1. A symbol of protection levels is by the characterization of the letters "IP" and additional representation in the latter two numbers
Which the "IP" is the English international protection (International Protection) of the acronym.
The first digital | Specific meaning | Brief |
| 0 | No special protection | No protective motor |
| 1 | To prevent accidental or accidental human touch on or near the shell of charged or rotating parts, diameter greater than 50mm to prevent the entry of foreign matter into the solid motor | Solid protection of the motor is greater than 50mm |
| 2 | To prevent the fingers or length 80mm super hit or a similar object closer to the shell of charged or rotating parts, diameter greater than 12mm to prevent the entry of foreign matter into the solid motor | Solid protection of the motor is greater than 12mm |
| 3 | Greater than 2.5mm in diameter to prevent the tools or wires touching or near the shell of charged or rotating parts, to prevent greater than 2.5mm diameter solid motor | Solid protection of the motor is greater than 2.5mm |
| 4 | To prevent the diameter or thickness greater than 1mm slice of the wire or touching or near the shell of charged or rotating parts is greater than 1mm in diameter to prevent the entry of foreign matter into the solid motor | Solid protection of the motor is greater than 1mm |
| 5 | To prevent the touching or near the shell of charged or rotating parts, although not completely prevent the entry of dust, | Dust-proof motor |
| 6 | Can completely prevent the entry of dust | Dust density electrical |
2. Characterization of the number of second shell water because the harmful effects caused by the protective level, that is, the protection we have said before in the second grade, and its specific meaning is as follows
| Second-digit | Specific meaning | Brief |
| 0 | No special protection | No protective motor |
| 1 | Water without the harmful effects of vertical | Anti-drip motor |
| 2 | With the vertical line into a 15 degree angle should be no harmful effects of water | 15 degrees anti-drip motor |
| 3 | With the vertical line into a 60-degree angle should be no harmful effects | Protection against water |
| 4 | Subject to any direction without the harmful effects of water splashing | Splash water |
| 5 | Subject to any direction of the jetting water should have no harmful effects | Jetting water |
| 6 | Subject to severe shocks or strong water waves, the motor does not reach into the water, the harmful effects should be | Anti-wave motor |
| 7 | Provisions of the electrical pressure of the water immersion, after a specified time after the motor into the water should not reach the level of harmful | Protection flooding water |
| 8 | Long-term diving | Submersible Motor |
