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The “Twisted-Field” method can also be applied to three- or four-core
cables without any problems.
For four-core cables, it is recommended to connect the identification
generator to two opposite strands to be able to identify the described
polarity reversal as clearly as possible (see images).
The following diagram illustrates the signal response when the sensor is
moved around a four-core cable in a radial direction:
LCI TX-440
or CI TX
The following diagram illustrates the signal response when the sensor is
moved along a four-core cable:
LCI TX-440
or CI TX
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