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Primary Cable Fault Locating
Directional Impulse Detector - Timco Instruments, LLC
The Directional Impulse Detector ( D.I.D.) is a compact handheld detector used to locate primary cable faults by sensing the magnetic field generated by the current pulse from a high voltage discharge device (thumper). A meter deflection indicates the intensity of the received signal. No deflection indicates that you have walked beyond the fault or away from the cable.