title: COSEL Power Supply, Noise Filter 2025 Product Catalog

Summary

COSEL Power Supply, Noise Filter 2025 Product Catalog

2Selection of EMI Filters9Safety Standardsa. General description of safety standardsThe international standards consist of IEC standardswhich concern the electrical fields, and ISO standardswhich concern the non-electrical fields.? IEC(International Electrotechnical Commission)Standardization organization for standards relatedto the electrical fields; its headquarters is locatedin Switzerland.It releases technical standards for electricity basedon the latest sciences and technologies, and eachcountry develops its own specific safety standardsbased on the correspondingIEC standards.? CISPR(Comite International Special desPerturbations Radioelectriques=International Special Committeeon Radio Interference)One of IEC’s special committees; it was establishedwith the aim to integrate standards such as allowablevalues and measurement methods for interferingwaves causing radio communication failures, andincludes a standardization committee for EMC(Electro Magnetic Compatibility).? European Standard / EN Standard(Europaische Norm=European Standard)The EN Standard was created based on the IEC andCISPR standards, and consists of items almostsimilar to those in both standards.A unique number is assigned to each standard.(Exampla:IEC939 EN60939)[An example of Certification Authoritiesin Europe based on EN Standard]VDETUVDEMKOSEMKOEN Standard:Europe standardsignGermanyGermanyDenmarkSwedenSequencenumberStandard classificationnumberStandard classification number Reference standardsEN50000 seriesGeneral European standardsEN55000 seriesCISPR standardsEN60000 seriesIEC standards? 765 ?? ENEC(European Norm Electrical Certification)The safety approval mark in Europe that enablesproducts to smoothly be delivered among all theEU signatories, EFTA (European Free Trade Area),and East European countries.Electronic products that are authorized to bear theENEC mark do not need to be subjected to applicationprocedures among the signatories. It provides abenefit of eliminating the need to obtain approvalfrom each signatory to which they are distributed.The ENEC mark is intended to apply to productssuch as lighting equipment, transformers, informationprocessing equipment, switches and EMI filters.EU signatories…Germany, UK, Italy, Denmark,and 24 other countriesEFTA………Iceland, Norway, Switzerland,and LichtensteinEast European…Ukraine, Estonia, Belorussia,countries Moldova, Latvia, and Lithuania? North AmericaUL (Underwriters Laboratories Inc.)A test organization established in 1894 by theElectrical Bureau of the National Board of FireUnderwriters. Since then, it has been performingcompliance tests on various electric products.CSA (Canadian Standard Association)A non-profit standardization organization establishedin Canada in 1919. Each state law in Canadarequires that electric equipment that needs to beconnected to a public power source conforms to theCSA standards.ULCSAAs the US and Canada have signed MRA (MutualRecognition Agreement), mutual approval can beobtained. If UL verifies that a certain electric productconforms to the CSA standard, or to the UL andCAS standards, the product is authorized to bear thefollowing approval marks:CSAUL,CSAb. Safety standards for EMI filtersDifferent products may conform to different safetystandards and bear different approval marks (for usein different countries). Check the approved safetystandards when considering purchasing them.IEC939EN60939UL1283C22.2 No.8USACanadaInternational standardEUUSACanadac. CCC approval from ChinaEMI filters do not fall within the scope of CCC.(as of November 2011)IECENULCSATechnical Notes-7EMI/EMCFilter