Beijing time on June 1 news, learned from the National Standardization Management Committee, "Household and similar use plugs and sockets - Part 2: Special requirements for converters," the national standard after the first anniversary of the promulgation and implementation, from June 1 this year, The country will impose new standards for power converters, and large-scale universal products will be successively discontinued.
It is understood that “Household and Similar Plugs and Sockets Part 2: Special Requirements for Converters†was issued by the General Administration of Quality Supervision, Inspection and Quarantine and the Chinese National Standardization Administration Committee on December 30, 2008.
The standard gives clear specifications for product appearance, size, and performance. The National Standardization Committee approved the new standard in 2010. The domestic and similar plug and socket converter products produced on June 1, 2010 must comply with the standard. "Household and similar plugs and sockets - Part 2: Particular requirements for converters" - Household and similar use plug-socket converters that do not comply with this requirement are unqualified products.
After the promulgation of the new national standard, the relevant departments allowed the market to consume inventory in the transition period of one year. By May 31 of this year, the transitional period ended. On June 1, the original large-scale universal power converter will not allow sales.
One of the drafters of the standard and director of the Guangzhou Weike Detection Technology Research Institute Luo Huaiping said in an interview with Tencent Appliances that the products used in people’s daily lives today are basically universal jack products.
Luo Huaiping said that although it was theoretically stipulated that products that did not conform to the new national standard were unqualified products since June of last year, most companies continued to produce. According to the plan, all-purpose products can be used up for about half a year. However, due to the fact that the company has not stopped production, large-scale universal products still occupy the majority of the current market.
Wen Xiaojuan, product manager of HuntKey Power Converters, said that the fundamental reason why most products on the market have not been improved in accordance with relevant requirements is that most small businesses are concerned about the implementation of new national standards, so all companies are waiting to see each other. “The current new standards are thorough. The implementation depends on the quality supervision of products by the state agencies and the leading role of the leading companies in the industry."
It is understood that the Bulls outlet in Shangchao currently has more than half of the products are in line with the new national standard products, breaking the old standard outlets in China Resources have been all off the shelves, but still in the United States sales.
Wen Xiaojuan revealed that if the quality inspection department can not increase the inspection and punishment, then many companies will continue to produce products that do not meet the new standards, because although the regular business super channel is difficult to enter, but the county supermarket and hardware wholesale market supervision is not Strong, so the old standard products will likely continue to be sold in this channel, then the authority of the country's mandatory standards will be challenged.
According to the relevant personnel of China Hardware Industry, Chemical Industry and Commerce Association, previous products have potential safety hazards such as fire, and the contact area between the plug and socket of the new national standard power converter is larger, the contact is more tight, and heat can be effectively prevented, and the electric shock prevention performance is better. This will greatly increase the safety performance of the socket product. In addition, the person in charge of the relevant company said that the price of the product will not be used to raise it.
Semiconductor Fuse And Ferrite
Fuse refers to an electric appliance that, when the current exceeds the specified value, melts the fuse and disconnects the circuit with the heat generated by itself.When the current exceeds the specified value for a period of time, the fuse melts and disconnects the circuit with the heat generated by the fuse itself.A current protector made from this principle.The fuse is widely used in high and low voltage power distribution system and control system as well as power equipment.
Ferrite is a metal oxide with ferrous magnetism.As far as electrical properties are concerned, the resistivity of ferrite is much larger than that of single metal or alloy magnetic materials, and it has higher dielectric properties.Ferrite magnetic energy also shows high permeability at high frequencies.As a result, ferrite has become a non-metallic magnetic material widely used in the field of high frequency and weak current.Due to the low ferrite magnetic energy stored in the unit volume, saturated magnetic induction strength (Bs) and low (usually only pure iron 1/3 ~ 1/5), and thus limits its higher requirements in the low-frequency magnetic energy density in the field of high voltage and high power applications.
Semiconductor Fuse and Ferrite,Fuse Cutout, Protection Fuse, Square Fuse, Fuse Link, Ceramic Fuse
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