Guide to Forms of Segregation & IP Ratings
The principal reason for separating an assembly is to facilitate access to a part of the assembly while other parts may remain energised and in service.
Separation provides:
- Protection against contact with live parts belonging to the adjacent functional units
- Protection against the passage of solid foreign bodies from one unit of an assembly to an adjacent unit
- Limit the probability of initiating an arc fault
Forms of segregation reference
IP Rating Examples
IP Rating Reference Chart
IP | Example | Solid Protection | IP | Example | Liquid Protection |
---|---|---|---|---|---|
Protected against a solid object greater than 50mm, such as a hand. | Protected against vertically falling drops of water. Limited ingress permitted. | ||||
Protected against a solid object greater than 12.5mm, such as a finger. | Protected against vertically falling drops of water w/ enclosure tilted 15° from vertical. Limited ingress permitted. | ||||
Protected against a solid object greater than 2.5mm, such as a screwdriver. | Protected against sprays to 60° from vertical. Limited ingress permitted. | ||||
Protected against a solid object greater than 1.0mm, such as a wire. | Protected against water splashed from all directions. Limited ingress permitted. | ||||
Dust Protected. Limited ingress of dust permitted. | Protected against jets of water. Limited ingress permitted. | ||||
Dust Tight. Zero ingress of dust permitted. | Protected against strong jets of water. Limited ingress permitted. | ||||
Protected against the effects of immersion between 15cm and 1 metre. | |||||
Protected against long periods of immersion under pressure. |