Ball Pressure Test Apparatus
IEC 60884-1 2013 clause 25.2, 25.3 and figure 37
This device is use for heat resistance test to verify the heat resistant performance of insulating material covers and outer parts of the electric appliance
Insulating material covers and outer parts of the electric appliance
This device is made in according with figure 37.
The test is made in a heating cabinet at a temperature of (125 ± 2) °C. After 1 h the ball shall be removed from the specimen, which is then immersed within 10 s, in cold water for cooling down to approximately room temperature. The diameter of the impression caused by the ball is measured and shall not exceed 2 mm.
- Radius of steel ball: SR2.5mm
- Press force: 20N
- Support base: Diameter 50mm, length 100mm, with a thermometer hole, made of stainless steel