Anti-shock protection is a key safety indicator to ensure that the plug and socket, the converter under normal conditions, and even some accidents, will not cause electric shock to users and others. When the plug and the socket are fully or partially inserted, the live part of the plug shall not be accessible; any plug of the plug shall not be able to be inserted into the live socket of the socket when the other pins are in an accessible state. Plugs and sockets with protective doors and converters should prevent the insertion of monopoles or probes.
structure
The socket assembly of the socket should be flexible enough to ensure adequate contact pressure on the plug pins. The socket should be corrosion-resistant and wear-resistant to ensure good contact between the plug and the socket; the plug of the plug should be locked and cannot be rotated, otherwise, the insertion performance and unsafe factors will be affected; the converter has a cord fixing device to ensure The cord is fixed and can withstand normal tension and torque; when the plug and socket are inserted, the mating surfaces should be basically tight to prevent electric shock.
power cable
The power cord should have a sufficient cross-sectional area to ensure that the power cord will not heat up and cause insulation damage, resulting in short circuits, fire, leakage, and accidents. For example, the common 250V, 10A converter power line cross-sectional area should be greater than or equal to 0.75mm2.
Mechanical strength
Plugs and sockets should have sufficient mechanical strength to withstand the various mechanical stresses caused by drops, impacts, extrusions, etc. during installation and use; sockets with protective doors should prevent unipolar insertion.
Heat and flame resistance
High temperature has a great influence on various properties of insulating materials. Under high-temperature conditions, the structure and characteristics of insulating materials will change substantially. This change determines the reliability of materials. Some materials will gradually soften at high temperatures. The mechanical strength drops, which will affect the quality of the plug socket and the safety in use. In addition, the insulation material of the plug and socket should have certain flame-retardant properties. Otherwise, if the product is in use, it will not be able to clean up.
1. You must choose a regular factory, supermarket, or specialty store, choose brand products; select the corresponding (matched) products according to the power of the electrical appliances used.
2. We must see if the product mark is complete, whether there is a manufacturer's trademark, and whether...
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