It’s raining, so new energy vehicles can still be charged.The answer is yes, because the charging gun can be tested for waterproofing. The waterproof test uses new air tightness testing technology, which 100% guarantees that the charging gun reaches the IP67 waterproof test level or a higher IP waterproof test level.

So how to use the air tightness detector for waterproof testing of the charging gun?What IP waterproof level does it achieve?

Generally, charging guns use IP67 waterproof test level, and some use IP68 waterproof test level.

The IP67 waterproof test rating of the charging gun means it completely prevents dust from intruding into the charging gun. Under normal temperature and pressure, it will not cause harmful effects when the charging gun is temporarily immersed in 1M deep water.

How to ensure the waterproof quality of the charging gun?You can use an air tightness tester to perform waterproof testing on the charging gun, and IP67 waterproof testing and identification.The air tightness tester is a waterproof tester that uses compressed air as the testing medium and pressure drop as the testing principle.Its basic parameters are as follows:

Air supply pressure: 0.4~1.2MPa

Power supply voltage: 220v/50hz or 110v/60hz

Pressure adjustment range: -40~-0.5KPa, 5~150KPa

Pressure adjustment accuracy: 0.1KPa

Pressure test range: -80~150KPa

Pressure decay test minimum resolution 1Pa

Minimum resolution of leakage flow test: 0.01ml/min

How to use the air tightness tester to test the waterproofness of the charging gun and the IP67 waterproof test and identification, please see the following introduction from Hai Ruisi:

First, a sealing fixture needs to be made according to the shape of the charging gun.

Then put the charging gun into the sealing tooling, turn on the air tightness tester, and set the test pressure, stabilization time, test time and other parameters, start the air tightness tester to perform a waterproof test on the charging gun, and record the leakage value of the charging gun.Finally, find out the maximum leakage value allowed by the IP67 waterproof test level of the charging gun, and input the leakage value into the air tightness tester. Then you can realize batch detection of the IP67 waterproof test level of the charging gun, and automatically detect whether it has reached the IP67 waterproof test level.In the same way, IP66 and IP68 waterproof test levels are also tested in the same way, but the leakage values ​​set are different.