GB 4706.19-1999 Special requirements for safe liquid heaters for household and similar electrical appliances
Some standard content:
GB4706.191999 | This standard should be used in conjunction with GB4706.1-1998 "Safety of Household and Similar Electrical Appliances Part 1: General Requirements".
The part of this standard that says "Applicable" means that the corresponding provisions in GB4706.1-1998 are applicable to this standard; the part of this standard that says "replace" should be based on the provisions of this standard. shall prevail; the part marked "added" in this standard means that in addition to the corresponding provisions in GB4706.1-1998, it must also comply with the added provisions in this standard and GB4706.19--1988. The main differences are as follows: This standard applies not only to liquid heaters, but also to special requirements for electric kettles; this standard adds requirements for cordless kettles and steam pressure coffee makers; this standard proposes a complete set of requirements for pressure liquids Test methods for heaters: The number of samples of automatic coffee pots to be tested in Article 15.101 is 3; the test time requirements for fixed appliances are added, and requirements for the water leakage rate after overturning are required for some portable appliances. From the date of implementation, this standard will also replace GB4706.4-1986 and GB4706.19-1988. This standard was proposed and centralized by the National Technical Committee for Household Electrical Appliances. The drafting unit of this standard is: China Household Electrical Appliances Research Institute. The main drafter of this standard is: Deng Xu. , Pan Quan, Xie Yaohua, Xu Li, Lu Weiqiang. This standard is entrusted to the National Technical Committee for Standardization of Household Electrical Appliances to be responsible for interpretation.
IEC Preface
1) IEC (International Electrotechnical Commission) is responsible for the interpretation. The international standardization organization composed of all national electrotechnical committees (IEC National Committees) aims to promote international cooperation on standardization issues in the electrical and electronic fields. To this end, IEC carries out international standardization activities and publishes international standards. The formulation is entrusted to various technical committees. Any IEC National Committee interested in the technical issues can participate in the formulation work. IEC and the International Organization for Standardization (ISO) can also participate in the formulation work. ) close cooperation on the basis of an agreement between the two organizations. 2) Formal resolutions or agreements of the EC on technical matters, drawn up by technical committees in which all national committees with a special interest in the matter are represented, as far as possible, represent the 3) These formal resolutions or agreements are published in the form of standards, technical reports or guidelines and are accepted by national committees in this sense
4) In order to achieve international consensus. The IEC National Committee agrees to use IEC international standards to the greatest extent possible in its national and regional standards. Differences between IEC standards and corresponding national or regional standards should be clearly marked in the latter. 5) IEC. There is no procedure for approval marking. IEC is not responsible for claims that a piece of equipment complies with an IEC standard.
safety). This standard constitutes the 4th edition of IEC60335-2-15, replacing its 3rd edition and its supplements. This standard is based on the following documents:
DIS
61/895/DIS
Voting Report
61/985/RVD
About the adoption of this standard All material at the time can be found in the voting report shown above. This standard should be used in conjunction with the latest version of IEC60335-1 and its supplements. This standard is developed based on the 3rd edition (1991) of IEC60335-1.
This standard adds or modifies the corresponding clauses of IEC60335-1, thus transforming them into this standard: Special requirements for liquid heaters. Clauses of IEC60335-1 not mentioned in this standard can be used as long as they are reasonable. The places marked with "addition", "modification" or "replacement" in this standard are corresponding modifications to the relevant provisions of IEC60335-1. Note
1 This standard uses the following printing fonts:
Text requirements: Traditional Chinese font
Test specifications: Italic font
Note: Small traditional Chinese font ||tt| |The words in boldface in the text are defined in Chapter 2. When the definition of IEC60335-1 involves adjectives, the adjectives and corresponding nouns are also in boldface. 2. Clauses added to IEC60335-1 should be numbered starting from 101. The following differences exist in some countries:
- 7.12 Appliances that are not intended to be immersed in water for cleaning may not be marked with warnings if they can withstand the inspection of 15.101 (USA), - 7.12 If the connector of the appliance has For temperature control devices, not only the instructions but also the label "The appliance must be used with the provided connector" should also be marked on the appliance (USA). —7.12 Instructions that cordless kettles may only be used with their bases shall also be marked on the appliance (USA). —11.2 Under normal circumstances, the instrument is close to one side of the test corner and 100mm away from the other side (USA). GB4706.19—1999
7 uses different test methods and test times (United States). —11.7
This test is not performed (USA).
-15.102
-19.13 The test is not the same (USA).
-19.101
1 This test is not performed (Japan).
If the thermal circuit breaker has been tested and proven to be reliable, this test will not be performed (USA). 19.101
22.7
The test pressure of a pressure cooker is 5 times the maximum normal working pressure or 2.5 times the pressure when the safety device is activated, whichever is greater (USA).
22.103
22.105
22.106
This requirement does not apply (United States).
Different external forces used (USA).
Tests vary (USA).
-22.108
Tests are not the same (USA).
24.1.3
Different number of tests (USA).
3 When the rated current exceeds 6A, power cords with a cross-sectional area of ??0.75mm are not allowed to be used (Japan, the United States). -25.8
3 allows the use of long power cords (Japan). 25.8
1 Scope
National Standard of the People's Republic of China
Safety of household and similar electrical appliances
Special requirements for liquid heaters
Safety of household and This chapter in simllar electrlcal appliancesParticular requirements for appliances of heating liquidsGB4706.1--1998 is replaced by the following content. GB 4706.19—1999
idtIEC335-2-15:1995
replaces GB4706.4-1986
GB4706.19-1988
This standard applies to the safety of liquid heaters for household and similar purposes with a rated voltage not exceeding 250V. Note
1 Some appliances can also heat food.
2 This standard applies to the following appliances:
Pots and other appliances used to produce boiling water with a rated volume not exceeding 10L! Coffee pot;
Egg boiler;
Milk warmer,
Feeding bottle heater,
Adder with rated cooking pressure not exceeding 140kPa and rated volume not exceeding 10L Pressure cooker, cooking pan,
stew pot;
yogurt maker;
steamer;
cleaning boiler.
This standard also applies to appliances that are not for general household use but are still dangerous to the public, such as appliances used by people who are unfamiliar with electricity in shops, light industries and farms.
Note
3 For example:
Livestock feed cooker;
Sterilizer;
Glue cooking pot with water jacket.
Whenever feasible, this standard also applies to appliances that may present a common hazard to all persons in and around the room. This standard does not consider:
Use of the appliance by unsupervised children and the infirm; children using the appliance as a toy.
Note
Additional requirements are generally required for appliances intended for use in cars, boats, or airplanes. Special requirements are generally required for appliances intended for use in tropical countries. In many countries, Additional requirements shall be established by national health authorities, national labor protection authorities, water supply authorities or similar competent authorities. Approved by the State Administration of Quality and Technical Supervision on November 11, 1999 for implementation on May 01, 2000
5 This standard does not apply to:
Fryers and deep fryers (IEC60335-2-13); water distribution type water heater (IEC60335-2-21); instant water heater (IEC60335-2-35); GB4706.19-1999
surface cleaner using liquid (IEC60335-2-54); commercial boiling water heaters and Liquid heater (IEC60335-2-63), portable submersible heater (IEC60335-2-74); medical appliance (IEC60601),
an industrial special appliance,
used in special environments Appliances, such as corrosive or explosive environments (dust, steam or gas); high frequency heater:
Electrode type heater:
Dry or steam pressure sterilizer.
6In many countries, the requirements for pressure vessels also apply to pressure cookers. 2 Definition
This chapter in GB4706.1-1998 is applicable except for the following content. 2.2.9 Replace:
normal operation
Normal operation
Appliances that work according to the following conditions:
Pots or boiling water vessels, coffee makers, milk warmers , leveling pots, stew pots, yogurt makers, cleaning boilers, sterilizers and glue boilers must be filled with rated volume of cold water into their containers for work, and if there is a lid, cover it. The water in the saucepan should be kept above 50% of the rated volume. Appliance for keeping liquids warm, having a heating surface, working with or without a container, whichever is more unfavorable. The egg cooker and steam cooker work according to the maximum water volume specified in the instructions. The feeding bottle heater is a heat-resistant glass bottle, round or hexagonal, with a mass of 190g to 200g and a capacity of about 225mL. Unless otherwise specified. Fill the bottle with approximately the rated volume or 200mL of water, whichever is less, and place it in the feeding bottle heater. Fill the heater with water to the water level specified in the instructions for use, or to its highest water level if there are no instructions for use. The livestock feed cooker is filled with half of the rated volume of water, and the lid is closed before working. Pour 25mm of cold water into the pressure cooker and follow the instructions. 2.101 Rated capacity ratedcapacity
The volume of the device specified by the manufacturer.
2.102 Rated cooking pressure ratedcookingpressure The appliance pressure specified by the manufacturer.
2.103 Steam pressure coffee maker espressocoffeemaker refers to a coffee maker in which water is heated in the appliance and forced through the coffee at the bottom; it can use steam pressure or a mechanical pump.
Note: This type of appliance can have an outlet for providing steam or hot water. 2.104 Feeding bottle heater feedingbottleheater is an appliance that heats the pre-prepared baby food in the feeding bottle to a predetermined temperature. The heat transfer can rely on water Finish. 2.105 Pressure regulator pressureregulator A control device that maintains pressure at a specific value under normal use. 2.106 Pressure relief device pressurerelief pressure limiting device under abnormal working conditions. 2.107 cordless kettle cordless kettle
GB4706.19—1999
The kettle has a heating element, but it can only be powered when placed on its matching base. 2.108 Steamcooker
An appliance that relies on steam to heat food under atmospheric pressure. 3 General requirements
This chapter in GB4706.1-1998 applies.
4 General conditions for testing
This chapter in GB4706.1-1998 is applicable except for the following content. 4.2 Addition:
For equipment that needs to be immersed in water for cleaning, three additional samples need to be added when conducting the test of 15.101. 4.3 Added: The test of
19.101 is performed after other tests. 5 Empty Chapter
6 Classification
This chapter in GB4706.1-1998 is applicable except for the following content. 6.2 Addition:
The waterproof level of cleaning boilers and sexual livestock feed cookers is at least IPX3. 7 Marks and instructions
This chapter in GB4706.1-1998 is applicable except for the following content . 7.1 Addition:
Appliances that are partially immersed in water for cleaning should be marked with a marking line for the maximum depth of immersion in water, and the following warning should be given: "Do not exceed this line when immersed."
The kettle should have a water level mark or other means of indicating its rated capacity when filled with water, unless the kettle will not be filled beyond its rated capacity. Or it must withstand the test of 15.2 when fully filled. This mark should be visible when the kettle is filled. If the water level mark itself is not clearly legible, there shall be a reference to the water level mark on the outer surface of the kettle which shall be visible when the kettle is in its normal working position.
If the closing position of the pressure cooker lid is not obvious, this position should be marked on the appliance. The base of a cordless kettle should have the following markings: www.bzxz.net
Manufacturer or agent name, trademark or identification mark; model number or reference type.
7.12 added:
Appliances that have appliance sockets and are partially or completely immersed in water during cleaning should state in their instructions that the connector must be removed before cleaning, and the appliance must be removed. Appliance sockets must be wiped dry before use again. If the appliance has a connector with a temperature control device, the instructions for use shall state that the appliance must be used with the connector provided. In addition to the design of the kettle so that there is no danger caused by the spray of boiling water, the instructions for use should include the following warning: If the kettle is filled too full, boiling water may spray out. If the water filling hole in the lid is under the handle, the instructions for use should include the following message: Warning: Close the lid to prevent steam from spraying onto the handle. NOTE: If the handle is high enough to steam only when the lid is closed, no warning is needed. Warning: Do not remove lid while water is boiling. GB4706.19-1999
Instructions for use of a cordless kettle should indicate that the kettle must be used in conjunction with the base. If the kettle and base of a cordless kettle can be locked together by the handle on the kettle, the instructions for use should state the following: Note : The kettle can only be removed from the base after the locking device is opened. The instructions for use of the feeding bottle should point out:
- Food cannot be heated for too long
- How to check the temperature of the food to avoid it being too hot. For appliances that usually need to be cleaned after use and cannot be immersed in water during cleaning, the instructions for use should state that the appliance must not be immersed in water.
Note: This requirement generally applies to coffee machines, milk warmers, pressure cookers, steamers, saucepans, yogurt makers and similar appliances. The operating instructions for the pressure cooker should state that the steam discharge channel of the pressure regulator must be inspected regularly to ensure that it is not blocked. Instructions for use should also specify how to safely open the container and should indicate that the container should not be opened until the pressure has been sufficiently reduced. The instructions for use of an egg boiler with an eggshell-breaking device should be as follows: Note: Avoid the eggshell-breaking device causing harm to people. 8 Protection against access to live parts
This chapter in GB4706.1-1998 is applicable except for the following content. 8.1.2 Added:
Note: The connection device on the base of the cordless kettle is not considered a socket. 9 Start-up of electric appliances
This chapter in GB4706.1--1998 does not apply. 10 Input power and current
This chapter in GB4706.1-1998 applies. 11 Fever
This chapter in GB4706.1-1998 is applicable except for the following content. 11.2 Added:
Portable appliances should be tested away from the test corner and side walls. 11.4 Addition:
If the temperature rise of an appliance with a motor, transformer or electronic circuit exceeds the limit value, and its input power is lower than the rated input power, the test shall be repeated at 1.06 times the rated voltage. 11.6 Added:
Combined appliances are inspected as electric heating appliances. 11.7 Replacement:
Kettles with temperature limiters should be reset 1 minute after the temperature limiter operates or as soon as possible after the operation. The test is terminated after the second action of the temperature limiter.
A kettle with a thermostat should work for 15 minutes after the water temperature reaches 95°C. For other types of pots, work for another 5 minutes after the water temperature reaches 95°C.
For other water boilers, egg cookers, milk warmers, feeding bottle heaters, cooking pans, cleaning boilers, sexual livestock feed cookers, sterilizers and glue boilers, the test is under the following conditions End: Appliances without a temperature controller, after the water temperature reaches 95C or the highest possible temperature (choose the lower one), then work for 15 minutes;
GB 4706.19—1999
一一一区For portable appliances with a temperature controller, the temperature controller operates for 15 minutes after the first operation; for fixed appliances with a temperature controller, the temperature controller operates for 30 minutes after the first operation, and the buzzer emits a continuous tone signal for 1 minute. , the intermittent sound gap is less than 5s. Appliances having a heating surface for heating liquids are tested with the container on the heating surface and with the container removed until a steady state is established.
Egg boilers, stew pots and yogurt makers with the ability to keep eggs warm should be operated until a stable state is established. Stew pots that require preheating in a dry state in the instructions for use can be preheated before the test begins. . The coffee machine is operated for the time required to brew the maximum amount of coffee specified in the instructions for use, and then the water is refilled into the container as quickly as possible to restart the coffee machine. Repeat this step until steady state is established. The steam pressure coffee machine works according to the instructions. Put the maximum amount of fresh coffee recommended by the manufacturer into the coffee filter. After the brewing is completed, stop for a period of time according to the instructions. If the instructions do not specify, the time is 1 minute, or the filter The time to change the coffee is longer. The water container is filled with water during the stop time. Note 1: Unless otherwise specified in the instruction manual, one cup equals 100cm. A steam pressure coffee machine with a steam or hot water outlet that supplies steam or water immediately after each brewing process for a time specified by the manufacturer.
Note 2, steam enters a container filled with cold water. The steam pressure coffee machine works until a steady state is established. After the pressure cooker reaches the maximum cooking pressure, work for another 15 minutes. 11.8 Added:
If the connector of the appliance is equipped with a thermostat, there is no limit on the temperature rise of its pins. When the appliance is operating at 1.15 times the rated power, the temperature rise of the motor, transformer, electronic circuit components and parts directly affected by them can exceed the limit value.
12 Empty Chapter
3 Leakage current and electrical strength at operating temperature 13
This chapter in GB4706.1-1998 applies. 14 Empty Chapter
15 Moisture Resistance
This chapter in GB4706.1-1998 is applicable except for the following content. 15.2 Added:
The test is performed after the connector is connected. When in doubt, a water overflow test should be carried out, and the angle of the appliance from the normal use position shall not exceed 5°C. A pot that can be filled with water from the spout should be placed on an inclined plate at an angle of 20° to the horizontal, with the spout facing upwards. If the water level mark can be seen clearly at the water filling position, pour 1% NaCI solution to the highest water level mark. Otherwise, water should be filled until the water in the pot overflows, and then as quickly as possible, add 15% of the NaCI solution equal to the rated capacity of the pot. % of water is poured into the pot. Cordless kettles are tested on a horizontal surface with and without the kettle on its base. If such a kettle can still be filled with water through the spout, after the test in which the kettle is not on its base, the kettle should be placed on its base again and the electrical strength test of 16.3 should be carried out again.
15.101 Appliances that are partially or completely immersed in water for cleaning should be adequately protected against the effects of immersion. Adequate protection measures should be taken to avoid the effects of flooding. | | tt | If there is no thermostat, work until it reaches a stable state. Then remove the connector or disconnect the power supply, and immediately immerse the sample completely in water between 10°C and 25°C; if the appliance is marked with a mark line for the maximum depth that can be immersed, immerse it to a point 5cm beyond the mark line. After 1 hour, take the sample out of the water, dry it and conduct the leakage current test in 16.2. Note: It should be noted that the insulation around the pins of the appliance input socket should be kept dry during the test. This test must be conducted more than four times, and then the 16.3 electrical strength test is performed, but the voltage is reduced to 1000V. After the fifth immersion test, the appliance with the largest leakage current must be disassembled and inspected. There should be no water marks on the insulation that would cause the creepage distance and electrical clearance to be lower than the values ??specified in 29.1.
Then, the remaining two appliances work in normal working condition for 240h. After the above period, remove the connector or turn off the power and repeat the initial test. The appliance shall withstand the electrical strength test of 16.3, but with the voltage reduced to 1000V.
During inspection, there should be no water marks on the insulation that would cause the creepage distance and electrical clearance to be lower than the values ??specified in 29.1. 15.102 The base of a cordless kettle shall be constructed so that the connecting means are not affected by water. Whether it is qualified or not is checked through the following test: place the base on a horizontal surface, pour 30 mL of 1% NaCl solution through a test tube with an inner diameter of 8 mm, and pour it from a height of 200 mm onto the connector within 2 seconds.
Then, conduct the electrical strength test on the base according to 16.3 (for reinforced insulation, the test voltage is reduced to 2500V)). 16 Leakage current and electrical strength
This chapter in GB4706.1-1998 applies. 17 Overload protection of transformers and related circuits This chapter in GB4706.1-1998 applies. 18 Durability
This chapter in GB4706.1-1998 is not applicable. 19 Abnormal operation
This chapter in GB4706.1-1998 is applicable except for the following content. 19.1 added:
For pots, the inspection of 19.101 is also required. 19.2 Added:
During the test, the instrument should be as close to the test corner wall as possible. The test is carried out with the appliance unloaded, with the lid open or closed, whichever is more unfavorable. Kettles are not subject to this test.
19.3 addition:
For kettles, test at 1.15 times the rated input power. Pour enough water into the pot to submerge the heating element. If the heating element is outside the container, pour 10mm of water into the pot. Open or close the lid. Choose the less favorable one and repeat test 19.4. Increase:
Note: The kettle control device, which is treated as a circuit breaker, is considered inoperative.This chapter in 1-1998 shall apply except for the following content. 8.1.2 Added:
Note: The connection device on the base of the cordless kettle is not considered a socket. 9 Start-up of electric appliances
This chapter in GB4706.1--1998 does not apply. 10 Input power and current
This chapter in GB4706.1-1998 applies. 11 Fever
This chapter in GB4706.1-1998 is applicable except for the following content. 11.2 Added:
Portable appliances should be tested away from the test corner and side walls. 11.4 Addition:
If the temperature rise of an appliance with a motor, transformer or electronic circuit exceeds the limit value, and its input power is lower than the rated input power, the test shall be repeated at 1.06 times the rated voltage. 11.6 Added:
Combined appliances are inspected as electric heating appliances. 11.7 Replacement:
Kettles with temperature limiters should be reset 1 minute after the temperature limiter operates or as soon as possible after the operation. The test is terminated after the second action of the temperature limiter.
A kettle with a thermostat should work for 15 minutes after the water temperature reaches 95°C. For other types of pots, work for another 5 minutes after the water temperature reaches 95°C.
For other water boilers, egg cookers, milk warmers, feeding bottle heaters, cooking pans, cleaning boilers, sexual livestock feed cookers, sterilizers and glue boilers, the test is under the following conditions End: Appliances without a temperature controller, after the water temperature reaches 95C or the highest possible temperature (choose the lower one), then work for 15 minutes;
GB 4706.19—1999
一一一区For portable appliances with a temperature controller, the temperature controller operates for 15 minutes after the first operation; for fixed appliances with a temperature controller, the temperature controller operates for 30 minutes after the first operation, and the buzzer emits a continuous tone signal for 1 minute. , the intermittent sound gap is less than 5s. Appliances having a heating surface for heating liquids are tested with the container on the heating surface and with the container removed until a steady state is established.
Egg boilers, stew pots and yogurt makers with the ability to keep eggs warm should be operated until a stable state is established. Stew pots that require preheating in a dry state in the instructions for use can be preheated before the test begins. . The coffee machine is operated for the time required to brew the maximum amount of coffee specified in the instructions for use, and then the water is refilled into the container as quickly as possible to restart the coffee machine. Repeat this step until steady state is established. The steam pressure coffee machine works according to the instructions. Put the maximum amount of fresh coffee recommended by the manufacturer into the coffee filter. After the brewing is completed, stop for a period of time according to the instructions. If the instructions do not specify, the time is 1 minute, or the filter The time to change the coffee is longer. The water container is filled with water during the stop time. Note 1: Unless otherwise specified in the instruction manual, one cup equals 100cm. A steam pressure coffee machine with a steam or hot water outlet that supplies steam or water immediately after each brewing process for a time specified by the manufacturer.
Note 2, steam enters a container filled with cold water. The steam pressure coffee machine works until a steady state is established. After the pressure cooker reaches the maximum cooking pressure, work for another 15 minutes. 11.8 Added:
If the connector of the appliance is equipped with a thermostat, there is no limit on the temperature rise of its pins. When the appliance is operating at 1.15 times the rated power, the temperature rise of the motor, transformer, electronic circuit components and parts directly affected by them can exceed the limit value.
12 Empty Chapter
3 Leakage current and electrical strength at operating temperature 13
This chapter in GB4706.1-1998 applies. 14 Empty Chapter
15 Moisture Resistance
This chapter in GB4706.1-1998 is applicable except for the following content. 15.2 Added:
The test is performed after the connector is connected. When in doubt, a water overflow test should be carried out, and the angle of the appliance from the normal use position shall not exceed 5°C. A pot that can be filled with water from the spout should be placed on an inclined plate at an angle of 20° to the horizontal, with the spout facing upwards. If the water level mark can be seen clearly at the water filling position, pour 1% NaCI solution to the highest water level mark. Otherwise, water should be filled until the water in the pot overflows, and then as quickly as possible, add 15% of the NaCI solution equal to the rated capacity of the pot. % of water is poured into the pot. Cordless kettles are tested on a horizontal surface with and without the kettle on its base. If such a kettle can still be filled with water through the spout, after the test in which the kettle is not on its base, the kettle should be placed on its base again and the electrical strength test of 16.3 should be carried out again.
15.101 Appliances that are partially or completely immersed in water for cleaning should have adequate protection against the effects of immersion. Adequate protection measures should be taken to avoid the effects of flooding. | | tt | If there is no thermostat, work until it reaches a stable state. Then remove the connector or disconnect the power supply, and immediately immerse the sample completely in water between 10°C and 25°C; if the appliance is marked with a mark line for the maximum depth that can be immersed, immerse it to a point 5cm beyond the mark line. After 1 hour, take the sample out of the water, dry it and conduct the leakage current test in 16.2. Note: It should be noted that the insulation around the pins of the appliance input socket should be kept dry during the test. This test must be conducted more than four times, and then the 16.3 electrical strength test is performed, but the voltage is reduced to 1000V. After the fifth immersion test, the appliance with the largest leakage current must be disassembled and inspected. There should be no water marks on the insulation that would cause the creepage distance and electrical clearance to be lower than the values ??specified in 29.1.
Then, the remaining two appliances work in normal working condition for 240h. After the above period, remove the connector or turn off the power and repeat the initial test. The appliance shall withstand the electrical strength test of 16.3, but with the voltage reduced to 1000V.
During inspection, there should be no water marks on the insulation that would cause the creepage distance and electrical clearance to be lower than the values ??specified in 29.1. 15.102 The base of a cordless kettle shall be constructed so that the connecting means are not affected by water. Whether it is qualified or not is checked through the following test: place the base on a horizontal surface, pour 30 mL of 1% NaCl solution through a test tube with an inner diameter of 8 mm, and pour it from a height of 200 mm onto the connector within 2 seconds.
Then, conduct the electrical strength test on the base according to 16.3 (for reinforced insulation, the test voltage is reduced to 2500V)). 16 Leakage current and electrical strength
This chapter in GB4706.1-1998 applies. 17 Overload protection of transformers and related circuits This chapter in GB4706.1-1998 applies. 18 Durability
This chapter in GB4706.1-1998 is not applicable. 19 Abnormal operation
This chapter in GB4706.1-1998 is applicable except for the following content. 19.1 added:
For pots, the inspection of 19.101 is also required. 19.2 Added:
During the test, the instrument should be as close to the test corner wall as possible. The test is carried out with the appliance unloaded, with the lid open or closed, whichever is more unfavorable. Kettles are not subject to this test.
19.3 addition:
For kettles, test at 1.15 times the rated input power. Pour enough water into the pot to submerge the heating element. If the heating element is outside the container, pour 10mm of water into the pot. Open or close the lid. Choose whichever is more unfavorable and repeat test 19.4. Increase:
Note: The kettle control device, which is treated as a circuit breaker, is considered inoperative.This chapter in 1-1998 shall apply except for the following content. 8.1.2 Added:
Note: The connection device on the base of the cordless kettle is not considered a socket. 9 Start-up of electric appliances
This chapter in GB4706.1--1998 does not apply. 10 Input power and current
This chapter in GB4706.1-1998 applies. 11 Fever
This chapter in GB4706.1-1998 is applicable except for the following content. 11.2 Added:
Portable appliances should be tested away from the test corner and side walls. 11.4 Addition:
If the temperature rise of an appliance with a motor, transformer or electronic circuit exceeds the limit value, and its input power is lower than the rated input power, the test shall be repeated at 1.06 times the rated voltage. 11.6 Added:
Combined appliances are inspected as electric heating appliances. 11.7 Replacement:
Kettles with temperature limiters should be reset 1 minute after the temperature limiter operates or as soon as possible after the operation. The test is terminated after the second action of the temperature limiter.
A kettle with a thermostat should work for 15 minutes after the water temperature reaches 95°C. For other types of pots, work for another 5 minutes after the water temperature reaches 95°C.
For other water boilers, egg cookers, milk warmers, feeding bottle heaters, cooking pans, cleaning boilers, sexual livestock feed cookers, sterilizers and glue boilers, the test is under the following conditions End: Appliances without a temperature controller, after the water temperature reaches 95C or the highest possible temperature (choose the lower one), then work for 15 minutes;
GB 4706.19—1999
一一一区For portable appliances with a temperature controller, the temperature controller operates for 15 minutes after the first operation; for fixed appliances with a temperature controller, the temperature controller operates for 30 minutes after the first operation, and the buzzer emits a continuous tone signal for 1 minute. , the intermittent sound gap is less than 5s. Appliances having a heating surface for heating liquids are tested with the container on the heating surface and with the container removed until a steady state is established.
Egg boilers, stew pots and yogurt makers with the ability to keep eggs warm should be operated until a stable state is established. Stew pots that require preheating in a dry state in the instructions for use can be preheated before the test begins. . The coffee machine is operated for the time required to brew the maximum amount of coffee specified in the instructions for use, and then the water is refilled into the container as quickly as possible to restart the coffee machine. Repeat this step until steady state is established. The steam pressure coffee machine works according to the instructions. Put the maximum amount of fresh coffee recommended by the manufacturer into the coffee filter. After the brewing is completed, stop for a period of time according to the instructions. If the instructions do not specify, the time is 1 minute, or the filter The time to change the coffee is longer. The water container is filled with water during the stop time. Note 1: Unless otherwise specified in the instruction manual, one cup equals 100cm. A steam pressure coffee machine with a steam or hot water outlet that supplies steam or water immediately after each brewing process for a time specified by the manufacturer.
Note 2, steam enters a container filled with cold water. The steam pressure coffee machine works until a steady state is established. After the pressure cooker reaches the maximum cooking pressure, work for another 15 minutes. 11.8 Added:
If the connector of the appliance is equipped with a thermostat, there is no limit on the temperature rise of its pins. When the appliance is operating at 1.15 times the rated power, the temperature rise of the motor, transformer, electronic circuit components and parts directly affected by them can exceed the limit value.
12 Empty Chapter
3 Leakage current and electrical strength at operating temperature 13
This chapter in GB4706.1-1998 applies. 14 Empty Chapter
15 Moisture Resistance
This chapter in GB4706.1-1998 is applicable except for the following content. 15.2 Added:
The test is performed after the connector is connected. When in doubt, a water overflow test should be carried out, and the angle of the appliance from the normal use position shall not exceed 5°C. A pot that can be filled with water from the spout should be placed on an inclined plate at an angle of 20° to the horizontal, with the spout facing upwards. If the water level mark can be seen clearly at the water filling position, pour 1% NaCI solution to the highest water level mark. Otherwise, water should be filled until the water in the pot overflows, and then as quickly as possible, add 15% of the NaCI solution equal to the rated capacity of the pot. % of water is poured into the pot. Cordless kettles are tested on a horizontal surface with and without the kettle on its base. If such a kettle can still be filled with water through the spout, after the test in which the kettle is not on its base, the kettle should be placed on its base again and the electrical strength test of 16.3 should be carried out again.
15.101 Appliances that are partially or completely immersed in water for cleaning should have adequate protection against the effects of immersion. Adequate protection measures should be taken to avoid the effects of flooding. | | tt | If there is no thermostat, work until it reaches a stable state. Then remove the connector or disconnect the power supply, and immediately immerse the sample completely in water between 10°C and 25°C; if the appliance is marked with a mark line for the maximum depth that can be immersed, immerse it to a point 5cm beyond the mark line. After 1 hour, take the sample out of the water, dry it and conduct the leakage current test in 16.2. Note: It should be noted that the insulation around the pins of the appliance input socket should be kept dry during the test. This test must be conducted more than four times, and then the 16.3 electrical strength test is performed, but the voltage is reduced to 1000V. After the fifth immersion test, the appliance with the largest leakage current must be disassembled and inspected. There should be no water marks on the insulation that would cause the creepage distance and electrical clearance to be lower than the values ??specified in 29.1.
Then, the remaining two appliances work in normal working condition for 240h. After the above period, remove the connector or turn off the power and repeat the initial test. The appliance shall withstand the electrical strength test of 16.3, but with the voltage reduced to 1000V.
During inspection, there should be no water marks on the insulation that would cause the creepage distance and electrical clearance to be lower than the values ??specified in 29.1. 15.102 The base of a cordless kettle shall be constructed so that the connecting means are not affected by water. Whether it is qualified or not is checked through the following test: Place the base on a horizontal surface, pour 30 mL of 1% NaCl solution through a test tube with an inner diameter of 8 mm, and pour it from a height of 200 mm onto the connector within 2 seconds.
Then, conduct the electrical strength test on the base according to 16.3 (for reinforced insulation, the test voltage is reduced to 2500V)). 16 Leakage current and electrical strength
This chapter in GB4706.1-1998 applies. 17 Overload protection of transformers and related circuits This chapter in GB4706.1-1998 applies. 18 Durability
This chapter in GB4706.1-1998 is not applicable. 19 Abnormal operation
This chapter in GB4706.1-1998 is applicable except for the following content. 19.1 added:
For pots, the inspection of 19.101 is also required. 19.2 Addition:
During the test, the instrument should be as close to the test corner wall as possible. The test is conducted with the appliance unloaded, with the lid open or closed, whichever is more unfavorable. Kettles are not subject to this test.
19.3 addition:
For kettles, test at 1.15 times the rated input power. Pour enough water into the pot to submerge the heating element. If the heating element is outside the container, pour 10mm of water into the pot. Open or close the lid. Choose whichever is more unfavorable and repeat test 19.4. Increase:
Note: The kettle control device, which is treated as a circuit breaker, is considered inoperative.7 Replacement:
Kettles with temperature limiters should be reset 1 minute after the temperature limiter operates or as soon as possible after the operation. The test is terminated after the second action of the temperature limiter.
A kettle with a thermostat should work for 15 minutes after the water temperature reaches 95°C. For other types of pots, work for another 5 minutes after the water temperature reaches 95°C.
For other water boilers, egg cookers, milk warmers, feeding bottle heaters, cooking pans, cleaning boilers, sexual livestock feed cookers, sterilizers and glue boilers, the test is under the following conditions End: Appliances without a temperature controller, after the water temperature reaches 95C or the highest possible temperature (choose the lower one), then work for 15 minutes;
GB 4706.19—1999
一一一区For portable appliances with a temperature controller, the temperature controller operates for 15 minutes after the first operation; for fixed appliances with a temperature controller, the temperature controller operates for 30 minutes after the first operation, and the buzzer emits a continuous tone signal for 1 minute. , the intermittent sound gap is less than 5s. Appliances having a heating surface for heating liquids are tested with the container on the heating surface and with the container removed until a steady state is established.
Egg boilers, stew pots and yogurt makers with the ability to keep eggs warm should be operated until a stable state is established. Stew pots that require preheating in a dry state in the instructions for use can be preheated before the test begins. . The coffee machine is operated for the time required to brew the maximum amount of coffee specified in the instructions for use, and then the water is refilled into the container as quickly as possible to restart the coffee machine. Repeat this step until steady state is established. The steam pressure coffee machine works according to the instructions. Put the maximum amount of fresh coffee recommended by the manufacturer into the coffee filter. After the brewing is completed, stop for a period of time according to the instructions. If the instructions do not specify, the time is 1 minute, or the filter The time to change the coffee is longer. The water container is filled with water during the stop time. Note 1: Unless otherwise specified in the instruction manual, one cup equals 100cm. A steam pressure coffee machine with a steam or hot water outlet that supplies steam or water immediately after each brewing process for a time specified by the manufacturer.
Note 2, steam enters a container filled with cold water. The steam pressure coffee machine works until a steady state is established. After the pressure cooker reaches the maximum cooking pressure, work for another 15 minutes. 11.8 Added:
If the connector of the appliance is equipped with a thermostat, there is no limit on the temperature rise of its pins. When the appliance is operating at 1.15 times the rated power, the temperature rise of the motor, transformer, electronic circuit components and parts directly affected by them can exceed the limit value.
12 Empty Chapter
3 Leakage current and electrical strength at operating temperature 13
This chapter in GB4706.1-1998 applies. 14 Empty Chapter
15 Moisture Resistance
This chapter in GB4706.1-1998 is applicable except for the following content. 15.2 Added:
The test is performed after the connector is connected. When in doubt, a water overflow test should be carried out, and the angle of the appliance from the normal use position shall not exceed 5°C. A pot that can be filled with water from the spout should be placed on an inclined plate at an angle of 20° to the horizontal, with the spout facing upwards. If the water level mark can be seen clearly at the water filling position, pour 1% NaCI solution to the highest water level mark. Otherwise, water should be filled until the water in the pot overflows, and then as quickly as possible, add 15% of the NaCI solution equal to the rated capacity of the pot. % of water is poured into the pot. Cordless kettles are tested on a horizontal surface with and without the kettle on its base. If such a kettle can still be filled with water through the spout, after the test in which the kettle is not on its base, the kettle should be placed on its base again and the electrical strength test of 16.3 should be carried out again.
15.101 Appliances that are partially or completely immersed in water for cleaning should have adequate protection against the effects of immersion. Adequate protection measures should be taken to avoid the effects of flooding. | | tt | If there is no thermostat, work until it reaches a stable state. Then remove the connector or disconnect the power supply, and immediately immerse the sample completely in water between 10°C and 25°C; if the appliance is marked with a mark line for the maximum depth that can be immersed, immerse it to a point 5cm beyond the mark line. After 1 hour, take the sample out of the water, dry it and conduct the leakage current test in 16.2. Note: It should be noted that the insulation around the pins of the appliance input socket should be kept dry during the test. This test must be conducted more than four times, and then the 16.3 electrical strength test is performed, but the voltage is reduced to 1000V. After the fifth immersion test, the appliance with the largest leakage current must be disassembled and inspected. There should be no water marks on the insulation that would cause the creepage distance and electrical clearance to be lower than the values ??specified in 29.1.
Then, the remaining two appliances work in normal working condition for 240h. After the above period, remove the connector or turn off the power and repeat the initial test. The appliance shall withstand the electrical strength test of 16.3, but with the voltage reduced to 1000V.
During inspection, there should be no water marks on the insulation that would cause the creepage distance and electrical clearance to be lower than the values ??specified in 29.1. 15.102 The base of a cordless kettle shall be constructed so that the connecting means are not affected by water. Whether it is qualified or not is checked through the following test: Place the base on a horizontal surface, pour 30 mL of 1% NaCl solution through a test tube with an inner diameter of 8 mm, and pour it from a height of 200 mm onto the connector within 2 seconds.
Then, conduct the electrical strength test on the base according to 16.3 (for reinforced insulation, the test voltage is reduced to 2500V)). 16 Leakage current and electrical strength
This chapter in GB4706.1-1998 applies. 17 Overload protection of transformers and related circuits This chapter in GB4706.1-1998 applies. 18 Durability
This chapter in GB4706.1-1998 is not applicable. 19 Abnormal operation
This chapter in GB4706.1-1998 is applicable except for the following content. 19.1 added:
For pots, the inspection of 19.101 is also required. 19.2 Addition:
During the test, the instrument should be as close to the test corner wall as possible. The test is conducted with the appliance unloaded, with the lid open or closed, whichever is more unfavorable. Kettles are not subject to this test.
19.3 addition:
For kettles, test at 1.15 times the rated input power. Pour enough water into the pot to submerge the heating element. If the heating element is outside the container, pour 10mm of water into the pot. Open or close the lid. Choose the less favorable one and repeat test 19.4. Increase:
Note: The kettle control device, which is treated as a circuit breaker, is considered inoperative.7 Replacement:
Kettles with temperature limiters should be reset 1 minute after the temperature limiter operates or as soon as possible after the operation. The test is terminated after the second action of the temperature limiter.
A kettle with a thermostat should work for 15 minutes after the water temperature reaches 95°C. For other types of pots, work for another 5 minutes after the water temperature reaches 95°C.
For other water boilers, egg cookers, milk warmers, feeding bottle heaters, cooking pans, cleaning boilers, sexual livestock feed cookers, sterilizers and glue boilers, the test is under the following conditions End: Appliances without a temperature controller, after the water temperature reaches 95C or the highest possible temperature (choose the lower one), then work for 15 minutes;
GB 4706.19—1999
一一一区For portable appliances with a temperature controller, the temperature controller operates for 15 minutes after the first operation; for fixed appliances with a temperature controller, the temperature controller operates for 30 minutes after the first operation, and the buzzer emits a continuous tone signal for 1 minute. , the intermittent sound gap is less than 5s. Appliances having a heating surface for heating liquids are tested with the container on the heating surface and with the container removed until a steady state is established.
Egg boilers, stew pots and yogurt makers with the ability to keep eggs warm should be operated until a stable state is established. Stew pots that require preheating in a dry state in the instructions for use can be preheated before the test begins. . The coffee machine is operated for the time required to brew the maximum amount of coffee specified in the instructions for use, and then the water is refilled into the container as quickly as possible to restart the coffee machine. Repeat this step until steady state is established. The steam pressure coffee machine works according to the instructions. Put the maximum amount of fresh coffee recommended by the manufacturer into the coffee filter. After the brewing is completed, stop for a period of time according to the instructions. If the instructions do not specify, the time is 1 minute, or the filter The time it takes to change the coffee is longer. The water container is filled with water during the stop time. Note 1: Unless otherwise specified in the instruction manual, one cup equals 100cm. A steam pressure coffee machine with a steam or hot water outlet that supplies steam or water immediately after each brewing process for a time specified by the manufacturer.
Note 2, steam enters a container filled with cold water. The steam pressure coffee machine works until a steady state is established. After the pressure cooker reaches the maximum cooking pressure, work for another 15 minutes. 11.8 Added:
If the connector of the appliance is equipped with a thermostat, there is no limit on the temperature rise of its pins. When the appliance is working at 1.15 times the rated power, the temperature rise of the motor, transformer, electronic circuit components and parts directly affected by them can exceed the limit value.
12 Empty Chapter
3 Leakage current and electrical strength at operating temperature 13
This chapter in GB4706.1-1998 applies. 14 Empty Chapter
15 Moisture Resistance
This chapter in GB4706.1-1998 is applicable except for the following content. 15.2 Added:
The test is performed after the connector is connected. When in doubt, a water overflow test should be carried out, and the angle of the appliance from the normal use position shall not exceed 5°C. A pot that can be filled with water from the spout should be placed on an inclined plate at an angle of 20° to the horizontal, with the spout facing upwards. If the water level mark can be seen clearly at the water filling position, pour 1% NaCI solution to the highest water level mark. Otherwise, water should be filled until the water in the pot overflows, and then as quickly as possible, add 15% of the NaCI solution equal to the rated capacity of the pot. % of water is poured into the pot. Cordless kettles are tested on a horizontal surface with and without the kettle on its base. If such a kettle can still be filled with water through the spout, after the test in which the kettle is not on its base, the kettle should be placed on its base again and the electrical strength test of 16.3 should be carried out again.
15.101 Appliances that are partially or completely immersed in water for cleaning should have adequate protection against the effects of immersion. Adequate protection measures should be taken to avoid the effects of flooding. | | tt | If there is no thermostat, work until it reaches a stable state. Then remove the connector or disconnect the power supply, and immediately immerse the sample completely in water between 10°C and 25°C; if the appliance is marked with a mark line for the maximum depth that can be immersed, immerse it to a point 5cm beyond the mark line. After 1 hour, take the sample out of the water, dry it and conduct the leakage current test in 16.2. Note: It should be noted that the insulation around the pins of the appliance input socket should be kept dry during the test. This test must be conducted more than four times, and then the 16.3 electrical strength test is performed, but the voltage is reduced to 1000V. After the fifth immersion test, the appliance with the largest leakage current must be disassembled and inspected. There should be no water marks on the insulation that would cause the creepage distance and electrical clearance to be lower than the values ??specified in 29.1.
Then, the remaining two appliances work in normal working condition for 240h. After the above period, remove the connector or turn off the power and repeat the initial test. The appliance shall withstand the electrical strength test of 16.3, but with the voltage reduced to 1000V.
During inspection, there should be no water marks on the insulation that would cause the creepage distance and electrical clearance to be lower than the values ??specified in 29.1. 15.102 The base of a cordless kettle shall be constructed so that the connecting means are not affected by water. Whether it is qualified or not is checked through the following test: place the base on a horizontal surface, pour 30 mL of 1% NaCl solution through a test tube with an inner diameter of 8 mm, and pour it from a height of 200 mm onto the connector within 2 seconds.
Then, conduct the electrical strength test on the base according to 16.3 (for reinforced insulation, the test voltage is reduced to 2500V)). 16 Leakage current and electrical strength
This chapter in GB4706.1-1998 applies. 17 Overload protection of transformers and related circuits This chapter in GB4706.1-1998 applies. 18 Durability
This chapter in GB4706.1-1998 is not applicable. 19 Abnormal operation
This chapter in GB4706.1-1998 is applicable except for the following content. 19.1 added:
For pots, the inspection of 19.101 is also required. 19.2 Added:
During the test, the instrument should be as close to the test corner wall as possible. The test is carried out with the appliance unloaded, with the lid open or closed, whichever is more unfavorable. Kettles are not subject to this test.
19.3 addition:
For kettles, test at 1.15 times rated input power. Pour enough water into the pot to submerge the heating element. If the heating element is outside the container, pour 10mm of water into the pot. Open or close the lid. Choose the less favorable one and repeat test 19.4. Increase:
Note: The kettle control device, which is treated as a circuit breaker, is considered inoperative.When operating at 15 times the rated power, the temperature rise of motors, transformers, electronic circuit components and parts directly affected by them can exceed the limit value.
12 Empty Chapter
3 Leakage current and electrical strength at operating temperature 13
This chapter in GB4706.1-1998 applies. 14 Empty Chapter
15 Moisture Resistance
This chapter in GB4706.1-1998 is applicable except for the following content. 15.2 Added:
The test is performed after the connector is connected. When in doubt, a water overflow test should be carried out, and the angle of the appliance from the normal use position shall not exceed 5°C. A pot that can be filled with water from the spout should be placed on an inclined plate at an angle of 20° to the horizontal, with the spout facing upwards. If the water level mark can be seen clearly at the water filling position, pour 1% NaCI solution to the highest water level mark. Otherwise, water should be filled until the water in the pot overflows, and then as quickly as possible, add 15% of the NaCI solution equal to the rated capacity of the pot. % of water is poured into the pot. Cordless kettles are tested on a horizontal surface with and without the kettle on its base. If such a kettle can still be filled with water through the spout, after the test in which the kettle is not on its base, the kettle should be placed on its base again and the electrical strength test of 16.3 should be carried out again.
15.101 Appliances that are partially or completely immersed in water for cleaning should be adequately protected against the effects of immersion. Adequate protection measures should be taken to avoid the effects of flooding. | | tt | If there is no thermostat, work until it reaches a stable state. Then remove the connector or disconnect the power supply, and immediately immerse the sample completely in water between 10°C and 25°C; if the appliance is marked with a mark line for the maximum depth that can be immersed, immerse it to a point 5cm beyond the mark line. After 1 hour, take the sample out of the water, dry it and conduct the leakage current test in 16.2. Note: It should be noted that the insulation around the pins of the appliance input socket should be kept dry during the test. This test must be conducted more than four times, and then the 16.3 electrical strength test is performed, but the voltage is reduced to 1000V. After the fifth immersion test, the appliance with the largest leakage current must be disassembled and inspected. There should be no water marks on the insulation that would cause the creepage distance and electrical clearance to be lower than the values ??specified in 29.1.
Then, the remaining two appliances work in normal working condition for 240h. After the above period, remove the connector or turn off the power and repeat the initial test. The appliance shall withstand the electrical strength test of 16.3, but with the voltage reduced to 1000V.
During inspection, there should be no water marks on the insulation that would cause the creepage distance and electrical clearance to be lower than the values ??specified in 29.1. 15.102 The base of a cordless kettle shall be constructed so that the connecting means are not affected by water. Whether it is qualified or not is checked through the following test: place the base on a horizontal surface, pour 30 mL of 1% NaCl solution through a test tube with an inner diameter of 8 mm, and pour it from a height of 200 mm onto the connector within 2 seconds.
Then, conduct the electrical strength test on the base according to 16.3 (for reinforced insulation, the test voltage is reduced to 2500V)). 16 Leakage current and electrical strength
This chapter in GB4706.1-1998 applies. 17 Overload protection of transformers and related circuits This chapter in GB4706.1-1998 applies. 18 Durability
This chapter in GB4706.1-1998 is not applicable. 19 Abnormal operation
This chapter in GB4706.1-1998 is applicable except for the following content. 19.1 added:
For pots, the inspection of 19.101 is also required. 19.2 Addition:
During the test, the instrument should be as close to the test corner wall as possible. The test is conducted with the appliance unloaded, with the lid open or closed, whichever is more unfavorable. Kettles are not subject to this test.
19.3 addition:
For kettles, test at 1.15 times the rated input power. Pour enough water into the pot to submerge the heating element. If the heating element is outside the container, pour 10mm of water into the pot. Open or close the lid. Choose whichever is more unfavorable and repeat test 19.4. Increase:
Note: The kettle control device, which is treated as a circuit breaker, is considered inoperative.When operating at 15 times the rated power, the temperature rise of motors, transformers, electronic circuit components and parts directly affected by them can exceed the limit value.
12 Empty Chapter
3 Leakage current and electrical strength at operating temperature 13
This chapter in GB4706.1-1998 applies. 14 Empty Chapter
15 Moisture Resistance
This chapter in GB4706.1-1998 is applicable except for the following content. 15.2 Added:
The test is performed after the connector is connected. When in doubt, a water overflow test should be carried out, and the angle of the appliance from the normal use position shall not exceed 5°C. A pot that can be filled with water from the spout should be placed on an inclined plate at an angle of 20° to the horizontal, with the spout facing upwards. If the water level mark can be seen clearly at the water filling position, pour 1% NaCI solution to the highest water level mark. Otherwise, water should be filled until the water in the pot overflows, and then as quickly as possible, add 15% of the NaCI solution equal to the rated capacity of the pot. % of water is poured into the pot. Cordless kettles are tested on a horizontal surface with and without the kettle on its base. If such a kettle can still be filled with water through the spout, after the test in which the kettle is not on its base, the kettle should be placed on its base again and the electrical strength test of 16.3 should be carried out again.
15.101 Appliances that are partially or completely immersed in water for cleaning should be adequately protected against the effects of immersion. Adequate protection measures should be taken to avoid the effects of flooding. | | tt | If there is no thermostat, work until it reaches a stable state. Then remove the connector or disconnect the power supply, and immediately immerse the sample completely in water between 10°C and 25°C; if the appliance is marked with a mark line for the maximum depth that can be immersed, immerse it to a point 5cm beyond the mark line. After 1 hour, take the sample out of the water, dry it and conduct the leakage current test in 16.2. Note: It should
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