Code

Letters

Solid Particle Protection

Liquid Ingress

Protection

Supplementary

IP

0-6

0-9

Letter

Required

Required

Required

Optional

Level Sized

Effective Against

Description

0

-

X means no data is available to specify a protection rating about this criterion.

1

> 50mm

No protection against contact and ingress of objects

2

>12.5mm

Any large surface of the body, such as the back of a hand, but no protection against deliberate contact with a body part

3

>2.5mm

Fingers or similar objects

4

>1mm

Tools, thick wires, etc.

5

Dust Protected

         Ingress of dust is not entirely prevented, but it must not enter in sufficient quantity to interfere with the safe operation of the equipment.

6

Dust-tight

No ingress of dust; complete protection against contact (dust-tight). A vacuum must be applied. Test duration of up to 8 hours based on airflow.

Level

Protection against

Effective Against

Details

0

None

-

No protection against ingress of water

1

Dripping water

Dripping water (vertically falling drops) shall have no unsafe effect on the specimen when mounted upright onto a turntable and rotated at 1 RPM.

Test duration: 10 minutes

Water equivalent to 1 mm (0.039 in) rainfall per minute

2

Dripping water when tilted at 15°

Vertically dripping water shall have no harmful effect when the enclosure is tilted at an angle of 15° from its normal position. A total of four positions are tested within two axes.

Test duration: 2.5 minutes for every direction of tilt (10 minutes total)

Water equivalent to 3 mm (0.12 in) rainfall per minute

3

Spraying water

Water falling as a spray at any angle up to 60° from the vertical shall have no harmful effect, utilizing either: a) an oscillating fixture, or b) A spray nozzle with a counterbalanced shield.

Test a) is conducted for 5 minutes, then repeated with the specimen rotated horizontally by 90° for the second 5-minute test. Test b) is conducted (with a shield in place) for 5 minutes minimum.

For a spray nozzle:

Test duration: 1 minute per square meter for at least 5 minutes[4] Water volume: 10 liters per minute (0.037 impgal/s) Pressure: 50–150 kPa (7.3–21.8 psi)

For an oscillating tube: Test duration: 10 minutes Water volume: 0.07 liters per minute (0.00026 impgal/s) per hole

4

Splashing of water

Water splashing against the enclosure from any direction shall have no harmful effect, utilizing either:

a) an oscillating fixture, or b) A spray nozzle with no shield. Test a) is conducted for 10 minutes. b) is conducted (without shield) for 5 minutes minimum.

Oscillating tube: Test duration: 10 minutes, or spray nozzle (same as IPX3 spray nozzle with the shield removed)

5

Water jets

Water projected by a nozzle (6.3 mm (0.25 in)) against enclosure from any direction shall have no harmful effects.

Test duration: 1 minute per square meter for at least 3 minutes

Water volume: 12.5 litres per minute Pressure: 30 kPa (4.4 psi) at distance of 3 meters (9.8 ft)

6

Powerful water jets

Water projected in powerful jets (12.5 mm (0.49 in)) against the enclosure from any direction shall have no harmful effects.

Test duration: 1 minute per square meter for at least 3 minutes

Water volume: 100 liters per minute (0.37 impgal/s) Pressure: 100 kPa (15 psi) at distance of 3 meters (9.8 ft)

7

Immersion, up to 1 meter (3 ft 3 in) depth

Ingress of water in harmful quantity shall not be possible when the enclosure is immersed in water under defined conditions of pressure and time (up to 1 meter (3 ft 3 in) of submersion).

Test duration: 30 minutes.

Tested with the lowest point of the enclosure 1,000 mm (39 in) below the surface of the water, or the highest point 150 mm (5.9 in) below the surface, whichever is deeper.

8

Immersion, 1 meter (3 ft 3 in) or more depth

The equipment is suitable for continuous immersion in water under conditions which the manufacturer shall specify. However, with certain types of equipment, it can mean that water can enter but only so that it produces no harmful effects. The test depth and duration are expected to be greater than the requirements for IPx7, and other environmental effects may be added, such as temperature cycling before immersion.

Test duration: agreement with the manufacturer

Depth specified by the manufacturer, generally up to 3 meters (9.8 ft)

9K

Powerful high-temperature water jets

Protected against close-range high-pressure, high-temperature spray downs.

Smaller specimens rotate slowly on a turntable from 4 specific angles. Larger specimens are mounted in the intended position when used, no turntable required, and are tested freehand for at least 3 minutes at a distance of 0.15–0.2 meters (5.9 in – 7.9 in).

The specific requirements for the test nozzle are shown in figures 7, 8, & 9 of IEC (or EN) 60529.

This test is identified as IPx9 in IEC 60529.

Test duration: Fixture: 30 sec. in each of 4 angles (2 min. total), Freehand: 1 min/m2, 3 min. minimum

Water volume: 14–16 liters per minute (0.051–0.059 impgal/s) Pressure: 8–10 MPa (80–100 bar) at distance of 0.10–0.15 meters (3.9 in – 5.9 in) Water temperature: 80 °C (176 °F)