Testing

Project introduction:

The waterproof test is applicable to electrical and electronic products that may suffer from flushing during transportation, storage or use. The water comes from heavy rainstorms, wind and rain, sprinkler systems, wheel splashing, flushing, or violent waves. Relevant specifications should specify whether electrical and electronic products must work normally during the test period or whether they can only resist flushing conditions and remain intact.

There are waterproof test requirements for portable, outdoor and automotive electronics. Internationally, no matter whether it is IEC, MIL or ETSI, and SAE, there are corresponding test requirements.

Waterproof level:

⑴IPX 1

Method name: vertical drip test

Test equipment: drip test device

Sample placement: place the sample on a rotating sample table at 1r/min according to the normal working position of the sample, and the distance from the top of the sample to the drip opening is not more than 200mm.

Test conditions: dripping volume is 10.05 mm/min

Duration: 10 min

⑵IPX 2

Method name: Inclined 15° drip test

Test equipment: drip test device

Sample placement: make one surface of the sample form a 15° angle with the vertical, and the distance from the top of the sample to the drip opening is not more than 200mm. After each test, change to another side for four times.

Test conditions: dripping volume is 30.5 mm/min

Duration: 4×2.5 min (10 min in total)

⑶IPX 3

Method name: Water spray test

Test method:

A) Swing tube water spray test

Test equipment: swing tube type spray water splash test device

Sample placement: choose a swing tube with an appropriate radius, make the height of the sample table at the position of the diameter of the swing tube, and place the sample on the sample table so that the distance between the top of the sample and the sample nozzle is not more than 200mm, and the sample table does not rotate.

Test conditions: The water flow rate is calculated according to the number of spray holes of the pendulum tube, each hole is 0.07 L/min. When water is sprayed, the water spray from the spray holes in the 60° arcs on both sides of the pendulum tube is sprayed to the sample. The test sample is placed in the center of the semicircle of the pendulum tube. The pendulum tube swings 60° on both sides of the vertical, a total of 120°. Each swing (2×120°) about 4s

Test time: continuous spraying water for 10 min

B) Nozzle water spray test

Test equipment: hand-held water spray test device

Sample placement: make the parallel distance between the top of the test and the nozzle of the hand-held sprinkler during 300mm and 500mm.

Test conditions: A baffle with a counterweight should be installed during the test, and the water flow rate is 10 L/min

Test time: calculated based on the surface area of the tested sample shell, 1 min per square meter (not including the installation area), at least 5 min

⑷IPX 4

Method name: Water splash test

Test method:

A) Swing tube water splash test

Test equipment and sample placement: the same as the above IPX 3 item A;

Test conditions: Except for the following conditions, it is the same as the IPX 3 item A; the water spray area is the water spray from the water spray holes in the 90° arcs on both sides of the pendulum pipe to the sample. The test sample is placed in the center of the semicircle of the pendulum tube. The pendulum tube swings 180° on both sides of the vertical line, a total of about 360°. Each swing (2×360°) about 12s

Test time: the same as the above IPX 3 item A (i.e. 10 min).

B) Sprinkler type splash water test.
Test equipment and sample placement: the same as the above IPX 3 item B;

Test conditions: remove the baffle with counterweight installed on the equipment, and the rest are the same as the above IPX 3 item B;

Test time: the same as the above IPX 3 item B, that is, calculated based on the surface area of the tested sample shell, 1 min per square meter (not including the installation area), at least 5 min

⑸IPX 5

Method name: water spray test

Test equipment: The inner diameter of the spout of a nozzle is 6.3mm

Test conditions: make the distance between the test sample and the spray nozzle be 2.5m ~ 3m, and the water flow rate is 12.5 L/min (750 L/h)

Test time: calculated according to the surface area of the tested sample shell, 1 min per square meter (not including the installation area), at least 3 min

⑹IPX 6

Method name: strong water spray test;

Test equipment: the inner diameter of the spout of a nozzle is 12.5 mm

Test conditions: make the distance between the test sample and the spray nozzle be 2.5m ~ 3m, and the water flow rate is 100 L/min (6000 L/h)

Test time: calculated according to the surface area of the tested sample shell, 1 min per square meter (not including the installation area) , at least 3 min

⑺IPX 7

Method name: Short-term immersion test

Test equipment and test conditions: immersion tank. The size should be such that the distance from the bottom of the sample to the water surface is at least 1m after the sample is placed in the immersion tank. The distance from the top of the sample to the water surface is at least 0.15m

Test time: 30 min

⑻IPX 8

Method name: continuous diving test;

Test equipment, test conditions and test time: determined by both the supplier and the demander (the buyer and the seller), the severity should be higher than that of IPX 7.

Method standard: GB/T 4208, IEC 60529, etc.

Test equipment and instruments: