IP (International Protection) Protection grade system is made up of IEC (International company Technical appointed the draft.Will be in accordance with its lamps and lanterns prevent outside content invasion, waterproof, dustproof, moisture proof the characteristics of classification.Here refers to foreign object contains tools, man's fingers are not in contact with the lamps and lanterns of charged part, in order to avoid electric shock.
IP protection grade is composed of two Numbers, the first number said dust of lamps and lanterns, the level of the external things out;Second number said lamps and lanterns of moisture proof, waterproof airtight degree.The greater the number, the higher their level of protection, said two marked number represented by protection grade, such as table 1 and table 2.
First marked feature number (number) refers to degree of protection
Marking the first number:
No protection 0. The rest of the world there is no special protective IP0 - people or things
1. The invasion is greater than 50 mm solid objects, to prevent the human body (such as palm) due to accidental access to the internal parts of lamps and lanterns.To prevent large size (diameter greater than 50 mm) invading IP1 - external things
2. To prevent solid objects into greater than 12 mm, prevent finger touch lamps and lanterns of the internal parts.To prevent the medium size (greater than 12 mm in diameter, length is greater than 80 mm) of invading IP2 - external things
3. The invasion of solid objects is greater than 2.5 mm, to prevent greater than 2.5 mm diameter or thickness of tools, electrical, or similar small objects into contact with the internal parts of the lamps and lanterns of IP3 -
4. The invasion of solid objects is greater than 1.0 mm, prevent the diameter or thickness greater than 1.0 mm of tools, electrical, or similar small objects into contact with the internal parts of the lamps and lanterns IP4 -
5. Dustproof, completely prevent outside intrusion.Although not completely prevent dust intrusion, but the amount of intrusion of dust will not affect the normal operation of lamps and lanterns IP5 -
6. Dust tight completely prevent outside intrusion, and can completely prevent dust intrusion IP6 -
The second sign feature number (digital) refers to degree of protection
The second sign number:
No protection 0. The rest of the world people or things no special protection of IP - 0
1. To prevent water intrusion, vertical drop of water droplets (e.g., water) for lamps and lanterns is not cause harmful effects, IP - 1
2. Tilt 15 ° when still can prevent water intrusion, when lamps and lanterns by vertical tilt to 15 °, drop of harmful effects on the lamps and lanterns is not IP - 2
3. Avoid spraying water intrusion, rain or on defense and the vertical Angle of less than 60 ° direction by spraying water into the damage of lamps and lanterns of IP - 3
4. Prevent splash of water invasion, prevent the direction of water splash into the damage of lamps and lanterns IP - 4
5. Prevent injection water invasion, prevent from each direction by nozzle spray water into the damage of lamps and lanterns IP - 5
6. To prevent the invasion of the big waves, installed in the lamps and lanterns of the deck, to prevent the damage caused by the descent of the big waves and flooding IP - 6
7. To prevent flooding of water intrusion, lamps and lanterns is immersed in the water a certain amount of time or the water pressure under certain standards to ensure that no damage caused by water IP - 7
8. To prevent sinking water intrusion, lamps and lanterns indefinitely designated water pressure under the condition of the sinking of the early, to ensure that no damage caused by water IP - 8
The second:
IP protection grade system
Enter the Protection IP said Ingress Protection ().
Levels of the tag number such as IP6_ said dustproof protection level (6 said no dust, see table below)
The second tag number such as IP_5 said waterproof protection level (5 said protection of water injection, see table below)
Prevent invasion of solid substances - the first number definition description To prevent fluid invasion - second number definition description
0. Unprotected.No special protection.0 no protection.No special protection.
1. The protective 50 mm diameter and larger solid foreign substance.Protective surface area larger objects such as hand (not deliberately intrusion protection).1 protection water (vertically falling drops)
2. 12 mm in diameter and larger solid foreign substance.Protective fingers or other objects of less than 80 mm length.15 degrees tilt, 2 equipment protection water droplets.Vertical drop of water droplets should not cause damage.
3. The protective 2.5 mm in diameter and larger solid foreign substance.Protection or thickness more than 2.5 mm in diameter tools, metal wire, etc.3 protection spill water.At 60 degree Angle from the vertical line on both sides of the spatter water should not cause damage.
4. Protective 1.0 mm in diameter and larger solid foreign substance.Shielding thickness greater than 1.0 mm wire or strings.4 protective spray.When the equipment normal position 15 degrees, from any direction on the equipment of hydraulic should not cause damage.
5. Protection of dust.Can't completely prevent dust from entering, but the amount of dust will not affect the normal operation of the equipment.5 protective water jet.From any direction on water jet should not cause damage to the equipment.
6. Opaque dust.No dust.6 protection waves.The waves or strong water jet into the amount of water should not cause damage to the equipment.
7. Protection of flooding.Under the pressure and time of the definition of a submerged, should not have to cause damage of water intrusion.
8. Protection under water.Under the condition of manufacturers that equipment can be immersed in water for a long time.
The waterproof test (IP_5) test method and the main test conditions are defined as follows:
Test methods - the spray nozzle mouth diameter of 6.3 mm, in 2.5 3 m distance test samples.
The flow rate of 12.5 l/min plus or minus 5%
The test duration of 1 min/m2 but at least for 3 minutes.
Test conditions - from the Angle of each feasible test sample injection.