Performance and Safety Improvement of Induction Motors based on Testing and Evaluation Standards

The induction motor,which converts electrical energy into mechanical energy,has been recognized as the cornerstone of industrialization.The rotor of an induction motor can be either a squirrel cage rotor or a wound-type rotor,both existing as magnetless topologies.Three-phase squirrel cage induction motors are frequently utilized in industrial drives because they are dependable,have high starting torque,are selfstarting and affordable.Single-phase induction motors,on the other hand,are commonly used for small loads such as domestic appliances in form of modest fans,pumps and electric power tools.In South Africa,there have been reports of fires and explosions resulting in live and property loss because of induction motors that have not been thoroughly tested or are incorrectly labelled in terms of ratings,electrical safety and performance.The goal of this study is targeted at preventing end-user injuries and failures caused by non-compliant induction motors,by evaluating locally manufactured/imported induction motors based on tests and evaluation from standards(IEC and SANS).The study is conducted using experimental procedures at the Explosion Prevention Technology and Rotating Machines(EPT and RM)laboratory,South African Bureau of Standards(SABS),South Africa.The main finding from the study shows differences in the nameplate characteristics of various induction motors which could have detrimental effects such as production and operational downtime in their end-use industries,at later stages.

Teaching Reform and Practice of Traditional Chinese Medicine Course Based on National Standard and Ideological and Political Theories Teaching in All Courses

Under the new situation,how to integrate the ideological and political theories teaching in all courses for Chinese medicine major and meet the requirements of national standards for teaching quality,improve the training quality of Chinese medicine talents and strengthen the connotative development of Chinese medicine higher education are urgent issues to be solved in Chinese medicine colleges.This paper introduces the practical experience of teaching reform of traditional Chinese medicine courses based on national standards of teaching quality and ideological and political theories teaching in all courses from the aspects of curriculum setting,teaching content,teaching methods and teaching practice,which can provide reference for teaching reform of other professional courses based on national standards of teaching quality and ideological and political theories teaching in all courses.

A Review of White Granulated Sugar Standard Development in China and Comparative Study on the Chinese White Granulated Sugar Standard with International Standard

The sugar standard implemented under specific historical conditions had played a positive role in standardizing the production of China's sugar industry,promoting the development of sugar industry and strengthening the quality management of sugar products.This paper systematically combs the development of national standard and industrial standard of white granulated sugar,and analyzes the technical requirements such as sensory indicators,physical and chemical indicators and health indicators.From the development of China's white granulated sugar product standard,the sucrose content of the same level of white granulated sugar has not been adjusted,while the standard for indexes other than sucrose content,have been improved to meet the needs of the development of China's sugar industry and the development of domestic and foreign trade.Through comparison with the international standard of white granulated sugar,it is concluded that China’s national standard of white granulated sugar has kept pace with international standard.

Uncertainty Evaluation for Comparison Result of National Radiometric Standardsand World Radiometric Reference

Theuse of data of National Radiometric Standardtook place in the WMO International Pyrheliometer Comparisons IPCXI to evaluate the expended uncertainty of the comparison resultbetweenN ational Radiometric Standards( NRS) and the World Radiometric Reference( WRR) in Davos/World Radiometric Center. The result of expended uncertaintyis 0.17%,which meets the requirements of the World Meteorological Organization( WMO) and has reached the world advanced level.In this paper,the method can be used as a reference and basis for evaluating the uncertainty of thecomparison results of the Provincial solar radiation standard.

Situation of China's solar water heater industry,related national standards,testing and the Golden Sun certification program

China is the largest solar water heater producer and market in the world.Despite the fast growth and an installed capacity that accounts for the majority of the global gross,China's per capita solar hot water capacity is still very low,implying a huge margin of market potential;and the recognition of the industry in the global market is handicapped by the scattered scale of production and inconsistent product quality.To ensure continued growth of China's solar water heating(SWH) industry,Chinese Government has established a series of national SWH standards,three national testing centers,and a certification program to lay the foundation for the development of the Golden Sun product labeling system.China General Certification Center(CGC) developed the Golden Sun product certification and labeling system on a pass/fail basis evaluating with established criteria.The system was designed to help manufacturers acclimate to explicit consistent requirements and to identify and fix the deficiencies in the design and execution of the program itself.Timely revision and integration of the national standards are recommended to accommodate the test procedures and requirements to new technologies and the evolving SWH market.Strict implementation of the Golden Sun certification and labeling system are suggested to avail improving the quality control and forging internationally reputable brands of Chinese solar water heating products.

Discussion on National Standard GB 6167"Methods for Testing the Performance of Airborne Particle Counter

Airborne pa rt icle counters are used widely to test the air cleanliness of cleanrooms. The cur rent Chinese national standard of airborne particle counter calibration, GB6167 -85, Methods for Testing the Performance of Dust Particle Counter, has kept the same for more than 10 years. It is necessary to be amended in time. This paper discusses the differences between Chinese airborne particle counter calibration procedure and other new calibration procedures in other countries, and points ou t the defects of current Chinese national standard.The draft of revised Chinese National Standard is also introduced. The new revised standard, Methods for Test ing the Performance of Airborne Particle Counter, covers two level calibrations: primary and secondary. Primary calibration procedure includes testing 6 kinds of performances:sample airflow rate, false counting, particle size accuracy and re solution, particle counting stability, counting efficiency and particle concentr ation limit. Secondary calibration is a relative comparing test method to verify the counting accuracy of calibrated airborne particle counters.Finally, how to keep the calibration traceability is suggested.

First Forum on China Casting Quality Standards & Overview of Revision History of China's National/Industrial Standards for Foundry Operations

Both national and local governments have been paying great attention to the work of industrial standardization with the enormous increase in international trade after China joined WTO. According to the standards revising plan of Standardization Administration Committee of China (SAC),TC54 has already revised a series of national standards and industrial standards for foundry operations,and proposed some new ones. As a result,some old fashioned standards containing low-level techniques have been gradually discontinued or replaced with new versions.……

Discussion on Ideological and Political Theories Teaching in Traditional Chinese Medicine Courses Based on National Standard for Teaching Quality

This paper analyzes the necessity and existing problems of ideological and political theories teaching in traditional Chinese medicine courses,and puts forward some suggestions,such as improving the ideological and political ability of professional teachers,perfecting the evaluation mechanism,and exploring ideological and political elements based on the characteristics of courses,so as to provide the basis for ideological and political theories teaching in traditional Chinese medicine courses under the National Standard for Teaching Quality.

Preliminary Study on the Training Mode of Chinese Pharmacy Professionals Based on the National Standard of Teaching Quality

With the promulgation of the National Standard for the Teaching Quality of Undergraduate Majors in Ordinary Colleges and Universities, the state has made clear regulations on the standard for the cultivation of Chinese pharmacy talents. Based on their own actual conditions, major colleges and universities have implemented different talent training modes, including talent training modes of running talent classes, "2+1+1", "Chinese Medicine Research Practice Class", employment-oriented professional talent training mode, three-level three-type diversified talent training mode, and talent training mode oriented with adapting to the characteristics of ethnic regions. Various talent training modes have different training objectives, and corresponding training programs are formulated to meet the requirements of the National Standard for the Teaching Quality of Undergraduate Majors in Ordinary Colleges and Universities. In addition, according to the notice on Solidly Promoting Labor Education into the "National Standard for the Teaching Quality of Undergraduate Majors in Ordinary Colleges and Universities" issued by the Department of Higher Education of the Ministry of Education, the introduction of labor education to the teaching of Chinese pharmacy majors will be a trend, and Chinese pharmacy professionals are required to achieve comprehensive and coordinated development of morality, intelligence, physique, beauty, and labor. How to integrate labor education with high quality and high efficiency into the training of Chinese pharmacy professionals is a problem that major universities will think about.

Announcement of Newly Approved National Standards of P. R. China

General Administration of Quality Supervision, Inspection and Quarantine of P.R. China and Standardization Administration of China have approved the following 220 national standards and publicize now.……

Developing ISO International Standards for the Animal and Vegetable Fats and Oils Sector

Increasing volumes of oils and fats are produced annually with a large section that are traded internationally. The International Organization for Standardization(ISO) body develops international standards covering almost all aspects of technology and manufacturing with 23,882 standards currently published. Standards in the animal and vegetable fats and oils sector is developed by Technical Committee ISO/TC 34, Food products, Subcommittee SC 11, Animal and vegetable fats and oils. Standards are developed through consensus by national members that represent ISO in their country. Each Standard is developed within a determined timeframe and goes through various pre-determined stages such as project proposal, development, national voting and commenting on the draft Standard to final publication. ISO TC34/SC11 Standards range from sampling of oils and fats, sample preparation to analysis of its composition, the minor components, and quality and identity parameters as well as contaminants. The analysis results are used by industry for product development, labelling, research and to provide peace of mind for consumers on its safety. An important future trend is the focus on the safety concerns from either environmental contamination(e.g. mineral oils) or processing contaminants such as esters of 3-MCPDs(3-monochloropropane-1,2-diol or 3-chloropropane-1,2-diol).

Japanese National Safety Standards for Electrical Equipment

I am working in Japan electrical safety & environment technology laboratory,which is called JET for short. In JET, we are carrying out the safety test of electrical equipmentaccording to Japanese domestic standards or IEC standards. And in my section, our stuff is draftingsome national safety standards harmonized with IEC in cooperation with the government. The standardsare applied for the mandatory regulation and other schemes.

First Batch of Topics of “Key Technical Standard Promotion Project” tarted,270 Important National Standards or Professional Standards Will Be Prepared

At the first working meeting of the 'Key Technical Standard PromotionProject', an important project of the national scientific and technical support plan during the'11th Five Year' held recently in Beijing, the first group of 11 research topics for the 'KeyTechnical Standard Promotion Project' was formally introduced. According to Ms. Yu Xinli, who is incharge of the project as Deputy Director of the China National Institute of Standardization, theproject comprises four aspects: the international standards key breakthrough project, the technicalstandards promotion project of adapting technical trade measures, the technical standards innovationproject of basic public welfare, and the technical standard enhancement project of public security.

Announcement of Newly Approved National Standards of P.R.China 2010 No.3(total No.158)

General Administration of Quality Supervision,Inspection and Quarantine of P.R.China and Standardization Administration of China have approved the following 163 national standards and 81 national reference materials.