Winding Ohmmeters
-
-
Product
Single-Phase Transformer Winding Resistance Meters
RMO-TD Series
-
Using the most advanced switch-mode technology available today, the RMO-TD series is ideal for winding resistance measurements of inductive objects. Transformer resistance meters and tap changer analyzers are perfect for testing:transformer windings (power transformers, distribution, autotransformers),all types of tap changers,generators,electrical motors,high-current busbar joints,cable splices,and welding joints.In addition, transformer demagnetization can also be done with all RMO-TD instruments.The RMO-TD series contains 3 models, with maximal test currents from 25 A (RMO25TD) to 60 A (RMO60TD).The three independent voltage sense channels enable testing of three windings in series. This enables measurements of winding resistance in every tap position of an on-load tap changer without discharging between the tests.All RMO-TD transformer resistance meters have a built-in tap changer control unit. It enables remote control of on-load tap changer (OLTC) directly from the device. In order to make the most out of this feature, DV-Win software is included which can be programmed to do everything automatically – running winding resistance tests and changing OLTC tap positions.The DV-Win software also 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.All results can be exported in the report format.
-
Product
Winding Resistance Meter
TRM 25
-
SCOPE introduces 25 A state of the art precision winding resistance meter, specially designed for field testing as well as factory testing of large transformers up to 500 MVA. Winding resistance value of transformer and rotating machine are directly displayed on 5.7” TFT display. TRM 25 is designed to work in live EHV switchyard conditions, ensuring operator’s safety and repeatability of results. Maintenance time saving is ensured by one time connection to transformer with simultaneous resistance measurement of three / six windings, measurement of resistances of all taps with automated tap change and demagnetization facility. The meter is protected against the back-EMF offered by large inductive windings.
-
Product
Impulse Winding Tester
TH2883S8-5
-
Changzhou Tonghui Electronic Co., Ltd.
TH2883 series products are newly developed impulse winding testers by Tonghui. This product line makes Tonghui as the first provider of impulse winding tester from low voltage of 30V to high voltage of 10kV, single channel to multichannel (Max.:8 channels) in this industry. The instrument adopts popular 32 bit CPU and high density SMD technology, 65k color 7-inch TFT wide display screen, bringing ease for your eyes and convenience to your operation. The impulse voltage of100V~5000V, maximum 8 channel sweep test, maximum 20 test procedures, sampling rate of 200Msps, memory depth of 6k bytes makes your test accurately.The usage of standard sample average, application of demagnetized impulse, high bandwidth analog acquisition circuit, technology of high-fidelity corona extraction as well as the opening of non-destructive test reflect the design philosophy “customer-oriented, share the future technology with you” of Tonghui.
-
Product
Three-Phase Transformer Winding Resistance Meters
TWA Standard Series
-
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.
-
Product
Winding Resistance Meter
TRM 104
-
TRM104 is a portable winding resistance meter, designed to work in live EHV switchyards. Winding resistance values of large transformers up to 500 MVA and rotating machines are directly displayed. The meter is protected against the back emf offered by large inductive winding. A back-lit 4 line LCD with a user-friendly menu sets up the instrument for the test. Winding resistances and safety messages are also shown on this display. It is possible to measure the resistance of two windings simultaneously.The meter contains a special power source for rapid stabilization of test results.
-
Product
IMPULSE SURGE WINDING TESTER
VE2882A-5U
-
Impulse Tester can detect turn & layer short ,the differences in the number of turns and the material of the core. If high impulse voltage is applied, the poor insulation will appear as a corona or layer discharge.
-
Product
Transformer Winding Resistance Testers / TRT ? 27
TRT-27 series
-
UDEYRAJ ELECTRICALS PRIVATE LIMITED
Fast measurement: Test current 2.5A to 20A, Digital display of resistance and test current.
-
Product
Impulse Winding Tester
TH2883-10
-
Changzhou Tonghui Electronic Co., Ltd.
TH2883 series products are newly developed impulse winding testers by Tonghui. This product line makes Tonghui as the first provider of impulse winding tester from low voltage of 30V to high voltage of 10kV, single channel to multichannel (Max.:8 channels) in this industry. The instrument adopts popular 32 bit CPU and high density SMD technology, 65k color 7-inch TFT wide display screen, bringing ease for your eyes and convenience to your operation. The minimum impulse voltage of 30V, maximum impulse voltage output of 10kV, winding test of 1uH inductance value, sampling rate of 200Msps, memory depth of 6k bytes makes your test accurately. The usage of standard sample average, application of demagnetized impulse, high bandwidth analog acquisition circuit, technology of high-fidelity corona extraction as well as the opening of non-destructive test reflect the design philosophy “customer-oriented, share the future technology with you” of Tonghui.
-
Product
Winding Resistance Meter
TRM 50+
-
SCOPE introduces 50 A state of the art precision winding resistance meter, specially designed for field testing as well as factory testing of large transformers up to 500 MVA. Winding resistance value of transformer and rotating machine are directly displayed on 5.7” TFT display. TRM 50 is designed to work in live EHV switchyard conditions, ensuring operator’s safety and repeatability of results. Maintenance time saving is ensured by one time connection to transformer with simultaneous resistance measurement of three / six windings, measurement of resistances of all taps with automated tap change and demagnetization facility. The meter is protected against the back-EMF offered by large inductive windings.
-
Product
Compliance Voltage Ohmmeter
ΩhmRanger-LCV
-
ΩhmRanger-LCV is an accurate, 3.5 Digit, Low Compliance Voltage Ohmmeter. It is able to measure from >100M to 10 Ohms, ΩhmRanger-LCV is suitable for professionals and enthusiasts alike.
-
Product
Hot Wire Anemometer Wind Meter Anemometers / Digital Anemometers
-
Ideal for industrial and home purposes such as measuring wind speed and temperature of CPU, computer fans, air-conditioners, air blowers, etc.
-
-
Product
Transformer Winding Resistance Testers / TRT ? 2
TRT-2
-
UDEYRAJ ELECTRICALS PRIVATE LIMITED
Fast measurement: Test current 0.02A to 2A DC, Digital display of resistance and test current.
-
Product
Remote Sensing Wind Measurement Device
WINDCUBE
-
WINDCUBE is a remote sensing wind measurement device that uses pulsed Doppler Lidar technology to provide high quality data on par with an IEC calibrated met mast. Introduced to the market by LEOSPHERE, WINDCUBE has quickly become recognized as the market standard for superior performance for both wind resource assessment and wind farm performance monitoring. Lenders have readily adopted data provided by WINDCUBE and consider this device to be “best-in-class.” WINDCUBE is categorized as being in Stage 3 of DNV GL’s rigorous standards related to remote sensor acceptance for formal energy assessment purposes.
-
Product
Impulse Winding Tester
TH2882A-5
-
Changzhou Tonghui Electronic Co., Ltd.
Due to the influence of coil wire material, magnetic material, framework and manufacture technics etc., coil products (such as transformers, motors, etc.) may have defects of low insulation between coil layers, circles and leads. TH2882A series impulse winding tester, adopting high-speed sampling technique, is a new generation analysis test instrument for insulation performance of coil products.
-
Product
WINDING COIL TURNS TESTER
VE201R
-
Winding Turns Tester for Counting Measuring Number of Turns for Air Core Coils, Bobbin Coils or Solenoid Coils. Can Measure : Turns along with Winding Polarity and DC Resistance.Turns Measurement : 1 Turns to 80,000 Turns
-
Product
Semiconductor Package Wind Tunnel
WT-100
-
Thermal Engineering Associates, Inc.
The WT-100 Forced Convection (Moving Air) Wind Tunnel is designed in accordance with the EIA/JEDEC JESD51-6 standard for thermal characterization of semiconductor packages and devices. The vertical design minimizes laboratory floor space requiements. Air is drawn in at the bottom and exhausts at the top. The test section is large enough to accommodate the largest JEDEC and SEMI thermal test boards. Air velocity can be adjusted over the range of 0.5 to 5 m/s; air velocity is monitored with an included hot-wire anemometer connected to a digital display. A Type-T thermocouple is mounted in the test section for monitoring the moving air temperature.
-
Product
Wind Speed Anemometers
-
Comptus A75-101 and A75-104 Wind Speed measurement anemometers are built with durable injection molded polycarbonate rotors and housings, and utilize a fully hardened beryllium copper shaft.
-
Product
Wind Speed and Wind Direction Sensors
-
Wind vanes measure wind direction and are often used with anemometers, which measure wind speed. Campbell Scientific offers a variety of anemometer designs: cup, propeller, ultrasonic, sonic, and lidar. Most of our wind sensors are modified slightly from the manufacturers’ stock items so that they may be used with our dataloggers in research, air quality, and general purpose meteorological applications.
-
Product
Ultrasonic Wind System
UWS
-
Aeronautical & General Instruments Ltd.
Data from the mast-mounted (and virtually maintenance-free) anemometers is processed and used to drive full colour displays. The system calculates cross winds, head winds and tail winds, gusts and lulls and directional variation, as well as allowing for marked discontinuities. Instantaneous data may be displayed, as well as 2 minute and 10 minute averages. Systems can be supplied fully installed with comprehensive engineering and operator training, and post-installation support is available worldwide.
-
Product
Wind Turbine Condition Monitoring
-
It has also become increasingly apparent in recent years that the wind turbine industry has recognised the importance of condition-based monitoring, especially for offshore wind turbines, where access is often limited.To increase reliability and minimise down time, many wind turbine manufacturers, owners and operators are turning to condition-based monitoring systems, aimed at predicting wind turbine maintenance issues, so that operators can quickly and effectively carry out predictive maintenance, repairs and replacements of components when needed, without the need for costly routine maintenance checks and visits. As a result, a condition monitoring system increases operational time, improves site performance and reduces maintenance costs for wind turbines, especially offshore ones.
-
Product
Automatic Winding Turns Tester
-
This tester has the advantage of high accuracy and efficiency, limited influence due to the form and size of the coil to be analyzed, and fast & easy operation thanks to the precision sensor and microprocessor that adopt the patent know-how developed by the manufacture. This tester, when in operation, does not need any further adjustment and calibration. Just connecting the clip leads to each terminal lug of the coil winding, then the tester instantly shows the exact number of the winding turns on the digital display. Unlike other similar devices, input the data of standard coil to test against is unnecessary. In this way, this tester greatly upgrades the inspection and analyzing efficiency.
-
Product
Wind Power Solution
NXA GAMESA
-
The NXA GAMESA is custom-made with firmware and fixtures designed specifically for Gamesa turbines: G80x, G90x, G114, G126, G132, G145. These precisely designed fixtures make generator-to-gearbox alignment easy inside any nacelle – safeguarding reliability and optimizing the energy efficiency of the wind turbine.
-
Product
Winding Resistance Meter 50Amps, 2 Channels
WR50-12
-
Raytech Digital Winding Resistance meter WR50-12 is the enhanced version winding resistance system with a most advanced demagnetizing circuit. It is designed for high degree of accuracy for the measurement of very low resistance of any inductive loads.
-
Product
Transformer Winding Resistance Meters
RMO TW Series
-
The RMO-TW instrument can perform a simple, fast and reliable verification of a transformer on-load tap changer. This instrument allows measurements of a winding resistance at each tapping position of an on-load tap changer without discharging between tests. Problems with OLTC switching, such as interruption, can be detected with these measurements. The results are displayed on a backlit LCD screen.
-
Product
Wind Meters
-
According to the type of application, wind meters are made as hot wire wind-meters or pocket weather wind-meters, all of these wind-meters can measure air velocity and air pressure. Wind meters for the measurement of air velocity and air pressure. The measurement results can be stored in memory of the device (depending on the model). There are a lot of different instruments available in our stores. These wind meters are ideal for taking quick or constant measurements. Wind meters for measuring air velocity and volume flow are available here. The pocket-sized wind meters are implemented as hot-wire wind meters, vane wind meters, cup wind meters or portable, waterproof wind meters depending on the particular application.
-
Product
High Sensitivity Anemometer for Very Low Wind Speeds
HD53LS… Series
-
2-axis ultrasonic static anemometer - high sensitivity to dectect very low speeds. Measurement of wind direction, wind speed and wind gust.
-
Product
Wind Power Solution
ECO GE
-
The ECO GE is custom-made with firmware and fixtures designed specifically for GE 1.5x and 2.5x. These precisely designed fixtures make generator-to-gearbox alignment easy inside any nacelle – safeguarding reliability and optimizing the energy efficiency of the wind turbine.
-
Product
Precision Micro Ohmmeter
BS407
-
High basic accuracy of 0.1%Wide range of 1 µΩ to 20 kΩCurrent reversal switch for detecting thermal EMF effectsCurrent diversion switch for easy zeroingFour terminal measurement using Kelvin clip leads (supplied)Battery operation with built-in charger20mV clamp for "dry circuit" testing
