The C.A6474 is designed for use with the C.A6472 earth tester to measure pylon earths. When used with the C.A6472, the C.A6474 allows the following types of measurements:
- Global earth of pylons
- Earth resistance of each of the pylon's footings
- Quality of the overhead protective earth cable connection
- Active measurement (injection by the C.A 6472)
- Passive measurement (use of stray currents)