Showing results: 46 - 60 of 99 items found.
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R1L-C -
TEGAM Inc.
The Model R1L-C is a Ground Resistance Ohmmeter designed to measure grounding system resistance as well as soil resistivity, over ranges from 2 to 20 k full scale. These resistance measurements correspond to soil resistivity from as low as 2 -cm to as high as 600,000 -cm. The R1L-C is capable of Wenner, Fall of Potential, 62% methods as well as bond and continuity measurements. Two, three and four are standard for this instrument.
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AMPTEC RESEARCH
bonding ohmmeter is an affordable, highly accurate, and intrinsically safe electrical bond tester. This meter is capable of performing bond measurements on a variety of components and metal-to-metal connections. The 620LK has been independently UL-913 certified, ensuring quality and safety at each step of manufacturing. Due to its safety certifications and high level of accuracy, the 620LK meter is the choice bond tester for many commercial airliners, while its sibling the 620UK-B is in countless USAF programs.
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PP401 -
Matco Tools
*Electronic circuit and component tester that supplies battery ground and power along with 8 diagnostic testing modes to provide automotive technicians with detailed information on the circuits and signals being tested*Diagnostic Modes include: AC/DC Voltmeter, Ohmmeter, Frequency, Pulse width (Positive and Negative) Fuel Injector Tester, PCM/ECM Driver Tester and PPECT3000 Signal tracer*Tests for AC/DC voltage in 100ms and 50s resolutions, AC volts RMS and volts peak-to-peak, measure resistance, frequency and pulse width (negative and positive)
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MO-2Ke -
MEGABRAS srl
The MO-2Ke digital low resistance ohmmeter is a portable, microprocessor-controlled instrument used to accurately measure resistances of contacts, switches, transformer and motor windings, etc., using test currents from 1 mA up to 1 A.It uses the Kelvin-type (4-terminals) measurement principle, thus eliminating errors caused by lead and contact resistances.Resistance readings are shown in the alphanumeric display with up to a 4 digit-resolution. It allows to measure resistances of up to 2 kO, with resolution of 0.01 mO.Measurements accuracy is guaranteed by the state-of-the-art system for signal-amplification, offset-free and with long-term stability.
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RMO-TW Series -
IBEKO Power AB
RMO-TW series is perfect for winding resistance measurements of inductive objects. It is ideal for testing transformer windings (power transformers, distribution, autotransformers) and for on-load tap changer verification. In addition, any RMO-TW transformer ohmmeter & tap changer analyzer can also perform transformer demagnetization.The series contains 4 models, with maximal test currents from 10 A (RMO10TW) to 50 A (RMO50TW). They are fitted in a portable and lightweight metal housing.All transformer ohmmeters from RMO-TW series generate a true DC ripple-free current with automatically regulated measurement and discharging circuit. The injection of current and discharge of energy from the test object are automatically regulated.Three independent channels enable testing of three windings in series. Consequently, this enables measurements of winding resistance in every tap position of an on-load tap changer without discharging between the tests.DV-Win software enables control and observation of the test process, as well as saving and analyzing the results on a PC. It provides a test report, arranged in a selectable form as an Excel spreadsheet, PDF, Word, or ASCII format. Additionally, DV-Win measures and calculates the OLTC transition time, the ripple and the winding resistance for each tap changing operation. The software can also perform the calculations necessary for the “Heat Run” test. Finally, a user can export all results in the form of a report.
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RMO TT Series -
Amperis sl
The Tap Changer Analyzer & Winding Ohmmeter of the RMO-TT series is designed for winding resistance measurement of inductive objects, and for a tap changer analysis. The RMO-TT series is based on the state of the art technology, using the most advanced switch mode technology available today. The RMO-TT instruments are accurate (0,1%), powerful (up to 100 A) and still portable. The Instruments generate a true DC ripple free current with automatically regulated measurement and discharging circuit. RMO-TT instruments can perform a simple, quick and reliable transformer on-load tap changer condition assessment. This series of instruments enable measurements of a winding resistance in every tap position, current ripple values (percentage of a current drop during a tap change) and transition times during the tap changes. Problems with a connection, contacts, and selector/diverter switch operation (tap change with interruption) can be detected with these measurements.
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MS013 COM -
MSG Equipment
Tester for diagnostics of voltage regulators. The device simulates control signals for a tested voltage regulator. It contains integrated physical and program interfaces of all actually existing control modes of modern alternators. Adapter is controlled by clock encoder with button to install and change parameters. Installation and parameter data appear on LCD display. The handset tester possesses the opportunity to change existing and implement new functions and interfaces in the software. Update download is carried out through USB port. Built-in power supply gives an opportunity to use the device as high-precision ohmmeter or generation of arbitrary PWM signals. Diagnostics lasts about 2 minutes.
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IBEKO Power AB
Winding ohmmeters RMO-M series measure winding resistance of inductive test objects such as electrical motors and generators. Motor test or generator test of winding resistance is especially important for early-stage failure detection.RMO-M series instruments generate true DC ripple-free current with automatically regulated measurement and discharge process. Even more, test instruments are portable and enclosed in a metal casing.Applications supported by DV Power motor/generator test equipment include:Winding resistance measurement of generators and electrical motorsResistance measurement of high-current bus bar jointsResistance measurement of cable splicesAll of the above-mentioned measurements are performed with the highest accuracy. The advanced DV-Win PC software enables collecting both numerical and graphical results. These features provide an easier and more efficient analysis. After the test, a DV-Win software generates a test report a single click. Finally, a user can easily customize the report and save it in different formats, such as XLS and PDF.
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KM-CFPL-620 /620B -
Kusam Electrical Industries Limited
“KUSAM-MECO” underground Cable Fault Pre-locator is an automatic Cable Fault Locator which adopts ARM, FPGA & Dot Matrix Color LCD display Technology. This tester combines both pulse reflecting technology (TDR) & (intelligent Bridge testing (Bridge) (Model-KM-CFPL-620B) for measuring the exact fault location such as broken line, cross faults, earthing, (poor insulation & poor contact of the lead covered cables as well as plastic cables. (Model-KM-CFPL-620B)).It is a microprocessor based fault locator with a user friendly menu. It is easy to operate. It tests almost all telecom & signal cables. It has an English menu which is easy to understand & use. With Megameter & Ohmmeter it enables to test insulation resistance & loop resistance. It has USB Port for uploading test data to computer
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TWA Advanced Series -
IBEKO Power AB
TWA Advanced series is the latest DV Power solution for three-phase transformer winding resistance measurement and tap changer analysis. They are capable of testing six transformer windings with a single cable connection, as well as three-phase automatic transformer demagnetization. It has the option of the automated test mode, where the instrument operates the tap changer without operator input (minimizing the risk of human error) and records winding resistance results based on pre-selected stabilization criteria.The unique DVtest method of tap changer analysis enables checking the moving contacts of on-load tap changers during the transition, measuring the transition time, detecting open circuits, and many other types of faults. It is performed with 0.1 ms sampling rate, together with the measurement of tap changer motor current which detects motor and mechanical issues. A special proprietary algorithm is used for testing tap changers connected through a built-in series (booster) transformer. The DVtest can be performed either on one phase or simultaneously on three phases. It can also be performed together with the winding resistance test in all tap positions.A unique advantage of TWA Advanced instruments is the capability of simultaneously testing the winding resistance of all three phases of a three-phase transformer connected in a YN configuration. This can significantly speed up the testing– for example, it enables the operator to perform 33 measurements instead of 99 on a tap changer with 33 tap positions.TWA500 is equipped with a large 10.1” graphical touch-screen display, while TWA400 has a 7” graphical touch-screen display. Besides making the interface much more user-friendly compared to older winding ohmmeters, it also enables certain test options that were previously available only with DV-Win software. The most important among them are DVtest, tap changer motor current measurement, “Heat Run” test, test templates, and automatic test mode.
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IBEKO Power AB
Transformer turns ratio testers from TRT series are DV Power instruments mainly designed for the measurement of power transformer turns ratio. Also, they measure transformer excitation current and phase shift. Special tests, such as automatic vector group detection and magnetic balance, can be performed on three-phase transformers and three-phase autotransformers.All models, except TRT03 series, have a built-in true three-phase power source, which is necessary for testing turns ratio of transformers with special configurations, such as phase-shifting, rectifier, arc-furnace, traction transformers, etc.DV Power turns ratio testers can output various test voltages for different applications. From the extremely low test voltage of 1 V AC that enables turns ratio verification of the majority of current transformers, up to the highest test voltage of 500 V AC that provides the most accurate turns ratio testing of power transformers used in power generation and transmission. By using the external booster, test voltage increases up to 5 kV AC in order to successfully test capacitive voltage transformers.All DV Power turns ratio testers have a built-in tap changer control unit. Because of that, it is possible to control the on-load tap changer (OLTC) directly from the device. In order to make the most out of this feature, the instrument and included DV-Win software can be programmed to do everything automatically – running turns ratio tests, changing OLTC tap positions, and saving results. This option significantly facilitates and shortens the turns ratio testing time.TRT turns ratio testers use the same set of cables as three-phase winding ohmmeter & tap changer analyzers from the TWA series. Consequently, it enables one-time cable setup for performing eight tests:turns ratioexcitation currentphase anglemagnetic balancevector group detectionwinding resistanceon-load tap changer DVtestand demagnetization.
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TWA Standard Series -
IBEKO Power AB
When it comes to winding resistance measurement on three-phase power transformers and autotransformers, TWA Standard series offers some of the most technically advanced instruments with LCD display in the market. Both models are capable of testing six transformer windings with a one-time cable connection, as well as three-phase automatic transformer demagnetization. The stored magnetic energy is safely automatically discharged at the end of the test. The built-in tap changer control unit enables automated test mode, where the instrument operates the tap changer without operator input and records winding resistance results based on pre-selected stabilization criteria. This option makes the operator’s job significantly easier.Both models can output test currents from 5 mA to 25 A DC for the purpose of winding resistance measurement. TWA40D has a special test mode for checking the synchronization of on-load tap changers with three phases simultaneously tested in parallel, in which the total test current can rise to up to 40 A DC.TWA40D has additional advantages when it comes to non-intrusive tap changer analysis. The unique DVtest method enables checking the moving contacts of on-load tap changers during the transition, measuring the transition time, detecting open circuits, and many other types of faults. It is performed with 0.1 ms sampling rate, simultaneously with the measurement of tap changer motor current which helps with the detection of motor and mechanical issues. A special proprietary algorithm is used for testing tap changers connected through a built-in series (booster) transformer. The DVtest can be performed either on one phase or on three phases simultaneously. It can also be performed as an additional test simultaneously with the winding resistance test in all tap positions.An additional unique advantage of TWA40D is the capability of simultaneously testing the winding resistance of all three phases of a three-phase transformer (connected in a YN configuration). This can significantly shorten the total testing time – for example, it enables the operator to perform 33 measurements instead of 99 on a tap changer with 33 tap positions.The test leads for TWA three-phase transformer winding ohmmeters are interchangeable with the TRT turns ratio testers, which means that both sets of tests can be performed with a single test lead connection to the power transformer terminals.
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PCRM200S -
The Motwane Manufacturing Company
The Motwane make Contact Resistance Meter (Model:PCRM200S) is a digital micro-ohmmeter, specially designed to measure extremely low resistance in micro ohm. The Instrument is based on Kelvin 4-wire connection method for measurement of low resistance.The Current injection is fixed at 100A & 200A. Test information like current injected with measured resistance & voltage drop is displayed with real time data on large LCD with backlit.This User friendly Instrument and it's accessories are housed in easy transportation case. Advanced Windows based software isprovided for data downloading, analysis and report generation. Internal memory of 199 records is provided for onsite data storage withDate & Time stamping & Recalling facility. Thermal printer is the additional feature provided to print the test results.
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HR2 -
Alpha Lab, Inc.
The Model HR2 meter measures resistance in nine ranges from 1 ohm to 1.9999 Tera ohms (1.9999x1012 ohms), and conductance in a single range of 0.00 to 199.99 pS (pico siemens, or pico mhos), all at low voltage of < 2 volts across the sample. Basic accuracy is +/- 2% of reading +/- 1 count. For resistance higher than 1.9999 Tera ohms, the conductance range can be used to measure conductance down to 0.01 pS (100 T ohms). The meter has a conductance range because samples with simultaneously high resistance and high capacitance settle faster to their final value on conductance (usually under one second), than on resistance (several seconds), and conductance is also capable of detecting higher resistance than the resistance ranges can. Note that resistance in units of T ohms is the inverse of conductance in pS, so that the resistance can be calculated from the conductance. For example, 100 pS is 0.01 T ohm (10 G ohm), and the highest readable conductance of 199.99 pS is essentially 5 G ohms.
