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Delivery: <= 8 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 42125.4-2024: Safety requirements for electric equipment for measurement, control, and laboratory use - Part 4: Particular requirements for climatic and environmental testing and other temperature conditioning equipment Status: Valid
Basic dataStandard ID: GB/T 42125.4-2024 (GB/T42125.4-2024)Description (Translated English): Safety requirements for electric equipment for measurement, control, and laboratory use - Part 4: Particular requirements for climatic and environmental testing and other temperature conditioning equipment Sector / Industry: National Standard (Recommended) Classification of Chinese Standard: N09 Classification of International Standard: 19.080 Word Count Estimation: 67,697 Date of Issue: 2024-10-26 Date of Implementation: 2026-11-01 Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration GB/T 42125.4-2024: Safety requirements for electric equipment for measurement, control, and laboratory use - Part 4: Particular requirements for climatic and environmental testing and other temperature conditioning equipment---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT42125.4-2024 ICS 19.080 CCSN09 National Standard of the People's Republic of China Safety requirements for electrical equipment for measurement, control and laboratory use Part 4.Climatic and environmental tests and other temperatures Special requirements for regulating equipment equipment,IDT) Released on October 26, 2024, implemented on November 1, 2026 State Administration for Market Regulation The National Standardization Administration issued Table of ContentsPreface III Introduction IV 1 Scope and Purpose 1 2 Normative references 2 3 Terms and Definitions 2 4 Experiment 7 5 Signs and Documents11 6 Protection against electric shock 19 7.Protection against mechanical hazards 20 8 Mechanical stress resistance 21 9 Prevent the spread of fire 22 10 Temperature limits and heat resistance of equipment 23 11 Protection against hazards from fluids and solid foreign matter 26 12 Protection against radiation (including laser sources), sound pressure and ultrasonic pressure 37 13 Protection against released gases and substances, explosions and implosions 38 14 Components and Assemblies 39 15 Protection by interlocking device 40 16 Hazards caused by application 42 17 Risk Assessment 42 Appendix 43 Appendix K (Normative) Insulation requirements not covered in 6.7 44 Appendix AA (Informative) Useful Symbols 45 Appendix BB (Informative) Protection of Personnel in Walk-in Equipment 48 Appendix CC (Informative) Safety Requirements for Components and Pipes 49 Appendix DD (informative) Equipment containing flammable refrigerants - Information and marking requirements 53 Appendix EE (Normative) Non-sparking "n" type electrical devices 55 Reference 56 Preface This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1.Structure and drafting rules for standardization documents" Drafting. This document is Part 4 of GB/T 42125 "Safety requirements for electrical equipment for measurement, control and laboratory use". The following parts have been published. --- Part 1.General requirements; --- Part 2.Particular requirements for laboratory equipment for heating materials; --- Part 3.Particular requirements for refrigeration equipment; --- Part 4.Particular requirements for climate and environmental tests and other temperature regulation equipment; --- Part 5.Particular requirements for laboratory centrifuges; --- Part 7.Safety requirements for hand-held and hand-operated probe assemblies for electrical measurement and test; --- Part 10.Particular requirements for insulation resistance measurement and dielectric strength test equipment; --- Part 14.Particular requirements for automatic and semi-automatic equipment for laboratory use for analytical and other purposes; --- Part 18.Particular requirements for control equipment; --- Part 19.Particular requirements for electric control valve actuators. This document is equivalent to IEC 61010-2-012.2019 "Safety requirements for electrical equipment for measurement, control and laboratory use Part 2-012 Part 3.Special requirements for climate and environmental tests and other temperature regulation equipment. The following minimal editorial changes have been made to this document. --- In order to coordinate with the existing standard, the name of the standard is changed to "Safety requirements for electrical equipment for measurement, control and laboratory use Part 4. Special requirements for climate and environmental testing and other temperature regulation equipment"; --- Deleted the informative Appendix L "Term Index". Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents. This document was proposed by the China Machinery Industry Federation. This document is under the jurisdiction of the National Technical Committee for Safety Standardization of Measurement, Control and Laboratory Electrical Equipment (SAC/TC338). This document was drafted by. Hangzhou Xuezhongtan Constant Temperature Technology Co., Ltd., Mechanical Industry Instrumentation Comprehensive Technology and Economic Research Institute, Beijing Printing Brush College, Beijing Medical Device Inspection Institute (Beijing Medical Bioprotection Equipment Inspection and Research Center), Fujian Shunchang Hongrun Precision Instrument Co., Ltd., China Electronics Technology Standardization Institute, China Quality Certification Center, China Silian Instrument Group Co., Ltd., China Qualified National Accreditation Center for Assessment, Fujian Shangrun Precision Instrument Co., Ltd., Shanghai Instrument and Automation System Inspection and Testing Institute Co., Ltd., Qingdao Hai Er Biomedical Co., Ltd., Hangzhou Yungu Technology Co., Ltd., Liaoning Institute of Metrology, Shanghai Metrology and Testing Technology Institute, Sichuan Provincial Institute of Drug Control (Sichuan Provincial Medical Device Testing Center), Guangdong Provincial Medical Device Quality Supervision and Inspection Institute, Guangzhou Lightia Lighting Co., Ltd., TUV Rheinland Testing and Certification Services (China) Co., Ltd., MicroPort Investment Holdings Co., Ltd., Zhengzhou Great Wall Science and Technology Trade Co., Ltd., Fujian Product Quality Inspection Institute, Hangzhou Qi Intelligent Source Technology Co., Ltd., Zhejiang Keen Experimental Equipment Co., Ltd. Co., Ltd., Hunan Yanjian Intelligent Technology Co., Ltd., Wenzhou Luxury Auto Parts Co., Ltd., Hunan Meiyu Technology Co., Ltd., Wuxi Lambton Technology Co., Ltd., Guangdong Jinding Optical Technology Co., Ltd., Danbo Instrument (Kunshan) Co., Ltd., Jiangsu Youshang Environmental Engineering Co., Ltd. Co., Ltd., Xiamen Yuanqian Electronics Co., Ltd., Suzhou Beiyin Technology Co., Ltd., Anhui Wanrui Refrigeration Technology Co., Ltd., Hangzhou Meiyi AUTOMATION LIMITED. The main drafters of this document are. Xu Yueming, Shang Yujia, Kong Jiayi, Liu Xiaojing, Liang Zhenshi, Chen Zhiyang, Guo Jianyu, Hu Nan, Li Jinlan, Ni Jia, Wang Liwen, Ge Jian, Zhang Yixiang, Wang Yi, Ding Yun, Liang Guoding, Feng Jian, Zhang Yi, Guan Hui, Fan Xiang, Lü Henan, Mai Miao, Ding Yi, Wang Chengying, Feng Lei, Wang Jiakai, Zhu Nairong, Xu Yijun, Wu Jinwei, Yuan Lijun, Jiang Hanxiong, Ye Zhiyue, Sun Dahai, Bai Bing, Chen Xifu, Luo Shuijin, Ding Changjian, Mei Lihua, Zhang Kaifeng, Xie Weimin, Zhang Xuehua, and Ye Zhizeng.introductionGB/T 42125 "Safety requirements for electrical equipment for measurement, control and laboratory use" is planned to consist of 20 parts. --- Part 1.General requirements. The purpose is to specify the general safety requirements of electrical equipment for measurement, control and laboratory use and their accessories Require. --- Part 2.Particular requirements for laboratory equipment for material heating. The purpose is to specify the special requirements for laboratory equipment for material heating. Safety requirements. --- Part 3.Particular requirements for refrigeration equipment. The purpose is to specify the special safety requirements for refrigeration equipment used in measurement, control and laboratory Require. --- Part 4.Climate and environmental tests and special requirements for other temperature regulation equipment. The purpose is to specify climate and environmental tests Special safety requirements for testing and other temperature regulating equipment. --- Part 5.Particular requirements for laboratory centrifuges. The purpose is to specify special safety requirements for laboratory centrifuges. --- Part 6.Particular requirements for test and measuring circuits. The purpose is to specify special safety requirements for test and measuring circuits. --- Part 7.Safety requirements for hand-held and hand-operated probe assemblies for electrical measurement and testing. The purpose is to specify the safety requirements for hand-held and hand-operated probe assemblies. Safety requirements for head assemblies and related accessories. --- Part 8.Particular requirements for hand-held and hand-operated current sensors for electrical measurement and testing. The purpose is to specify the requirements for hand-held and hand-operated current sensors. Special safety requirements for current sensors. --- Part 9.Particular requirements for household and professional handheld multimeters capable of measuring mains voltage. Particular safety requirements for hand-held multimeters for household and professional use for measuring mains supply voltage. --- Part 10.Particular requirements for insulation resistance measurement and dielectric strength test equipment. The purpose is to specify the output voltage AC Safety requirements for equipment used for insulation resistance measurement and dielectric strength testing at 50 V or DC 120 V and above. --- Part 11.Particular requirements for sterilizers and washer-disinfectors for processing medical materials. Particular safety requirements for sterilizers and washer-disinfectors. --- Part 12.Particular requirements for laboratory mixing and stirring equipment. The purpose is to specify electric stirring equipment used for mechanical stirring and stirring Particular safety requirements for laboratory equipment and its accessories. --- Part 13.Particular requirements for laboratory atomic spectrometers with thermal atomization and ionization. Particular safety requirements for atomization and ionization atomic spectrometers. --- Part 14.Particular requirements for automatic and semi-automatic equipment for laboratory analysis and other purposes. The purpose is to specify the Particular safety requirements for automatic and semi-automatic equipment for analytical and other purposes. --- Part 15.Particular requirements for cabinet X-ray systems. The purpose is to specify special safety requirements for cabinet X-ray systems. --- Part 16.Particular requirements for in vitro diagnostic (IVD) medical devices. The purpose is to specify the intended use for in vitro diagnostic medical purposes Special requirements for medical devices. --- Part 17.Particular requirements for equipment used by children in educational institutions. The purpose is to specify the requirements for the use of equipment by student operators in educational institutions. Particular safety requirements for electrical equipment and accessories. --- Part 18.Particular requirements for control equipment. The purpose is to specify the special requirements and related requirements for control equipment used in industrial environments identification test. --- Part 19.Particular requirements for electric control valve actuators. The purpose is to specify the requirements for electric control valve actuators installed in industrial processes or discrete control Safety requirements for electric control valve actuators and solenoid coils in environments. --- Part 20.Particular requirements for industrial communication circuits and communication port interconnections. The purpose is to specify the requirements for installation in process or discrete control Particular safety requirements for industrial communication circuits in an environment. Note. The correspondence between each part and the IEC 61010 series standards is as follows. --- Part 1 corresponds to IEC 61010-1; --- Part 2 corresponds to IEC 61010-2-010; --- Part 3 corresponds to IEC 61010-2-011; --- Part 4 corresponds to IEC 61010-2-012; --- Part 5 corresponds to IEC 61010-2-020; --- Part 6 corresponds to IEC 61010-2-030; --- Part 7 corresponds to IEC 61010-031; --- Part 8 corresponds to IEC 61010-2-032; --- Part 9 corresponds to IEC 61010-2-033; --- Part 10 corresponds to IEC 61010-2-034; --- Part 11 corresponds to IEC 61010-2-040; --- Part 12 corresponds to IEC 61010-2-051; --- Part 13 corresponds to IEC 61010-2-061; --- Part 14 corresponds to IEC 61010-2-081; --- Part 15 corresponds to IEC 61010-2-091; --- Part 16 corresponds to IEC 61010-2-101; --- Part 17 corresponds to IEC 61010-2-130; --- Part 18 corresponds to IEC 61010-2-201; --- Part 19 corresponds to IEC 61010-2-202; --- Part 20 corresponds to IEC 61010-2-203. IEC 61010-2-012, together with IEC 61010-2-010 and IEC 61010-2-011, addresses the application of heating and Special hazards during cooling process. The three documents are organized as follows. IEC 61010-2-010 specifically addresses the hazards associated with equipment containing heating systems IEC 61010-2-011 specifically addresses the hazards associated with equipment containing refrigeration systems IEC 61010-2-012 Specifically addresses the hazards associated with combined equipment that contains both heating and cooling systems that interact with each other. equipment and heating or cooling systems alone present additional or more severe hazards; this document also addresses the Hazards associated with handling materials exposed to elements such as radiation, high humidity, carbon dioxide, and mechanical movement Guidelines for Correctly Selecting 3 Related Documents For equipment that only includes a material heating system and does not include a cooling system or other environmental factors, it must meet the requirements of IEC 61010-2-010. IEC 61010-2-011 and IEC 61010-2-012. Equipment for material heating systems or other environmental factors must meet the requirements of IEC 61010-2-011 and does not need to meet the requirements of IEC 61010-2-010 and However, for equipment that contains both a material heating system and a cooling system, or is used in the intended application When handling materials that introduce significant heat into the refrigeration system, the selection process is more efficient than evaluating both systems separately (controlling temperature, see Figure 102). If the interaction between the heating and cooling functions creates additional or more serious hazards, If the use of the device does not create additional or more serious hazards, then the two functions must meet the requirements of IEC 61010-2-010 and IEC 61010-2-011 respectively. requirements; on the contrary, if additional or more serious hazards are generated, or if the equipment also contains other elements of material processing, the equipment shall meet The requirements of IEC 61010-2-012 are met, rather than the requirements of IEC 61010-2-010 or IEC 61010-2-011. What are the dangers of refrigeration systems? The refrigeration system consisting of a motor-compressor, a condenser, an expansion device and an evaporator (as shown in Figure 101) includes but is not limited to the following. Typical hazards described. ---The maximum temperature of the low-pressure side of the motor-compressor (return air temperature). The motor-compressor uses refrigerant to cool the motor, and it is necessary to ensure The maximum temperature on the low voltage side shall not exceed the insulation rating of the motor under the most unfavorable conditions. ---The maximum pressure at the low-pressure side inlet of the motor-compressor. The motor-compressor housing directly bears this pressure, so the motor- The compressor casing must be designed to withstand the most adverse pressure conditions while providing suitable pressure vessels. Safety margin. --- Maximum temperature on the high-pressure side of the condenser. Under the most unfavorable conditions, if the operator is exposed to this temperature or the insulation deteriorates, the condenser The temperature on the high pressure side of the device may cause a dangerous temperature change. --- Maximum pressure at the high-pressure side outlet of the motor-compressor. from the refrigerant components downstream of the motor-compressor to the expansion device Directly bear the pressure, so the design rating of these components must ensure that they can withstand the pressure under the most adverse conditions, and at the same time The force container provides an appropriate safety margin. ---Maximum control temperature. the soaking temperature condition for releasing heat, which may affect the maximum temperature of the low-pressure side of the motor-compressor and If the operator is exposed to such temperature or the insulation deteriorates, it will cause a temperature hazard. Whether it is the overall heating function of the equipment or the heat release of the cooled material, the impact under the most unfavorable conditions needs to be evaluated. --- When the refrigeration system is operating under the most unfavorable conditions, including any defrost cycle that may be applicable, the equipment should establish a stable current consumption. The most unfavorable conditions of the equipment need to be determined, including the most unfavorable normal use conditions and the most unfavorable test results under single fault conditions. Figure 101 Schematic diagram of a refrigeration system including a condenser The selection process is shown in Figure 102. Figure 102 Selection process flow chart This document should be combined with GB/T 42125.1-2024 "Safety requirements for electrical equipment for measurement, control and laboratory use Part 1.General Requirements》. The part marked "applicable" in this document indicates that the corresponding clauses of GB/T 42125.1-2024 are applicable to this document; The part marked "replace" or "modify" indicates that the terms of this document shall prevail; the part marked "add" in this document indicates that in addition to complying with In addition to the corresponding clauses of GB/T 42125.1-2024, the clauses added in this document must also be complied with. The number of the clauses added to this document begins with 101, for example, 3.1.101.The number of the appendixes added to this document begins with AA, for example, Such as Appendix AA and Appendix BB. Safety requirements for electrical equipment for measurement, control and laboratory use Part 4.Climatic and environmental tests and other temperatures Special requirements for regulating equipment 1 Scope and Purpose Except for the following, Chapter 1 of GB/T 42125.1-2024 is applicable. 1.1.1 Equipment to which this document applies replace. Replace the second paragraph with the following. This document specifies the safety requirements for electrical equipment of categories a) to c) and their accessories, regardless of their intended use, provided that the equipment contains the following Next one or more characteristics. --- A cooling system that is affected or influenced by a self-contained heating function, making the combined heating and cooling system different from a single heating or cooling system. The system presents additional and/or more severe hazards than the ---In the intended application, the material to be processed will introduce significant heat into the refrigeration system, causing the refrigeration system to There may be additional and/or more severe hazards than when operating with --- Irradiation of the material to be processed may create additional hazards. --- Exposing the material to be treated to high humidity, carbon dioxide, salt spray or other substances may create additional hazards. --- Mechanical movement functions create additional hazards. --- Provide conditions for operators to enter the operating area to load or unlo......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 42125.4-2024_English be delivered?Answer: Upon your order, we will start to translate GB/T 42125.4-2024_English as soon as possible, and keep you informed of the progress. The lead time is typically 5 ~ 8 working days. 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