The scratching tool is designed according to IEC60335-2-24 fig. 102 and GB4706.13 Fig 102. It’s used to perform scratch tests on the accessible component surfaces of all protected cooling systems in appliances, including accessible surfaces that are in close contact with the protected cooling system.
The vertical impact hammer is designed according to IEC60068-2-75 test Ehc, the hammer consists by a striking element which falls freely from rest through a vertical height on to the specimen surface held in a horizontal plane, and the fall of the striking element shall be along a guideway, the guideway shall not rest on the specimen and the striking element shall be free of the guideway on the striking the specimen , the mass of striking element is equal to equivalent mass . 2J striking element equip with Φ 40 mm*4 71 mm guideway, 5J striking element equip with Φ6 8 mm*3 85 mm guideway, 10J striking element equip with Φ8 9 mm* 337 mm guideway, 20J striking element equip with Φ10 8 mm* 520 mm guideway, 50J striking element equip with Φ12 9 mm* 650 mm guideway.
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