IP stands for Ingress Protection, and the IP Protection Class system provides a way to classify electrical equipment and packaging by how dust, water, and collision resistant they are. The system was drawn up by the International Electro Technical Commission (IEC) and developed in IED529 (BS EN 60529: 1992) Outer Packaging Protection Level (IP code) was announced, and this standard was also adopted as the U.S. national standard in 2004.
IP protection level is composed of two numbers, the first number indicates the electrical dust, prevent the level of foreign object intrusion (here refers to the foreign objects including tools, human fingers, etc. are not exposed to the electrical electrical live part, so as to avoid electric shock), the second number indicates the degree of electrical moisture, waterproof intrusion, the greater the number indicates the higher the level of protection.
The first digit after the IP is dust proof level
The first number indicates the range of dust resistance of the device, or the degree to which people are protected from hazards in a sealed environment. Represents the level to prevent the entry of solid foreign objects, the highest level is 6:
Level 1, can block objects larger than 50mm, semi-exposed state.
Level 2, to prevent the invasion of solid objects greater than 12mm, to prevent human fingers from contacting the internal parts.
Level 3, to prevent the invasion of solid objects greater than 2.5mm, to prevent the diameter or thickness of more than 2.5mm tools, wires or similar small foreign objects to invade and contact the internal parts.
Level 4, to prevent the invasion of solid objects greater than 1.0mm, to prevent the diameter or thickness of more than 1.0mm tools, wires or similar small foreign objects to invade and contact the internal parts.
Level 5, has a good dust effect, dust will not cause equipment damage or a large amount of accumulation.
Level 6, completely dust-free, the connecting port and other parts are sealed completely.
The second digit after IP: waterproof rating
The second digit indicates how waterproof the device is. Represents the level of water protection, the highest level is 8:
Level 0, no special protection.
Level 1, protect against water droplets. Vertical drops of water, such as condensate, do not cause damage.
Level 2, tilt 15 degrees, can still prevent water drop immersion. When tilted from vertical to 15 degrees, dripping water will not cause damage.
Level 3, to prevent the spray water immersion. Prevent rain or damage caused by water sprayed in the direction with an Angle of less than 60 degrees from the vertical.
Level 4, to prevent splashing water immersion. Prevent splashing water from all directions from invading and causing damage.
Level 5, to prevent the injection of water immersion. Prevent water from all directions from the nozzle to invade and cause damage.
Level 6, protect against large waves. Can prevent damage caused by the invasion of large waves.
Level 7, to prevent water immersion during flooding. Immersion in water for a certain time or water pressure below a certain standard can ensure that no damage is caused by immersion.
Class 8 to prevent water immersion during sinking. Sinking for a long time under the specified water pressure ensures that no damage is caused by flooding.