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Recently, the EU rapid alert system for non food products (RAPEX) communications torch recalls, because of a China manufacturing flashlight supporting 24V power adapter of the dielectric strength and clearance of non-compliance, may bring a shock hazard to the user, there is a big risk for personal injury, do not meet the EU LVD directive.

It is understood that the power adapter is power supply equipment transform small portable electronic equipment and electronic appliances, generally consists of a shell, a power transformer and rectifier circuit, according to the type of output can be divided into AC output type and DC output type, widely used in mobile phones, notebook computer, tablet computer, telephone composite machine, game machine, language repeater, Walkman and other equipment. In early 1997, for safety considerations, the International Electrotechnical Commission established the IEC61558 series standard, for power transformers, power supply units and similar equipment safety requirements, including protection against electric shock, fever, short-circuit and overload protection, insulation resistance, dielectric strength, structure, and electrical clearance and creepage distance sign etc..

In recent years, Europe and the United States on the area caused by the power supply adapter recall notification is frequent, only in 2012 reached 13, reporting the reasons involving fever, dielectric strength, structure, electrical clearance and creepage distance, marking instructions, reporting and these problems caused by the power adapter, the regulatory authorities involved are required the overall product recall. This has caused great losses to our country's export enterprises.

"This type of 24V power adapter is usually an external procurement component rather than the manufacturer's own production, and the manufacturer does not have the ability to verify whether the safety performance meets the requirements of the exporting country." The relevant staff of Ninghai inspection and Quarantine Bureau analysis, most of the products used by the power adapter are safe and ultra-low voltage products, but the safety of their use in the charging process must be paid great attention. First, make good purchasing power adapter, power adapter should choose the professional manufacturers, try to choose the country through the output of product certification type, power adapter for each batch of procurement provided the requirements for certification. Secondly, we must strictly check orders. Export enterprises should take the initiative to pay attention to the foreign power adapter safety standards, the latest standard of Europe and America on the dielectric strength, structure, creepage distance, clearance and other requirements, in order to client requirements of relevant standards strictly audit, find the defects in the design and the entrusted party shall timely communication, avoid blind production. Lest he lose in the product, "the source".