GB 4706.36-1997 Safety of household and similar electrical appliances Particular requirements for commercial electric water boilers and liquid heaters
Some standard content:
GB4706.36—1997
This standard adopts IEC335-2-63 Safety of household and similar electrical appliances Part 2: Special requirements for commercial electric water boilers and liquid heaters\ (1990 edition). This standard should be used in conjunction with GB4706.1—92 "General requirements for the safety of household and similar electrical appliances.
The safety standard for household and similar electrical appliances consists of two parts, the first part is the general requirements, and the second part is the special requirements for product safety
The part marked "applicable" in this standard indicates that the corresponding provisions in GB4706.1-92 are applicable to this standard; the part marked "replaced" or "modified" in this standard shall be subject to the provisions in this standard; the part marked "added" in this standard indicates that in addition to complying with the corresponding provisions of GR4706.1:02, it must also comply with the provisions added in this standard. This standard was proposed by the Industry Department of the Ministry of Domestic Trade of the People's Republic of China. This standard is jointly managed by the National Technical Committee for Standardization of Commercial Machinery and the National Technical Committee for Standardization of Household Appliances. The drafting unit of this standard is the National Center for Quality Supervision and Inspection of Catering Service Machinery. The main drafters of this standard are Gu Xiru, Xia Xiaowen and Mao Suhua. GB4706.36—1997
IEC Foreword
1) The formal resolutions or agreements of the TEC on technical issues drawn up by the technical committees of all the national committees that are particularly concerned about this issue express the international consensus on the issues involved as closely as possible. 2) These resolutions or agreements are recommended for international use and are accepted by the national committees in this sense. 3) In order to promote international unification, the IEC hopes that the contents of the IFC standards will be adopted as their national regulations within the scope of their internal situation. Any differences between the standards recommended by the TFC and the corresponding national standards should be clearly stated in the national standards as far as possible. IEC Foreword
This publication was prepared by IEC Technical Committee 61 "Safety of Household and Similar Appliances" Subcommittee 61E "Safety of Commercial Electrical Food and Serving Appliances". It is an edition of publication 1EC335-2-63. The text of this publication is based on the following documents: June 1996
61E(CO)40
61E(CO)74
61IE(CO)75
61F(CO)76
Voting Report
61 E(CO)54
61E(CO)95
61E(CO)96
SIE(CO)97
February Procedure
6TE(CO)64
Details of the approval of this publication may be found in the voting report indicated in the table above. Voting Report
61E(CO)81
This part is intended for use in conjunction with IEC 335-1 publication. It is based on the second edition (1976), second printing (1983) Based on the IFC 335-1 publication, including revisions No. 1 (1977), No. 2 (1979) and No. 3 (1982) and based on revisions No. 4 (1984), No. 5 (1986) and No. 6 (1988). In future new editions of IFC 335-1 publication or its revisions, this Part 2 supplements or amends the corresponding provisions in IFC 3351 publication to transform that publication into the IEC standard: Safety requirements for commercial electric water boilers and liquid heaters. If individual provisions of Part 1 are not mentioned in Part 2, such as If reasonable, these clauses still apply. When making "introduction, addition", "amendment" or "replacement" in this edition, the relevant requirements, test specifications or instructions in Part 1 should be modified accordingly. In this publication:
1) The following printing fonts are used:
-Requirement itself, roman;
Test specification; italic
Remarks: small roman,
2) The clauses or figures added to Part 1 should be numbered from 101: the added appendices are marked with letters AA, BB, etc. The following IEC publications are referenced in this standard: Publication No. 529 (1989); Classification of degree of protection provided by external accessories 1 Scope
National Standard of the People's Republic of China
Safety of household and similar electrical appliances
Particular requirements for commercial water electric boilers and liquid heaters Safety of household and similar electrical appliances Particular requirements for commercial water electric boilers and liquid heaters Except for the following contents, this chapter in GR4706.1-92 is applicable. 1.1 This clause is replaced by the following:
GB 4706.36—1997
idt IEC 335-2-63: 1990
This standard applies to commercial electric water boilers and liquid heaters for domestic use, which are used to boil or heat liquids for making beverages. Appliances using other forms of energy, the electrical parts of which are also within the scope of this standard, do not apply to:
Appliances designed for industrial use;
Appliances with electrode heaters;
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 in vehicles, ships or aircraft. Special requirements may need to be added for appliances used in tropical countries. Additional requirements specified by the health, water supply and labor protection departments of many countries should also be considered. In many countries, additional requirements are added to the pressure vessel regulations. 2 Definitions
Except for the following, this chapter in GB4706.192 is applicable. 2.2.4 This clause adds the following:
The rated input power is the sum of the rated power of all individual components operating when the appliance is powered; among several such combinations that may exist, the rated input power is determined by the combination with the lowest input power. 2.2.19 This clause adds the following:
Whenever "Class I" is used in this standard, it should be understood as a component of Class I structure. 2.2.20 This clause adds the following:
Whenever "Class II" is used in this standard, it should be understood as a component of Class II structure. 2.2.29 This clause is replaced with the following:
Fully exothermic conditions refer to the following conditions under which the appliance is operated: The appliance is operated in accordance with the manufacturer's instructions, and all controls for user operation are adjusted to their highest settings. If there is a cover or lid: they are placed in their normal position.
The device for injecting liquid manually or manually shall be injected to the marked position. When several liquid levels are marked, the liquid level that can give the most unfavorable conditions shall be selected. Approved by the State Administration of Technical Supervision on November 25, 1997 and implemented on December 1, 1998.
GB 4706. 361997
Automatic water injection devices shall be connected to a water source that meets the pressure specified by the manufacturer. When the manufacturer specifies a pressure range, it shall be adjusted to the pressure that can give the most unfavorable conditions. The temperature of the water supply is 15℃±5℃.
If the water level must be adjusted during the test period, it shall be adjusted according to the manufacturer's instructions. The continuous outflow device works with the drain switch open, and this type of device and liquid heater works with the drain switch closed. 2.2.30 This article is replaced by the following content;
Normal load means the load obtained when the motor installed in the appliance works in the required manner under the worst conditions that may occur in normal use as determined in the manufacturing instructions when the appliance is working under fully heat-dissipating conditions. The following clauses are added to this chapter:
2.2.101 A water boiler is an appliance that can continuously supply boiling water as soon as the drain switch is turned on. 2.2.102 A liquid heater is an appliance that heats a liquid to a temperature below the boiling point or keeps the liquid at a temperature below the quasi-boiling point; it can supply the liquid as soon as the drain switch is turned on.
2.2.103 A continuous outflow type A water boiler or continuous outflow wave heater refers to an appliance that can supply boiling water or heated liquid at a continuous rate proportional to the electrical input:
2.2.104 A storage water boiler or storage wave heater refers to an appliance that can store boiling water or heated liquid when the discharge switch is closed. 2.2.105 The liquid level mark refers to the highest position marked on the appliance for correct operation. 2.2.106 Rated pressure refers to the maximum working pressure specified for the pressure-bearing parts of the appliance during manufacture. 3 General requirements
This chapter in GB4706.192 is applicable.
4 General instructions for testing
In addition to the following contents,This chapter in GB4706.1-92 is applicable to the following clauses added to this chapter:
4.101 For combined appliances, if the voltage required to increase the input power of the heating part to 1.15 times the rated input power exceeds the voltage required to increase the motor voltage to 1.06 times the rated voltage by more than 3V, the motor should use a separate power supply. 4.102 Appliances that are assembled with other appliances or equipped with other appliances should be tested according to the requirements of this standard. Other appliances shall work simultaneously in accordance with the requirements of relevant standards. 4.103 For appliances using energy other than electricity: When testing their electrical components: The influence of non-electrical components of the appliance must be considered. 5 Ratings This chapter in GB4706.192 is applicable. 6 Classification Except for the following content, this chapter in GF4706.192 is applicable. 6.1 This clause is added with the following content; The following content is added to item (2): Injection-proof appliances (IPX5. According to IEC publication 529), this clause is added with the following content: (3) Classification according to the degree of protection against high temperatures caused by installation conditions: Appliances installed in isolation; Appliances installed in other appliance groups. GR4706.36-1997 Currently, there are no additional requirements for appliances installed in other appliance groups. 7 Marking
Except for the following contents, this chapter in GB4706.1-92 is applicable. 7.1 This clause adds the following contents:
The following markings shall also be present on the appliance:
The rated pressure in kPa on the pressure-bearing parts of the appliance; - For appliances connected to a water source, the water pressure or water pressure range in kPa. Unless already specified in the instructions. 7.6 This clause adds the following contents:
Add the following two items to the standard symbol table:
Anti-spray structure
7.12 This clause adds the following contents:
The appliance shall be accompanied by an instruction manual, which shall specify in detail the matters that must be taken care of during installation. Operating procedures and user maintenance, such as cleaning, shall also be provided.
Appliances with appliance input sockets that need to be partially or completely immersed in water when cleaning should be provided with instructions and should state that: before cleaning the appliance, the connector should be removed and the appliance input socket must be dried before the next use. For appliances permanently connected to fixed wiring, the instructions should provide information on the protective measures to be taken against leakage current during installation. If the appliance is not a spray-proof structure, a clear and detailed instruction manual should be provided to the user together with the appliance, which should state that the appliance must not be cleaned with a water jet.
The following clauses are added to this chapter:
7.101 Appliances that are filled with liquid by hand or with a manually operated switch should be marked with a liquid level mark. 8 Protection against electric shock
This chapter in GB4706.1-92 is applicable. 9 Starting of electric appliances
This chapter in GB4706.1-92 is applicable. 10 Input power and current
Except as follows, this clause in GB4706.1-92 shall apply. 10.1 This clause adds the following content:
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 powers of all individual components in the curtain that can work simultaneously; when there may be several such groups, the rated input power is determined by the combination of the maximum input powers. 11 Heat
Except as follows, this clause in GB4706.1-92 shall apply. 11.2 This clause adds the following content:
An appliance fixed to the floor shall be installed in accordance with the manufacturer's instructions. If instructions 15 are not provided, GB4706.1--92 shall apply. 11.4 This clause is replaced by the following content:
The appliance is operated under full heat release 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 distance shall be tested in reverse under the conditions permitted by the switch configuration. During the test, the circuit shall be connected with the highest possible load in each switch configuration. If the appliance is equipped with a control device that limits the total input power, the combination of heating elements that can be selected by this control device to apply the most severe conditions shall be tested. 11.7 This clause shall be replaced by the following: The appliance shall be operated continuously until a steady state is reached. 11.8 This clause is amended with the following content;
During the test, the pressure relief device should not operate. 11.10 This clause is amended with the following content: The following content replaces the note in Table 1:
National number "p\ is equal to 8000
12 Appliances with heating elements working under overload conditions This chapter in GR4706.1-92 is applicable.
13 Electrical insulation and leakage current at working temperature Except for the following content, this chapter in GB4706.1-92 is applicable. 13.2 This clause is amended with the following content: The following content replaces the allowable value of leakage current of fixed test type appliances: ·Equipment connected with a flexible cord and plug only
·Other appliances
This clause is amended with the following content:
.....1 mA/kw Maximum limit 10 mA.
.|mA/kwNo maximum limit.
When the appliance is equipped with Class II or Class II 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
GB This chapter in 4706.1-92 is applicable
15 Waterproof
Except for the following content, the content of Chapter 15 in GR4706.1-92 is applicable: 15.2 The following content is added to this clause:
Ordinary and drip-proof appliances are also subject to the splash test implemented using the device shown in Figure 10 of GB4706.1-92. Spray-proof appliances are subject to the test described in IEC Publication No. 529 (IPX5). 15.3 This clause is modified with the following content: Replace the requirement with the following content:
The structure of the appliance should be such that the overflow of liquid will not affect its electrical insulation during normal use. Replace the paragraph regarding the test instructions for liquid containers with the following content: Appliances on which it is impossible to place containers and appliances placed in cabinets For the equipment under the table, 2.5 L of water containing approximately 1% NaCl are tested. For all other equipment, 5.1 L of water containing approximately 1% VaCl are tested. During the test, the specified amount of water is poured evenly into the equipment from above at intervals of 1 min. Equipment that is filled with water using a manually operated valve or an automatically operated valve is connected to a water source that meets the maximum water pressure indicated by the manufacturer. The control valves for water leakage are kept fully open and continue to fill with water for 1 min after the first occurrence of water leakage or until other protective systems are activated and the water flow stops. Other equipment is first filled with water containing approximately 1% NaCl and then evenly poured into the equipment at intervals of 1 min with an increase of 5% of the container volume but not more than 10 L. 15.4 This clause is amended with the following: Replace the specified time with the following:
The appliance is placed in a damp mixing chamber (box) for 24 l. This clause adds the following:
GB4706.36
If it is not possible to place the entire appliance in a damp mixing chamber (box), the parts containing electrical components are tested separately, but the conditions occurring in the appliance must be taken into account.
This chapter adds the following clause:
15.101 Appliances equipped with water switches for filling or cleaning should be designed so that the water flowing from the switch cannot contact live parts. Compliance is determined by the following test: The appliance is connected to a water source that meets the maximum water supply pressure indicated by the manufacturer. Tiltable and movable parts, including covers, are tilted or placed in the most unfavorable position. The rotatable outlet pipe of the water switch is placed in such a position that the water flows to those parts that will produce the most unfavorable results. All devices for controlling water inlet are opened by 1πil. After this treatment, the appliance should immediately withstand the insulation strength test of Chapter 16. 16 Insulation resistance and electrical strength
Except for the following content, this chapter in GB 4706.1-92 is applicable. 16.2 This clause is modified with the following content: The following content replaces the allowable value of leakage current of fixed type appliances: Appliances with flexible cords and plug connections
Other appliances
17 Overload protection
This chapter in GR 4706.192 is applicable.
18 Durability
...2mA/kw Maximum limit 10mA:
.2mA/k No maximum limit
Except for the above mentioned thermal capacity, this chapter in GB4706.1--92 is applicable. 18.1 This clause adds the following content:
The test is only carried out on the electrical parts of the appliance. 18.2 This clause is amended with the following content: The paragraph of the test description in the table is replaced with the following content: The electric part of the appliance is operated at a normal load and 0.9 times the rated voltage for 48 hours. 19 Abnormal operation
Except for the following content, this chapter in GB 4706.1-92 is applicable. 19.1 This clause is amended with the following content; The tests specified as applicable are replaced with the following content: · For all appliances
In addition:
+ * It is necessary to test 19.2 and 19.3 · For appliances with limited controllers in the test of this chapter · · For appliances with motors
19.2 This clause is added with the following content:
* - Test according to 19.4.
** If applicable, test according to 19.6 and 19.7 or 19.10. Insufficient heat release conditions can be achieved by running the appliance without water. 19.4 The following shall apply:
The appliance is tested under the conditions specified in clause 11, but the voltage shall be such that the input power is 1,24 times the rated input power and any controls used to limit the temperature during the tests in clause 11 are short-circuited. GB 4706.361997
If the appliance is equipped with more than one control, these controls shall be short-circuited in sequence: If the applicable standard covers the conditions present in the appliance, contactors complying with the relevant IEC standard shall not open or short-circuit. However, placing the main contacts of a contactor used to connect and disconnect heating elements in the "on" position during normal use 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 are independently operated, or a contactor that operates two independent sets of main contacts by two independent armatures. 20 Stability and mechanical hazards
This clause in GB 4706.1-92 is applicable.
21 Mechanical strength
This clause in GB 4706.1-92 is applicable. 22 Structure
Except for the following, this clause in GB 4706.1-92 is applicable. 22.1 This clause is replaced by the following:
The appliance shall be of Class 1.
The classification is determined by visual inspection and relevant tests. 22.18 This clause is replaced by the following:
Appliances operated at pressures above atmospheric pressure (overpressure) shall be equipped with appropriate pressure relief devices to prevent overpressure. Operate the appliance at rated input power, with the pressure controller inoperative, to determine compliance. During the test, the pressure relief device shall operate to prevent the internal pressure from exceeding the rated pressure by 10%. The following clause is added to this chapter:
22.1 The equipment shall be protected so that moisture and grease do not accumulate to the extent that the values of the galvanic distance and the electrical barrier are affected. Compliance is checked by inspection.
22.102 Thermal circuit breakers shall be of the non-automatic reset automatic tripping type. Compliance is checked by inspection and manual test. In Sweden, the thermal circuit breaker curtain shall not be set higher than 120°C. 22.103 The working pressure shall not exceed the rated pressure. Compliance is checked when performing the tests in Chapter 11. 22.104 Appliances equipped with drain switches or drain valves shall be designed so that it is impossible to accidentally open the switch or valve. Compliance is checked by inspection and manual test. 22.105 The device for discharging the corona from the appliance shall be discharged in such a way that it does not affect the electrical insulation. Compliance is checked by inspection and manual test. 22.106 Pressure equipment shall be able to withstand the rated pressure. The following test is used to check whether the set is qualified; subject the pressure vessel to a hydrostatic pressure of 1.3 times the rated value for 30 minutes. All outlets are sealed and any pressure relief device is inoperative. Static pressure can be generated by a body other than a permanent device. During the test, the pressure vessel should show no signs of leakage or permanent deformation, and should not explode. In Sweden, the test of pressure vessels is carried out at a pressure of 1000kPe. 22.107 The water level mark of the artificial water filling device should be placed in a position that is easy to see during water filling. Compliance is determined by visual inspection:
1) For the need of three-phase five-wire power supply, there is no suitable head in my country. In this case, the dangerous equipment is Class ". 23 Internal wiring
This chapter in GB 4706.1-92 is applicable. 24 Components
GB 4706. 36 1997
Except as follows, this chapter in GR4706.1-92 is applicable. 24.11 This clause is replaced by the following:
Thermal circuit breakers shall be able to cut off all electrodes. Compliance is checked by inspection.
This chapter adds the following clause:
24.101 Connectors installed on appliances shall not contain thermostats. Compliance is checked by inspection.
25 Power supply connections and external flexible cables and cords
Except as follows, this chapter in GB4706.1-92 is applicable. 25.1 This clause adds the following clause Content:
Terminals for permanent connection of fixed wiring may also be suitable for X connection of power cord. In this case, the instructions shall provide detailed data of the power cord.
Compliance shall be determined by visual inspection.
25.2 This clause adds the following content:
Design of fixed-weight appliances and appliances with a mass of more than 40kg and equipped with rollers or castors: It should allow the appliance to be installed in accordance with the manufacturer's instructions before connecting the power cord. 25.3 This clause adds the following content:
Spray-proof appliances should not be equipped with input sockets for the appliance. 25.4 This clause adds the following content: Content:
Appliances delivered without cords shall be connected with X. 25.6 This clause is modified with the following content; the following content replaces the specified power cord type: The power cord shall be an oil-resistant, sheathed flexible cable, not lighter than ordinary chloroprene rubber or other equivalent synthetic rubber sheathed cord (code 245 in TFC57),
26 Terminals for external conductors
This chapter in GB4706.1--92 is applicable. 27 Grounding measures
Except for the following content, this chapter in GB4706.1--92 is applicable. 27.2 This clause adds the following content Content:
Fixed appliances should be equipped with a terminal for connecting external equicentric conductors. The terminal should maintain effective electrical connection with all fixed exposed metal parts of the appliance and should be able to connect to wires with a nominal cross-sectional area of less than 10m2. The terminal should be located in a position to connect to a fixed earthing conductor after the appliance is installed. Small fixed exposed metal parts, such as nameplates, are not required to be electrically connected to the terminal. 28 Screws and wiring
This chapter in GB4706.192 is applicable.
29 Creepage distance, electrical tunnel and through insulation distance CB All of the above provisions in GB 4706.1-92 are applicable.
30 Resistance to heat, flame and tracking resistance
GB 4706.36
Except for the above provisions, all of the above provisions in GB 4706.392 are applicable. 30.3 This clause is modified with the following content
The test humidity of the glow-wire test described in Appendix K is 650. 30.4 This clause adds the following content
The appliance shall be regarded as an appliance used when unattended 30.5 This clause adds the following content
Switch devices with moving contacts, except those that are manually operated and only operate during abnormal operation, shall be regarded as being used under extremely severe working conditions.
In addition, other insulating material parts are also regarded as being used under extremely severe working conditions unless their sealing conditions and placement are such that condensation contamination is unlikely to occur. In this case, the requirements for severe working conditions apply. 31 Rust prevention
This chapter in GB 4706.1-92 is applicable.
Radiation, toxicity and similar hazards
This chapter in GP 4706.1-92 is applicable. The appendix contents in GB 4706.36-1997
CB 4706.1-92 are applicable.However, the voltage shall be such that the input power is 1.24 times the rated input power and any controller used to limit the temperature during the test in clause 11 shall be short-circuited. GB 4706.361997
If the appliance is equipped with more than one controller, these controllers shall be short-circuited in sequence: if the applicable standard covers the conditions present in the appliance, the contactor complying with the relevant IEC standard shall not be open-circuited or short-circuited. However, setting the main contacts of a contactor used to connect and disconnect heating elements in normal use in the "on" position shall be considered a fault condition unless the appliance is equipped with at least two sets of contacts connected in series, for example, a contactor that is independently operated, or a contactor that is operated by two independent armatures with two independent sets of main contacts. 20 Stability and mechanical hazards
This clause in GB4706.1-92 is applicable.
21 Mechanical strength
This clause in GB4706.1-92 is applicable. 22 Structure
Except for the following, this chapter in GB 4706.1-92 is applicable. 22.1 This clause is replaced by the following:
The appliance shall be of Class 1.
The classification is determined by visual inspection and relevant tests. 22.18 This clause is replaced by the following:
Apparatus operated at pressures higher than atmospheric pressure (overpressure) shall be equipped with appropriate pressure relief devices to prevent overpressure. The appliance shall be operated at rated input power and the pressure controller shall be inoperative to determine compliance. During the test, the pressure relief device shall operate to prevent the internal pressure from exceeding the rated pressure by 10%. The following clause is added to this chapter:
22.1 The appliance shall be protected so that moisture and grease do not accumulate to the extent that the values of the galvanic distance and the electrical barrier are affected. Compliance is determined by visual inspection.
22.102 Thermal circuit breakers shall be of the non-automatic reset automatic tripping type. Compliance is checked by inspection and by manual tests. In Sweden, the thermal break shall not be set higher than 120°C. 22.103 The working pressure shall not exceed the rated pressure. Compliance is checked when carrying out the tests of clause 11. 22.104 Appliances fitted with drain switches or drain valves shall be so designed that it is not possible to accidentally open the switch or valve. Compliance is checked by inspection and by manual tests. 22.105 Means for discharging fluid from the appliance shall be used in such a way that the discharge does not affect the electrical insulation. Compliance is checked by inspection and by manual tests. 22.106 Pressure equipment shall be capable of withstanding the rated pressure. Compliance is checked by the following test: The pressure vessel is subjected to a hydrostatic pressure of 1.3 times the rated value for 30 min. All outlets are sealed and any pressure relief device is inoperative. Hydrostatic pressure may be generated by means other than permanent. During the test, the pressure vessel shall show no signs of leakage or permanent deformation and shall not explode. In Sweden, the pressure vessel test is carried out at a pressure of 1000 kPe. 22.107 The water level mark of the artificial water filling device should be placed in a position that is easy to see when filling water. The qualification is determined by visual inspection:
1) For the equipment that meets the requirements of the three-phase five-wire power supply, there is no suitable equipment in my country. In this case, the equipment is classified as "Class 23 Internal wiring
This chapter in GB 4706.1-92 is applicable. 24 Components
GB 4706.36 1997
Except as follows, this chapter in GR4706.1-92 is applicable. 24.11 This clause is replaced by the following:
Thermal circuit breakers shall be able to cut off all electrodes. Compliance is checked by inspection.
This chapter adds the following clause:
24.101 Connectors installed on appliances shall not contain thermostats. Compliance is checked by inspection.
25 Power supply connections and external flexible cables and cords
Except as follows, this chapter in GB4706.1-92 is applicable. 25.1 This clause adds the following clause Content:
Terminals for permanent connection of fixed wiring may also be suitable for X connection of power cord. In this case, the instructions shall provide detailed data of the power cord.
Compliance shall be determined by visual inspection.
25.2 This clause adds the following content:
Design of fixed-weight appliances and appliances with a mass of more than 40kg and equipped with rollers or castors: It should allow the appliance to be installed in accordance with the manufacturer's instructions before connecting the power cord. 25.3 This clause adds the following content:
Spray-proof appliances should not be equipped with input sockets for the appliance. 25.4 This clause adds the following content: Content:
Appliances delivered without cords shall be connected with X. 25.6 This clause is modified with the following content; the following content replaces the specified power cord type: The power cord shall be an oil-resistant, sheathed flexible cable, not lighter than ordinary chloroprene rubber or other equivalent synthetic rubber sheathed cord (code 245 in TFC57),
26 Terminals for external conductors
This chapter in GB4706.1--92 is applicable. 27 Grounding measures
Except for the following content, this chapter in GB4706.1--92 is applicable. 27.2 This clause adds the following content Content:
Fixed appliances should be equipped with a terminal for connecting external equicentric conductors. The terminal should maintain effective electrical connection with all fixed exposed metal parts of the appliance and should be able to connect to wires with a nominal cross-sectional area of less than 10m2. The terminal should be located in a position to connect to a fixed earthing conductor after the appliance is installed. Small fixed exposed metal parts, such as nameplates, are not required to be electrically connected to the terminal. 28 Screws and wiring
This chapter in GB4706.192 is applicable.
29 Creepage distance, electrical tunnel and through insulation distance CB All of the above provisions in GB 4706.1-92 are applicable.
30 Resistance to heat, flame and tracking resistancebzxz.net
GB 4706.36
Except for the above provisions, all of the above provisions in GB 4706.392 are applicable. 30.3 This clause is modified with the following content
The test humidity of the glow-wire test described in Appendix K is 650. 30.4 This clause adds the following content
The appliance shall be regarded as an appliance used when unattended 30.5 This clause adds the following content
Switch devices with moving contacts, except those that are manually operated and only operate during abnormal operation, shall be regarded as being used under extremely severe working conditions.
In addition, other insulating material parts are also regarded as being used under extremely severe working conditions unless their sealing conditions and placement are such that condensation contamination is unlikely to occur. In this case, the requirements for severe working conditions apply. 31 Rust prevention
This chapter in GB 4706.1-92 is applicable.
Radiation, toxicity and similar hazards
This chapter in GP 4706.1-92 is applicable. The appendix contents in GB 4706.36-1997
CB 4706.1-92 are applicable.However, the voltage shall be such that the input power is 1.24 times the rated input power and any controller used to limit the temperature during the test in clause 11 shall be short-circuited. GB 4706.361997
If the appliance is equipped with more than one controller, these controllers shall be short-circuited in sequence: if the applicable standard covers the conditions present in the appliance, the contactor complying with the relevant IEC standard shall not be open-circuited or short-circuited. However, setting the main contacts of a contactor used to connect and disconnect heating elements in normal use in the "on" position shall be considered a fault condition unless the appliance is equipped with at least two sets of contacts connected in series, for example, a contactor that is independently operated, or a contactor that is operated by two independent armatures with two independent sets of main contacts. 20 Stability and mechanical hazards
This clause in GB4706.1-92 is applicable.
21 Mechanical strength
This clause in GB4706.1-92 is applicable. 22 Structure
Except for the following, this chapter in GB 4706.1-92 is applicable. 22.1 This clause is replaced by the following:
The appliance shall be of Class 1.
The classification is determined by visual inspection and relevant tests. 22.18 This clause is replaced by the following:
Apparatus operated at pressures higher than atmospheric pressure (overpressure) shall be equipped with appropriate pressure relief devices to prevent overpressure. The appliance shall be operated at rated input power and the pressure controller shall be inoperative to determine compliance. During the test, the pressure relief device shall operate to prevent the internal pressure from exceeding the rated pressure by 10%. The following clause is added to this chapter:
22.1 The appliance shall be protected so that moisture and grease do not accumulate to the extent that the values of the galvanic distance and the electrical barrier are affected. Compliance is determined by visual inspection.
22.102 Thermal circuit breakers shall be of the non-automatic reset automatic tripping type. Compliance is checked by inspection and by manual tests. In Sweden, the thermal break shall not be set higher than 120°C. 22.103 The working pressure shall not exceed the rated pressure. Compliance is checked when carrying out the tests of clause 11. 22.104 Appliances fitted with drain switches or drain valves shall be so designed that it is not possible to accidentally open the switch or valve. Compliance is checked by inspection and by manual tests. 22.105 Means for discharging fluid from the appliance shall be used in such a way that the discharge does not affect the electrical insulation. Compliance is checked by inspection and by manual tests. 22.106 Pressure equipment shall be capable of withstanding the rated pressure. Compliance is checked by the following test: The pressure vessel is subjected to a hydrostatic pressure of 1.3 times the rated value for 30 min. All outlets are sealed and any pressure relief device is inoperative. Hydrostatic pressure may be generated by means other than permanent. During the test, the pressure vessel shall show no signs of leakage or permanent deformation and shall not explode. In Sweden, the pressure vessel test is carried out at a pressure of 1000 kPe. 22.107 The water level mark of the artificial water filling device should be placed in a position that is easy to see when filling water. The qualification is determined by visual inspection:
1) For the equipment that meets the requirements of the three-phase five-wire power supply, there is no suitable equipment in my country. In this case, the equipment is classified as "Class 23 Internal wiring
This chapter in GB 4706.1-92 is applicable. 24 Components
GB 4706.36 1997
Except as follows, this chapter in GR4706.1-92 is applicable. 24.11 This clause is replaced by the following:
Thermal circuit breakers shall be able to cut off all electrodes. Compliance is checked by inspection.
This chapter adds the following clause:
24.101 Connectors installed on appliances shall not contain thermostats. Compliance is checked by inspection.
25 Power supply connections and external flexible cables and cords
Except as follows, this chapter in GB4706.1-92 is applicable. 25.1 This clause adds the following clause Content:
Terminals for permanent connection of fixed wiring may also be suitable for X connection of power cord. In this case, the instructions shall provide detailed data of the power cord.
Compliance shall be determined by visual inspection.
25.2 This clause adds the following content:
Design of fixed-weight appliances and appliances with a mass of more than 40kg and equipped with rollers or castors: It should allow the appliance to be installed in accordance with the manufacturer's instructions before connecting the power cord. 25.3 This clause adds the following content:
Spray-proof appliances should not be equipped with input sockets for the appliance. 25.4 This clause adds the following content: Content:
Appliances delivered without cords shall be connected with X. 25.6 This clause is modified with the following content; the following content replaces the specified power cord type: The power cord shall be an oil-resistant, sheathed flexible cable, not lighter than ordinary chloroprene rubber or other equivalent synthetic rubber sheathed cord (code 245 in TFC57),
26 Terminals for external conductors
This chapter in GB4706.1--92 is applicable. 27 Grounding measures
Except for the following content, this chapter in GB4706.1--92 is applicable. 27.2 This clause adds the following content Content:
Fixed appliances should be equipped with a terminal for connecting external equicentric conductors. The terminal should maintain effective electrical connection with all fixed exposed metal parts of the appliance and should be able to connect to wires with a nominal cross-sectional area of less than 10m2. The terminal should be located in a position to connect to a fixed earthing conductor after the appliance is installed. Small fixed exposed metal parts, such as nameplates, are not required to be electrically connected to the terminal. 28 Screws and wiring
This chapter in GB4706.192 is applicable.
29 Creepage distance, electrical tunnel and through insulation distance CB All of the above provisions in GB 4706.1-92 are applicable.
30 Resistance to heat, flame and tracking resistance
GB 4706.36
Except for the above provisions, all of the above provisions in GB 4706.392 are applicable. 30.3 This clause is modified with the following content
The test humidity of the glow-wire test described in Appendix K is 650. 30.4 This clause adds the following content
The appliance shall be regarded as an appliance used when unattended 30.5 This clause adds the following content
Switch devices with moving contacts, except those that are manually operated and only operate during abnormal operation, shall be regarded as being used under extremely severe working conditions.
In addition, other insulating material parts are also regarded as being used under extremely severe working conditions unless their sealing conditions and placement are such that condensation contamination is unlikely to occur. In this case, the requirements for severe working conditions apply. 31 Rust prevention
This chapter in GB 4706.1-92 is applicable.
Radiation, toxicity and similar hazards
This chapter in GP 4706.1-92 is applicable. The appendix contents in GB 4706.36-1997
CB 4706.1-92 are applicable.102 Thermal cut-outs shall be of the non-automatic reset automatic tripping type. Compliance is checked by inspection and manual test. In Sweden, the thermal cut-out curtain shall not be set higher than 120°C. 22.103 The working pressure shall not exceed the rated pressure. Compliance is checked when the test of Chapter 11 is carried out. 22.104 Appliances equipped with drain switches or drain valves shall be designed so that it is impossible to accidentally open the switch or valve. Compliance is checked by inspection and manual test. 22.105 Means for discharging corona from the appliance shall be discharged in such a way that the electrical insulation is not affected. Compliance is checked by inspection and manual test. 22.106 Pressure equipment shall be able to withstand the rated pressure. Compliance is checked by the following test: subject the pressure vessel to a hydrostatic pressure of 1.3 times the rated value for 30 min. All outlets 11 are sealed and any pressure relief device is inoperative. Hydrostatic pressure may be generated by a pressure relief device other than a permanent one. During the test, the pressure vessel shall show no signs of leakage or permanent deformation and shall not explode. In Sweden, the test of pressure vessels is carried out at a pressure of 1000kPe. 22.107 The water level mark of the artificial water filling device should be placed in a position that is easy to see when filling water. The qualification is determined by visual inspection:
1) For the equipment that meets the requirements of the three-phase five-wire power supply, there is no suitable equipment in my country. In this case, the equipment is classified as "Class 23 Internal wiring
This chapter in GB 4706.1-92 is applicable. 24 Components
GB 4706.36 1997
Except as follows, this chapter in GR4706.1-92 is applicable. 24.11 This clause is replaced by the following:
Thermal circuit breakers shall be able to cut off all electrodes. Compliance is checked by inspection.
This chapter adds the following clause:
24.101 Connectors installed on appliances shall not contain thermostats. Compliance is checked by inspection.
25 Power supply connections and external flexible cables and cords
Except as follows, this chapter in GB4706.1-92 is applicable. 25.1 This clause adds the following clause Content:
Terminals for permanent connection of fixed wiring may also be suitable for X connection of power cord. In this case, the instructions shall provide detailed data of the power cord.
Compliance shall be determined by visual inspection.
25.2 This clause adds the following content:
Design of fixed-weight appliances and appliances with a mass of more than 40kg and equipped with rollers or castors: It should allow the appliance to be installed in accordance with the manufacturer's instructions before connecting the power cord. 25.3 This clause adds the following content:
Spray-proof appliances should not be equipped with input sockets for the appliance. 25.4 This clause adds the following content: Content:
Appliances delivered without cords shall be connected with X. 25.6 This clause is modified with the following content; the following content replaces the specified power cord type: The power cord shall be an oil-resistant, sheathed flexible cable, not lighter than ordinary chloroprene rubber or other equivalent synthetic rubber sheathed cord (code 245 in TFC57),
26 Terminals for external conductors
This chapter in GB4706.1--92 is applicable. 27 Grounding measures
Except for the following content, this chapter in GB4706.1--92 is applicable. 27.2 This clause adds the following content Content:
Fixed appliances should be equipped with a terminal for connecting external equicentric conductors. The terminal should maintain effective electrical connection with all fixed exposed metal parts of the appliance and should be able to connect to wires with a nominal cross-sectional area of less than 10m2. The terminal should be located in a position to connect to a fixed earthing conductor after the appliance is installed. Small fixed exposed metal parts, such as nameplates, are not required to be electrically connected to the terminal. 28 Screws and wiring
This chapter in GB4706.192 is applicable.
29 Creepage distance, electrical tunnel and through insulation distance CB All of the above provisions in GB 4706.1-92 are applicable.
30 Resistance to heat, flame and tracking resistance
GB 4706.36
Except for the above provisions, all of the above provisions in GB 4706.392 are applicable. 30.3 This clause is modified with the following content
The test humidity of the glow-wire test described in Appendix K is 650. 30.4 This clause adds the following content
The appliance shall be regarded as an appliance used when unattended 30.5 This clause adds the following content
Switch devices with moving contacts, except those that are manually operated and only operate during abnormal operation, shall be regarded as being used under extremely severe working conditions.
In addition, other insulating material parts are also regarded as being used under extremely severe working conditions unless their sealing conditions and placement are such that condensation contamination is unlikely to occur. In this case, the requirements for severe working conditions apply. 31 Rust prevention
This chapter in GB 4706.1-92 is applicable.
Radiation, toxicity and similar hazards
This chapter in GP 4706.1-92 is applicable. The appendix contents in GB 4706.36-1997
CB 4706.1-92 are applicable.102 Thermal cut-outs shall be of the non-automatic reset automatic tripping type. Compliance is checked by inspection and manual test. In Sweden, the thermal cut-out curtain shall not be set higher than 120°C. 22.103 The working pressure shall not exceed the rated pressure. Compliance is checked when the test of Chapter 11 is carried out. 22.104 Appliances equipped with drain switches or drain valves shall be designed so that it is impossible to accidentally open the switch or valve. Compliance is checked by inspection and manual test. 22.105 Means for discharging corona from the appliance shall be discharged in such a way that the electrical insulation is not affected. Compliance is checked by inspection and manual test. 22.106 Pressure equipment shall be able to withstand the rated pressure. Compliance is checked by the following test: subject the pressure vessel to a hydrostatic pressure of 1.3 times the rated value for 30 min. All outlets 11 are sealed and any pressure relief device is inoperative. Hydrostatic pressure may be generated by a pressure relief device other than a permanent one. During the test, the pressure vessel shall show no signs of leakage or permanent deformation and shall not explode. In Sweden, the test of pressure vessels is carried out at a pressure of 1000kPe. 22.107 The water level mark of the artificial water filling device should be placed in a position that is easy to see when filling water. The qualification is determined by visual inspection:
1) For the equipment that meets the requirements of the three-phase five-wire power supply, there is no suitable equipment in my country. In this case, the equipment is classified as "Class 23 Internal wiring
This chapter in GB 4706.1-92 is applicable. 24 Components
GB 4706.36 1997
Except as follows, this chapter in GR4706.1-92 is applicable. 24.11 This clause is replaced by the following:
Thermal circuit breakers shall be able to cut off all electrodes. Compliance is checked by inspection.
This chapter adds the following clause:
24.101 Connectors installed on appliances shall not contain thermostats. Compliance is checked by inspection.
25 Power supply connections and external flexible cables and cords
Except as follows, this chapter in GB4706.1-92 is applicable. 25.1 This clause adds the following clause Content:
Terminals for permanent connection of fixed wiring may also be suitable for X connection of power cord. In this case, the instructions shall provide detailed data of the power cord.
Compliance shall be determined by visual inspection.
25.2 This clause adds the following content:
Design of fixed-weight appliances and appliances with a mass of more than 40kg and equipped with rollers or castors: It should allow the appliance to be installed in accordance with the manufacturer's instructions before connecting the power cord. 25.3 This clause adds the following content:
Spray-proof appliances should not be equipped with input sockets for the appliance. 25.4 This clause adds the following content: Content:
Appliances delivered without cords shall be connected with X. 25.6 This clause is modified with the following content; the following content replaces the specified power cord type: The power cord shall be an oil-resistant, sheathed flexible cable, not lighter than ordinary chloroprene rubber or other equivalent synthetic rubber sheathed cord (code 245 in TFC57),
26 Terminals for external conductors
This chapter in GB4706.1--92 is applicable. 27 Grounding measures
Except for the following content, this chapter in GB4706.1--92 is applicable. 27.2 This clause adds the following content Content:
Fixed appliances should be equipped with a terminal for connecting external equicentric conductors. The terminal should maintain effective electrical connection with all fixed exposed metal parts of the appliance and should be able to connect to wires with a nominal cross-sectional area of less than 10m2. The terminal should be located in a position to connect to a fixed earthing conductor after the appliance is installed. Small fixed exposed metal parts, such as nameplates, are not required to be electrically connected to the terminal. 28 Screws and wiring
This chapter in GB4706.192 is applicable.
29 Creepage distance, electrical tunnel and through insulation distance CB All of the above provisions in GB 4706.1-92 are applicable.
30 Resistance to heat, flame and tracking resistance
GB 4706.36
Except for the above provisions, all of the above provisions in GB 4706.392 are applicable. 30.3 This clause is modified with the following content
The test humidity of the glow-wire test described in Appendix K is 650. 30.4 This clause adds the following content
The appliance shall be regarded as an appliance used when unattended 30.5 This clause adds the following content
Switches with moving contacts, except those that are manually operated and only operate during abnormal operation, shall be regarded as being used under extremely severe working conditions.
In addition, other insulating material parts are also regarded as being used under extremely severe working conditions unless their sealing conditions and placement are such that condensation contamination is unlikely to occur. In this case, the requirements for severe working conditions apply. 31 Rust prevention
This chapter in GB 4706.1-92 is applicable.
Radiation, toxicity and similar hazards
This chapter in GP 4706.1-92 is applicable. The appendix contents in GB 4706.36-1997
CB 4706.1-92 are applicable.2 This clause adds the following content:
Fixed appliances should be equipped with a terminal for connecting external isocentric conductors. The terminal should maintain effective electrical connection with all fixed exposed metal parts of the appliance and should be able to connect to wires with a nominal cross-sectional area of less than 10m2. The terminal should be located in a position to connect to a fixed grounding conductor after the appliance is installed. Small fixed exposed metal parts, such as nameplates, are not required to be electrically connected to the terminal. 28 Screws and wiring
This chapter in GB4706.192 is applicable.
29 Creepage distance, electrical tunnel and through insulation distance CB 4706.1-92 is applicable.
30 Heat resistance, flame resistance and tracking resistance
GB 4706.36
Except for the above contents, this chapter in GB4706.392 is applicable. 30.3 This clause is modified with the following content
The test humidity of the glow-wire test described in Appendix K is 650. 30.4 This clause adds the following content
The appliance shall be regarded as an appliance used without supervision. 30.5 This clause adds the following content
Switch devices with moving contacts, except those that are manually operated and only operate during abnormal operation, shall be regarded as being used under extremely severe working conditions.
In addition, other insulating material parts are also regarded as being used under extremely severe working conditions, unless their sealing conditions and placement are such that condensation contamination is unlikely to occur, in which case the requirements for severe working conditions apply. 31 Rust prevention
This chapter in GB4706.192 is applicable.
Radiation, toxicity and similar hazards
This chapter in GP 4706.1-92 is applicable. The appendix contents in GB 4706.36-1997
CB 4706.1-92 are applicable.2 This clause adds the following content:
Fixed appliances should be equipped with a terminal for connecting external isocentric conductors. The terminal should maintain effective electrical connection with all fixed exposed metal parts of the appliance and should be able to connect to wires with a nominal cross-sectional area of less than 10m2. The terminal should be located in a position to connect to a fixed grounding conductor after the appliance is installed. Small fixed exposed metal parts, such as nameplates, are not required to be electrically connected to the terminal. 28 Screws and wiring
This chapter in GB4706.192 is applicable.
29 Creepage distance, electrical tunnel and through insulation distance CB 4706.1-92 is applicable.
30 Heat resistance, flame resistance and tracking resistance
GB 4706.36
Except for the above contents, this chapter in GB4706.392 is applicable. 30.3 This clause is modified with the following content
The test humidity of the glow-wire test described in Appendix K is 650. 30.4 This clause adds the following content
The appliance shall be regarded as an appliance used without supervision. 30.5 This clause adds the following content
Switch devices with moving contacts, except those that are manually operated and only operate during abnormal operation, shall be regarded as being used under extremely severe working conditions.
In addition, other insulating material parts are also regarded as being used under extremely severe working conditions, unless their sealing conditions and placement are such that condensation contamination is unlikely to occur, in which case the requirements for severe working conditions apply. 31 Rust prevention
This chapter in GB4706.192 is applicable.
Radiation, toxicity and similar hazards
This chapter in GP 4706.1-92 is applicable. The appendix contents in GB 4706.36-1997
CB 4706.1-92 are applicable.
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