According to the test requirements for dust and water resistance of the product, according to the test specification IEC/EN 60529. As long as the product needs to prevent solid objects such as arms, fingers, metal rods, metal wires, even dust or liquid (water) from entering the product, there is a set of standard testing equipment, methods, time and compliance The standard of judgment.

The full name of the IEC/EN 60529 standard is Degrees of protection provided by enclosure (IP code), which means the degree of protection provided by the product enclosure. IP is the abbreviation of International Protecion, which means the internationally recognized protection level, and more and more countries are currently adopted. Only in the United States and Canada, dust and water resistance still follow their national standards such as UL50 and CSA.

Generally speaking, most of the IEC or EN product standards (product standards), when setting their requirements for dust and water resistance, will often make some modifications to the conditions of IEC/EN 60529, such as test conditions or judgment standards. , To meet the needs of its special products. These standards, such as IEC/EN 60598 lighting products, IEC/EN 60335 home appliances, IEC/EN 61558 power supply standards, and even IEC/EN 62368-1 information product standards, often require dust and water resistance testing.

Products need to be tested for dust and water resistance. Most of them are used in outdoor or humid environments, such as lamps, advertising materials, air-conditioning products, bathroom supplies, washing machines, swimming pool supplies, sauna supplies, fish tank supplies, and power supplies for the above products Devices, and even information products, are increasingly emphasizing the functions of dust and water resistance.

The meaning of IP Code IP N1 N2 Y Z

The first number (N1): It can be 0, 1, 2, 3, 4, 5, 6 or X, representing the ability to prevent solids from entering (dustproof).

The second number (N2): It can be 0, 1, 2, 3, 4, 5, 6, 7, 8 or X, which represents the ability to prevent liquid from entering (waterproof).

Additional first letter (Y): can be H, M, S, W, representing additional protection conditions.

Additional second letter (Z): can be A, B, C, D, representing the ability to protect against contact with hazardous parts.

Judgment after the test

Generally, if there is no special regulation in the product standard, the requirements of IP5X dust test are:

■Talcum powder must not accumulate or enter the product. When it is replaced by any other dust, it may endanger the normal operation of the product or product safety.

■No talcum powder may enter, which may reduce the creepage distance (creepage distance), which does not meet the safety requirements.

Generally, if there is no special requirement in the product standard, the requirements of IP6X dust test are:

■Do not allow any dust to enter the housing.

Generally, if there is no special regulation in the product standard, the requirements of IPX1-IPX6 waterproof test are:

■Should not affect the normal operation of the product.

■Do not endanger the safety of the product.

■Do not allow water to come into contact with live parts or coils that are not waterproof.

■Do not allow water to accumulate at the cable terminal or enter the cable.