Rotating Electrical Machines - International Certification And Testing,

After China joined in WTO, the export of Chinese electrical machine had to face different kinds of technical barriers instead of trade barriers. There is a dilemma bottleneck: one side is the international markets need a great deal of cheaper products; the other side is Chinese manufacturers urgently hope to enter the international markets. So it's more important to do the leading research on international certifications and the test technology for electrical machines. So it's more important to test the electrical machines per specified standards and test methods from the certification rules, obtain the most practical support on technology to settle the bottleneck problem.As the main machine of energy consumer and most widely used machine, the Energy Efficiency Certification and Safety Certification of the Electrical Machine are focused by all people in varies fields of the world. Also it is the basic requirements of electrical machines to enter North America and European mackets. But it is complicated for users to understand all of certification rules. For this reason, this paper systematicly describes American conformity assessments, standards UL (Underwriters Laboratories) and Energy Efficiency certifications, Energy Efficiency and CE (Conformity with European (Demand)) , CE certification in EU and the certification rules in China. Furthermore the paper analyzes and compares the American and European certification systems with China's. Through comparing of various certication systems, programs and standards, domestic management departments or manufacturers will understand the difference between different countries. So I hope this paper can provide help for them to improve the quality of the products, standards level and rules of Chinese certification system.