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Help CenterIEC60335-1 Clause 21.2, IEC60950-1 Figure 2K Abrasion Resistance Test for Coating Layers, 40° Scratches Pin
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IEC60335-1 Clause 21.2, IEC60950-1 Figure 2K Abrasion Resistance Test for Coating Layers, 40° Scratches Pin
Accessible parts of solid insulation shall have sufficient strength to prevent penetration by sharp implements.
Compliance is checked by subjecting the insulation to the following test, unless the thickness of supplementary insulation is at least 1 mm and that of reinforced insulation is at least 2 mm.
The insulation is raised to the temperature measured during the test of clause 11. The surface of the insulation is then scratched by means of a hardened steel pin, the end of which has the form of a cone with an angle 40°. Its tip is rounded with a radius of 0,25± 0,02 mm. The pin is held at any angle from 80° to 85° to the horizontal and loaded so that the force exerted along its axis is 10N± 0,5N. The scratches are made by drawing the pin along the surface of the insulation at a speed of approximately 20 mm/s. Two parallel scratches are made. They are spaced sufficiently apart so that they are not affected by each other, their length covering approximately 25% of the length of the insulation. Two similar scratches are made at 90° to the first pair without crossing them.
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