Ball Pressure Apparatus meets the standard of EN/IEC 60695-10-2, Clause 5.1, Figure 1.
The ball pressure test as a method for evaluating the softening temperature and accelerated material
flow under load of polymeric materials and parts of end products in their ability to resist abnormal heat.
This test is applicable to the materials used in electrotechnical equipment,
subassemblies and components, and to solid electrical insulating materials except ceramics.
Some relevant standards:
IEC 60335 series, IEC 60598 series, IEC 60881-1, IEC 60950-1 and similar.
Ball Pressure Apparatus Description:
It shall consist of a 5 mm ± 0,05 mm diameter pressure ball (a finished steel ball for rolling bearings in accordance with ISO 3290-1)
attached to a system of weights designed to apply a downward force equivalent to a 20 N ± 0,2 N load including the mass of the pressure ball.
Test specimen support: Ø 50 mm, haight: 100 mm.
To mount a separate thermocouple at the center of the test speciment support, a hole of 1.2 mm diameter was drilled, approximately 3 mm below the surface.