Aging test in accordance with IEC 60947-7-1/-2
Terminal blocks are characterized, among other things, by long lifecycles and their ability to safely withstand continuous operating temperatures of +125°C. In order to ensure that the terminal marking and printing also satisfies these requirements, Phoenix Contact uses marking materials with heat stabilizers.
To simulate usage over several years, the marking materials, together with the terminal blocks or conductors, are subjected to a defined temperature cycle in the climate cabinet. The minimum temperature in the climate cabinet is set to +20°C and the maximum temperature to +120°C (+80°C for PVC).
During the warm-up phase and the ten-minute holding phase, the test objects reach the maximum approved operating temperature. The cool-own phase then follows. The test consists of a total of 192 cycles.
Without exception, Phoenix Contact marking materials are tested in accordance with IEC 60947‑7‑1/-2. All plastics used also have sufficient safety reserves.
Resistance to oil and chemicals in accordance with DIN EN ISO 175
Physical and chemical processes or reactions can occur as a result of external media, such as liquids or gases. This can result in a change to the plastic’s properties. The plastic can be damaged or even destroyed.
Printing and markings can also be affected by these changes. To avoid this, Phoenix Contact uses only plastics as well as printing and marking materials that have been tested in accordance with DIN EN ISO 175.
UV light resistance in accordance with DIN EN ISO 4892-2 and DIN EN ISO 60068-2-5
UV B components restrict mechanical properties in plastics. As a consequence, printing and markings can be damaged to a greater or lesser extent depending on the type of plastic.
Marking materials from Phoenix Contact can be stored in dry as well as humid atmospheres under UV radiation and are tested in accordance with the above standards.
Corrosion test in accordance with DIN 50018
Extreme ambient influences place high demands on components and their markings. The following test method, based on DIN 50018, describes the corrosion test in a condensation changing climate with an atmosphere that contains sulfur dioxide.
Two liters of distilled water and one liter of SO2 gas are introduced into a climate cabinet. During the test and at a test temperature of +40°C, an acidic atmosphere is formed, which affects the material surfaces of the test objects. After a test period of eight hours, the test objects dry for 16 hours with the door open.
Finally, a microscopic visual inspection is performed. All marking materials used by Phoenix Contact conform to this demanding standard and are resistant to aggressive substances.
Salt spray in accordance with IEC 60068-2-11/-52
In the shipbuilding industry in particular, technical components must be marked in a way that is legible at all times in corrosive atmospheres. The salt content of the air in combination with the increased humidity places high demands on the printing and materials used.
The impact of the climate at sea can be simulated on the basis of IEC 60068-2-11/-52. The resistance of the materials is tested with salt spray in a corrosive atmosphere. The test objects are placed in the test chamber and subjected to a finely dosed spray of five percent sodium chloride solution (NaCl; pH value 6.5 - 7.2) at a temperature of +35°C for a period of 96 hours.
A microscopic inspection is performed after the test. Phoenix Contact marking materials satisfy these stringent requirements and can be used even in extreme climatic conditions.
Solvent resistance in accordance with EN 60464‑2:2001
Markings and labeling must be resistant to a variety of solvent vapors. In accordance with the above standard, printing and markings are stored in acetone, n-hexane, and ethanol atmospheres for ten days and must be legible afterwards.
Abrasion and wipe resistance in accordance with DIN EN 61010-1/DIN EN 61439-1
Markings and printing must be resistant to standard industrial cleaning agents. The above standard prescribes the use of a soft cloth with water, isopropanol, petroleum ether, and n-hexane to clean markings and printing. They must still be legible after cleaning.
The marking materials from Phoenix Contact meet the high requirements for abrasion and wipe resistance and can be used in any application.
Scratch resistance in accordance with DIN EN ISO 1518
Markings and printings must also be resistant to point or linear mechanical loads. For this reason, Phoenix Contact tests all markings and printing for scratch resistance in accordance with the above standard.
A scratching tool with a hemispherical tip (1 mm in diameter) is applied to the test object with a force between 2 N and 6 N depending on the printing method. This is followed by a visual and microscopic inspection of the test objects. Phoenix Contact marking materials satisfy these high mechanical requirements.
Vibration resistance in accordance with IEC 60068-2-6
This test demonstrates the vibration resistance and the tight fit of the marking materials under the influence of continuous vibrations. Harmonic, sinusoidal vibrations are applied to the test object to simulate rotating, pulsating, or oscillating forces.
The test is performed on each of the three spatial axes (x, y, z). In the test, the objects are exposed to a frequency range of 3 Hz to 150 Hz at a speed of one octave per minute. The RMS value of the acceleration is up to 50 m/s2.
The test objects are tested on the three axes for two hours each. The marking materials must not be damaged in such a way that would impair their further use. All Phoenix Contact marking materials conform to the standard and are particularly suitable for applications where they are subjected to high levels of vibration.
Vibration test in accordance with DIN EN 61373 – broadband noise (degree of severity in accordance with DIN EN 50155)
In many applications and especially in transportation technology, marking materials are subjected to vibrations and shocks. For a practical simulation of vibration stress, the test objects are tested for vibration resistance at increasing and decreasing frequencies and amplitudes.
In the test, the objects are exposed to a frequency range of 5 Hz to 150 Hz. The RMS value of the acceleration is up to 42.5 m/s2. The test objects are tested on the three axes (x, y, z) for five hours each. The components and marking materials must not be damaged in such a way that would impair their further use. All Phoenix Contact marking materials satisfy these stringent vibration requirements.
Grid test in accordance with DIN EN ISO 2409
An adhesive tape test is carried out for this. A transparent strip of self-adhesive tape with an adhesive strength of 10 ±1 N is attached to the printing or marking being tested. It is then pulled away from the surface at an angle of 60° to the direction of tensile force at a speed of approx. 1 cm/s.
There should be no marks from the printing on the adhesive tape after the test. Phoenix Contact marking materials conform to this standard. They are tough and resistant to peeling.
Adhesive strength test in accordance with FINAT test method No. 2
The purpose of this test is to compare the adhesive strength of labels on various base materials. To this end, a strip of labels (25 mm x 175 mm) is applied to the respective base material with a specified force.
After a defined storage period, the strip is removed from the base material at an angle of 90° and a speed of 300 mm/min. The adhesive strength is specified in N/25 mm. The test therefore enables the most suitable label to be selected for the application.