GB 15578-2008 English PDFUS$579.00 · In stock
Delivery: <= 5 days. True-PDF full-copy in English will be manually translated and delivered via email. GB 15578-2008: Safety requirements for resistance welding machine Status: Valid GB 15578: Historical versions
Basic dataStandard ID: GB 15578-2008 (GB15578-2008)Description (Translated English): Safety requirements for resistance welding machine Sector / Industry: National Standard Classification of Chinese Standard: J64 Classification of International Standard: 25.160.30 Word Count Estimation: 25,291 Date of Issue: 2008-09-24 Date of Implementation: 2009-08-01 Older Standard (superseded by this standard): GB 15578-1995 Regulation (derived from): Announcement of Newly Approved National Standards No. 16 of 2008 (No. 129 overall) Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China Summary: This Chinese standard specifies the general safety requirements for resistance welding machine, inspection rules and test methods. This standard applies to no more than GB/T 156 standard supply voltage specified in Table 1 or by a mechanical device driver resistance welding machines and similar processes used in welding and resistance welding machine controller (hereinafter referred to as controller), including individual and multi-station use welder. Controller and welding machine can form as a whole, can also be separated into individual devices, but regardless of what kind of structure, are applicable to this standard. GB 15578-2008: Safety requirements for resistance welding machine---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.Safety requirements for resistance welding machine ICS 25.160.30 J64 National Standards of People's Republic of China Replacing GB 15578-1995 Safety requirements for resistance welding machine Posted 2008-09-24 2009-08-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released Table of ContentsIntroduction Ⅲ 1 Scope 1 2 Normative references 1 3 Terms and definitions 4 Conditions 5 5 5 Test conditions 6 Electrical safety 6 7 thermal performance requirements 12 8 mechanical hazards Protection 15 Liquid cooling system 15 9 10 air system 16 11 hydraulic system 16 12 emergency stop operation member 16 colors User guide plate 13 and 16 Nominal voltage Annex A (informative) Power Supply System 19 Annex B (informative) shutdown time temperature projections 20ForewordThe standard Chapter 3 "Terms and definitions" are recommended, the rest are mandatory. This standard replaces GB 15578-1995. The main changes compared to the Standard and GB 15578-1995 are as follows. --- Expanding the scope of the standard. Original standard applies only to single-phase frequency AC resistance welding machine. --- Dielectric strength test voltage and temperature limits have been modified. --- Increasing the terms and definitions. --- Increased clearances and creepage distances. --- Adds to the protective conductor connection requirements. --- Increasing the power on/off switching device and leakage protection requirements. --- Increased component compliance requirements. --- Increased the use of the specification and requirements of the nameplate. --- Added Appendix A and Appendix B content. The Standard Appendix A and Appendix B are informative. The standard proposed by China Electrical Equipment Industrial Association. This standard by the National Standardization Technical Committee Welder (SAC/TC70) centralized. This standard drafting units. seven high-tech Co., Ltd., Tianjin, Guangzhou Hing Electric Co., Ltd., Shanghai Dongsheng Welding Group Co. The company, Chengdu Institute of electric welding machine, Chengdu tripartite Electric Co. Drafters of this standard. What, Liu Guoying, Hucheng Ping, Yinxian Hua NATIONAL NATURAL. This standard was first released in 1995, this is the 1st Amendment. Safety requirements for resistance welding machine1 ScopeThis standard specifies the general safety requirements, inspection rules and test methods for resistance welding machine. This standard applies to not more than GB/T 156 standard supply voltage specified in Table 1 or by a mechanical device driven resistance welding machines and the like Technology used in welding and resistance welding machine controller (hereinafter referred to as controller), including single and multi-station use welder. Resistance welding machine controller and can be composed as a whole, can also be separated into single devices, but no matter what form the structure taken are applicable to This standard. NOTE. This standard does not include electromagnetic compatibility (EMC) requirements.2 Normative referencesThe following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard. GB/T 156-2007 standard voltage (IEC 60038.2002, MOD) GB/T 2900.22-2005 Electrotechnical terminology Welder GB/T 3805-1993 extra low voltage (ELV) limits (eqv IEC 61201) GB/T 4207-2003 Fixed insulating materials under moist conditions index tracking of the measuring method and the proof tracking index compared (IEC 60112. 1979, IDT) GB 4208-2008 housing protection (IP Code) (IEC 60529.2001, IDT) GB 5226.1-2002 Safety of machinery electrical equipment Part 1. General requirements (IEC 60204-1.2000, IDT) GB/T 5465.2 Graphical symbols for electrical equipment (GB/T 5465.2-2008, IEC 60417DB.2007, IDT) GB/T 8366-2004 solder resistance welding machine for mechanical and electrical requirements (ISO 669.2000, MOD) GB 14050-1993 system grounding types and safety technical requirements GB/T 15543-1995 power quality three-phase voltage unbalance factor Insulation coordination within the GB/T 16935.1-1997 low pressure system equipment - Part 1. Principles, requirements and tests (idt IEC 60664- 1.1992) GB/T 16935.3-2005 within low-voltage systems Insulation coordination for equipment - Part 3. Using the coating, potting or molding for antifouling Protection (IEC 60664-3.2003, IDT) GB/T 17045-2006 General Protection against electric shock devices and equipment (IEC 61140.2001, IDT) GB/T 17211-1998 dry type power transformer loading guidelines (eqv IEC 60905. 1987) GB/T 20113-2006 Electrical insulation (EIS) heat rating (IEC 62114.2001, IDT) IEC 60050-151.2001 International Electrotechnical terminology (IEV) - Part 151. electromagnetic device IEC 60050-851.1991 International Electrotechnical terminology (IEV) - Part 851. Welding3 Terms and DefinitionsThis standard uses the following terms and definitions of IEC 60050 (151), IEC 60050 (851), GB/T 2900.22, GB 5226.1 And GB/T 16935.1 of the definition. 3.1 From the power source, the electrodes, the body and the control devices and other components, to complete the process of resistance welding equipment or the like the process. Note 1. You can be a separate device, it can be part of an integrated machinery and equipment. Note 2. The use of the word "resistance welding machine" hereinafter. 3.2 Similar to the resistance welding process on a mechanical device similar to resistance welding machine carried out, for example, resistance brazing, resistance brazing or resistive Fever. 3.3 Handheld, built-in transformers for resistance welding machines. 3.4 Work fixing, welding solder position by resistance welding machine. 3.5 Movement of the workpiece, mounted in a fixed position using a resistance welding machine. 3.6 Means for controlling the working process of resistance welding machine and welding parameters. 3.7 Test in accordance with a design scheme of the manufacturing one or more products is carried out to verify their compliance with the relevant standards. (IEV851-02-09) 3.8 After the production process or product made for each product test conducted to verify their compliance with relevant standards or code requirements. (IEV851-02-10) 3.9 Was visually observed to confirm the presence of the product does not comply with the relevant standards is obviously not a defect. 3.10 All conductive parts of the circuit by the welding current. 3.11 Resistance welding machine for welding operation and control for the power supply circuit protection circuits. 3.12 During welding current resistance welding machine output. 3.13 Open circuit in the external welding, resistance welding machine voltage on the output. 3.14 To determine the value of manufacturing operating conditions of components, devices or equipment and provisions. 3.15 Given load duration and total cycle time ratio. NOTE. this ratio between 0 and 1, can be expressed as a percentage. 3.16 The minimum distance through air between two conductive members. 3.17 Along the surface of insulating material minimum distance between two conductive parts. 3.18 The material can withstand without destruction of the maximum electric field strength. Breakdown occurs under the test conditions specified voltage divided by the applied voltage The distance between the two electrodes quotient. 3.19 Digital representation of the degree of contamination of the local environment. Note. In order to assess clearances and creepage distances, the following four established level of contamination of the local environment. a) Level 1 Pollution No pollution or only dry, non-conductive pollution, this pollution has no influence. b) Level 2 contamination Usually only non-conductive pollution occurs but occasionally a temporary conductivity caused by condensation. c) Level 3 Pollution Conductive pollution or dry, non-conductive pollution, but will become conductive due to condensation. d) level 4 Pollution Pollution conductive dust or rain and snow and the like can cause persistent conductivity. 3.20 Nearby insulated environment, has an important influence on determining the size of creepage distances. 3.21 Its value compared to tracking index (CTI) material is divided into the following four categories. Class Ⅰ material 600≤CTI Ⅱ type material 400≤CTI < 600 Ⅲa class material 175≤CTI < 400 Ⅲb class material 100≤CTI < 175 CTI values above with reference to GB/T 4207 publications. NOTE. For no tracking inorganic insulating material, such as glass or ceramic, etc., in order to achieve equivalent insulation, which does not require creepage distance greater than the corresponding Clearances. 3.22 A portion of the difference between ambient air temperature and the temperature of a resistance welding machine. 3.23 Between live parts of such equipment and exposed conductive parts basic insulation and exposed conductive parts with external protective conductor connection It means to be a link. Note 1. Ⅰ class member protection device can double or reinforced insulation. Note 2. Do not type Ⅰ and Ⅱ class protection and protection of certain classified national welding process used to be confused. 3.24 Anti-class device protection not only by direct contact with basic insulation, but with additional security measures to prevent live parts and accessible table Leakage between the faces. NOTE. Do not put the protection class Ⅰ and class Ⅱ welding process with the classification used in some countries to be confused. 3.25 Insulated live parts, which can cause damage to the risk of electric shock. 3.26 Individually insulated attached to the basic insulation to prevent electric shock accident occurred when the basic insulation damage. 3.27 From the basic and supplementary insulation consisting of insulation. 3.28 Individually insulated live parts, its performance is not less than double insulation against electric shock. Note. does not necessarily mean a single insulating layer, which can be composed of several layers, but that alone can not do the test as supplementary insulation or basic insulation. 3.29 Security (Extra Low) voltage Vp SEL In such a device by safety isolating transformers and power supply isolation circuit, the voltage between the conductors or between a conductor and earth does not exceed Over 50V AC or DC (ripple) voltage of 120V. Note 1. The maximum voltage is below 50V AC or DC (ripple) voltage of 120V can be specified in the special requirements, in particular by allowing direct contact with live portions When members. Note 2. When the power supply as a safety isolating transformer, any load voltage can not exceed voltage limits between full load and no-load. 3.30 Normal operation or the live lead conductors, including the neutral conductor N, but excluding a predetermined PEN conductor. 3.31 Can be conductive, but not necessarily of the current carrying part of the work. 3.32 Accessible, usually not charged, but the conductive parts in case of failure may be energized electrical equipment.4 Conditions of Use4.1 Environmental conditions Comply with the requirements of the standard resistance welding machines should be able to work under the following conditions. a) ambient air temperature range. 5 ℃ ~ 40 ℃ Relative humidity. 40 ℃ does not exceed 50% 20 ℃ not more than 90% Dust in the ambient air, acid, corrosive gases or substances, which are not more than the normal content of these substances due to the welding process generated except. b) the temperature of the cooling medium should not exceed. 1) cooling liquid inlet 30 ℃ NOTE. If you add antifreeze, the minimum ambient temperature can be reduced accordingly, so as not to solidification condition. 2) air-cooled 40 ℃ c) a liquid coolant inlet pressure range. 0.15MPa ~ 0.3MPa. d) a liquid coolant should conform to appropriate standards, the use of cooling water quality should be consistent with industrial water quality standard. e) Altitude should not exceed 1000m. Note. You can agree between manufacturers and users in different environmental conditions, resistance welding confidential agreed after tagging. 4.2 Power supply Power supply shall comply with the provisions of GB/T 156-2007 in. The quality of the power supply network should meet the following requirements. a) should be an actual voltage waveform of a sine wave; b) fluctuations in grid voltage does not exceed the rating of ± 10%; c) voltage fluctuations in the grid frequency does not exceed the rating of ± 1%; d) three-phase voltage unbalance factor ≤ ± 4%.5 Test conditions5.1 Test conditions It should be at ambient temperature 10 ℃ ~ 40 ℃, and the new, dry, install the full resistance welding machine for testing. Using liquid cooling Resistance welding machine shall be tested under the conditions specified by the manufacturer of the cooling liquid. 5.2 Measuring Instruments Measuring instrument accuracy or precision requirements. a) electrical measuring instruments. 0.5 (± 0.5% of full scale) Insulation resistance and dielectric strength measurement exceptions for measuring insulation resistance and dielectric strength of the accuracy of the instrument is not specified, but the measurement time You should consider the accuracy problems. b) welding current measuring instrument. 5 c) measuring of temperature. ± 2K d) pressure measuring instruments. Level 1 5.3 Type inspection Unless otherwise specified, test items required by this standard are type inspection items. Resistance welding machine should work with its matching, may affect the test results together with auxiliary equipment tested. Unless otherwise stated otherwise, all type of inspection should be carried out on the same resistance welding machine. 5.4 Routine Tests Each resistance welding machine should be made through all the routine tests. Test items are as follows. a) general visual inspection (see 3.9); b) is connected to the protective conductor (see 6.4); c) Insulation resistance (see 6.1.4); d) dielectric strength (see 6.1.5); e) rated load voltage (see 6.2.1); f) liquid cooling system (see 9); g) gas system (see 10); h) hydraulic system (see 11); i) general visual inspection (re-inspection (see 3.9)).6 Electrical Safety6.1 Insulation 6.1.1 General According to GB/T 16935.1-1997 provisions, the vast majority of resistance welding machines belong Ⅲ class over-voltage equipment, so should be used for at least 3 Environmental pollution in the design stage. Liquid cooling equipment should be considered liquid condensation problems. The component or components according to GB/T 16935.3-2005 require the use of coating, potting or molding for protection against pollution, permits the use of grade 2 Clearances and creepage distances of environmental pollution. If the resistance welding machine is designed, the warning should be based on this kind of resistance welding machine line to neutral voltage, to inform the resistance welding Phase four-wire machine only for neutral grounding system of the power supply system or the neutral point earthed single-phase three-wire power supply system. In addition to resistance welding machine welding circuit, the other part should meet GB/T 17045-2006 prescribed class Ⅰ or Ⅱ class protection. 6.1.2 CLEARANCE According to GB/T 16935.1-1997 provisions, using the basic insulation, additional insulation and reinforced insulation class Ⅲ overvoltage minimum electrical equipment Table 1 gap. Table 1 Ⅲ overvoltage class equipment minimum electrical clearance A voltage RMS / Basic or supplementary insulation reinforced insulation Rated impulse Test voltage Peak/V AC test Effective voltage Value/V Pollution Level Clearance/mm Rated impulse Test voltage Peak/V AC test Effective voltage Value/V Pollution Level Clearance/mm 50,800,566 0.2 10,015,001,061 0.5 0.8 15,025,001,768 1.5 1.6 0.5 0.8 1.5 1.6 Table 1 (continued) A voltage RMS / Basic or supplementary insulation reinforced insulation Rated impulse Test voltage Peak/V AC test Effective voltage Value/V Pollution Level Clearance/mm Rated impulse Test voltage Peak/V AC test Effective voltage Value/V Pollution Level Clearance/mm 3,004,000,282,836,000 4243 5.5 5.5 60,060,004,243 800,056,578 1000 8000 5,657,812,000,848,514 Note 1. This table is taken from the value of GB/T 16935.1-1997 in Tables 1 and 2. Note 2. For other pollution degree and overvoltage category can be found in GB/T 16935.1-1997. a See Appendix A. In determining the clearances non-conductive surfaces accessible, no matter GB 4208 publication prescribed test finger may touch to these tables Which parts of the face, these surfaces should be regarded as coated with a metal foil. Clearances can not be inserted into the law. Used voltage limiting device (such as a metal oxide varistor) resistance welding machine parts protection (such as an electronic circuit or component) between Clearances may be Class I Overvoltage determined (see GB/T 16935.1-1997). Values in Table 1 are also applicable to the input loop isolation (such as transformers) control loop. If the control circuit is connected directly to the input circuit, the input voltage should be used. According to GB/T 16935.1-1997 4.2 requires measuring clearances is checked or not. In the case can not be measured, can Table 1 given voltage resistance welding machine for impulse voltage test. When do impulse voltage test, each polarity is applied to at least three pulses per time interval between two pulses of at least 1s, according to the voltage value Specified in Table 1. Impulse voltage generator used should have a pulse width of the output waveform 1.2/50μs, and the output impedance of less than 500Ω. Table 1 can also be used in a given AC test voltage test, test duration of 3 cycles; can also be a value equal to the pulse Ripple free dc test voltage value, the polarity of each test three times per 10ms. Equipment shall withstand the test voltage without breakdown or flashover phenomenon. 6.1.3 creepage distance According to GB/T 16935.1-1997 provisions of the basic insulation, additional insulation and reinforced insulation minimum creepage distances are shown in Table 2. Table 2 Minimum creepage distance A voltage RMS / Basic or supplementary insulation reinforced insulation Pollution Degree Pollution Degree Material Category Material Category Material Category Material Category Material Category Material Category Ⅰ Ⅱ Ⅲ Ⅰ Ⅱ Ⅲ Ⅰ Ⅱ Ⅲ Ⅰ Ⅱ Ⅲ Ⅰ Ⅱ Ⅲ Ⅰ Ⅱ Ⅲ Creepage distance/mm creepage distance/mm creepage distance/mm creepage distance/mm creepage distance/mm creepage distance/mm 1 10 0.40 0.48 1.6 1.2 1.6 12.5 0.42 1.05 1.25 1.7 1.6 0.5 16 0.45 0.53 1.1 1.6 1.3 1.8 20 0.48 0.56 1.2 1.6 0.8 1.1 1.4 1.6 1.8 1.9 2.4 3 25 0.50 1.25 1.7 0.6 0.85 1.2 1.5 1.7 1.9 2 2.5 3.2 TABLE 2 (cont.) A voltage RMS / Basic or supplementary insulation reinforced insulation Pollution Degree Pollution Degree Material Category Material Category Material Category Materia......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB 15578-2008_English be delivered?Answer: Upon your order, we will start to translate GB 15578-2008_English as soon as possible, and keep you informed of the progress. The lead time is typically 3 ~ 5 working days. The lengthier the document the longer the lead time.Question 2: Can I share the purchased PDF of GB 15578-2008_English with my colleagues?Answer: Yes. The purchased PDF of GB 15578-2008_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.Question 3: Does the price include tax/VAT?Answer: Yes. 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