Information technology equipment - Safety
Part 1: General requirements
§ 1.7.11 Durability

Compliance is checked by inspection and by rubbing the marking by hand for 15 s with a piece of cloth soaked with water and again for 15 s with a piece of cloth soaked with hexane.

After this test, the marking shall be legible; it shall not be possible to remove marking plates easily and they shall show no curling.

Ed.2 equivalent to VDE 0411-1

Safety indications for electric devices for measurement, control and laboratory use
Part 1: General indications

This regulation requires that both material and the print shall withstand‚ cleaning with chemical agents commonly used in industry.

By rubbing manually by hand, without excessive pressure, for 30 seconds with a cloth soaked in the specific detergent or, if not specifi ed, Isopropyl Alcohol.

This test was created to simulate cleaning with chemical products commonly used on various surfaces.

By wiping with a cloth soaked in 95% Ethanol 30 times and making a visual inspection after every 10 passes.

Environmental testing

Part 2: Test - Test Ka: Salt mist

The test methods listed by the standard are the following:

•  Concentration of 50 ± 5 g/l of Sodium Chloride;
•  pH of the solution between 6.5 and 7.2;
•  Temperature inside the cabin 35 ± 2°C.

Self-adhesive media are applied to plastic surfaces, while cable markers are applied to cables with PVC insulation.

After the test, the samples must undergo a visual examination and, if necessary, electrical and mechanical controls as required by appropriate regulations. At the end of the test, the print should still be legible.

Resistance to solvent vapour is verified by the condition of the test sample following exposure.

The standard requires the sample to be placed in a container of the specified solvent.

The test samples must be suspended vertically with the lower edge around 150 mm above the surface of the test solvent. During the exposure, the liquid must not evaporate completely and, if necessary, must be topped up.

The temperature of the test solvent must be 23 ± 2 °C and the duration of exposure must be 168h ± 1 (seven days).

After removal from the container, each test sample must be examined to determine whether there has been any change in appearance, loss of adherence of the sub layer, exfoliation, detachment, bulging or other signs of deterioration.

The solvents used by Cembre for this test are: Acetone, Ethanol, Hexane

Methods of exposure to laboratory light sources

Part 2: Xenon arc lamps

Exposure to artificial laboratory light, in Solarbox model 1500E.

The properties of the material and the legibility of the print are verified after the test.

• Temperature of black panel: 65°C ± 3°C;
• Exposure: continuous;
• Radiation: 550 W/m²
• Xenon 1500 W lamp;
• Borosilicate 280 mm filter (outdoor);
• External testing temperature: 20°C ± 5°C.