How to see the IP54 protection level of the low voltage distribution box

Look at GB1498-79, what is the protection level of motors and low-voltage electrical shells? The IP (International Protection) protection rating system is developed by IEC (International Electro Technical).

"IP54", i.e. dust resistance is class 5: It cannot completely prevent dust intrusion, but the amount of dust invading will not affect the normal operation of the product; Waterproof class 4: Prevent the intrusion of splashed waterPrevent the intrusion of water from all directions.

The waterproof rating is 4: Prevent the intrusion of splashed waterPrevent the intrusion of splashing water from all directions. The application of the protection level in industry is generally as follows:

IP65, the highest level is IP68 But the protection level IP54 is a lower level, IP is the marking letter, the number 5 is the first marking number, 4 is the second marking number, the first marking number indicates the contact protection and foreign object protection level, and the second marking number indicates the waterproof protection level.

The standard of the waterproof rating.

1. Air pressure resistancePut the watch in the air with an air pressure 2 105 pa (2 bar) higher than the normal atmospheric pressure, and measure the air leakage rate entering the case (detected with a special instrument). Air leakage rate 50 mcg min.

2. Water pressure resistance immerse the watch in a container containing water, and apply a pressure value equal to the overpressure mark value within 1 minute, if the pressure value of the watch without the overpressure mark is 2 105Pa (2bar), and keep it for 10 minutes, and then, the pressure should be reduced to the surrounding environment pressure within 1 minute. Do the condensation test, and the inner surface of the surface glass shall not appear condensation.

ip is the marker letter, the number 5 is the first marker number, and 4 is the second marker numberThe first marking number indicates the level of contact protection and protection against foreign objects, and the second marking number indicates the level of protection against water.

ip54Ingress protectionIt refers to a dust resistance level of 5Waterproof ratingis level 4. The protection level of the enclosure of electrical and electronic products is IP54. That is, the dust proof is level 5, which cannot completely prevent dust intrusion, but the amount of dust intrusion will not affect the normal operation of the product; Waterproof class 4: Prevent the intrusion of splashed waterPrevent the intrusion of water from all directions.

The IP (Ingress Protection) protection rating system is drafted by the International Electronic Technical Commission (IEC), which classifies electrical appliances according to their characteristics of dust and moisture resistance.

The IP protection level is composed of two numbers, the first number indicates the level of dust proof and prevention of foreign object intrusion of electrical appliances (the foreign objects referred to here include tools, human fingers, etc., can not touch the live head part of the electrical appliances to avoid electric shock), the second number indicates the degree of sealing of the electrical appliances against moisture and waterproof immersion, and the larger the number, the higher the protection level.