review:
Portable electric carpet shall be fitted with a minimum length of 2.3m power cord.
Compliance is checked by inspection and measurement.
25.3 Replacement:
Stationary heating means having one of the following should be permanently connected to the fixed wiring means:
--- a set of supply leads;
--- a power cord.
The minimum length of 3m.
Compliance is checked by inspection and measurement.
25.5 Replacement:
The power cord should be connected to the appliance connector or a Y-Z-connected manner.
Compliance is checked by inspection.
25.15 Review:
Means irrespective weight, tension is 100N.
External terminal conductors 26
GB 4706.1 of this chapter apply.
27 earthing
GB 4706.1 of this chapter apply.
28 and screw connection
GB 4706.1 of this chapter apply.
Clearances 29, creepage distances and solid insulation
GB 4706.1 of this chapter except for the following content, are applicable.
29.1 Review:
Portable electric c......
Related standard:   GB 4706.109-2013  GB 4706.107-2012
   
 
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