IP (INGRESS PROTECTION)protection grade system is drafted by IEC (INTERNATIONAL ELECTROTECHNICAL COMMISSION), which classifies electrical appliances according to their dust and moisture resistance. The foreign objects referred to here include tools, and human fingers, etc., should not touch the live parts of the appliance to avoid electric shock.
IP protection level representation method:
The protection level is usually expressed by two numbers by IP, and the numbers are used to clarify the protection level.