Multi-brand switches and sockets are unqualified

Xinjing News (Reporter Feng Jing) recently, the official website of the Henan Provincial Bureau of Industry and Commerce released the results of spot checks on the quality of switch and socket commodities in the circulation field in 2018. The results showed that 23 batches of products were unqualified. Among them, 9 batches of switches and 14 batches of sockets are unqualified. Schneider, Siemens and other brand products "on the black list".

Unqualified products involving anti-electric shock protection, heat resistance and other items

In this inspection, the reporter found that the products with the nominal trademarks of sdnnaiolef, Siemens, Guipu, and SANSHE Sanshe Electric Appliances were all found to be unqualified.

The results showed that a switch with a nominal trademark of sdnnaiolef, a nominal manufacturer of Fuzhou fashion schneider electric co., ltd. and a specification and model of "GN-1K2-10" failed the "mark" test. A 2. three-pole socket with a nominal trademark of "Siemens" and a nominal manufacturer of "Huizhou Siemens Home Appliance Co., Ltd." and a model of "86-M70 Series 10A 250V" was tested for "mark". Protection against electric shock; mechanical strength; Heat resistance; The five items of "abnormal heat resistance, flame resistance and electrical tracking resistance" of insulating materials are unqualified. A B15 series (socket) with a nominal trademark of sdnnaiolef and a nominal manufacturer of Fuzhou fashion schneider electric co., ltd. was tested as unqualified for many items such as "anti-electric shock protection, heat resistance, creepage distance, electrical clearance and distance through sealant, abnormal heat resistance, flame resistance and electrical tracking resistance of insulating materials.

This time, the main unqualified items of the switch are: abnormal heat resistance, flame resistance and electrical tracking resistance of signs and insulating materials.

The logo is the most intuitive embodiment of the key information of the product. Including technical parameters, manufacturer's basic information, etc. The product lacks the necessary signs, and consumers cannot judge the rated current and load of the product during use, which leads to the wrong use of the product and the risk of endangering personal and property safety. The abnormal heat resistance and flame resistance of insulating materials are the performance of assessing the flame retardant performance of insulating materials used in sockets, whether sparks can ignite insulating materials or whether insulating materials can self-extinguish after being ignited when electrical accessory products fail. Electrical tracking resistance refers to whether conductive substances deposited on the surface of insulating materials by different polarity charged parts of household appliances in actual use cause creepage, breakdown short circuit and fire hazard on the surface of insulating materials.

In the inspection, the main unqualified items of the socket are: marking, electric shock protection, mechanical strength, heat resistance, abnormal heat resistance, flame resistance and electric tracking resistance of insulating materials, dimensional inspection, creepage distance, electrical clearance and distance through sealant.

Sockets for household and similar purposes are standardized products with strong versatility and high compatibility requirements. If the product cannot be used universally or does not meet the relevant general standards, it is easy to cause incomplete insertion of the plug and the socket, and the plug product cannot be successfully inserted into the socket, which is easy to cause electric shock or cannot be powered off in time in case of emergency. The normal installation of plugs and sockets for household and similar purposes should be able to effectively prevent consumers from getting electric shock. Protection against electric shock protection door structure design is unreasonable or the spring elasticity is not enough, sharp metal objects, such as wire, screwdriver, nails, keys, etc. are easy to enter the socket and contact the socket, resulting in electric shock risk.

Mechanical strength is to check whether the product can withstand the mechanical stress generated during installation and use. Can withstand pendulum impact test, drop test, non-detachable test of cover and cover plate, so that the protection door can withstand normal external force without being damaged; When the socket generates heat under load or the surrounding environment has heat source, can the insulating material continue to maintain the normal shape, can the normal insulation between different polarities be guaranteed and the live parts are not exposed. The failure of this project means that if the product is overheated due to large current of live parts or high ambient temperature during use, the deformation is serious, and the live parts leak out, which is very easy to bring the risk of electric shock.

Creepage distance, electrical clearance and distance through sealant, mainly to check whether the structural design between the live parts of the household plug and socket is reasonable, whether there is a sufficient safe distance between the live parts of different polarity and voltage difference, to ensure that the product is in use No short circuit accident occurs. If the project is not qualified, it will cause the internal short circuit or grounding circuit failure of the product, resulting in electric shock and other risks.