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IP Testing Procedure

IP Testing Procedure

IP testing is generally done on enclosure which can be place indoor or outdoor to calculate the level of protection from water, dust or other solid objects. ITC India pvt ltd is capable to perform Ingress protection testing in its own premises. ITC has the calibrated nozzles, immersion tanks and dust chamber as demanded by standards.

ITC had created full facilities to do water and dust testing. All the IP testing is in its scope. All equipments are calibrated and are accurate to determine results. The Talcum powder used in Dust chamber is also as per IEC 60529 to test accurately.

We would like to discuss IP testing against water in details……

First of all, we will elaborate the IP against water. For IP X5 and IPX6, the EUT to be tested is placed on the proper stand with a maintained distance of 2.5 – 3 m between nozzles to enclosure as per standard requirement. Then comes the nozzles (12.5mm or 6.3mm), a nozzle as per requirement is being selected. Now we have to apply the pressure. A pressure of 12.5 l/min ±5 % is applied while using   6.3mm nozzle and the pressure of 100 l/min ± 5 % is applied while using 12.5mm nozzle for 3 mins duration. Then a visual inspection is done for the any water present inside the enclosure.

For IP X4, the EUT is placed on the stand. A oscillating tube rotates at an angle of 180° vertically sprays the water on EUT.  The nozzles of oscillating tube spray water at 0.07 l/min ± 5 % per hole multiplied by number of holes i.e.10l/min ±5 %. The duration of the test is 10 min. after the test, engineer visually inspect for any water leaks by EUTs.

For IPX7, the EUT is fully immersed in water at level of 150 mm excluding the height of the sample. The test is performed for 30 mins.

For IPX8, the EUT is immersed in water 1 m above from the bottom of enclosure. The test is performed for 24 hr or as per manufacturer demand.

IP X1, IP X2 and IP X3 are also performed in the lab.

IP codes

The degree of protection provided by an enclosure is indicated by IP code in following way:

IP Code

Where a characteristic numeral is not required to be specified, it shall be replaced by the letter “X” (“XX” if both numerals are omitted.)

Additional letters and /or supplementary letters may be omitted without replacement.

Where more than one supplementary letter is used, the alphabetic sequence shall apply.

If an enclosure provides different degree of protection for different intended mounting arrangements, the relevant degree of protection shall be indicated by the manufacturer in the instructions related to the respective mounting arrangements.

IP codes and their meanings:

We would like to represent it in a tabular form:

Degree of protection
Protected againstDefinition
IP 0XNon –protected
IP 1XAccess to hazardous parts with the back of a hand.An access probe, sphere of 50 mm Ø, shall have adequate clearance from hazardous parts
Solid foreign objects of 50 mm 2An object probe, sphere of 50 mm Ø , shall not fully penetrate
IP XXBAccess to hazardous parts with finger.A jointed test finger of 12 mm Ø , 80 mm length, shall have adequate clearance from hazardous parts
Solid foreign objects not required.
IP 2XAccess to hazardous parts with fingerA jointed test finger of 12 mm Ø , 80 mm length, shall have adequate clearance from hazardous parts
Solid foreign objects of 12.5 mm Ø .An object probe, sphere of 12.5 mm Ø , shall not fully penetrate.
IP 3XAccess to hazardous parts with a tool.An access probe of 2.5 mm Ø shall have adequate clearance.
Solid foreign objects of 2.5 mm Ø .An object probe of 2.5 mm Ø shall not penetrate at all.
IP 3XDAccess to hazardous parts with a wireAn access probe of 1 mm Ø shall have adequate clearance.
Solid foreign objects of 2.5 mm Ø .An object probe of 2.5 mm Ø shall not penetrate at all.
IP 4XAccess to hazardous parts with a wire.An access probe of 1.0 mm Ø shall have adequate clearance.
Solid foreign objects of 1.0 mm Ø.An object probe of 1.0 mm Ø shall not penetrate at all
IP 5XAccess to hazardous parts with a wire.An access probe of 1.0 mm Ø shall have adequate clearance.
Dust (protected).Ingress of dust is not totally prevented, but dust shall not penetrate in a sufficient quantity to interfere with satisfactory operation of the apparatus or to impair safety.
IP 6XAccess to hazardous parts with a wire An access probe of 1.0 mm Ø shall have adequate clearance.
Dust (tight).No ingress of dust
Degree of protection
Protected againstDefinition
IP X0Non –protected
IP X1Vertically falling water dropsVertically falling drops shall have no harmful effects
IP X2Vertically falling water drops when enclosure tilted up to 15º.Vertically falling drops shall have no harmful effects when the enclosure is tilted at any angle up to 15º on either side of the vertical.
IP X3Spraying WaterWater sprayed at an angle up to 60º on either side of the vertical shall have no harmful effects
IP X4Splashing WaterWater splashed against the enclosure from any direction shall have no harmful effects
IP X5Water jetsWater projected in jets against the enclosure from any direction shall have no harmful effects
IP X6Powerful water jetsWater projected in powerful jets against the enclosure from any direction shall have no harmful effects.
IP X7The effects of temporary immersion in water.Ingress of water in quantities causing harmful effects shall be prevented when the enclosure is immersed in 1m of water for 30 minutes.
IP X8The effects of continuous immersion in waterIngress of water in quantities causing harmful effects shall be prevented when the enclosure is continuously immersed in water under conditions which shall be agreed between manufacturer and user (>IPX7).
First CharacteristicNumeralTest means(Objects probes and Dust chamber )Test force
0No test required
1Rigid sphere without handle or guard( 50 mm dia)50N ± 10%
2Rigid sphere without handle or guard( 12.5 mm dia)30N ± 10%
3Rigid steel rod 2,5mm diameter with edges free from burrs3N ± 10%
4Rigid steel wire 1mm diameter with edges free from burrs1N ± 10%
5Dust chamber, with or without underpressure
6Dust chamber, with underpressure
Second Characteristic numeralTest meansWater flow rateDuration of test
0No test required
1Drip Box1 mm/min10 min
2Drip Box( Enclosure 15 ° tilted)3 mm/min.10 min
3Oscillating tube: distance max. 200mm / Spray nozzle; Spray ±60° from vert10 l/min1 min/m2 (≥ 5 min)
4As for 3; Spray ±180° from vert.
5Water jet hoze nozzle 6,3mm; distance 2,5 to 3m12.5 l/min1 min/m2 (≥ 3 min)
6Water jet hoze nozzle 12,5mm; distance 2,5 to 3m100 l/min
7Immersion tank; water-level on enclosure 0,15m above top, 1m above bottom30 min
8Immersion tank; water-level by agreementBy agreement

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