The manual provides safety guidelines, operation steps, technical specifications, and maintenance instructions for the C.A 6472 grounding resistance tester.
This user manual explains how to safely set up, operate, and maintain the C.A 6472 grounding resistance tester. It includes detailed safety warnings, preparation steps, and a description of the instrument’s front‑panel controls and connections.
Technical specifications such as voltage limits, environmental operating ranges, and measurement capabilities are listed, followed by maintenance, calibration, warranty information, and ordering details for accessories and optional parts. This manual is written in Chinese.
| Maximum earth voltage | 50 V |
|---|---|
| Maximum instantaneous voltage | 250 V |
| Maximum differential input voltage | 75 V |
| Operating temperature range | 20 °C ± 3 K (68 °F ± 5.5 °F) |
| Relative humidity range | 45 % to 55 % RH |
| Power supply | 9 V to 11.2 V |
| Input signal frequency range | 0 Hz to 440 Hz |
| Input impedance | 1.2 MΩ |
Charge the internal battery only with the power adapter that is supplied with the instrument.
During passive measurement it means the input voltage exceeds 42 V; during active measurement it indicates the instrument is operating outside its measurement range.
Calibration is recommended at least once a year, or as needed, by contacting the manufacturer or an authorized dealer.