GB 4706.3-1986 Safety of household and similar electrical appliances Special requirements for food mixers and similar electrical appliances
Some standard content:
National Standards of the People's Republic of China
Safety of household and similar electrical appliances
Special requirements for food grinders and similar electrical appliances
Safety of household and similar electrical appliancesParticular requirements for food blenders and similar electrical appliancesUDC621.3:614
.8:64
GB4706.3-86
This standard applies to food blenders in the safety of household and similar electrical appliances This standard should be used in conjunction with GB4706.1-84 "General safety requirements for household and similar electrical appliances". The parts of this standard that say "applicable" mean that the corresponding clauses, clauses and clauses in GB4706.1-84 are applicable to this standard. The parts of this standard that say "replace" should be replaced by the provisions of this standard. shall prevail. The part marked "added" in this standard means that in addition to complying with the corresponding provisions of GB4706.1-84, it must also comply with the additional provisions in this standard. 1 Scope
This chapter in GB4706.1-84 is applicable except for the following content. 1.1 This article is replaced by the following:
This standard applies to food choppers and similar electrical appliances and corresponding accessories (hereinafter referred to as "mashers"), examples of which are as follows: a. Intrusive grinding
Food masher;
b.
c. Fruit and vegetable masher;
d. Baby food blender;
e. Multi-purpose blender.
Pulsers that are not intended for general household use but are still dangerous when used in public places also fall within the scope of this standard. This standard does not take into account some special hazards that exist in nurseries and living places where the elderly, young, sick and disabled are left unattended. There are additional requirements for this.
This standard does not apply to:
a. Blenders specially designed for industry
b. Coffee grinders and coffee grinders;
c. Agitators used under special corrosive and explosive conditions (such as dust, steam or flammable gases). Multi-purpose blenders used with accessories, which must comply with relevant standards including accessories. Crushers used on vehicles, ships, and aircraft also need to have additional requirements. Special requirements also need to be developed for blenders used in tropical areas. Health and labor protection should comply with the relevant requirements stipulated by the national health department and labor protection department. 2 Terminology
This chapter in GB4706.1-84 is applicable except for the following content. The five items 2.2.16~2.2.17, 2.2.26, 2.2.28~2.2.29 are not applicable. Published by the National Bureau of Standards on March 27, 1986
Implemented on 1986-10-01
2.2.30 This article is replaced by the following:
GB4706.3-86||tt| |Normal load: refers to the load of the grinder under the following specified working conditions, or for a grinder marked with rated input power, the load reaches the rated input power at rated voltage, whichever is greater. If during the test in Chapter 10, the measured input power is different from the rated input power, and the deviation is not greater than the value in Table 1, it is not considered that the load required to reach the rated input power at the rated voltage is large. Table 1
Rated power input
≤33.3
>33.3~150
>150~300
>300
W| |tt||Partial
+10W
+30%
+45W
+15%
When the masher is in the normal use position, use The rated input load can be obtained by applying a constant torque. Difference
The grinder with a timer is set to work at the maximum time. At this time, the set time of the timer can represent a cycle. Unless otherwise specified, the speed control shall be adjusted to the position indicated in the instruction manual. If there is no instruction manual, the speed control shall be adjusted to the most unfavorable position. Food masher, operate according to the following prescribed procedures. According to the weight ratio, two parts of lumpy carrot pieces not larger than 15mm on each side and three parts of water are filled into the container until two-thirds of the container is filled, or to the marked place. upper limit. For a blender without a container, the cylindrical test container used has a volume of about 1L and an inner diameter of about 11cm. For hand-held blenders, bench-top blenders that need to be kept powered by hand, the test program consists of five cycles, with each cycle operating for 1 minute and stopping for 1 minute during each week. For other bench-top blenders, the test program consists of ten Composed of cycles, each cycle operates for 3 minutes and stops for 1 minute each week. At each stop, replace the mixture with a new one. The multi-speed blender was tested at the highest and lowest speeds, with normal load at high speed and only water as load at low speed.
The mixture of carrots and water was prepared 24h before the test. Be careful not to cause blockage accidents during the test. The fruit and vegetable chopper operates for five cycles. The time of each cycle is to chop 0.5kg carrots into appropriate small pieces, and it stops for 2 minutes every week.
If there is a pusher, push the carrot with a force of 5N. Carrots were soaked in water for about 24 hours before the start of the test. The baby food grinder operates for 3 cycles, processing 85g of small pieces of beef in each cycle, grinding for 15 seconds, stopping for 1 minute, and loading 85g of new beef every week until 255g of beef is processed. The grinders not mentioned above should be operated as follows: a. Short-term or intermittent operation for 5 minutes; b. Continuous operation for 30 minutes.
For blenders marked with a longer time, the longer time shall apply in this case. Operation of the masher under load requires rated input power at rated voltage, or operation at the load specified in the instructions, whichever is greater.
The five items 2.2.32, 2.2.39~2.2.41 and 2.2.46 are not applicable. The following clauses are added to this chapter:
2.2.101 Immersion blender: refers to an appliance driven by a motor to drive high-speed rotating cutters to crush soaked food or stir liquids. GB4706.3-86 | 3 General requirements
This chapter in GB4706.1-84 applies.
4
General instructions for testing
This chapter in GB4706.1-84 is applicable except for the following content. 4.7 This clause is replaced by the following:
For mashers with several optional accessories, the accessory that produces the most unfavorable test results should be selected for testing. Articles 4.8, 4.10 and 4.12 are not applicable. The following clauses are added to this chapter:
4.101 Except for the pulverizer designed to be fixedly installed in normal use, the others are tested as portable pulverizers. Hand-held mashers shall be tested in accordance with the tests specified additionally for this type of mashers. 4.102 If braking is used as the load of the pulverizer, care should be taken to avoid imbalance during the relevant tests. 5 Ratings
This chapter in GB4706.1-84 is replaced by the following content. The masher is rated for 220V.
Determine eligibility by inspecting the flag. | |tt | tt||b. Class II grinder,
c. Class II grinder.
6.2 According to the degree of waterproofing, it is divided into:
a. Ordinary blender;
b. Non-ordinary blender:
IP×1 drip-proof type Blender
IP×4 splash-proof type masher.
Note: The classification number does not reflect the safety level of the blender, only the safety method. 7 Marks
This chapter in GB4706.1-84 is applicable except for the following content. 7.1 This article adds the following content to item k.:
L gear speed.
If the masher is shipped with replaceable accessories, the markings for rated input power, rated operating time and speed setting can be optional, but if the masher is already marked, the rated input power The most unfavorable attachment in the instructions for the masher should be used. Note ① of this article is replaced by the following:
If the load is less than the normal load, the corresponding rated working time should be marked. 7.3 This article does not apply.
7.14 Paragraphs 5 and 6 of this Article do not apply. This chapter adds the following provisions:
GB4706.3--86
7.101 The blender should come with instructions that include precautions for safe operation, cleaning and maintenance. 7.101.1 For pulverizers with replaceable accessories, the operating time and speed setting of the accessories should be specified in the accompanying instructions (unless these instructions are marked on the pulverizer). 7.101.2 Additional devices sold separately should provide the necessary information along with the instructions for use (unless this information is included in the instructions for the blender).
8 Protection against electric shock
This chapter in GB4706.1-84 is applicable except for the following content. 8.2 This clause does not apply.
9 Start-up of electric appliances
This chapter in GB4706.1-84 is applicable except for the following content. 9.1 Paragraph 2 of this Article does not apply.
Add the following content after paragraph 4 of this article:
The grinder should be started at the lowest control speed recommended in the manufacturer's instructions, and under normal load conditions and at any operating mode.
9.2 Add the following content to this article:
During the test process of Articles 9.1 and 9.2, care should be taken not to cause blocking accidents. 10 Input power and current
This chapter in GB4706.1-84 is applicable except for the following content. 10.1 This article is replaced by the following:
The input power of the grinder should not be greater than the deviation shown in Table 2 below under rated voltage and normal operating temperature. Table 2
Rated input power W
<33.3
>33.3~150
>150~300
>300
passed the test The input power of the grinder is used to determine whether it is qualified. Partial
+10W
+30%
+45W
+15%
Poor
When testing the input power, stir The crusher should be under rated voltage conditions and under normal load, and wait until the input power is stable before proceeding. If the motor load changes throughout the working cycle, the input power should be measured using the watt-hour meter method and determined by the average value of the input power over a representative period.
Note: The input power of the grinder does not limit the negative deviation. 10.3 This article does not apply.
11 Fever
This chapter in GB4706.1-84 is applicable except for the following content. 11.1 The following content is added to this article:
GB4706.3-86
The multi-purpose blender and its additional devices shall be tested according to the most unfavorable technical requirements given in the manufacturer's instructions. The operating time, working cycle and speed setting are as specified in Section 2.2.30. 11.2 This article is replaced by the following:
Hand-held blenders should be suspended in still air in their normal use position. The tabletop blender is placed or fixed on a plywood board about 20mm thick and coated with matte black paint and supported by a horizontal bracket. Articles 11.4 and 11.6 are not applicable.
12 This chapter in GB4706.1-84 does not apply to electrical appliances with electric heating elements operating under overload conditions. 13 Electrical insulation and leakage current at operating temperature This chapter in GB4706.184 is applicable except for the following content. 13.1 This article is replaced by the following:
At the operating temperature, the masher should have good insulation properties, and the leakage current in normal use should meet the standard requirements. Compliance is determined by the tests specified in Clause 13.2. The test is carried out when the voltage applied to the masher is equal to 1.06 times the rated voltage. 13.2.2 This paragraph is replaced by the following:
The test circuit for leakage current is as follows: It belongs to Class II crusher, and it is carried out according to the circuit of Figure 4 in GB4706.1-84. If it does not belong to Class II crusher, proceed according to the circuit in Figure 5 of GB4706.1-84. The total resistance of the test circuit is 1750±2502, and a capacitor is connected in parallel to give the circuit a time constant of 225±15μs. Measuring instruments should have an accuracy of at least 5% in the frequency range of 20 to 5000Hz. When the total resistance in the circuit is less than 1600Q and the measured leakage current exceeds 5mA, the reading is reduced by 5%.
The specific circuit for testing leakage current is given in A.11 of this appendix. Test using alternating current. No testing is required for blenders suitable for direct current operation only. The leakage current of the grinder needs to be measured using the switch shown in Figures 4 and 5 in position 1 and position 2 respectively. 13.2.3 This paragraph is replaced by the following:
After the grinder operates for the time specified in Article 11.7, the leakage current shall not exceed the following values: a. To easily accessible metal parts or metal foil: Portable Class I - 0.75mA;
Class II - 0.25mA;
Class III - 0.5mA,
b. For metal accessories of Class II mashers that are separated from live parts by basic insulation only, the leakage current should be classified according to the waterproof level of the mashers:
Ordinary type - 5.0mA; ||tt| |Extraordinary type - 3.5mA.
If the blender is equipped with one or more capacitors and is equipped with a single-pole switch, place the switch in the open position and repeat the measurement.
If the grinder is not powered by an isolation transformer during measurement, the grinder must be insulated from the earth. For blenders equipped with a thermal controller, the leakage current measurement shall be performed during the heating test, immediately before the thermal controller cuts off the circuit. 14 Suppression of radio interference and television interference This chapter in GB4706.1-84 applies.
15 waterproof
GB4706.3-86
This chapter in GB4706.1-84 is applicable except for the following content. 15.1 The "IP×3 shower-proof type and "IP×8 submersible electrical appliances" in paragraph 1 of this article and paragraph 4 are not applicable. 15.2 The contents of b. and d. of this article are not applicable.
15.2. 1 Paragraph 2 of this paragraph does not apply.
15.2.2 and 15.2.3 do not apply.
15.3 This paragraph is replaced by the following:
Liquid will spill during normal use. When designing the structure of the crusher, it should be considered that the spilled liquid will not affect the electrical insulation. Check whether it is qualified through the following test. For the crusher with the liquid container above the motor, use water containing about 1% sodium chloride. Completely fill the container, and then evenly pour water equal to 15% of the container capacity or 0.25kg (whichever is larger) into the container within 1 minute, so that the blender is in working condition or powered off, choose The most severe one.
For a blender whose liquid container is not located above the motor, fill the container with water containing about 1% sodium chloride and run the blender at the highest speed for 5 minutes. At this time, the container remains The water level must produce the maximum amount of splashing water. The electrical strength test shall be carried out in accordance with the provisions of Article 16.4. Flashover and breakdown shall not occur during the test. 16. Leakage current, insulation resistance and electrical strength in this chapter of GB4706.1-84. Except for the following content, all are applicable. 16.1 The sentence "Electric heating appliances shall be determined through the tests of Articles 16.2 and 16.4" in paragraph 2 of this article does not apply. 17 Overload protection
GB4706.1-84. This chapter applies.
18 Durability
This chapter in GB4706.1-84 applies except for the following. 18.1 The last paragraph of this article does not apply. This article adds the following content:
The grinder is loaded under the following conditions: The food grinder is operated under normal load to obtain the input power of fruits and vegetables determined during the test in Chapter 10. The grinder and grinder are operated under no load. If the grinder has a series motor, the input voltage should be the voltage at which the grinder operates at rated voltage and normal load. The multi-purpose grinder is equipped with accessories that require the highest input power and operates for 24 hours at each specified voltage. Other accessories must also be installed for testing. The operating time of each accessory is the same, and the total operating time under the specified voltage is: 24h. Mixers with different speeds should be operated at the highest set speed indicated in the instructions. Note: ① During the test, care should be taken not to subject the gaskets, bearings, gear couplings and lubricating oil to thermal or mechanical stress. Stress exceeds normal use. ②Handheld food processors, tabletop food processors, and fruit and vegetable blenders and graters are considered to have a total operating time of no more than 15 hours within one year
18.5 This article is not applicable.
18.6 Paragraph 1 of this article is replaced by the following: During the test process specified in Articles 18.2 and 18.3, regardless of whether the overload protection device operates normally
Except for the following content, this chapter in GB4706.1-84 is applicable. 19.1 This article is replaced by the following:
GB4706.386
When designing the grinder, try your best to avoid fire, mechanical damage or electric shock caused by abnormal operation or misoperation. Compliance shall be determined by the tests specified in 19.6 to 19.10. Note: (① The fuse, thermal tripper, over-current release, etc. installed in the masher can be used as necessary protection devices. ② If there is more than one test item for the same masher, these tests It should be done in sequence. The four items 19.2~19.5 are not applicable.
Note 2 in this article 19.6 "For electric appliances used unattended...the less favorable one shall be chosen." 19.7 and 19.11 These two articles are not applicable.
20 Stability and mechanical hazards
This chapter in GB4706.1-84 is applicable except for the following content. 20.1 The second paragraph from the bottom of this article is not applicable.
20.2 The following content is added to this article:
The accessories of the hand-held blender should be completely shielded from the top and should be equipped with appropriate protective covers. When rotating, the blades cannot contact the walls and walls of the container. At the bottom, the protective cover cannot be removed without tools. Desktop food blenders and desktop fruit and vegetable blenders use a round baffle with a diameter of 125mm, and the distance from the tip to the baffle is 100mm (other dimensions are in accordance with GB4706.1-84 The test finger shall be inspected according to the provisions of Figure 1). The test using the round baffle test finger shall be carried out after removing any cover, cover or accessory, except for the parts that do not need to be removed during normal use. ||tt ||Hand-held food choppers are not tested with round baffle test fingers. If the chopper has multiple mechanical drive shafts, which are in motion during operation of the chopper, the unused shafts should be adequately protected. Prevent accidental contact, such as by fixing the collar or countersunk. During the test, the test finger should not touch dangerous moving parts. 21 Mechanical Strength
This chapter in GB4706.1-84 applies. | tt | Class II or Class III, the hand-held blender is a Class II or Class III electrical structure. Compliance is determined by inspection and relevant tests. 22.2 This article is replaced by the following:
Moisture-proof rating of the blender. It is: ordinary type or IPX1 drip-proof type, IPX4 splash-proof type. Qualification shall be determined by inspection and relevant tests.
22.28 shall be replaced by the following:| |tt||Crushers containing liquids should be designed with protective devices such as covers to prevent food or liquid splashing from endangering personal safety during normal use
22.31 This article does not apply. The following clause is added to this chapter:
The blender shall be designed to prevent food or liquid containers from being contaminated by lubricating oil during the test of this standard. 22.101
22.102 The blender shall be designed to have a structure. Structure to prevent food or liquid from penetrating into places that may cause electrical and mechanical failures. 23 Internal wiring
GB4706.3--86
GB4706.1-84 This chapter except the following Except, applicable to all. 23.5 "And heating wire" and note ② in paragraph 1 of this article do not apply. 24 components
This chapter in GB4706.1-84 is applicable except for the following content. 24.9 The following content is added to this article:
For blenders with electronic controls, when the switch is in the "off" position, the electronic control circuit, such as speed control, should be interrupted.
The switch installed on the blender does not require frequent operation. 24.10 This clause does not apply.
25 Power supply connection and external flexible cables and cords
This chapter in GB4706.1-84 is applicable except for the following content. 25.1 This article is replaced by the following:
The grinder should have a power lead or an electrical socket, but these two ways of connecting to the power supply cannot be used together on the same grinder. Hand-held blenders and non-ordinary blenders should not use electrical sockets. Compliance is determined by inspection.
25.2 This article is replaced by the following:
The rated current of the lead-in wire and socket of the grinder is at least 1A, and the position of its lead wire and socket should be within the feeding, discharging and operation of the grinder. A place that is not contaminated by food or liquids during the process. Compliance shall be determined by inspection.
25.6 Paragraphs 2 and 3 of this article are replaced by the following content. For hand-held blenders with a mass not exceeding 1.5kg, a lightweight polyvinyl chloride sheathed cord may be used. 26 Binding posts for external conductors
This chapter in GB4706.1-84 applies.
27 Grounding device
This chapter in GB4706.1-84 applies.
28 Screws and joints
This chapter in GB4706.1-84 applies.
9 Creepage distances, electrical clearances and through-insulation distances 29
This chapter in GB4706.1-84 is applicable except for the following content. 29.3 This clause does not apply.
30 Heat resistance, flame resistance and tracking resistance
This chapter in GB4706.1--84 applies.
31 Anti-rust
This chapter in GB 4706.1-84 applies.
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5 "And electric heating wire" and note ② in paragraph 1 of this article do not apply. 24 components
This chapter in GB4706.1-84 is applicable except for the following content. 24.9 The following content is added to this article:
For blenders with electronic controllers, when the switch is in the "off" position, the electronic control circuit, such as speed control, should be interrupted.
The switch installed on the blender does not require frequent operation. 24.10 This clause does not apply.
25 Power supply connection and external flexible cables and cords
This chapter in GB4706.1-84 is applicable except for the following content. 25.1 This article is replaced by the following:
The grinder should have a power lead or an electrical socket, but these two ways of connecting to the power supply cannot be used together on the same grinder. Hand-held blenders and non-ordinary blenders should not use electrical sockets. Compliance is determined by inspection.
25.2 This article is replaced by the following:
The rated current of the lead-in wire and socket of the grinder is at least 1A, and the position of its lead wire and socket should be within the feeding, discharging and operation of the grinder. A place that is not contaminated by food or liquids during the process. Compliance shall be determined by inspection.
25.6 Paragraphs 2 and 3 of this article are replaced by the following content. For hand-held blenders with a mass not exceeding 1.5kg, lightweight polyvinyl chloride sheathed flexible cords may be used. 26 Binding posts for external conductors
This chapter in GB4706.1-84 applies.
27 Grounding devicebzxZ.net
This chapter in GB4706.1-84 applies.
28 Screws and joints
This chapter in GB4706.1-84 applies.
9 Creepage distances, electrical clearances and through-insulation distances 29
This chapter in GB4706.1-84 is applicable except for the following content. 29.3 This clause does not apply.
30 Heat resistance, flame resistance and tracking resistance
This chapter in GB4706.1--84 applies.
31 Anti-rust
This chapter in GB 4706.1-84 applies.
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5 "And electric heating wire" and note ② in paragraph 1 of this article do not apply. 24 components
This chapter in GB4706.1-84 is applicable except for the following content. 24.9 The following content is added to this article:
For blenders with electronic controllers, when the switch is in the "off" position, the electronic control circuit, such as speed control, should be interrupted.
The switch installed on the blender does not require frequent operation. 24.10 This clause does not apply.
25 Power supply connection and external flexible cables and cords
This chapter in GB4706.1-84 is applicable except for the following content. 25.1 This article is replaced by the following:
The grinder should have a power lead or an electrical socket, but these two ways of connecting to the power supply cannot be used together on the same grinder. Hand-held blenders and non-ordinary blenders should not use electrical sockets. Compliance is determined by inspection.
25.2 This article is replaced by the following:
The rated current of the lead-in wire and socket of the grinder is at least 1A, and the position of its lead wire and socket should be within the feeding, discharging and operation of the grinder. A place that is not contaminated by food or liquids during the process. Compliance shall be determined by inspection.
25.6 Paragraphs 2 and 3 of this article are replaced by the following content. For hand-held blenders with a mass not exceeding 1.5kg, a lightweight polyvinyl chloride sheathed cord may be used. 26 Binding posts for external conductors
This chapter in GB4706.1-84 applies.
27 Grounding device
This chapter in GB4706.1-84 applies.
28 Screws and joints
This chapter in GB4706.1-84 applies.
9 Creepage distances, electrical clearances and through-insulation distances 29
This chapter in GB4706.1-84 is applicable except for the following content. 29.3 This clause does not apply.
30 Heat resistance, flame resistance and tracking resistance
This chapter in GB4706.1--84 applies.
31 Anti-rust
This chapter in GB 4706.1-84 applies.
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