Description
The earth resistance measuring device Testboy TV 441 is used to check the resistance between the reference earth and the connection point of the earthing system.
For measurement, an alternating current is injected between an auxiliary earth electrode and the earth electrode to be measured. With a probe located in the area of the reference earth electrode of the earth electrode to be measured, the voltage drop is measured and the earth resistance is determined (three-wire method).
Product benefits:
- Earth resistance up to 4000 ohms
- Ground voltage up to 200V, 50/60 Hz
- Measurement system: constant current, 3mA (800 Hz)
- Measurement value acquisition : max, min, average
- Relative value measurement
- Measurement value memory for up to 100 measurement values
- Auto power-off function after approx. 15 minutes
- Overvoltage category CAT III 300 V
