Electrical safety check

FOGGING TEST IN THE
AUTOMOBILE INTERIOR

The fogging test is an essential test for materials used in vehicle interiors. It ensures that your components do not release unwanted volatile substances that could deposit on windows or other surfaces. The fogging test is an essential test for determining the outgassing of volatile organic compounds (VOCs) from materials in the vehicle interior. It ensures that emissions, which can appear as fog or mist on cold surfaces such as windscreens, are minimized to ensure driver visibility and safety. These deposits can not only impair visibility, but also reduce the perceived quality and comfort in the vehicle.

Electrical safety in the automotive industry

TESTING STANDARDS AS THE KEY TO QUALITY ASSURANCE

In the automotive industry, ensuring electrical safety and compliance with standards is of central importance. Various test standards and norms play a decisive role in this context. These are designed to guarantee the safety, reliability and performance of electrical systems in vehicles.

We support manufacturers in achieving the highest standards and ensuring that their vehicles are not only safe, but also reliable and durable. The comprehensive testing procedures help to increase customer confidence and continuously improve quality in the automotive sector.

Test methods and procedures

In order to meet the requirements of the individual standards and IP classifications, we use state-of-the-art technologies and procedures in our test laboratory:

Mechanical tests: These include vibration tests, shock tests and temperature cycling tests to check the physical robustness of the components.
Electrical tests: Tests to check insulation resistance, leakage currents and short circuits are essential to ensure electrical safety.
Environmental simulation: We use climatic tests to simulate extreme conditions in order to test the reliability and service life of the components.

CONTACT OUR EXPERTS

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Standard VW 80000

The VW 80000 standard is an important part of the quality and safety standards defined by the Volkswagen Group for electrical and electronic components. This standard defines specific requirements for the design, materials and test criteria to ensure that the electrical systems in vehicles function under various conditions. The focal points of VW 80000 include:

Insulation safety: the standard requires comprehensive insulation strength testing to ensure that no electrical breakdowns occur, thus ensuring the safety of occupants.

Environmental resistance: Components must be designed to withstand extreme temperatures, humidity and chemical influences that can occur during driving.

Durability and reliability: Long-term testing is required to ensure that components continue to operate reliably throughout the life of the vehicle.

MBN 50306 / MBN 10567 (formerly LV124)

MBN 50306 / MBN 10567, formerly known as LV 124, are German standards that place specific requirements on electrical and electronic components in vehicles. They serve to ensure the functionality and durability of these components under the extreme conditions of automotive operation.

The standards define test conditions and tests that ensure that components such as cables, plug connections, control units and sensors can withstand the tough demands of everyday vehicle use.

These include tests on

Temperature resistance
Influence of moisture
Vibration resistance
Electromagnetic compatibility (EMC )

GS 95024-2

GS 95024-2 is a standard for electrical wiring in vehicles. It defines safety requirements and test methods for cables, wires and electrical components in order to prevent fire hazards, short circuits and malfunctions .

Manufacturers must ensure that their electrical systems meet the specified safety and quality standards in order to guarantee the safety and reliability of vehicles.

The most important test methods include

Dielectric strength test

Heat resistance test

Short circuit test

Mechanical stress tests

Insulation test

Fire behavior test

IP tests

The IP (Ingress Protection) tests are another important aspect of electrical safety. These tests classify the degree of protection of enclosures against the ingress of solid foreign bodies and water. The IP classification consists of two digits that indicate the protection against dust and water. The following aspects are particularly relevant in the automotive industry:
- Dust-tightness: Components must be dust-tight to ensure functionality and longevity, especially in environments with a lot of dirt and dust.
- Watertightness: Vehicles are exposed to various weather conditions. Therefore, electrical systems must be designed to be protected against splashing water and temporary submersion.

FAQ

Frequently asked questions about the fogging test

What is the fogging test? The fogging test measures the release of volatile substances from materials that can form deposits on surfaces such as windows.

How long does a fogging test take? As a rule, you will receive the results within a few days, depending on the complexity of the materials.

What do I do if the exam is negative? We offer you comprehensive advice and recommendations to take appropriate measures and find alternative materials.

What sample quantities are required for a fogging test?

The sample quantities required for a fogging test depend on the standard and the test method used. Here are the general guidelines:

1. standard DIN 75201 (type A and type B)

Type A (glass plate method):
A sample quantity of 10 cm² is typically required. The sample is placed on a heated plate in a sealed chamber and the volatiles released condense on a glass plate above.
Type B (aluminum foil method):
Similar to type A, a sample volume of approximately 10 cm² is used. However, the volatile substances condense on a cooled aluminum foil.

2. standard ISO 6452 (international standard)

Sample quantity:
Again, a sample size of approximately 10 cm² is typically required to evaluate the amount of volatiles released at elevated temperature.

3. other specific requirements

Depending on the specific requirements of the customer or OEM standards, sample quantities may vary. It is important to check the respective standards or test requirements carefully.

What is the difference between the reflectometric and gravimetric test method according to DIN 75201?

Method A - Reflectometric method:

Principle: This method measures the change in reflectivity on a glass plate on which volatile components from the material sample are deposited.
Procedure: A material sample is heated in a beaker while a glass plate above it is cooled to 21°C. The temperature difference causes the volatile components to condense on the glass plate. The reflectance index of the fogged glass plate is then measured to determine the amount of condensed material.
Application: This method is particularly suitable for materials for which an exact determination of the optical fog effect is required.

Method B - Gravimetric method:

Principle: This method measures the weight of condensed volatiles on an aluminum foil.
Procedure: The material sample is heated in a beaker while an aluminum foil disc is cooled to 21°C. After 16 hours, the amount of condensed material on the foil is weighed.
Application: This method is ideal for an accurate quantitative determination of the amount of condensed volatiles.

FAQ

FREQUENTLY ASKED QUESTIONS ABOUT ELECTRICAL SAFETY TESTING

What is the electrical safety test?

The electrical safety test ensures that a vehicle's electrical systems work safely and reliably. It checks whether cables, plug connections, batteries and control units are correctly installed and insulated. The aim is to avoid risks such as short circuits, overheating or electric shocks.

What test methods and procedures are there?

Mechanical tests: These include vibration tests, shock tests and temperature cycling tests to check the physical robustness of the components.

Electrical tests: Tests to check insulation resistance, leakage currents and short circuits are essential to ensure electrical safety.

Environmental simulation: We use climatic tests to simulate extreme conditions in order to test the reliability and service life of the components.

Do you have any further questions? Our experts will be happy to answer your questions about various laboratory tests. Please feel free to contact us here. We look forward to processing your inquiry and helping you further.

Fogging

FOGGING TEST IN THE
AUTOMOBILE INTERIOR

Typical test methods

Electrical safety