Earth resistance tester MRU-120 with ERP-1 adapter

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With the use of the presented earth resistance and soil resistivity meter Sonel MRU-120 it is possible to carry out earth resistance measurements using 3-pole and 4-wire method, measurements with the use of additional clamps (multiple earthing - without the necessity of unfastening the monitoring connections), as well as measurements using two-clamp method - in some cases it is possible to carry out the measurement without the necessity of using auxiliary probes driven into the ground. Sonel MRU-120 is a device designed to meet the needs of the power industry and used for earthing measurements - measuring range (measurements in accordance with PN-EN 61557 standard) from 0.30 Ω. The functionality of the device is completed by the possibility to measure the resistivity of soil and the continuity of protective and equalising connections. Compatible with ERP-1 adapter ERP-1 adapter allows user to test earthing systems using flexible clamps. This is particularly useful, e.g. in case of lattice towers – there is no need to switch off the line or disconnect control connectors. Proprietary algorithm allows user to check the current direction in the individual measurements and facilitates damage detections, e.g. corroded steel strip (hoop). Meter MRU-120 and adapter ERP-1 are sold separately. Feel free to ask Sonel personnel for guidance. Earth resistance meter MRU-120 together with ERP-1 adapter and flexible coil allows testing earth resistance of transmission towers.