All technical content of this standard is mandatory. This standard is drafted in accordance with the rules given in GB/T1.1-2009. This standard replaces GB4824-2004 "Limits and Measurement Methods for Electromagnetic Disturbance Characteristics of Industrial, Scientific, and Medical (ISM) Radio Frequency Equipment". Compared with GB4824-2004, the main changes in this standard are as follows: - - Further clarification of the scope of application of the standard in Chapter 1; -—— Revised "Chapter 2 Normative References"; -—— Add four definitions to "Chapter 3 Terminology and Definitions": industrial, scientific, and medical (engineering and medical) (radio frequency energy) applications, resistive welding and auxiliary process equipment, low voltage, and small equipment; -—— The main changes in Chapter 6 Electromagnetic Disturbance Limits can be summarized as follows: modification of the limits for Class A high-power equipment (1 set of power dividing line~20kVA, 2 sets of power dividing line 75kVA), adding a 3m method limit for Class A equipment, but only applicable to small equipment—— In "7.5 Layout of Test Equipment", it is added: "For a 3m testing distance, the radiation evaluation of EUT cables should be limited to the internal connecting cables and power cables within the testing area (1.2m diameter, 1.5m ground height). Peripheral devices outside the testing area should be isolated from the testing environment or decoupling measures should be taken." - "7.6 Load Conditions of Test Equipment" Industrial equipment, microwave cookware, single zone or multi zone induction cookware, and welding equipment have been modified; -—— Add "7.7 Record of Measurement Results of Test Sites"; -—— Add "12.5 Measurement Uncertainty"; -—— Revised 'Appendix A Example of Equipment Grouping'; -—— Add "Appendix E CISPR Recommendations for Protecting Specific Regional Radio Services". This standard adopts the translation method equivalent to the International Electrotechnical Commission IEC/CISPR11:2010 "Limits and Measurement Methods for Radio Frequency Disturbance Characteristics of Industrial, Scientific and Medical Equipment", with only the following modifications: - The corresponding frequency bands in Appendix G: Sensitive Radio Service Frequency Band Allocation have been modified in accordance with the provisions of the "Regulations on Radio Frequency Division of the People's Republic of China (2010) (Order No. 16 of the Ministry of Industry and Information Technology)", Make it more suitable for the use of China's national conditions. The Chinese documents that correspond to the normative references in this standard are as follows: - GB/T4365-2003 Electrotechnical Terminology Electromagnetic Compatibility [IEC60050 (161), IDT] - GB/T6113.101-2008 Specification for Radio Disturbance and Immunity Measurement Equipment and Measurement Methods - Part 1-1: Radio Disturbance and Immunity Measurement Equipment and Measurement Equipment (IEC/CISPR16-1-1:2006, IDT) ——- GB/T6113.104-2008 Specification for Radio Disturbance and Immunity Measurement Equipment and Measurement Methods - Part 1-4: Radio Disturbance and Immunity Measurement Equipment - Auxiliary Equipment - Radiated Disturbance (IEC/CISPR16-1-4:2005, IDT) - GB/T6113.3-2008 Specification for Radio Disturbance and Immunity Measurement Equipment and Measurement Methods - Part 2-3: Radio Disturbance and Immunity Measurement Methods - Radiated Disturbance Measurement (IEC/CISPR16-2-3:2003, IDT) ——YY0505-2005 Medical Electrical Equipment Part 1-2: General Safety Requirements and Parallel Standards: Electromagnetic Compatibility Requirements and Tests (IEC60601-1-2:2001, IDT) - GB9706.4-2009 Medical Electrical Equipment Part 2-2: Special Safety Requirements for High Frequency Surgical Equipment (IEC60601-2-2:2006, IDT) - This standard is proposed and under the jurisdiction of the National Radio Interference Standardization Technical Committee (SAC/TC79). The drafting unit responsible for this standard is Shanghai Electric Appliance Science Research Institute. This standard was drafted by Shanghai Sanji Electronic Industry Co., Ltd., Beijing Medical Device Inspection Institute, Beijing General Electric Hualun Medical Equipment Co., Ltd., Guangdong Galanz Group Co., Ltd., Shanghai Electric Automation Design and Research Institute Co., Ltd., and Zunyi Product Quality Inspection and Testing Institute. The main drafters of this standard are Ye Qiongyu, Zhang Jun, Meng Zhiping, Ren Jie, Lu Yanhan, Qian Feng, Shou Jianxia, Huang Wenguang, Liu Yuan, Zheng Junqi, Lu Jianping, and Zhang Zongqin. The previous versions of the standards replaced by this standard have been released as follows: GB4824-1984, GB4824-1996, GB4824-2001, and GB4824-2004