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Introduction to the classification of IP waterproof grade standards

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Update time : 2020-10-10 16:23:39
                                                                        Introduction to the classification of IP waterproof grade standards


IP (INGRESS PROTECTION) protection grade system is drafted by IEC (INTERNATIONAL ELECTROTECHNICAL COMMISSION), which classifies electrical appliances according to their dust and moisture resistance. The IP protection level is composed of two numbers. The first number indicates the level of protection against dust and intrusion of foreign objects (the foreign objects referred to here include tools, human fingers, etc., must not touch the live parts of the appliance. To avoid electric shock), the second number indicates the degree of airtightness of the electrical appliance against moisture and water immersion. The larger the number, the higher the degree of protection.


                                                                                               

INGRESS PROTECTION
Beginning IEC
Group into two numbers
The first number is the level of dust-proof electrical appliances and the intrusion of foreign objects
The second number The degree of airtightness of electrical appliances against moisture and water intrusion
In particular, the larger the number, the higher the protection level

display method
The protection level is usually expressed by two numbers followed by IP, and the numbers are used to clarify the protection level.
The first digit indicates the scope of the device's resistance to dust, or the degree to which people are protected from hazards in a sealed environment. Represents the level of preventing solid foreign objects from entering, the highest level is 6;
The second digit indicates how waterproof the device is. Represents the level of preventing water ingress, the highest level is 8.
The first digit dustproof level after IP
digital
 
Number  Protection Details
0 No protection No special protection for people or things outside
1  Prevent the intrusion of solid foreign objects with a diameter greater than 50mm. Prevent the human body (such as the palm) from accidentally contacting the internal parts of the appliance by means of foreign objects with a larger size (diameter greater than 50mm).
2 Prevent the intrusion of solid foreign objects with a diameter greater than 12.5mm Prevent people's fingers from touching the internal parts of the appliance, and prevent foreign objects of medium size (diameter greater than 12.5mm) from intruding
3 Prevent the intrusion of solid foreign objects with a diameter greater than 2.5mm Prevent tools, wires and similar small foreign objects with a diameter or thickness greater than 2.5mm from intruding and contacting the internal parts of the appliance
4 Prevent the intrusion of solid foreign objects with a diameter greater than 1.0mm Prevent tools, wires and similar small foreign objects with a diameter or thickness greater than 1.0mm from intruding and contacting the internal parts of the appliance
5 Prevent foreign objects and dust completely prevent the intrusion of foreign objects. Although the intrusion of dust cannot be completely prevented, the amount of dust intrusion will not affect the normal operation of the electrical appliance
6 Prevent foreign objects and dust completely prevent foreign objects and dust from intruding  


The second digit after IP: Waterproof rating
Number Protection Range Description
0 No protection special protection against water or moisture
1 Water-proof water drop intrusion Vertically falling water droplets (such as condensed water) will not cause damage to the appliance)
2 When tilted 15 degrees,it can still prevent the intrusion of water droplets When the appliance is tilted to 15 degrees vertically, dripping will not cause damage to the appliance
3 Prevent the intrusion of sprayed water. Prevent rain or prevent the water sprayed in the direction with an angle of less than 60 degrees from the vertical from entering the appliance and causing damage
4 Prevent the intrusion of splashing water Prevent water splashing from all directions from entering the appliance and causing damage
5 Prevent the intrusion of sprayed water Prevent low-pressure water spray that lasts at least 3 minutes
6 Prevent the intrusion of big waves Prevent a large amount of water spray that lasts at least 3 minutes
7 Prevent water intrusion during flooding Protect from immersion for 30 minutes in water up to 1 meter deep
8 Prevent water intrusion when sinking Prevent continuous immersion in water deeper than 1 meter. The exact conditions are specified by the manufacturer for each device.

Prevent danger
Back of A
B finger
C tools
D metal wire


Special information
H high voltage equipment
M The sample runs during the waterproof test
S The sample is still while doing the waterproof test
Climate conditions
IP test

Range: The waterproof test includes the second characteristic number from 1 to 8, that is, the protection level code is IPX1 to IPX8.
Grade waterproof
⑴IPX 1
Method name: vertical drip test
Test equipment: drip test device
Sample placement: Place the sample on the 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: the dripping volume is 1.0±0.5mm/min
Duration: 10 min
⑵IPX 2
Method name: 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 greater than 200mm. After testing one side each time, switch to another side four times in total.
Test conditions: the dripping volume is 3.0±0.5 mm/min
Duration: 4×2.5 min (10 min in total)
⑶IPX 3
Method name: Water spray test
experiment method:
a. Swing tube spray test
Test equipment: swing-tube water spray 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, place the sample on the sample table so that the distance from the top to 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 water spray holes of the pendulum tube, each hole is 0.07 L/min. When water is sprayed, the water from the spray holes in the 60° arc 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 be between 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 according to the surface area of ​​the tested sample shell, 1 min per square meter (excluding installation area), at least 5 min
⑷IPX 4
Method name: water splash test
experiment method:
a. Swing tube 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 above IPX 3 paragraph a; the spray area is the water spray from the 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, a total of about 360°. Each swing (2×360°) about 12s
Test time: Same as the above IPX 3 paragraph a (ie 10 min).
b. Sprinkler type splash 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: 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 nozzle of the nozzle is 6.3mm
Test conditions: Make the distance between the test sample and the water nozzle 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 nozzle of the nozzle is 12.5 mm
Test conditions: make the distance between the test sample and the water nozzle 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 (excluding 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: To be determined by both the supply and demand (seller) parties, the severity should be higher than IPX 7.
Note: In addition, many outdoor electronic products also emphasize floating ability.
Text
The standards based on IP (INGRESS PROTECTION) protection class and waterproof test are:
1) The international protection and waterproof test standard drafted by IEC (INTERNATIONAL ELECTROTECHNICAL COMMISSION): International Electrotechnical Commission standard IEC 529-598
2) National standard GB 700-86
3) GB/T 4208-2017 enclosure protection class (IP code), etc.
IP protection level laboratory: The laboratories that can carry out IP level testing mainly include a testing laboratory, environmental reliability and electromagnetic compatibility test center, aerospace environmental reliability test and testing center, Suzhou Institute of Electrical Engineering, National Electrical Product Quality Supervision and Inspection Center, etc.

IP stands for Ingress Protection (protection level). IEC IP protection level is an important criterion for the safety protection of electrical equipment. The IP protection level system provides a standard for the dust, water and collision resistance of electrical equipment and packaging. Method of classification, this

The system has been recognized by most European countries, drafted by the International Electrotechnical Commission (IEC), and announced in the IED529 (BS EN 60529: 1992) outer packaging protection level (IP code).
The protection level is usually expressed by two numbers followed by IP, and the numbers are used to clarify the protection level.
The first number indicates the scope of the equipment's resistance to dust, or the degree to which people are protected from hazards in a sealed environment. I represents the level of preventing solid foreign objects from entering, the highest level is 6;
The second number indicates how waterproof the device is. P represents the level of preventing water ingress, and the highest level is 8.
Such as the protection level of the motor IP65, protection level IP55 and so on.
The level of protection against contact with electrical equipment and foreign objects (the first number) The level of protection against water for electrical equipment (the second number)
The first number Dust protection range The second number Water protection range
0 No protection-0 No protection-
1 Protects 50mm diameter and larger solid foreign body detectors, the sphere diameter is 50mm, and should not enter completely 1 Water drop protection Water droplets falling vertically should not cause damage
2 Protect 12.5mm diameter and larger solid foreign body detectors, the sphere diameter is 12.5mm, and should not completely enter. 2 When the cabinet is tilted 15 degrees, the protective water droplet will fall vertically when the cabinet is tilted 15 degrees to any side Water droplets should not cause damage
3 Protection against solid foreign body detectors with a diameter of 2.5mm and larger. The sphere has a diameter of 2.5mm and should not enter completely. 3 Protection against splashing water. Water splashing from both sides of the vertical line at a 60 degree angle should not cause damage
4 Protection against solid foreign body detectors with a diameter of 1.0mm and larger. The sphere diameter is 1.0mm and should not be completely penetrated. 4 Protection against water spray. Water spray directed at the cabinet from every direction shall not cause damage
5 Protection against dust It is impossible to completely prevent the entry of dust, but the amount of dust entering will not cause damage to the equipment. 5 Protection against water jets Water jets directed at the cabinet from every direction should not cause damage
6 Dust enclosure: No dust should enter the cabinet at a low pressure of 20 mbar. 6 Protection against strong water jets Strong water jets directed at the cabinet from every direction should not cause damage
7 Protection against short-term water immersion. When the cabinet is immersed in water for a short time under standard pressure, there should be no water that can cause damage.
8 Protection against long-term water immersion. It can be immersed in water under certain conditions and should not cause damage.
Note: The diameter of the detector should not pass through the hole in the cabinet
Know the waterproof grade JIS (IPX) of electronic products
0 No protection
1 Anti-dripping type I, water droplets falling vertically have no harmful effects
2 Water droplets falling within 15 "of the vertical direction have no harmful effects
3 Rainproof type No harmful effects of rain within a range of 60 degrees from the vertical
4 Splash-proof type, no harmful effects from water splashing in any direction
5 Anti-spray type Directly exposed to water spray in any direction without harmful effects
6 Water resistant type Directly sprayed by water in any direction will not enter the interior
7 Anti-immersion type It will not enter the interior even if it is immersed in water under specified conditions
8 In water type, it can be used even if it is immersed in water under certain pressure for a long time
9 Moisture-proof type Can still be used when the relative humidity is more than 90% humidity
The IP waterproof rating of the International Industrial Standard is close to the JIS waterproof rating of the Japanese Industrial Standard, which is divided into 9 grades from 0 to 8. The IP grade also provides for dust resistance. IPxx dustproof and waterproof rating
Dustproof level (the first X indicates)
0: no protection
1: Prevent the intrusion of large solids
2: Prevent the intrusion of medium-sized solids
3: Prevent small solids from entering and intruding
4: Prevent solid objects larger than 1mm from entering
5: Prevent the accumulation of harmful dust
6: completely prevent dust from entering
Waterproof level (the second X indicates)
0: no protection
1: Water droplets will not affect the shell
2: When the shell is tilted to 15 degrees, the water droplets into the shell have no effect
3: Water or rain has no effect from the 60 degree corner to the shell
4: The liquid is splashed into the shell from any direction without harm
5: Rinse with water without any harm
6: Can be used in the cabin environment
7: Can be resistant to immersion in a short time (1m)
8: Long time immersion in water under certain pressure
Example: There is a scale or display instrument marked as IP65, which means that the product can completely prevent dust from entering and can be washed with water without any harm.
Provisions on waterproof test in IPXX grade.
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