IP Su Testleri — IEC 60529 / ISO 20653

What Is IPX1–IPX9K?

IPX tests are a series verifying the water-protection levels defined in IEC 60529. They define conditions of increasing severity, from IPX1 vertical dripping to IPX9K high-temperature high-pressure jetting.

Purpose of IPX1–IPX9K

The purpose is to verify that the enclosure provides its declared protection level against water in its use environment.

Which Products Is IPX1–IPX9K Applied To?

Electrical appliance and fixture enclosures
Automotive infrastructure components
Outdoor electronic enclosures
Battery packs
Industrial panels and sensors

In Which Sectors Is IPX1–IPX9K Used?

ElectronicsElectricalAutomotiveDefenceAerospace

Standards Related to IPX1–IPX9K

IEC 60529degree of protection provided by enclosures (IP code) test
ISO 20653Protection against dust, water and contact (IP) in vehicles test
IEC 60598 (luminaires)

IPX1–IPX9K Conditions

IPX1 / IPX2: Vertical and 15° inclined drip
IPX3 / IPX4: Spraying up to 60° angle and spreading from all directions
IPX5 / IPX6: Water jet with standard-defined diameter nozzle (6.3 mm and 12.5 mm)
IPX7 / IPX8: Immersion (1 m, 30 minutes at IPX7)
IPX9K: High temperature high pressure jet (ISO 20653)

Equipment for IPX1–IPX9K

Dripping fixture and oscillating tube
Spray nozzles and hand shower
Jet nozzles and pressure control
Immersion tank
IPX9K high-pressure setup

Sample Requirements for IPX1–IPX9K

The sample must be tested with the actual enclosure and sealing
Cable entries and connectors must be in the assembled state
Insulation resistance must be measured before the test
The declared IP code must be stated in advance

Duration of IPX1–IPX9K

The duration defined in the standard is applied for each level; a typical IP programme takes half to one working day.

IPX1–IPX9K Procedure

1The declared IP code and the tests to be applied are determined.
2The specimen is placed in the defined position.
3The relevant water test is applied at the flow rate and duration defined in the standard.
4The sample surface is dried.
5The enclosure is opened to check for water ingress.
6Insulation resistance and function are re-measured.

IPX1–IPX9K Acceptance Criteria

The acceptance criterion is defined in IEC 60529: no ingress of water into the enclosure in a quantity that would impair safety or function.

Evaluation of Results

The amount and location of water ingress are assessed. Higher levels do not encompass lower ones; for example, a product passing IPX7 is not automatically deemed to pass IPX5.

IPX1–IPX9K Report

Applied standard and IP code
Tests applied, flow rates and durations
Observation of water ingress
Insulation resistance and function results
Photographs

Accreditation

EUROLAB holds internationally recognised accreditation obtained from accreditation bodies party to the IAF and ILAC multilateral recognition arrangements, under ISO/IEC 17025 for laboratory testing, ISO/IEC 17020 for inspection and surveillance, and ISO/IEC 17021-1 and ISO/IEC 17065 for system and product certification. This chain ensures the reports and certificates issued are accepted worldwide.

Whether this test can be offered within accredited scope depends on your product and the standard applied; since accreditation is method-based, the scope is confirmed in writing at the quotation stage.

Scope and authorisations

Related Regulations

LVD 2014/35/EU
Machinery Directive
UNECE R100 (battery enclosure)

Environmental and Climatic Testing — What Does This Testing Field Cover?

The section below describes the field that the IPX1–IPX9K test belongs to; the conditions and acceptance criteria of this particular test are given in the sections above. The scope specific to your product is confirmed in writing at the quotation stage.

Environmental testing shows whether a product withstands ambient factors such as temperature, humidity, pressure, solar radiation, dust, water and corrosive atmospheres. The aim is not to break the product but to bring forward, in ACCELERATED form, the conditions it will meet over its life.

Test profiles are derived from the product's real exposure, and that derivation is the actual engineering work of the field. A device operating in an enclosed office and one mounted on a pole are not tested with the same profile. The IEC 60068 series defines general methods, MIL-STD-810 military profiles, RTCA DO-160 aviation profiles and the ISO 16750 series location-based automotive profiles. A test applied without a profile selection produces both unnecessary cost and false confidence.

Temperature tests simulate three separate phenomena and all three produce different failure modes. Steady high/low temperature tests whether the material can operate at that temperature. Temperature CYCLING creates fatigue at joints between materials with different expansion coefficients — solder cracks appear here. Thermal SHOCK intensifies this effect through an abrupt transition.

There is a distinction in humidity testing too. Steady damp heat shows the diffusion of moisture into the material and its effect on insulation properties. Cyclic damp heat creates condensation: water droplets form on the cooling surface, and this is far more aggressive than dry humidity. Water ingress into enclosures, increased leakage current and corrosion usually appear in the cyclic test.

Dust and water protection is a separate body of work and is expressed by the IP code. The point to note here is that an IP test is not a DURABILITY test: it shows that protection is provided under defined and short-duration conditions, not resistance to long-term immersion or pressure washing.

The most common mistake in this family is translating a test result directly into a LIFE PREDICTION. Accelerated tests are designed for comparison and design verification; a reliable conversion between hours in a chamber and years in the field can only be established with a material-specific acceleration model calibrated against field data.

Functional monitoring determines the value of the test. Keeping a product in a temperature chamber and then switching it on does not show what happened DURING the test. In critical applications the product is operated throughout the test and its parameters are monitored; intermittent faults that appear and disappear can only be caught this way.

Method groups in this field

Temperature
Dry heat, cold, change of temperature and thermal shock; steady and cyclic profiles.
Humidity
Steady damp heat and cyclic damp heat; cycles with condensation are more aggressive.
Water and dust
IP protection tests: dripping, spraying, jets, immersion and dust tightness.
Radiation and ageing
Accelerated ageing by xenon arc and fluorescent UV, solar radiation simulation.
Pressure and altitude
Low pressure (altitude) and rapid pressure change tests.
Corrosive atmosphere
Salt spray, mixed flowing gas corrosion (simulating industrial atmospheres), mould and fungus tests.

Commonly confused in this field

Test duration cannot be converted into field life; a conversion made without an acceleration model is misleading.
Temperature cycling and steady temperature produce different failure modes; neither replaces the other.
If the product is not operated during the test, intermittent faults remain invisible; functional monitoring determines the value of the test.
IP protection is not evidence of durability; it shows protection under defined and short-duration conditions.
A test applied without profile selection both increases cost and gives false confidence.
The mounting and orientation arrangement affects the result; the report must document it.

Which decisions these results support

Design verification and qualification
Declaration of the protection class and operating temperature range
Reproducing field failures in the laboratory and root cause analysis
Supplier component approval
Decisions on warranty period and storage conditions

Related Tests

Frequently Asked Questions About IPX1–IPX9K

Does a product passing IPX7 also pass IPX5?

Not automatically. Immersion and jetting cause water ingress through different mechanisms. If both levels are to be declared, both must be tested separately.