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VDE test


IMPACT TEST

There are two tests carried out: The first test is performed at an ambient of -25±3°C(the tools lay in a cold chamber for 2 hours), if with C marked test need to be done by -40±3°C and is carried out 120 seconds after the tools have been removed from the chamber. The second test is carried out at ambient temperature of 23±5°C. The hammer is allowed to fall freely on three different places of the insulated material. The test piece is acceptable if t he handle is not cracked, broken or does not show signs of faking. This test can be compared to a fall of the tool from a height of 0.6m at a temperature of -25°C and a fall from a height of 2m at room temperature.


ELECTRICAL TEST

Before testing, the tools are immersed in a bath of water at room temperature of 24 hours(±0.5hours) The test pieces are acceptable if there is no electrical discharge, spark over or flashover, during the 3 minutes of testing at a voltage of 10 KV.


STAMP TEST

The indenter, loaded with a weight of 20N and a voltage of 5 KV, is applied to the centre of the handle. The test is successful if the test piece subsequently passes the electrical test.


INSULATION TEST

Before testing the test piece is heated to 70°C±3°C for 168 hours. The hanger is loaded with weights(500N), wrenches and sockets sets with weights(100N). The duration of test is 3 minutes after the test piece has been removed from heat. The test piece is acceptable if the handle remains firmly attached to the conducting part after 3 minutes of testing.


FLAME RETARDANCY TEST

The flame is applied to the test piece for 10 seconds. The test piece is acceptable if the height of the flame on the burning handle does not exceed 120mm in an observation period of 20 seconds after the burner has been removed.

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