IP Degrees of Protection |
IP (International Protection) is a term defined by DIN VDE 0470 and DIN 40
050. These standards describe the classification of degrees of protection
provided by housing for electrical equipment with rated voltages not
exceeding 72.5 kV. They specify the following:
- Protection of persons.
- Protection of electrical equipment against the penetration of solid
matter, including dust.
- Protection of electrical equipment against the harmful effects of
water.
|
 Explanation
of IP Codes
An IP code consists of the letters "IP" and two
digits. The first digit is 0...6 and the second 0...9 or 9k.
Note: The usual degrees of protection specified
for food-industry components are IP 65 (protected against dust and
jets of water) and IP 67 (dust-proof and unaffected by temporary
immersion in water). The choice of IP 65 or IP 67 depends on the
application in question and the various test criteria which apply.
IP 67 is not automatically better than IP 65. A component which
fulfils the IP 67 criteria will therefore not automatically also
meet the criteria for IP 65. |
| Degrees of protection against the infiltration
of impurities |
Degrees of protection against the damaging
effects of water |
| 1st Digit |
Brief
Description |
Definition |
| 0 |
No protection |
- |
| 1 |
Protection
against particulate, 50 mm and larger |
The probe (a
sphere with a diameter of 50 mm) may not fully penetrate
the enclosure. |
| 2 |
Protection
against particulate, 12.5 mm and larger |
The probe (a
sphere with a diameter of 12.5 mm) may not fully penetrate
the enclosure. |
| 3 |
Protection
against particulate, 2.5 mm and larger |
The probe (a
sphere with a diameter of 2.5 mm) may not fully penetrate
the enclosure. |
|
| 4 |
Protection
against particulate, 1.0 mm and larger |
The probe (a
sphere with a diameter of 50 mm) may not penetrate the
enclosure at all. |
| 5 |
Protection
against dust |
The infiltration
of dust is not entirely eliminated. However, dust may not
penetrate the enclosure to such an extent that
satisfactory functioning of the device or safety is
impaired. |
| 6 |
Dust-proof |
No dust
infiltration |
|
| 2nd Digit |
Brief
Description |
Definition |
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| 0 |
No protection |
- |
| 1 |
Protected against
dripping water |
Vertically
dripping water must not have any damaging effect. |
| 2 |
Protected against
dripping water with |
Vertically
dripping water must not have any damaging effect with the
enclosure inclined to an angle of up to 15° from the
vertical in either direction. |
| 3 |
Protected against
spraying water |
Water sprayed at
an angle of up to 60° from the vertical at either side of
the enclosure must not have any damaging effect. |
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| 4 |
Protected against
splash water |
Water splashed at
the enclosure from any direction must not have any
damaging effect. |
| 5 |
Protected against
water-jet streams |
Water-jet streams
which make contact with the enclosure from any direction
must not have any damaging effect. |
| 6 |
Protected against
high power water-jet streams |
High power
water-jet streams which make contact with the enclosure
from any direction must not have any damaging effect. |
| 7 |
Protected against
intermittent submersion in water |
Water may not
enter the enclo-sure to such an extent that dam- aging
effects become apparent, when the enclosure is intermit-
tently submerged in water under standardized pressure and
time conditions. |
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| 8 |
Protected against
continuous submersion in water |
Water may not
enter the enclo-sure to such an extent that dam- aging
effects become apparent, when the enclosure is
continuously submerged in water. Sub-mersion conditions
must be agreed upon by the manufacturer and the user.
However, the con-ditions must be more severe than those
listed under code 7. |
| 9 |
Protected against
highly pressurised water and steam jet cleaning |
Highly
pressurised water which is directed at the enclosure from
any direction must not have any damaging effect. |
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