The poor quality of plug and socket and converter is an important cause of electrical fire. Small plug socket, converter quality problems will cause serious harm to the personal and property safety of the vast number of consumers. Therefore, consumers in the purchase of plugs and sockets, converters, switches, should focus on the safety of the product, and affect the safety of the main performance indicators are as follows:

mark
Sign is an important basis to instruct people to correctly install, use and maintain, and is an extremely important safety standard content to ensure the safety of people and property. The rated current, rated voltage and nature of the power supply shall be marked in the obvious position of the plug and socket products. In addition, the converter (the converter refers to the mobile electrical accessories with only one plug part and one or more socket parts combined together) products should use the "MAX (or large)" symbol to mark the rated current/or power, in order to guide users to avoid overload use. Signs or symbols should be durable and legible. Screen prints and paper stickers that can be easily erased should not be used.

rating

The rating is the basic electrical exchange parameters to ensure the normal, safe and cooperative use of plugs and sockets, converters and connected electrical appliances. The rated current of the converter shall not be greater than the rating of the plug part. Otherwise, it may cause danger when the user chooses electrical appliances according to the rated current of the socket, the plug overcurrent heats; The minor rating of converters with fuses and overload protectors shall be equal to the rating marked on the fuses and overload protectors. Otherwise, product damage may occur.

dimension

Size is an important technical requirement related to the safe use of plug sockets and converters and whether they meet the general interchangeability requirements to avoid misinsertion. The unqualified size will affect the use of the user or cause hidden dangers such as poor contact and incorrect insertion, which may damage the equipment or cause fire and electric shock.

Protection against electric shock

Anti-shock protection is a key safety index to ensure that plugs and sockets, converters will not cause electric shock accidents to users and others under normal use, even some accidents. When the plug is fully or partially plugged into the socket, the live part of the plug should be out of reach; Any pin of the plug shall not be inserted into the live socket socket while the other pins are in the reachable state. Plug sockets and converters with protective doors shall prevent unipolar or probe insertion.

structure

The socket sleeve assembly shall be flexible enough to ensure sufficient contact pressure on the plug pin. The socket should be corrosion-resistant and wear-resistant to ensure good contact between the plug and the socket. The pin of the plug should be locked and not rotated, otherwise it will affect the performance of the plug and produce unsafe factors; The converter has a flexible wire fixing device to ensure that the flexible wire is fixed and can withstand the normal tension and torque, etc. Plug and socket plug, plug between the surface should be basically tight, to prevent electric shock accidents.

Power cord

The power line should have sufficient cross-sectional area to ensure that the power line will not heat up and cause insulation damage, resulting in short circuit, fire, leakage, resulting in accidents. For example, the power cable cross-sectional area of a common 250V, 10A converter must be greater than or equal to 0.75mm2.

Mechanical strength

The plug socket should have enough mechanical strength to withstand the installation and use of the process of falling, impact, extrusion brought by a variety of mechanical stress; Sockets with protective doors should prevent unipolar insertion.

Heat and fire resistance

High temperature has a great impact on the performance of insulating materials, insulating materials in high temperature conditions, its structure and characteristics will change in nature, this change determines the reliability of the use of materials, some materials at high temperature will gradually become soft, mechanical strength decline, which will affect the quality of plugs and sockets and use of safety. In addition, the insulation materials of plugs and sockets should have certain flame retardant properties. Otherwise, the product in use in case of fire will be out of control. Understand the safety performance of plugs and sockets, when buying and using, grasp the following points to ensure the safety of your family and property:

1, must choose regular factories, supermarkets or stores, choose brand products; Select products according to the power of electrical appliances, such as: Air conditioner, high-power shower and other products should be selected 16A plug and socket, other low-power household appliances can be selected 10A plug and socket, such as the purchase of 16A plug power cord, need to see whether the wire square specification reaches 1.5 square and above, if the wire is less than 1.5 square, when using high-power electrical products prone to wire copper wire temperature rise, PVC outer skin softens, leading to electrical burning or short circuit problems.

2, we must see clearly whether the product marks are complete, whether there is the manufacturer's trademark, whether there is a local national safety certification mark (for example, in the Chinese market, there must be CCC mark), if there is no mark on the plug wire product, the plug product must be fake, the quality of the product will not be guaranteed.

3. Check the qualification certificate of plug products and the inspection report issued by the legal department. If the converter product is not included in the compulsory certification, it should check the inspection report issued by the statutory inspection agency when purchasing, or check whether the file number on the plug is valid.

4, simple plugging experiment on the plug products, plug into the socket should be good contact, no loose feeling, and not too hard to pull out, because some products although after factory testing, but after delivery, it will inevitably damage the plug insert, test before purchase, to reduce a lot of unnecessary losses in the future.

5, do not buy the plug can rotate or artificially change the shape of the plug, the change in shape of the plug must pass CCC certification, otherwise it is unsafe plug products, easy to be broken down by high voltage, also do not use two large power electrical appliances in a socket at the same time; If the temperature of the plug socket or power cord is too high or there is a spark, stop using it and replace it.