TENTECH https://tentech.com/ en MD15KVR - 15 kV digital insulation tester https://tentech.com/en/products/insulation-testers/MD15KVR <span property="schema:name">MD15KVR - 15 kV digital insulation tester</span> <span rel="schema:author"><span lang="" about="/index.php/user/1" typeof="schema:Person" property="schema:name" datatype="">admin</span></span> <span property="schema:dateCreated" content="2017-10-24T15:33:53+00:00">Tue, 10/24/2017 - 15:33</span> <div property="schema:text"><h1>Description</h1> <p>The digital insulation tester model <strong>MD15KVR</strong> is TENTECH’s 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 15 TΩ, with 4 preselected test voltages, 500 V - 5 kV - 10 kV - 15 kV. Other test voltages may be selected in steps of 25 V or 500 V.<br /> <br /> A state-of-the-art microprocessor controls the equipment operation and enables the incorporation of advanced features which make measurements easier: auto-range selection, AC/DC voltmeter, automatic measurement of absorption index, polarization index, leakage current and capacitance, timer enabling programming of test duration, configurable pass-fail test, ramp test, step voltage test, dielectric discharge, built-in printer, real time clock and calendar.<br /> <br /> 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 16,000 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.<br /> <br /> The <strong>MD15KVR</strong> 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.</p> <h1>Specifications</h1> <div class="spec_col"> <p>Test voltage</p> <p>500 V, 5 kV, 10 kV, 15 kV directly, one button selectable.<br /> 500 V to 15 kV in 25 V or 500 V steps. DC, negative.</p> <p>Maximum resistance reading</p> <p>15 TΩ @ 10 kV up to 15 kV.<br /> 10 TΩ @ 5 kV up to 9.99 kV.<br /> 5 TΩ @ 1 kV up to 4.99 kV.<br /> 1 TΩ @ 525 V up to 999 V.<br /> 500 GΩ @ 500 V.</p> <p>DC voltmeter</p> <p>15 V up to 1,000 Vdc.<br /> Accuracy: ±(5 % of reading + 3 digits).</p> <p>AC voltmeter</p> <p>15 V up to 1,000 Vrms.<br /> Accuracy: ±(5 % of reading + 3 digits).</p> <p>Overvoltage category</p> <p>CAT III - 600 V.</p> <p>Leakage current measurement</p> <p>1 nA up to 1,500 μA<br /> Accuracy: ±(10 % of reading + 3 digits).</p> <p>Capacitance measurement</p> <p>50 nF up to 10 µF @ 500 V.<br /> 50 nF up to 5 µF @ 1,000 V.<br /> 30 nF up to 2 µF @ 2,500 V.<br /> 30 nF up to 1 µF @ 5,000 V.<br /> 30 nF up to 680 nF @ 10,000 V.<br /> 30 nF up to 680 nF @ 15,000 V.<br /> Accuracy: ±10 % of reading ± 3 digits.</p> <p>Short circuit current</p> <p>Max. 2 mA.</p> <p>Test voltage accuracy</p> <p>± 3 % of nominal test voltages on 10 GΩ.</p> <p>Insulation tester basic accuracy</p> <p>± 5 % of reading 1 MΩ to 1 TΩ @ 15 kV.<br /> ± 20 % of reading 1 TΩ to 15 TΩ @ 15 kV.<br /> (for lower test voltages, the upper limit will be reduced proportionally).<br /> ± 20 % of reading ± 5 digits 10 kΩ to 100 kΩ.<br /> ± 10 % of reading ± 5 digits 100 kΩ to 1 MΩ.</p> <p>Advanced features</p> <p>• Dielectric discharge<br /> • Ramp test<br /> • Automated polarization index calculation<br /> • Automated dielectric absorption ratio calculation<br /> • Programmable pass-fail test<br /> • Step voltage test<br /> • 16,000 readings memory<br /> • Switchable filter to remove external noise interference</p> </div> <div class="spec_col"> <p>Built-in printer</p> <p>Prints elapsed time, actual voltage and resistance measured each 15 seconds.</p> <p>Interface</p> <p>USB.</p> <p>Built-in chronometer</p> <p>Shows elapsed time in mm:ss format. Count starts automatically for each measurement.</p> <p>T-Logger Software</p> <p>Friendly, easy to use software. Tests are represented in graphic and tabular views. With automatic report generator, including the operator's commentaries.</p> <p>Environmental protection</p> <p>IP65 (with closed lid).</p> <p>Safety Class</p> <p>In accordance with IEC 61010-1.</p> <p>E.M.C.</p> <p>In accordance with IEC 61326-1.</p> <p>Electromagnetic irradiation immunity</p> <p>In accordance with IEC 61000-4-3.</p> <p>Electrostatic immunity</p> <p>In accordance with IEC 61000-4-2.</p> <p>Power supply</p> <p>Internal rechargeable (LiFePO4 12 V - 6,000 mAh).</p> <p>Battery charger</p> <p>12 V - 2 A.</p> <p>Operating temperature range</p> <p>23 °F to 122 °F (-5 °C to 50 °C).</p> <p>Storage temperature range</p> <p>-13 °F to 158 °F (-25 °C to 70 °C).</p> <p>Humidity range</p> <p>95% UR (non condensing).</p> <p>Equipment weight</p> <p>Approx. 13.88 lb (6.3 kg).</p> <p>Dimension</p> <p>17.5" x 14.2" x 7.5" (450 x 360 x 190 mm).</p> </div> </div> Tue, 24 Oct 2017 15:33:53 +0000 admin 20 at https://tentech.com MPK105R - 100 A high current micro-ohmmeter https://tentech.com/en/products/micro-ohmmeters/MPK105R <span property="schema:name">MPK105R - 100 A high current micro-ohmmeter</span> <span rel="schema:author"><span lang="" about="/index.php/user/14" typeof="schema:Person" property="schema:name" datatype="">felipe</span></span> <span property="schema:dateCreated" content="2021-06-07T18:11:30+00:00">Mon, 06/07/2021 - 18:11</span> <div property="schema:text"><h1>Description</h1> <p>The MPK105R high-current micro-ohmmeter is a portable, microprocessor-controlled instrument. Has optimized filters and protections for measurements in electrical substations. Can be used to accurately measure very low contact resistances of high voltage circuit-breakers and switches, busbars, etc., with test currents from 5 A up to 100 A. It employs the 4 terminals-method (U/I measuring principle) to avoid errors caused by test leads and their contact resistances.<br /> <br /> Measurement accuracy is guaranteed by a state-of-the-arts signal amplification system, offset-free and of high long-term stability. Resistances readings are shown in the alphanumeric display with up to 4½ digits-resolution. It allows to measure resistances up to 300 mΩ, and the best resolution is 0.1 µΩ.<br /> <br /> The high-current generation system is based on modern technology that allows to significantly decrease both its weight (approx. 11 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 damage caused to the instrument due to overheating.<br /> <br /> 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 (IP54 with closed lid) offering an excellent performance working both in the laboratory and out in the field.</p> <h1>Technical specifications</h1> <div class="spec_col"> <p>Test current</p> <p>From 5 A up to 100 A (True DC)<br /> The test current can be adjusted in steps of 0.2 A from 5 A to 20 A and steps of 1 A from 20 A to 100 A.</p> <p>Resistance ranges</p> <p>0.1 μΩ up to 2 mΩ (0.1 μΩ resolution)<br /> 2 mΩ up to 300 mΩ (10 μΩ resolution).</p> <p>Measurement principle</p> <p>Four-terminal, U/I.</p> <p>Protections</p> <p>Protections against overheating, overcurrent and short-circuit.</p> <p>Programmable test time</p> <p>Allows to setup the test duration from 15 seconds up to 120 seconds for current test from 5 A up to 100 A</p> <p>Basic accuracy</p> <p>± 1 % of reading from 50 μΩ to 300 mΩ.</p> <p>Auxiliary clamp measurement range</p> <p>0.1 ADC to 60 ADC.</p> <p>Auxiliary clamp reading accuracy</p> <p>1 % + 3 digits.</p> <p>Advanced features</p> <p>Digital direct reading of very low resistances in the alphanumerical display, with up to 4½ digits. Very fast and accurate measurements.</p> </div> <div class="spec_col"> <p>Communication protocol</p> <p>Modbus.</p> <p>Built-in memory</p> <p>Memory for storing up to 4000 readings organized by records.</p> <p>Serial data output</p> <p>USB, for configuration, control and download the stored values.</p> <p>Bluetooth</p> <p>For configuration and control.</p> <p>Environmental protection</p> <p>IP54 (with closed lid).</p> <p>Safety</p> <p>In accordance with IEC 61010-1.</p> <p>Power supply</p> <p>Mains: 100-240 V~.</p> <p>Operating temperature</p> <p>32 °F to 122 °F (0 °C to 50 °C).</p> <p>Storage temperature</p> <p>14 °F to 158 °F (-10°C to 70°C).</p> <p>Humidity range</p> <p>95% RH (non condensing).</p> <p>Equipment weight</p> <p>approx. 24.25 lb (11 kg).</p> <p>Dimensions</p> <p>19.76" x 15.51" x 7.48" (502 x 394 x 190 mm).</p> </div> </div> Mon, 07 Jun 2021 18:11:30 +0000 felipe 58 at https://tentech.com MPK257 - 10 A low current micro-ohmmeter https://tentech.com/en/products/micro-ohmmeters/MPK257 <span property="schema:name">MPK257 - 10 A low current micro-ohmmeter</span> <span rel="schema:author"><span lang="" about="/index.php/user/14" typeof="schema:Person" property="schema:name" datatype="">felipe</span></span> <span property="schema:dateCreated" content="2018-04-21T15:05:08+00:00">Sat, 04/21/2018 - 15:05</span> <div property="schema:text"><h1>Description</h1> <p>The <strong>MPK-257</strong> 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.<br /> <br /> It uses the Kelvin-type, four-terminals measurement principle, thus eliminating errors caused by lead and contact resistances.<br /> <br /> 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.<br /> <br /> 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.<br /> <br /> 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.<br /> <br /> The measurement circuit has an effective protection against voltage peaks originated by those inductances.<br /> <br /> 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).<br /> <br /> 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.</p> <h1>Technical specifications</h1> <div class="spec_col"> <p>Test currents</p> <p>1 mA - 10 mA - 100 mA - 1 A - 5 A - 10 A.<br /> Each current may be continuously adjustable from 0 to 100 %.</p> <p>Resistance ranges</p> <p>0-200 mΩ @ 10 A.<br /> 0-1000 mΩ @ 5 A.<br /> 0-200 mΩ @ 1 A.<br /> 0-2000 mΩ @ 100 mA.<br /> 0-20 Ω @ 10 mA.<br /> 0-2000 Ω @ 1 mA.</p> <p>Resolution</p> <p>0.1 μΩ @ 10 A.</p> <p>Output voltage</p> <p>Up to 10 V<sub>DC</sub> (open circuit) @ 1 A.</p> <p>Measurement principle</p> <p>Four-terminal, Kelvin-type.</p> <p>Basic accuracy</p> <p>±(0.10% of reading + 3 ULSD*).<br /> *Units of the Least Significant Digit</p> <p>Advanced features</p> <p>Digital direct reading of very low resistances in the alphanumerical display, with up to 4½ digits Very fast and accurate measurements.</p> <p>Serial data output</p> <p>USB.</p> </div> <div class="spec_col"> <p>Environmental protection</p> <p>IP65 (with closed lid).</p> <p>Safety class</p> <p>Meets the requirements of IEC 61010-1.</p> <p>Power supply</p> <p>Rechargeable LFP battery 12 V, 6000 mAh or 100 - 240 V~ mains supply.</p> <p>Built-in battery charger</p> <p>For 100 - 240 V~ mains supply or auxiliary 12 V supply input.</p> <p>Operating temperature range</p> <p>23 °F to 122 °F (-5 °C to 50 °C).</p> <p>Storage temperature range</p> <p>-13 °F to 158 °F (-25 °C to 70 °C).</p> <p>Humidity range</p> <p>95 % RH (non condensing).</p> <p>Equipment weight</p> <p>Approx. 14.33 lb (6.5 kg).</p> <p>Dimensions</p> <p>14.88" x 12.13" x 6.89" (378 x 308 x 175 mm).</p> </div> </div> Sat, 21 Apr 2018 15:05:08 +0000 felipe 51 at https://tentech.com TM25R - High frequency earth ground tester https://tentech.com/en/products/earth-ground-testers/TM25R <span property="schema:name">TM25R - High frequency earth ground tester</span> <span rel="schema:author"><span lang="" about="/index.php/user/14" typeof="schema:Person" property="schema:name" datatype="">felipe</span></span> <span property="schema:dateCreated" content="2017-11-15T15:09:16+00:00">Wed, 11/15/2017 - 15:09</span> <div property="schema:text"><h1>Description</h1> <p>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.<br /> <br /> 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.<br /> <br /> To make this kind of test feasible, which is of vital importance to ensure the transmission of the electrical power without interruptions, TENTECH TM25R grounding resistance meter for high frequency has been developed. This is the appropriate tool for a fast, safe and reliable grounding resistance measurement in each tower of a working line transmission, without disconnecting the ground wire.<br /> <br /> Its operation is based on the use of a high-frequency measurement current (25 kHz), for which ground wire inductive impedance - taking into account a typical length span is reasonably high, making it possible to reduce the effect of the adjacent towers under measurement. The equipment only measures the ground resistance of the surveyed tower, including its base. The extensive G systems, such as meshes, buried wires, metal pipes, etc, are measured only considering the closest section to the connection point, so that the measured value represents the performance, against a pulse signal similar to an atmospheric discharge.<br /> <br /> Thus, values that better represent the system capacity to ground lightning currents than the ones obtained with low frequency conventional equipment, even when disconnecting the ground wire, are obtained.<br /> <br /> The test is performed by making the known-value current flow through the earth diffusion resistance and an auxiliary electrode, called the current electrode, and by measuring the voltage produced between grounding and another auxiliary electrode, thrust into the ground in the area of the potential created by flowing current (Potential Plateau).<br /> <br /> The current injected by the earth meter is automatically adjusted to the predetermined value and the equipment and it directly indicates the resistance value on its ohms-grades scale.<br /> <br /> The TM25R has a Bluetooth interface that allows remote control of it through a tablet with TENTECH's app. With it you can save the photos of the towers and the GPS coordinates of each. It also allows you to record voice comments for each measurement. This equipment is poewred with its universal charger, from a built-in rechargeable battery. It is a strong equipment, easy to carry, resistant to the hard weather and geographical features of the tropical and high-mountain regions, that is why it is described as an excellent product for field works under the most severe environmental conditions.</p> <h1>Technical specifications</h1> <div class="spec_col"> <p>Measurement ranges</p> <p>0 - 300 Ω.</p> <p>Operation frequency</p> <p>25,000 Hz.</p> <p>Test current</p> <p>20 mA automatic.</p> <p>Inductive Component compensation</p> <p>Through bank of capacitors integrated to the equipment.<br /> Maximum capacity: 4.2 µF.<br /> Resolution: 10 nF.</p> <p>Measurement accuracy</p> <p>± 2.5 % of reading ± 1 digit.</p> <p>Display</p> <p>Alphanumeric display (LCD).</p> <p>Max. earth resistance of auxiliary rods</p> <p>2,000 Ω (current rod).<br /> 2,000 Ω (voltage rod).</p> <p>Built-in memory</p> <p>It allows for the storage of 2,000 tests readings in its internal NVRAM memory.</p> <p>Interfaces</p> <p>USB and Bluetooth.</p> </div> <div class="spec_col"> <p>App</p> <p>Software for remote control via an Android device.</p> <p>Power supply</p> <p>Internal or external rechargeable battery, 12 V. Internal battery autonomy: at least 2 hours</p> <p>Battery charger</p> <p>For 100 - 240 V~ 50/60 Hz.</p> <p>Operation temperature</p> <p>23 °F to 122 °F (-5 °C to 50 °C).</p> <p>Storage temperature</p> <p>5 °F to 158 °F (-15 °C to 70 °C).</p> <p>Humidity</p> <p>95 % HR (without condensation).</p> <p>Equipment weight</p> <p>Approx. 10.80 lb (4.9 kg).</p> <p>Dimension</p> <p>13.39" x 11.62" x 5.98" (340 x 295 x 152 mm).</p> </div> </div> Wed, 15 Nov 2017 15:09:16 +0000 felipe 45 at https://tentech.com MD1000R - 1 kV handheld insulation tester https://tentech.com/en/products/insulation-testers/MD1000R <span property="schema:name">MD1000R - 1 kV handheld insulation tester</span> <span rel="schema:author"><span lang="" about="/index.php/user/1" typeof="schema:Person" property="schema:name" datatype="">admin</span></span> <span property="schema:dateCreated" content="2017-10-29T10:24:55+00:00">Sun, 10/29/2017 - 10:24</span> <div property="schema:text"><h1>Description</h1> <p>The TENTECH <strong>MD1000R</strong> is a smart, microprocessor controlled, 1 kV insulation tester for up to 200 GΩ resistance measuring with 250 V, 500 V and 1000 V test voltage. It is a portable, hand-held, battery powered equipment. Due to its measurement principle (actual voltage and current readings) it is a "true megohmmeter" and so the accuracy of resistance measurement is not affected by any test voltage error.<br /> <br /> Operation is very simple and user-friendly: just connect the leads, switch-on the equipment, select the test voltage and press the Test button. Then the equipment automatically selects the most suitable range and shows the measured value in the 3½ digits display.<br /> <br /> In order to guarantee the operator safety there are no accessible metallic parts. 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.<br /> <br /> Furthermore, it offers useful additional features: 200 mA continuity range, low resistance measurement, AC/DC voltage measurement up to 600 V, selectable timer, hold memory, and selectable resistance limits for pass-fail testing, with acoustic indication.<br /> <br /> Surface leakage paths may affect the measurement of high value insulation resistance. The use of the GUARD terminal permits to remove the effect of this current, substantially improving the test result.<br /> <br /> Due to its reduced dimensions and weight, power supply autonomy and mechanical resistance, this equipment is suitable for fieldwork.</p> <h1>Specifications</h1> <div class="spec_col"> <p>Nominal test voltages</p> <p>250 V - 500 V - 1000 V.<br /> Negative, DC voltage.</p> <p>Resistance measurement range</p> <p>From 10 kΩ up to 200 GΩ.</p> <p>Short circuit current</p> <p>1.5 ± 0.3 mA.</p> <p>Test voltage accuracy</p> <p>-0 / +15 % for resistances between 10 MΩ and open circuit.</p> <p>Basic accuracy</p> <p>R ≤ 50 GΩ: ± 5 % of reading ± 2 digits.<br /> R &gt; 50 GΩ: ± 10 % of reading ± 2 digits.</p> <p>Low resistance measurement and continuity tester</p> <p>Range: 0.05 Ω to 150 Ω.<br /> Accuracy: ± 5 % of reading ± 2 digits.<br /> Test current: up to 200 mA.<br /> Continuity indicator: Activates at R &lt; 5 Ω ± 0.5 Ω.</p> <p>Built-in timer</p> <p>5 - 10 - 15 - 30 seconds.<br /> 1 - 2 - 3 - 5 - 10 - 15 minutes.</p> <p>Pass / fail test</p> <p>1 - 2 - 5 - 10 - 20 - 50 - 100 - 200 - 500 MΩ.<br /> 1 - 2 - 5 - 10 - 20 - 50 - 100 GΩ.</p> <p>Voltmeter True RMS.</p> <p>Range: 0 - 600 V<sub>AC/DC</sub>.<br /> Accuracy: ± 3 % of reading ± 2 digits.</p> <p>Additional features</p> <p>• Automatic polarization index.<br /> • Guard terminal.<br /> • Hold function.</p> </div> <div class="spec_col"> <p>Overvoltage protection </p> <p>600 V.</p> <p>Safety class</p> <p>In accordance with IEC 61010-1.</p> <p>E.M.C.</p> <p>In accordance with IEC 61326-1.</p> <p>Electrostatic immunity</p> <p>In accordance with IEC 61000-4-2.</p> <p>Electromagnetic irradiation immunity</p> <p>In accordance with IEC 61000-4-3.</p> <p>Power supply</p> <p>Built-in, NiMH battery.<br /> Autonomy: 1000 tests of 5 seconds with an interval of 25 seconds according IEC 61557-2. During the measurement is used a test resistance which the value is UN x (1000 Ω / V).</p> <p>Battery charger</p> <p>Built-in, with external power supply of 12 V - 2 A.</p> <p>Operation temperature</p> <p>23 °F to 122 °F (-5 °C to 50 °C).</p> <p>Storage temperature</p> <p>14 °F to 158 °F (-10 °C to 70 °C).</p> <p>Humidity</p> <p>95 % RH (without condensation).</p> <p>Equipment weight</p> <p>Approx. 1.1 lb (0.5 kg).</p> <p>Dimensions</p> <p>4.01" x 7.68" x 1.81" (102 x 195 x 46 mm).</p> </div> </div> Sun, 29 Oct 2017 10:24:55 +0000 admin 24 at https://tentech.com MD5060x - 5 kV digital insulation tester https://tentech.com/en/products/insulation-testers/MD5060x <span property="schema:name">MD5060x - 5 kV digital insulation tester</span> <span rel="schema:author"><span lang="" about="/index.php/user/1" typeof="schema:Person" property="schema:name" datatype="">admin</span></span> <span property="schema:dateCreated" content="2017-10-28T14:16:20+00:00">Sat, 10/28/2017 - 14:16</span> <div property="schema:text"><h1>Description</h1> <p>The TENTECH <strong>MD5060x</strong> 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.<br /> <br /> 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.<br /> <br /> 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.<br /> <br /> 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.<br /> <br /> 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.<br /> <br /> The <strong>MD5060x</strong> 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.</p> <h1>Specifications</h1> <div class="spec_col"> <p>Test voltages</p> <p>500, 1000, 2500, 5000 V directly, one button selectable.<br /> 500 V to 5 kV in 100 V increments. DC, negative.</p> <p>Maximum resistance reading</p> <p>5 TΩ @ 5 kV. </p> <p>Short circuit current</p> <p>1.5 ± 0.5 mA. </p> <p>Test voltages accuracy</p> <p>± 3 % of nominal test voltages on R ≥ 10 GΩ.</p> <p>Insulation tester basic accuracy</p> <p>± 5 % of reading from 1 MΩ up to 1 TΩ.<br /> ± 20 % of reading from 1 TΩ up to 5 TΩ.</p> <p>Advanced features</p> <p>Automated polarization index calculation.<br /> Automated dielectric absorption ratio calculation.<br /> Step voltage test.<br /> Programmable pass / fail test.</p> <p>Built-in printer</p> <p>Prints elapsed time, actual voltage and resistance measured each 15 seconds.</p> <p>Built-in memory</p> <p>Stores up to 4000 measured values.</p> <p>Interface</p> <p>USB.</p> <p>Built-in chronometer</p> <p>Shows elapsed time in mm:ss format. Count starts automatically for each measurement.</p> <p>Real time clock and calendar</p> <p>Allows a reliable identification for each test.</p> </div> <div class="spec_col"> <p>T-Logger software</p> <p>Friendly, easy to use software. Tests are represented in graphical and tabular views. With automatic report generator, including the operator's commentaries.</p> <p>Environmental protection</p> <p>IP54 (with closed lid).</p> <p>Safety class</p> <p>In accordance with IEC 61010-1.</p> <p>E.M.C.</p> <p>In accordance with IEC 61326-1.</p> <p>Electrostatic immunity</p> <p>In accordance with IEC 61000-4-2.</p> <p>Electromagnetic irradiation immunity</p> <p>In accordance with IEC 61000-4-3.</p> <p>Power supply</p> <p>Internal rechargeable LFP 12 V - 3000 mAh battery.</p> <p>Battery charger</p> <p>12 V - 2 A.</p> <p>Operating temperature range</p> <p>23 °F to 122 °F (-5 °C to 50 °C).</p> <p>Storage temperature range</p> <p>-13 °F to 158 °F (-25 °C to 70 °C).</p> <p>Humidity range</p> <p>95 % RH (non condensing).</p> <p>Equipment weight</p> <p>Approx. 7.94 lb (3.6 kg).</p> <p>Dimensions</p> <p>10.78" x 9.84" x 4.88" (274 x 250 x 124 mm).</p> </div> </div> Sat, 28 Oct 2017 14:16:20 +0000 admin 21 at https://tentech.com