Fans introduce IP waterproof rating

　　IP (International Protection) protection rating system is being drafted by the IEC (International Electro Technical Commission). The lamp according to dust, to prevent intrusion of foreign material, waterproof, anti-moisture characteristics to grade. Foreign objects referred to here include tools, etc. can not be a human finger touching live parts within the lamp to avoid electric shock. IP protection class is composed by two numbers, the first number represents the light dust, to prevent the intrusion of foreign material level; the second number represents the lamp against moisture, water tightness of the invasion. The higher the number, the higher the level of protection, said its two figures indicate the degree of protection as indicated in Table 1 and Table 2. Degree of protection marked the first feature number (numeric) marked the first digit refers to: 0. no protection against the outside world or things of no special protection IP0- 1. solid objects greater than 50mm prevent intrusion and prevent the body (such as palm) accidentally touch the inside of the lamp parts. Prevent larger size (diameter greater than 50mm) intrusion of foreign objects IP1- 2. prevent intrusion of solid objects greater than 12mm of preventing human finger to touch the internal parts of the fixture. Prevent the medium size (diameter greater than 12mm, length greater than 80mm) intrusion of foreign objects IP2- 3. 2.5mm to prevent the intrusion of solid objects greater than prevent diameter or thickness greater than 2.5mm of tools, wires or similar small intrusion of foreign objects and contact the internal parts of lamps IP3- 4. prevent intrusion of solid objects greater than 1.0mm, prevents the tool diameter or thickness greater than 1.0mm, the wire or similar small intrusion of foreign objects come into contact with the internal parts of the lamp IP4- 5. dust completely prevent foreign matter. Although we can not completely prevent intrusion of dust, but the amount of intrusion of dust and does not affect the normal operation of the lamp IP5- 6. dust density completely prevent intrusion of foreign material, and can completely prevent dust from intruding IP6- second marked feature number (number) degree of protection within the meaning of the second digit mark: 0. unprotected persons or things on the outside without special protection of IP-0 1. prevent dripping intrusion, vertical drops of water droplets (such as condensation water) will not cause harmful effects on the lamp when the IP-1 2. 15 ° tilt can still prevent dripping invasion, when the lamp is tilted from vertical to 15 °, dripping on the lamp will not cause harmful effects IP-2 3. prevent spraying water intrusion, or anti-on with the rain water vertical angle is less than 60 ° of the direction of the spray into the fixture damage IP-3 4. prevent splashing of water intrusion and prevent water from splashing all directions into the fixture damage IP-4 5. prevent spray water intrusion to prevent water from all directions sprayed from the nozzle into the fixture damage IP-5 6. prevent the intrusion of big waves, installed in the lamp on the deck, and prevent the invasion of the waves and flooding damage IP-6 7. prevent flooding when water intrusion, lamps immersed in water pressure at a certain time or a certain standard to ensure that the following are not caused by water damage to the IP-7 8. prevent water intrusion when sinking, sank early fixtures indefinitely designated water pressure under the situation, to ensure that no damage caused by water IP-8 second: IP protection class IP system, said Ingress Protection (ingress protection). Rank first numerals denote like IP6_ dust protection rating (6 means no dust from entering, see table below), said second numerals as IP_5 waterproof protection rating (5 indicates that the protection of water injection, see table below) to prevent the intrusion of solid material - The first digital definition describes prevent liquid intrusion - 0. The second number is defined description unprotected. No special protection. 0 No protection. No special protection. 1. 50mm diameter and greater protection of solid foreign objects. Protective surface area of large objects such as hands (not deliberate intrusion protection). A protective water droplets (vertically falling drops) 2. 12mm diameter and greater protection of solid foreign objects. Protective fingers or other objects no longer than 80mm. When two devices tilted 15 degrees, protection of water droplets. Vertical drop of water droplets should not cause damage. 3. Protection 2.5mm diameter and larger solid foreign objects. Protective diameter or thickness exceeds 2.5mm tool, wire and the like. 3 Protection spilled water. 60-degree angle from the vertical line on both sides of splashing water should not cause damage. 4. waterproof protective 1.0mm diameter fan and larger solid foreign objects. Protective wire thickness greater than 1.0mm or strips. 4 protective spray. When the device is tilted 15 degrees normal position, the alignment device from any direction shall not cause water damage. 5. Protective dust. Impossible to completely prevent dust from entering, but will not affect the amount of dust into the normal operation of the equipment. 5 protective water jet. Alignment equipment shot water from any direction should not cause damage. 6. impervious to dust. No dust. 6 guard waves. Big waves or strong water jet of water into the device should not cause damage. 7. Protection of flooding. When under pressure and time defined immersed in water, there should be no intrusion of water can cause damage. 8. Protection flooded. Under the conditions of the equipment manufacturer's instructions can be immersed in water for a long time. Waterproof test (IP_5) test method and the main test conditions are defined as follows: Test methods - spout diameter of the nozzle is 6.3mm, the test sample is placed at a distance of 2.5-3m place. Flow rate - 12.5 l / min ± 5% test duration - 1 min / m2 but for at least three minutes. Test conditions - from every possible angle of the test sample injection. Cooling fan