First digit: 6
|
|
Protection for
persons: |
Protection against a wire touching dangerous parts. |
| Definition:
|
A body 1,0 mm in diameter must not be able to
enter. |
IP 6X
|
| Test conditions: |
The accessing probe is pushed against every
opening of the enclosure with a standardised force or is inserted through
the opening. |
| Conditions for acceptance: |
The protection is satisfactory if a
sufficient distance between the accessing probe and dangerous parts is
kept. |
|
Protection for
equipment: |
Sealed against dust |
| Definition:
|
Dust must not enter at all. |
| Test conditions:
|
The test is carried out in a dust chamber in
which talcum powder is being kept suspended in the air by means of a dust
distributor or similar device. The enclosure which is being tested is
placed in the test chamber while a vacuum pump keeps the pressure in the
enclosure below the atmospheric pressure of the environment according to
the standard. |
| Conditions for acceptance: |
The protection is satisfactory if there is no
visible dust deposit within the enclosure after completion of the test. |
|
Second digit: 6
|
|
Protection against
water : |
Protection against powerful water jet. |
| Definition:
|
A strong water jet directed at the enclosure
from any direction must not have any harmful effects. |
IP X6
|
| Test conditions:
|
A jet nozzle with an inside diameter of 12.5
mm splashes a volume flow of 100 litres per minute from a distance of 2.5
- 3 metres from all sides onto the enclosure. The test time is 3 minutes. |
| Conditions for acceptance:
|
Should water have penetrated, it must not
- be present in quantities which impair the good working order of the
operating material or represent a safety hazard;
- deposit on non-conducting parts where it could lead to creep currents;
- come in contact with live parts or coils which are unsuitable for
operating in wet conditions;
- collect near the wire end or possibly penetrate the wire. |
