Clamp-on ground resistance meter EM5254
The Ground Resistance Tester model EM-5254 measure ground rod and small grid resistance through any season, without the use of auxiliary ground rods. Clamp-on ground resistance testers are used in multigrounded systems without disconnecting the ground under test. The EM-5254 simply clamp around the ground conductor or rod and measure the resistance to ground.
Features:
- Simple and fast clamp-on operation.
- No auxiliary roads required.
- Direct readind of ground loop resistance from 0.01 Ω to 1,500 Ω.
- Direct reading of small leakage current from 1 mA.
- Direct reading of neutral current up to 40 A.
- Displays stored measurements on the OLED display or via Bluetooth® (Class 2 – communicates up to 30 ft) to a Android™ based mobile application.
Digital earth tester MTD20KWe
The MTD-20KWe digital earth tester allows for the measurement of Earth Resistances and Soil Specific Resistivity, and also the spurious voltages caused by parasitic voltages present in the soil.
This equipment is suitable for fast and easy measurement of the grounding resistance in house and industrial buildings, hospital installations, lightning rods, antennas, substations, etc. Soil resistivity measurement allows for soil stratification in order to optimize the most complex grounding systems engineering.
Features:
- 3½ digits display.
- Earth Resistance measurement.
- Spurious voltage measurement.
- Resistance reading: up to 20 kΩ.
- Audible signal indicates anomalies in the current circuit.
Smart Earth Resistance Tester EM4058
The EM4058 earth tester is a digital, microprocessor controlled instrument that allows to measure the earth resistance and ground resistivity (using Wenner´s method), as well as to detect parasitic voltages present in the ground. This instrument is suitable to measure earth systems in power substations, industries, distribution networks, etc., according to IEC 61557-5.
Features:
- Earth resistance measurement.
- Ground resistivity (Wenner’s method).
- High spurious voltage rejection.
- Measure with multiples frequencies (270 Hz, 570 Hz, 870 Hz, 1170 Hz, 1470 Hz).
- 0.01 Ω resolution.
- Up to 20 kΩ resistance range.
High frequency earth ground tester TM25 R
Testing of the power transmission towers grounding (G) quality poses a serious problem as they are all electrically interconnected by means of Ground Wires which act as lightning rods, protecting the lines from atmospheric discharges.
Due to the existence of this connection, any attempt to measure a tower grounding (G) resistance using a conventional earth meter leads to wrong results as what is really being measured is all the shunt towers grounding (G) resistance (or, more precisely, its impedance at low frequency). Trying to disconnect the ground wire from an energized line is a risky operation due to the need for climbing to the tower highest part as well as for the proximity to the high-voltage conductors.
Features:
- Intended for measurement of earth resistance of electricity pylons.
- Minimizes the influence of adjacent pylons, connected by the guard cable.
- Operation frequency: 25 kHz.
- Automatic current injection.
- Resistance reading: up to 300 Ω.
