GB 4706.33-1996 Safety of household and similar electrical appliances - Special requirements for commercial electric deep fryers
Some standard content:
GB4706.33—1996 | Year Edition) and Revision No. 1 (1990). This standard should be used in conjunction with GB4706.1-92 "Safety Communication Requirements for Household and Similar Electrical Appliances".
The safety standards for household and similar electrical appliances consist of two parts. The first part is the general requirements, and the second part is the special safety requirements for the product.
The part of this standard that says "applicable" means that the corresponding provisions in GB4706.1--92 are applicable to this standard; the part of this standard that says "replace" or "modify" should be The provisions in this standard shall prevail; the part marked "added" in this standard means that in addition to complying with the corresponding provisions of GB4706.1-92, it must also comply with the added provisions in this standard. This standard is proposed by the Industrial Department of the Ministry of Domestic Trade of the People's Republic of China. This standard is jointly administered by the National Commercial Machinery Standardization Technical Committee and the National Household Appliances Standardization Technical Committee. This standard was drafted by: National Catering Service Machinery Quality Supervision and Inspection Center. The main drafters of this standard: Wang Shujing, Xia Xiaoli GB4706.331996
IEC Foreword
1) Participated by all national committees with special concerns about this The technical committees of the IEC formulate formal resolutions or agreements on technical issues, expressing as closely as possible an international consensus on the issues involved, 2) these resolutions or agreements are in the form of recommendations for international use, and are hereby meaning accepted by all national committees. 3) In order to promote international unification, IEC hopes that the contents of IEC standards should be adopted as their national regulations to the extent permitted by their domestic circumstances. Any differences between the standards recommended by IEC and the corresponding national standards should be clearly stated in the national standards as much as possible. GB4706.33—1996
IEC Preface
This publication is produced by IEC Technical Committee 61 "Safety of Household and Similar Electrical Appliances" Section 61E "Safety of Commercial Electrical Food Processing and Service Equipment" Developed by committee. It constitutes the second edition of the IEC 335-2-37 publication and replaces the 1982 first edition. The text of this second edition is based on the first edition and the following documents determined by June Law
61E(CO)21
Further information can be found in the voting report shown in the table above. Voting Report
61E(CO)25
This Part II is intended for use in conjunction with the IEC335-1 publication. It is based on the second edition (1976), second printing (1983), including revisions No. 1 (1977), No. 2 (1979) and No. 3 (1982), and is based on the revisions No. 4 (1984), No. 5 (1986) and No. 6 (1988) were enacted. This should be taken into account in future new versions of IEC335-1 publications or their modifications. This Part II supplements or modifies the corresponding provisions in the IEC335-1 publication in order to convert this publication into the IEC standard: Safety Requirements for Commercial Electric Deep Fryers (Second Edition). If individual provisions of Part One are not mentioned in Part Two, these provisions shall still apply as long as they are reasonable. When the description of this second edition is "added", "modified" or "replaced", the relevant requirements, test specifications or instructions in Part One should be modified accordingly. The following differences exist in some countries:
- This requirement does not apply to electric heating elements cleaned by pyrolysis (Article 22.105); ordinary appliances are not allowed (Article 6.1);
is only allowed X-connection of power supply cords (clause 25.4); stipulates lower limits for leakage currents (clauses 13.2 and 16.2). In this publication:
1) Use the following typographic fonts:
- Requirement itself: Roman;
Test specification: Italic;
- Notes: Small No. Roman.
2) The added clauses or charts in the first part should be numbered starting from 101; the added appendices are marked with letters AA, BB, etc. The following IEC publications are cited within this standard:
Publication No. 529 (1976): Classification of the degree of protection provided by enclosures. 1 Scope
National Standard of the People's Republic of China
Safety of household and similar electrical appliances
Special requirements for commercial electric deep fryers
Safety of household and similar electrical appliancesParticular requirements for commercial electric deep fat fryers
This chapter in GB4706.1-92 is applicable except for the following content. 1.1 This article is replaced by the following:
This standard applies to commercial electric deep fryers not for general household use. The electrical parts of appliances that utilize other forms of energy are also within the scope of this standard. This standard does not apply to:
Pressure fryers:
Continuous operation fryers for mass production of food; GB4706.33-1996
idtIEC335-2-37:1990|| tt||Appliances used in places with special conditions such as corrosive or explosive gases (dust, steam or gas). Additional requirements may be required for appliances used on vehicles, vessels or aircraft. Special requirements may be required for appliances used in tropical countries. Additional requirements set by the health, water supply and labor protection authorities of many countries should also be taken into consideration. 2 Definitions
This chapter in GB4706.1-92 is applicable except for the following content. 2.2.4 The following content is added to this article:
The rated input power is the sum of the rated input powers of all individual components in the appliance that can work simultaneously; among several such combinations that may exist, the maximum input power is provided combination to determine the rated input power. 2.2.19 The following content is added to this article:
Class I used in this standard should be understood as Class I structural components. 2.2.20 The following content is added to this article:
Category I used in this standard should be understood as subcategory structural components. 2.2.29 This article is replaced by the following:
The full heat release condition means that the appliance works under the following conditions: Fill the appliance with oil to the lowest marked oil level. Set the thermostat to its highest setting. If a lid is provided, open or remove the lid unless the manufacturer's instructions indicate that the appliance is designed to operate with the lid closed.
2.2.30 This article is replaced by the following
Normal load means that when the appliance is working under sufficient heat dissipation conditions, the motor installed in the appliance operates in the country of manufacture in the required manner. The Bureau of Technical Supervision approved the implementation on November 01, 1996 on November 01, 1997 | Add the following terms:
2.2.101 Deep fryer refers to an appliance equipped with one or more containers, and food is immersed in the frying oil of the container for cooking. 2.2.102 Liquid level mark refers to the minimum or maximum liquid level mark marked on the appliance for correct operation. 3 General requirements
The contents of this chapter in GB4706.1-92 are applicable. 4 General instructions in testing
This chapter in GB4706.1-92 is applicable except for the following content. The following clauses are added to this chapter:
4.101 New vegetable oil should be used at the beginning of the test, and new oil should be added if necessary to maintain a constant liquid level. 4.102 For combined appliances, if the input power of the heating part is increased to If the voltage required for 1.15 times the rated input power exceeds 3V when increasing the motor voltage to 1.06 times the rated voltage, the motor should use a separate power supply. 4.103 Appliances assembled with other appliances or equipped with other appliances shall be tested in accordance with the requirements of this standard. Other appliances should work simultaneously in accordance with the requirements of relevant standards.
4.104 For appliances that use energy sources other than electricity, when testing the electrical components, the influence of the non-electrical components of the appliance must be considered. 5 Ratings
The contents of this chapter in GB4706.1-92 are applicable. 6 Classification
This chapter in GB4706.192 is applicable except for the following content. 6.1 This article adds the following content:
Adds the following content to item 2:
Anti-spray appliances (IPX5 is classified according to IEC Publication 529: Degree of protection provided by the enclosure). The following content is added to this article:
(3) Classification according to the degree of protection against temperature rise due to installation conditions: appliances installed in isolation;
Appliances installed in other appliance units, currently for preparation There are no additional requirements for appliances installed in sets of other appliances. 7 Marks
This chapter in GB4706.1--92 is applicable except for the following content. 7.1 The following content is added to this article:
For appliances connected to the water source, kPa is used to express the water pressure or pressure range, unless otherwise specified in the instructions. 7.2 This article adds the following content:
Add the following two items to the symbol table:
kPa.
IPX5
7.12 This article adds the following content: | |tt||Kilopascal.
Anti-spray structure.
The appliance should be accompanied by an instruction manual detailing the special precautions required during installation. Operating procedures and user maintenance, such as cleaning, instructions should also be provided.
GB4706.33-1996
In particular, instructions should include a warning about using old oils, emphasizing that doing so will lower the flash point and make over-boiling more likely. Instructions should also include a warning about the risk of fire if the oil level is below the minimum level. Attention should also be paid to the effects of excessive boiling caused by overly wet food and overloading at one time. For appliances that are equipped with appliance sockets and need to be partially or fully immersed in water when cleaning, the instructions should indicate that the connector must be removed before cleaning the appliance, and The appliance socket must be dried before use again. For non-fixed appliances and appliances with detachable electrical parts that do not require partial or total immersion in water during cleaning, the instructions should specify that such appliances or parts must not be immersed in water. For appliances permanently connected to fixed wiring, the instructions should provide information on measures to be taken to protect against leakage currents during installation. If the appliance is not constructed to be spray-proof, clear and detailed instructions should be provided to the user along with the appliance. The instructions should indicate that this appliance must not be cleaned with a water spray hose.
This chapter adds the following clauses:
7.101 The minimum and maximum oil levels should be marked on the appliance. 7.102 Appliances or their removable electrical parts that are intended to be partially immersed in water during cleaning should be marked with a immersion line clearly indicating the maximum depth of immersion in water, together with the following warning: Do not immerse in water beyond this line.
If the appliance has any seams or joints such that the appliance or parts thereof cannot be At least 5cm down. 8 Protection against electric shock
The contents of this chapter in GB4706.1-92 are applicable. 9 Start-up of electric appliances
The contents of this chapter in GB4706.1-92 are applicable. 10 Input power and current
This chapter in GB4706.1-92 except for the following contents, All applicable. 10.1 The following content is added to this article:
The total input power of multiple units can be determined by measuring the input power of each unit separately. The rated input power is the sum of the rated input power of all individual components in the appliance that can work simultaneously. ; When several such combinations are possible, use the combination that provides the maximum input power to determine the rated input power. 11 Fever
This chapter in GB4706.1-92 is applicable except for the following content. 11.2 The following content is added to this article:
Appliances fixed to the floor shall be installed in accordance with the manufacturer's instructions. If no instructions are provided, GB4706.1-92 shall apply. 11.3 The following content is added to this article:
The oil temperature is measured at 25mm below the oil level in the center of the container. 11.4 This article is replaced by the following:
The appliance operates under sufficient heat dissipation conditions so that the total input power of the appliance is 1.15 times the rated input power. If it is not possible to switch on all heating elements at the same time, each combination shall be tested, as permitted by the switch configuration, with the highest load possible for each switch configuration.
If the appliance is provided with a control device that limits the total input power, the test shall be carried out with the combination of heating elements selected by the control device to impose the most severe conditions.
11.7 This article is replaced by the following:
GB4706.33—1996
Let the appliance work continuously until it reaches a stable state. 11.8 This article adds the following content;
The maximum temperature of oil shall not exceed 200°C. www.bzxz.net
11.10 The content of this article is modified as follows:
Replace table note ① with the following content:
P=8000
12 Appliances with electric heating elements are under overload conditions The contents of this chapter in GB4706.1-92 are applicable to the next work. 13 Electrical insulation and leakage current at operating temperature This chapter in GB4706.1-92 is applicable except for the following content. 13.2 The content of this article is modified as follows:
Replace the specified value of leakage current of fixed Class 1 appliances with the following content: ·Appliances connected by cords and plugs
·Other appliances||tt| |The following content is added to this article:
The maximum limit of 1mA/kW is 10mA.
1mA/kW has no maximum limit.
When the appliance is equipped with Class I or Class III structural components, the leakage current of these components shall not exceed the values ??given in GB4706.1-92. 14 Suppression of radio and television interference
The contents of this chapter in GB4706.1-92 are applicable. 15 Waterproof
This chapter in GB4706.1-92 is applicable except for the following content: 15.2 This article adds the following content:
Ordinary and drip-proof appliances must also withstand the use of GB4706 .1-92 Splash test with the device shown in Figure 10. Spray-proof appliances are subject to the tests described in IEC Publication No. 529 (IPX5). The content of this article is modified as follows:
Replace the test specifications for watertight appliances with the following content: Appliances or detachable electrical components that are partially or completely immersed in water during cleaning should withstand the test of Article 15.102. Except for fixed appliances or detachable electrical components, appliances that are not marked with a immersion line or have no warning about partial or complete immersion in water in the instructions are considered appliances prepared to be fully immersed in water for cleaning. 15.3 The following content is added to this article:
These appliances are considered to be capable of spilling liquids during normal use. See 22.103.
15.4 The content of this article is modified as follows:
Replace the specified time with the following content:
The time the appliance is placed in the humid room (box) is 24 hours. The following content is added to this article:
If it is not possible to put the entire appliance into a humid room (box), parts with electrical components should be tested separately and pay attention to what happens inside the appliance.
The following provisions are added to this chapter:
15.101 Appliances equipped with water switches for filling or cleaning shall be designed so that water flowing out of the switch cannot contact live parts. Compliance is determined by the following test: GB4706.33—1996
The appliance is connected to a water source that meets the maximum water supply pressure indicated by the manufacturer. Tiltable and removable parts, including covers, are tilted or placed in the most unfavorable position. The rotatable outlet tube of the water switch is placed in such a position that water flows towards those components that will produce the most adverse results. Open all devices for controlling water inflow for 1 minute. After this treatment, the appliance should immediately undergo the medium strength test in Chapter 16. 15.102 Appliances or detachable electrical components that are intended to be partially or completely immersed in water for cleaning should be adequately protected from the effects of water immersion. Qualification is determined by the following test
The sample operates under sufficient heat dissipation conditions. The power supply voltage should be such that the input power of the appliance is 1.15 times the rated input power until a stable state is reached.
Then disconnect the connector or turn off the power, immediately empty the sample, and then completely immerse it in water with a temperature between 10°C and 25°C, unless it is marked with a immersion line, in which case put it Dip to the indicated depth. After soaking in water for 1 hour, take the sample out of the water and dry it, taking care to ensure that all moisture is removed from the insulator near the input pin of the appliance. The leakage current is then measured on the assembled appliance as described in 16.2. Leakage current shall not exceed the value specified in 16.2. After the above processing and leakage current measurement, the sample should be in accordance with 16.Article 4 stipulates that it can withstand the electrical strength test, but the test voltage should be reduced to 1000V.
Then the sample is worked as above for 10d (240h). During this period, the sample can be allowed to cool 5 times at fixed intervals, approximately to room temperature.
After this, disconnect the connector of the sample or turn off the power and immediately empty the sample and immerse it in water for 1 hour again, as above. The sample is then allowed to dry, and the leakage current is measured according to the method described in 16.2. The leakage current shall not exceed the value specified in 16.2. The sample shall then undergo an electrical strength test in accordance with the preceding provisions. Visual inspection shall show that water has not obviously entered the appliance. When inspecting appliances for the presence of moisture, special attention should be paid to parts containing electrical components. 16 Insulation resistance and electrical strength
This chapter in GB4706.1-92 is applicable except for the following content. 16.2 The content of this article is modified as follows:
Replace the specified value of leakage current of fixed Class 1 appliances with the following content: ·Appliances connected by cords and plugs
·Other appliances||tt| |This article adds the following content:
: 2mA/kW maximum limit 10mA.
2mA/kW has no maximum limit.
For appliances used with connectors and partially or fully immersed in water during cleaning, the appliance socket should be dried before applying the test voltage, for example with absorbent paper, otherwise the appliance may not withstand this test. 17 Overload protection
The contents of this chapter in GB4706.1-92 are applicable. 18 Durability
This chapter in GB4706.1-92 is applicable except for the following contents. 18.1 This article adds the following content:
The test is only performed on the electric components of the appliance. 18.2 The content of this article is modified as follows:
Replace the test description paragraph under the table with the following content: The electric components of the appliance operate under normal load and 0.9 times the rated voltage for 48 hours. 19 Abnormal operation
GB4706.33-1996
GB4706.1--92 This chapter except the following content is applicable. 19.1 The content of this article is modified as follows:
Replace the applicable tests with the following content: ·For all appliances, test according to 19.4, 19.101 and 19.102. ·Appliances with electric motors, if applicable, are tested in accordance with 19.6, 19.7 to 19.10. 19.4 This article is replaced by the following:
The appliance is tested under the conditions specified in Chapter 11, but the voltage should be such that the input power is 1.24 times the rated input power, and the temperature used to limit the temperature during the test in Chapter 11 Any controller is shorted. If the appliance is equipped with more than one control unit, these controls shall be short-circuited in sequence. If the applicable IEC standard covers the conditions present in the appliance, a contactor that complies with the relevant standard shall not open or short-circuit. However, locking in the "on" position the main contacts of a contactor used in normal use to turn on and off a heating element shall be considered a fault condition unless the appliance is equipped with at least two sets of contacts connected in series . For example, two contactors that work independently of each other, or one contactor with two independent sets of main contacts operated by two independent armatures. 19.11 The following content is added to this article:
When measured according to Article 11.3, the oil temperature shall not exceed 230°C. This chapter adds the following clauses:
19.101 Appliances are tested under the conditions specified in Chapter 11. The test is carried out in the following two parts: a) Use less oil than the minimum amount used to obtain the maximum temperature of the oil. The test starts from the cold state, the thermostat is adjusted to the maximum operating temperature, the lid is opened, removed or closed, Whichever is the worst, unless the appliance is designed not to operate without the lid closed. When measuring the oil temperature at any point not less than 5mm from any surface, the oil temperature shall not exceed 230°C. b) Return the appliance to room temperature and refill it with oil, then drain the oil within 1 hour, but do not drain it. The test is started with the thermostat set to the maximum operating temperature and the lid opened, removed or closed, whichever is the most unfavorable condition, unless the appliance is so designed that it will not operate without the lid closed. During the test, no oil other than the oil on the components shall be allowed to ignite, and no flame shall spread to other parts of the device. 20 Stability and mechanical hazards
This chapter in GB4706.1-92 except for the following Except for the content, it is applicable. 20.1 This article adds the following:
Removable parts and loose parts, such as baskets and lids, should be placed in the most unfavorable position. 21 Mechanical strength
The contents of this chapter in GB4706.1-92 are applicable. 22 Structure
This chapter in GB4706.1--92 is applicable except for the following content. 22.1 This clause is replaced by the following:
The appliance shall be of Class 1 construction.
Conformity is determined by inspection and relevant tests. This article adds the following clause:
22.101 Appliances shall be protected so that moisture and grease do not accumulate to an extent that affects the values ??of creepage distances and clearances. Compliance is determined by inspection.
22.102 Thermal circuit breaker shall be of non-automatic reset and automatic tripping type.101 appliances are tested under the conditions specified in Chapter 11. The test is carried out in the following two parts: a) Use less oil than the minimum amount used to obtain the maximum temperature of the oil. The test starts from the cold state, the thermostat is adjusted to the maximum operating temperature, the lid is opened, removed or closed, Whichever is the worst, unless the appliance is designed not to operate without the lid closed. When measuring the oil temperature at any point not less than 5mm from any surface, the oil temperature shall not exceed 230°C. b) Return the appliance to room temperature and refill it with oil, then drain the oil within 1 hour, but do not drain it. When starting the test, the thermostat is set to the maximum operating temperature and the lid is opened, removed or closed, whichever is the most unfavorable condition, unless the appliance is so designed that it will not operate without the lid closed. During the test, no oil other than the oil on the components shall be allowed to ignite, and no flame shall spread to other parts of the device. 20 Stability and mechanical hazards
This chapter in GB4706.1-92 except for the following Except for the content, it is applicable. 20.1 This article adds the following:
Removable parts and loose parts, such as baskets and lids, should be placed in the most unfavorable position. 21 Mechanical strength
The contents of this chapter in GB4706.1-92 are applicable. 22 Structure
This chapter in GB4706.1--92 is applicable except for the following content. 22.1 This clause is replaced by the following:
The appliance shall be of Class 1 construction.
Conformity is determined by inspection and relevant tests. This article adds the following clause:
22.101 Appliances shall be protected so that moisture and grease do not accumulate to an extent that affects the values ??of creepage distances and clearances. Compliance is determined by inspection.
22.102 Thermal circuit breaker shall be of non-automatic reset and automatic tripping type.101 appliances are tested under the conditions specified in Chapter 11. The test is carried out in the following two parts: a) Use less oil than the minimum amount used to obtain the maximum temperature of the oil. The test starts from the cold state, the thermostat is adjusted to the maximum operating temperature, the lid is opened, removed or closed, Whichever is the worst, unless the appliance is designed not to operate without the lid closed. When measuring the oil temperature at any point not less than 5mm from any surface, the oil temperature shall not exceed 230°C. b) Return the appliance to room temperature and refill it with oil, then drain the oil within 1 hour, but do not drain it. When starting the test, the thermostat is set to the maximum operating temperature and the lid is opened, removed or closed, whichever is the most unfavorable condition, unless the appliance is so designed that it will not operate without the lid closed. During the test, no oil other than the oil on the components shall be allowed to ignite, and no flame shall spread to other parts of the device. 20 Stability and mechanical hazards
This chapter in GB4706.1-92 except for the following Except for the content, it is applicable. 20.1 This article adds the following:
Removable parts and loose parts, such as baskets and lids, should be placed in the most unfavorable position. 21 Mechanical strength
The contents of this chapter in GB4706.1-92 are applicable. 22 Structure
This chapter in GB4706.1--92 is applicable except for the following content. 22.1 This clause is replaced by the following:
The appliance shall be of Class 1 construction.
Conformity is determined by inspection and relevant tests. This article adds the following clause:
22.101 Appliances shall be protected so that moisture and grease do not accumulate to an extent that affects the values ??of creepage distances and clearances. Compliance is determined by inspection.
22.102 Thermal circuit breaker shall be of non-automatic reset and automatic tripping type.
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