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What is the theory of operation of the Vigilohm fault locating Kit mobile generator XGR ?

Theory of operation of the Vigilohm fault locating Kit mobile generator XGR is as follows:
  • The XGR generator injects a 2.5 Hz AC voltage between the installation and the earth, thereby creating a leakage current which passes through the installation insulation impedance.
  • The XRM mobile receiver is associated with one of the three tong-type probes, XP15, XP50 or XP100, and detects this leakage current at 2.5 Hz. It displays a value between 1 and 19 according to the current passing through the probe, thus detecting the leakage current.
  • Three current probes are available, the XP15, XP50 and the XP100, for cables with diameters up to 12, 50 and 100 mm respectively. Older probe models are not compatible with the XRM.
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