Showing 1–9 of 10 results
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$714
• Earth resistance measurement • Ground resistivity (Wenners method) • High spurious voltage rejection • Spurious voltage measurement • 0.01 Ω resolution • Up to 20 kΩ resistance range • Measure with multiples frequencies (270 Hz, 570 Hz, 870 Hz, 1170 Hz, 1470 Hz) • Built-in memory • USB interface 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. It is also suitable for soil resistivity measurements, in order to optimize the earth systems project. It is a fully automatic and easy-to-operate equipment. Before starting each measurement, the equipment will check that conditions are within appropriate limits and will notify the operator in case any abnormality turns up (too high interference voltage, too much resistance in test spikes, very low test current, etc). Then, it will look for the most suitable range and show measurement results in an alphanumeric display. In order to conveniently test the earth system, EM4058 allows to perform measurements using the test current which frequency may be operator-selected (270 Hz, 570Hz, 870Hz, 1170Hz or 1470 Hz). On one hand, the lowest frequency will allow to analyze the earth system behavior related to fault currents of industrial frequency, while on the other hand, the measurement performed with the highest frequency will best show the behavior in connection with electrical currents caused by lightning and will offer a very high immunity related to interference voltages that are usually present in soils, specially near substations. The EM4058 has a Frequency Scan feature that performs an earth resistance measure with all available frequencies automatically and calculates, displays and prints the average result besides the individual result of each frequency. Those results are saved on the internal memory. The instrument has four ranges that are automatically selected, covering measurements from 0.01 Ω up to 20 kΩ, which allows to obtain very accurate measurements for any kind of soils. During ground resistivity measurement, the operator may indicate the distance between spikes in order for the equipment to apply Wenners formula and to show the resistivity value directly. The EM4058 has a built-in memory to store measurements and a built-in printer, besides the USB interface that allows to communicate measured values to a computer or data logger for their later analysis and has a remote interface that allows remote control of it through an Android device. It is a portable, strong and lightweight equipment, suitable to be used out in the field and under severe weather conditions. It is powered by a rechargeable battery and it is supplied with all the necessary accessories for measurements (test spikes, leads, etc) within an auxiliary case that makes it simple to carry.
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$2.142
Insulation resistances up to 10 TΩ Automated tests: absorption index, polarization index, capacitance, leakage current and AC/DC voltmeter Step voltage test Remote control through an Android app Auto-range Digital & bargraph reading Chronometer up to 90 minutes Switchable filter to remove external noise interference Real time clock and calendar Built-in printer 4,000 readings memory USB interface Software for data management Rechargeable LFP battery > The digital insulation tester model MD10KVx is TENTECHs cutting edge insulation analyzer equipment and it is one of the most complete and sophisticated available in the international market. A software allows for further analysis of tests results, including features such as graphical representation and automatic report generation. Its proven technology provides safe, reliable and accurate measurements of insulation resistances up to 10 TΩ, with 4 pre-selected test voltages, 500 V 1 kV 5 kV 10 kV. Other test voltages may be selected in steps of 25 V, 100 V or 500 V. A state-of-the-art microprocessor controls the equipment operation and enables the incorporation of advanced features which make measurements easier: auto-range selection, 4000 readings memory, AC/DC voltmeter, automatic measurement of absorption index and polarization index, leakage current and capacitance measurement, timer enabling programming of test duration, configurable pass-fail test, step voltage test, real time clock and calendar. Built-in chronometer, indicating elapsed time, in minutes and seconds, since the test started, up to 90 minutes. Measured values are transmitted through the USB interface and are printed in the built-in printer as a registration of the performed test. Furthermore, the measured values are stored in a non-volatile internal memory. Up to 4000 measured values may be stored, to be transferred afterward to a computer running the T-Logger program. This software allows a further analysis of the test results, including a graphical representation and automatic report generation. The real time clock and calendar, and the sequential test number, facilitates the identification of each test, and the organization of a predictive maintenance system by trend analysis. The MD10KVx has a Bluetooth interface that allows remote control of it through a Android device with TENTECHs app. With it you can take the photos of the objects under test and the GPS coordinates of each. It also allows you to record voice comments for each measurement. The MD10KVx is powered by a rechargeable LFP battery. The cabinet is strong and lightweight, easy to carry, impact-resistant and suitable to be used under severe weather conditions. Thus the megohmmeter supplies very reliable and accurate measurements both in laboratory and out in the field.
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$1.389
Insulation resistances up to 5 TΩ Auto-range Guard terminal Digital & bargraph reading Alphanumerical display Programmable timer Automated tests: absorption index and polarization index Step voltage test Programmable pass-fail Real time clock and calendar Built-in printer 4000 readings memory USB interface Rechargeable LFP battery Auto power-off Software for data management > The TENTECH MD5060x is a smart, microprocessor-controlled, 5 kV insulation tester. Besides the conventional measurement of insulation resistances up to 5 TΩ, its features allow to automatically measure both the polarization index and dielectric absorption index, thus significantly simplifying testing of transformers. This insulation tester is a portable, battery-powered equipment. Test voltage may be chosen from 500 V up to 5 kV in 100 V increments. Due to its measurement principle (actual voltage and current readings) the accuracy of resistance measurement is not affected by any test voltage error. Nevertheless, the high-voltage generator is electronically stabilized with a better than 2 % accuracy in open-circuit condition and for any normal operation battery voltage. The built-in chronometer automatically counts the elapsed time since the start of measurement. Measured values are transmitted through the USB interface and are printed in the built-in printer as a registration of the performed test. Furthermore, the measured values are stored in a non-volatile internal memory. Up to 4000 measured values may be stored to be transferred afterward to a computer running the T-Logger program. This software allows a further analysis of the test results, including a graphical representation and automatic report generation. The real time clock and calendar, and the sequential test number facilitates the identification of each test and the organization of a predictive maintenance system by trend analysis. Some other advanced features are useful to run the most sophisticated insulation analysis. Step voltage test, configurable pass / fail test and timed measurements are automatically performed, with a very simple and user-friendly setup. The measurement parameters are stored in the non-volatile memory for an easy configuration. In order to guarantee the operator safety, the cabinet is made of a high breakdown strength plastic. High security output terminals are placed in the furthest and most protected area of the equipment. A light indicator shows high-voltage presence and is switched-off when the capacities (both internal and external) are discharged up to reaching a safe value. The MD5060x is powered by a rechargeable LFP battery and has an automatic charger that may be connected to 100 240 V mains supply (AC Adapter). The cabinet is strong and lightweight, easy to carry, impact-resistant and suitable to be used under severe weather conditions. Thus the megohmmeter supplies very reliable and accurate measurements both in laboratory and out in the field.
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$1.466
Microprocessor controlled Alphanumerical display Resolution down to: 0.1 µΩ Resistance reading up to: 200 Ω Up to 100 A test current Kelvin-type (4 wires) measurement Powered by internal battery (up to 10 A) or mains supply Direct reading (up to 4½ digits) Overheating protection Serial data output (USB) > The MPK102e high current micro-ohmmeter is a portable, microprocessor-controlled instrument, used to accurately measure very low contact resistances of breakers and switches, busbars, transformers winding and engines, etc, with test currents from 1 mA to 100 A. It employs the 4 terminals-method to avoid measurement errors caused by test leads and their contact resistances. Resistances readings are shown in the alphanumeric display with up to 4½ digits-resolution. It allows to measure resistances up to 200 Ω, with a resolution of up to 0.1 µΩ. Using its internal rechargeable battery, measurements with up to 10 A test current may be carried out without connecting the equipment to mains supply. Powered by mains supply, it allows to measure with any test current up to 100 A. Measurement accuracy is guaranteed by an state-of-the-art signals amplification system, offset-free and of high long-term stability. Test current may be adjusted by the operator in every one of the ranges and their values are measured using an analog indicator (bargraph), making it easy to measure resistances with a significant inductive component, as in the case of big transformers windings. The high-current generation system is based on modern technology that allows to significantly decrease both its weight (30.86 lb | 14 kg) and size. The cabinet is made of plastic material highly resistant to impacts and to environmental challenges. Internal thermal sensors in all sensitive components avoid any damaged caused to the instrument due to overheating. This is a strong but lightweight equipment and may be easily carried by one person. It is water-resistant and can be used under severe weather conditions offering an excellent performance working both in the laboratory and out in the field.
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$2.701
Microprocessor controlled Alphanumerical display Resolution down to: 0.1 µΩ Resistance reading up to: 200 Ω Up to 200 A test current Kelvin-type (4 wires) measurement Powered by internal battery (up to 10 A) or mains supply Direct reading (up to 4½ digits) Overheating protection Serial data output (USB) > The MPK204e high current micro-ohmmeter is a portable, microprocessor-controlled instrument, used to accurately measure very low contact resistances of breakers and switches, busbars, transformers winding and engines, etc, with test currents from 1 mA to 200 A. It employs the 4 terminals-method to avoid measurement errors caused by test leads and their contact resistances. Resistances readings are shown in the alphanumeric display with up to 4½ digits-resolution. It allows to measure resistances up to 200 Ω, with a resolution of up to 0.1 µΩ. Using its internal rechargeable battery, measurements with up to 10 A test current may be carried out without connecting the equipment to mains supply. Powered by mains supply, it allows to measure with any test current up to 200 A. Measurement accuracy is guaranteed by an state-of-the-art signals amplification system, offset-free and of high long-term stability. Test current may be adjusted by the operator in every one of the ranges and their values are measured using an analog indicator (bargraph), making it easy to measure resistances with a significant inductive component, as in the case of big transformers windings. The high-current generation system is based on modern technology that allows to significantly decrease both its weight (35.27 lb | 16 kg) and size. The cabinet is made of plastic material highly resistant to impacts and to environmental challenges. Internal thermal sensors in all sensitive components avoid any damaged caused to the instrument due to overheating. This is a strong but lightweight equipment and may be easily carried by one person. It is water-resistant and can be used under severe weather conditions offering an excellent performance working both in the laboratory and out in the field.
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$3.065
Micro-ohmmeter up to 200 A Performs 30 consecutives 1-minute measurements with 1 minute interval between them Alphanumerical display Direct reading (up to 4½ digits) Resolution: 0.1 μΩ Resistance reading: up to 1 Ω U/I (4-wires) measurement Overheating protection Internal memory for up to 50 registers with 80 readings each > The MPK215e is a portable, microprocessor controlled instrument, used to accurately measure very low contact resistances of breakers and switches, busbars, transformers winding and engines, etc, with test currents from 5 A to 200 A. It employs the 4 terminals-method to avoid measurement errors caused by test leads and their contact resistances. Resistances readings are shown in the alphanumeric display with up to 4½ digits-resolution. It allows to measure resistances up to 1 Ω, with a resolution of up to 0.1 μΩ. Measurement accuracy is guaranteed by an state-of-the-art signal amplification system, offset-free and of high long-term stability Test current may be adjusted by the operator in every one of the ranges and their values are measured using an analog indicator (bargraph), making it easy to measure resistances with a significant inductive component, as in the case of big transformers windings. The high-current generation system is based on modern technology that allows to significantly decrease both its weight and size. The cabinet is made of plastic material highly resistant to impacts and to environmental challenges. Internal thermal sensors in all sensitive components avoid any damaged caused to the instrument due to overheating. This is a strong but lightweight equipment and may be easily carried by one person. It is water-resistant and can be used under severe weather conditions offering an excellent performance working both in the laboratory and out in the field.
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$1.381
Microprocessor controlled Alphanumerical display Direct reading (up to 4½ digits) Resolution: 1 μΩ Resistance reading: up to 2000 Ω 0.1 % basic accuracy U/I (4-wires) measurement USB Data output Rechargeable battery Remote control through an Android™ app > The MPK-256 digital very low resistance ohmmeter is a portable, microprocessor-controlled instrument used to accurately measure resistances of switches and circuit breaker contacts, transformer and motor windings, wire and cable samples, joints in busbars, etc., using test currents from 1mA up to 10 A. It uses the Kelvin-type, four-terminals measurement principle, thus eliminating errors caused by lead and contact resistances. Resistance readings are shown in the alphanumeric display with up to a 4½ digit-resolution. It allows to measure resistances of up to 2,000 Ω, with a resolution down to 1 µΩ. Measurements accuracy is guaranteed by the state-of-the-art system for signal amplification, offset-free and with long-term stability.The equipment has a USB interface that allows to download the measured values to a computer for their later analysis. The open circuit output voltage is of up to 10 V, depending on the selected test current, reducing the stabilization time for the test current when highly inductive elements are measured. The measurement circuit has an effective protection against voltage peaks originated by those inductances. Operation is very simple: Just connect the leads, switch-on the equipment, select the test current and press the start button. After a few seconds (depending on inductance of the element), direct reading appears on the display with the measure unit indication (Ω, mΩ or µΩ). If it is necessary, the display will show messages to help the operator (Low battery, Over range, etc). The equipment is housed in a rugged plastic case with a hinged lid and carrying handle. It is a portable, strong, impact resistant and lightweight equipment, suitable to be used in field, under severe weather conditions. It supplies very reliable and accurate measurements both in laboratory and out in the field.
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$2.099
Microprocessor controlled Alphanumerical display Direct reading (up to 4½ digits) Resolution: 0.1 μΩ Resistance reading: up to 2000 Ω 0.1 % basic accuracy U/I (4-wires) measurement USB Data output Rechargeable battery > The MPK-257 digital very low resistance ohmmeter is a portable, microprocessor-controlled instrument used to accurately measure resistances of switches and circuit breaker contacts, transformer and motor windings, wire and cable samples, joints in busbars, etc., using test currents from 1mA up to 10 A. It uses the Kelvin-type, four-terminals measurement principle, thus eliminating errors caused by lead and contact resistances. Resistance readings are shown in the alphanumeric display with up to a 4½ digit-resolution. It allows to measure resistances of up to 2,000 Ω, with a resolution down to 0.1 µΩ. Measurements accuracy is guaranteed by the state-of-the-art system for signal amplification, offset-free and with long-term stability.The equipment has a USB interface that allows to download the measured values to a computer for their later analysis. The open circuit output voltage is of up to 10 V, depending on the selected test current, reducing the stabilization time for the test current when highly inductive elements are measured. The measurement circuit has an effective protection against voltage peaks originated by those inductances. Operation is very simple: Just connect the leads, switch-on the equipment, select the test current and press the start button. After a few seconds (depending on inductance of the element), direct reading appears on the display with the measure unit indication (Ω, mΩ or µΩ). If it is necessary, the display will show messages to help the operator (Low battery, Over range, etc). The equipment is housed in a rugged plastic case with a hinged lid and carrying handle. It is a portable, strong, impact resistant and lightweight equipment, suitable to be used in field, under severe weather conditions. It supplies very reliable and accurate measurements both in laboratory and out in the field.
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$475
• 3½ digits display • Earth resistance measurement • Spurious voltage measurement • Resolution: 0.01 Ω • Resistance reading: up to 20 kΩ • Audible signal indicates anomalies in the current circuit 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. Its state-of-the-art system of active and passive filters provides it with high immunity to electric interferences, making it possible to obtain reliable measurements even in the presence of spurious voltages, such as the ones that can be found in some urban areas and near primary substations.
