Chauvin Arnoux CA 6472 Earth ground meter
With the earth and ground resistance tester C.A 6472 complete and fast assessments of earthing of all kinds are possible, since the device combines all functions for earthing measurements in itself. In conjunction with the Pylon Box C.A 6474, ground measurements on high-voltage masts are even possible, in operation, simple, comprehensive and completely safe. Two operating modes are possible for practical use:Automatic mode: An optimal measurement is guaranteed with just a few simple steps: Selection of the measuring function on the large rotary switch, simple pressing OF THE START / STOP button, reading of the result. By default, the device selects a test signal frequency of 128 Hz or a suitable other frequency if there are interference signals.In expert mode, the user can specify all measurement parameters themselves: Test signal frequency and voltage, frequency cycle (sweep mode), etc. and can display additional measurement results such as the interference signal level and the interference signal frequency, etc. for deeper analysis.The earth resistance and earth resistance meter C.A 6472 also enables the following measurements:Three-pole earthing measurements with an auxiliary conductor and probe, whereby with the C.A 6472 also the resistances of the probe Rs and the auxiliary transmitter Rh as well as the possible interference voltages can be measured, so that the measurement results can be precisely evaluated.Four-pole and selective earthing measurements with pliers: In the case of several parallel earthing circuits, each circuit can be measured individually with the help of a clamp transformer. Particularly suitable for very small earthing resistors.Measurements of ground loops with 2 pliers: Measure each ground loop individually without interruption.Earth coupling measurement: The C.A 6472 automatically calculates the coupling resistance using three earthing measurements.Measurement of the specific earth resistance: Calculate automatically using the Wenner or Schlumberger method.Ground potential measurements: Determine changes in the ground potential as the distance from the associated ground point increases.This text is machine translated.