Many customers in the purchase of explosion-proof products will pay attention to the protection level, so what is the protection level, in industrial applications, protection level IP56, IP66, IP67 what is the difference, many customers still have doubts, today to clarify the protection level IP56, IP66, IP67 specific differences.
The IP (INGRESS PROTECTION) rating system is drafted by the INTERNATIONAL ELECTROTECHNICAL COMMISSION (IEC), which classifies electrical appliances according to their characteristics of dust and moisture resistance. IP protection level is composed of two numbers, the first number represents the dustproof of electrical appliances, to prevent the invasion of the level of external objects (here refers to the external objects including tools, human fingers are not allowed to touch the electric part within the electric appliances, so as not to get an electric shock), the second number represents the electrical appliances against moisture, waterproof immersion airtight degree. The higher the number, the higher the protection level.
Therefore, IP56 protection level refers to the dustproof aspect, to prevent the invasion of external objects, although not to prevent dust invasion, but the invasion of dust will not affect the normal operation of electrical appliances; In terms of waterproofing, prevent a large amount of water spraying lasting at least 3 minutes. IP66 protection grade refers to the dustproof aspect, to prevent the invasion of external objects and dust; In terms of waterproofing, prevent a large amount of water spraying lasting at least 3 minutes.
IP67 protection grade refers to the dustproof aspect, prevent external objects and dust invasion; In terms of waterproofing, it can prevent 30 minutes of immersion in water up to 1 meter deep.
Bxpk-1 positive pressure explosion-proof electrical control cabinet produced by Kaiwei is A compound explosion-proof system which combines positive pressure, inherent safety and flameproof technology. It is advanced in structure, simple in operation, safe and reliable, and can be widely used in the dangerous places with ⅱ A ~ ⅱ C, T1 ~ T4 explosive gas mixture in zone 1 and zone 2 in the factory.
Owin explosion-proof tank through the micro positive pressure control system the main chamber pressure in 200 pa, become a safe environment, to provide power supply for instrumentation, automatic control instrument on electricity, the function of power, in order to achieve positive pressure explosion-proof requirements: (1) automatic delay ventilation (2) connect power supply automatically 3) loss of pressure automatically cut off the power supply, etc. Kaiwei positive pressure explosion-proof electrical control cabinet has two combinations of main and secondary cabinets: left and right, up and down. The main cabinet is positive pressure sealing chamber, front (back) door, front observation window, and the secondary cabinet is mainly installed with positive pressure gas path control system. With automatic ventilation before opening, ventilation delay, automatic air replenishment, automatic control of positive pressure range of operation functions. The operation is simple and convenient, and the state of "positive pressure operation" will be entered at the end of ventilation. With positive pressure protection (upper and lower limit), sound and light alarm, positive pressure critical lower limit automatic power off, open the door power off, emergency manual power off and other safety interlock protection functions. All kinds of instruments, frequency converters, PLC, soft starter and computer control system can be installed inside the cabinet to realize local and remote control.
