When we buy all kinds of types of explosion-proof motor, the business side will ask what level of protection we need explosion-proof motor. If you do not understand the user, will ask what model, the business will be based on your explosion-proof motor in the environment to recommend a suitable explosion-proof motor to the user; If you know the user, will directly to the business reported their own explosion-proof motor protection level. So it's important to know what the level of protection is.

　　What is the protection level of the explosion-proof motor? Listen to me slowly.

　　Protection level of the logo is composed of letters "IP" and two Numbers, the first number represents the dust level, the second number represents the waterproof level. In our country the maximum dust level is six, the maximum waterproof level is eight. What are the levels of dustproof and waterproof?

　　Dust level:

　　0 -- unprotected motor; (no special protection)

　　1 -- protection of motors with a diameter greater than 50mm; (to prevent large areas of the human body (hands) accidentally or accidentally touched. Proximity to live or rotating parts in the shell (but not intended to prevent contact)

　　2 -- motor with a diameter larger than 12mm; Prevent fingers or similar objects of no more than 80mm in length from touching or approaching live or rotating parts in the shell.

　　3 -- motor with a diameter larger than 2.5mm; (to prevent tools or wires larger than 2.5mm in diameter from touching or approaching live or rotating parts in the shell)

　　4 -- motor with a diameter larger than 1mm; (it can prevent wires or strips with diameter or thickness greater than 1mm from touching or approaching live or rotating parts in the shell.) 5 -- dustproof motor (general dust). (it can prevent touching or approaching the live or rotating parts in the shell). Although it cannot completely prevent dust from entering, it is not enough to affect the normal operation of the motor

　　6 -- dust tight motor (completely prevent dust from entering)

　　Waterproof grade:

　　0 -- unprotected motor;

　　1 -- drip-proof motor (vertical dripping has no harmful effect);

　　2-15 ° drip-proof motors (when the electricity to tilt in any direction from the normal position to any Angle within 15 °, vertical drop of water should be no harmful effects);

　　3 - water spray motor (with vertical lines into 60 ° Angle within the scope of the spray water shall be no harmful effects);

　　4 -- anti-splash motor (no harmful effect shall be caused by splashing in any direction);

　　5 -- water-proof motor (no harmful influence shall be caused by water spraying in any direction);

　　6 -- anti-wave motor (under the impact of strong waves or strong water spraying, the water intake of the motor should not reach the harmful level);

　　7 -- anti-flooding motor (when the motor is immersed in the water under the specified pressure for a specified time, the motor's water intake shall not reach the harmful degree);

　　8 -- submersible motor (able to dive for a long time under specified conditions).

　　After reading these, I believe you all know that when you buy motors in shops or manufacturers, you will see the column of protection level on the nameplate of explosion-proof motors. There is a data composed of letters and Numbers, such as IP54 or IP55. What does IP54 or IP55 stand for?