Ingress Protection (IP) Code Designations
Ingress Protection (IP) Code Designations
Guardian Telecom’s DTT-Z and DTR-Z Zone 1 Hazardous Area telephone models and the WTE-100 enclosure meet the requirements and standards of IP66.
Developed by the European Committee for Electro-Technical Standardization (CENELEC) Ingress Protection (IP) ratings Specify the environmental protection that an enclosure provides.
An IP rating normally has two numbers.
Protection from solid objects or materials
Protection from liquids (water)
The first number or digit designates protection from solid objects, while the second number or digit designates protection from moisture.
The levels for the first digit (protection against solid or foreign objects) vary from 1 through 6.
The levels for the second digit (protection from moisture) vary from 1 through 9.
A larger number means increased protection.
Table 5. IP Code Designations
| 1st Digit |
Protection Against Foreign Objects |
2nd Digit |
Protection Against Liquids |
| 0 | Not Protected | 0 | Not Protected |
| 1 | Protected against solid objects up to 50 mm | 1 | Protected against vertically falling drops of water; e.g. condensation |
| 2 | Protected against solid objects up to 12 mm | 2 | Protected against direct sprays of water when tilted up to 15N from vertical |
| 3 | Protected against solid objects over 2.5mm | 3 | Protected against direct sprays of water when tilted up to 60N from vertical |
| 4 | Protected against solid objects up to 1 mm | 4 | Protected against splashing water from all directions – limited ingress permitted |
| 5 | Dust protected | 5 | Protected against low projections of water from all directions – limited ingress permitted |
| 6 | Dust tight | 6 | Protected against strong water jets from all directions; e.g. heavy seas |
| 7 | Protected against the effects of temporary immersion between 15 cm and 1 m | ||
| 8 | Protected against the effects of continuous immersion under pressure | ||
| 9 | Protected against high pressure, high temperature jets of water from multiple directions |
The content in this section presents general information describing the classification systems that Guardian Telecom designs, manufactures and markets telephone and paging system products to, including ATEX, NEC, CEC and IEC.
All information is for general reference purposes only. All applicable local and national regulations and practices concerning Explosion Proof and Hazardous Area communications equipment must be strictly followed and adhered to.
For detailed information refer to published documents on hazardous location definitions and installation requirements presented by: 1) NEC®, 2) CEC Canadian Electrical Code, 3) IEC
