ET 46D

The TAURUS PRECIOHM ET is one of the specially designed products by TAURUS to measure earth resistivity and earth resistance in a power station. These tests are performed based on 4 point (Wenner) and 3 point (fall of potential) methods respectively.

All electrical equipments in the substations and power stations are electrically connected to station earth mat with earth electrodes. The earth electrode ensures that in the event of over voltage or over current on the system due to system fault or lighting discharges etc., the earthing system which are normally ”dead” as far as voltages are concerned; do not attain dangerously high potentials. An earth electrode will only be effective as long as it has a low resistance to the earth and can carry large currents without deteriorating. Thus the resistance of earth electrode should be low to give good protection and it must be continuously measured and monitored in all the substations and power stations.

PRECIOHM ET is a portable system specially designed to measure earth resistance & resistivity for substations and power stations. PRECIOHM ET has a wide measurement range (0 to 20K ohms) and is immune to power frequency interference and its harmonics. The instrument is designed to operate in a highly induced environment and to give highly stable, reliable, repeatable readings in the power station with its strong capability of noise & leakage current/voltage suppression.