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Agreed text:
9.18 CUT-THROUGH RESISTANCE
This test shall be performed to check the behaviour of the finished wire or core when it comes into contact with metal cutting edges.
It shall be performed on 3 samples, each 30cm long, using suitable test equipment. Each sample shall be positioned on the test equipment such that a cutting needle is perpendicular to the cable axis. The needle used shall have a diameter of 0.45mm (size No. 10). The test shall be carried out at Tamb = +23 ±3°C.
The needle shall be gradually loaded until contact is made between the needle and the conductor. The needle shall either be loaded at a maximum rate of 6kg/minute or moved at a maximum speed of 2mm/minute. The test shall be performed 3 times on each of the 3 samples; each sample shall be moved forward 75mm between tests and turned through an angle of 120°, always in the same direction. The cut-through load shall be recorded for all 9 tests.
The mean cut-through load calculated from the 9 tests shall not be less than the relevant value specified in the Detail Specification.
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