summary

According to the Test Specification IEC / en 60529, the dust and water proofing test requirements of the products shall be met. 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 test equipment, methods, time and judgment criteria.

The full name of IEC / en 60529 standard is degrees of protection provided by enclosure (IP code), which means the protection level provided by the product enclosure. IP is the abbreviation of international protection, which means the internationally recognized protection level. At present, more and more countries adopt it. Only in the United States and Canada, the national standards such as ul50 and CSA are still used for dust prevention and waterproof.

Generally speaking, most of the product standards of IEC or En will make some modifications to the conditions of IEC / en 60529, such as test conditions or judgment standards, in order to meet the requirements of their special products. These standards, such as IEC / en 60598 lighting products, IEC / en 60335 household appliances, IEC / en 60558 power supply standards, and even IEC / en 60950 information product standards, often have requirements for dust-proof and waterproof tests.

The products need dustproof and waterproof test. Most of them are used in outdoor or humid environment, such as lamps, advertising materials, air-conditioning products, bathroom supplies, washing machines, swimming pool supplies, sauna supplies, fish tank supplies, power supplies of the above products, and even information products have increasingly emphasized the function of dustproof and waterproof.

Dust proof and waterproof test standard:

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 solid objects from entering (dust prevention).

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

Additional first letter (y): can be h, m, s, W, representing additional protection conditions.

The additional second letter (z): can be a, B, C, D, representing the ability to protect the contact with dangerous parts.

power.

First number

Test significance

Test capability

0

Not required

—

one

50mm diameter sphere

50N

two

12.5mm diameter sphere

30N

three

2.5mm diameter metal rod

3N

four

1.0mm diameter wire

1N

five

Dust chamber, with or without negative pressure

—

six

Dust chamber with negative pressure

—

Second number

Test significance

Water volume or depth

Test time:

0

Not required

—

—

one

Vertical drip test

1mm/min

10min

two

Drip test with inclination of 15 degrees

3mm/min

2.5min for each slope

three

Water spray test (60 degrees)

0.07 L / min (per well)

10min

four

Splash test (180 degrees)

0.07 L / min (per well)

10min

five

Water column test

12.5 L/min

1min/m2，≥3min

six

Strong water column test

100L/min

1min/m2，≥3min

seven

Short immersion test

The top is 15cm from the water surface or the bottom is 1m from the water surface

30min

eight

Continuous immersion test

Individual provisions, but stricter than 7

＞30 min

Judgment after test

Generally, if there is no special provision in the product standard, the requirements for ip5x dust test are:

Talc powder shall not accumulate or enter the product. If any other dust enters, it may endanger the normal operation of the product or product safety.

Talc powder shall not be allowed to enter, which may reduce the creepage distance, which does not meet the safety requirements.

Generally, if there are no special provisions in the product standard, the requirements for ip6x dust test are:

No dust shall enter the enclosure.

Generally, if there is no special provision in the product standard, the requirements for ipx1-ipx6 waterproof test are:

The normal operation of the product shall not be affected.

Do not endanger product safety.

No water shall enter the coil that contacts the live part or is not waterproof.

There shall be no ponding at the cable terminal or entering the cable.