Winding Ohmmeters
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Product
Transformer Winding Resistance Meters
RMO TT Series
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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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Product
Tap Changer Analyzers & Winding Ohmmeters
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Winding resistance test of inductive test objects, such as power transformers, is one of the most effective non-intrusive ways of checking its condition. Due to their advanced design, DV Power winding resistance meters provide high test currents (up to 100 A DC) and high accuracy (up to 0.1%) within light and portable test instruments. In addition to winding resistance measurement, it is also possible to perform simple, quick and reliable transformer on-load tap changer condition assessment by recording the test current during tap changer operation, also known as DVtest. Because of that, problems with a tap changer connection, contacts, and switching procedure can be detected.DV Power winding ohmmeters consist of single-phase RMO-T and three-phase TWA series. Models from the TWA series are designed for six-winding resistance measurement of power and distribution transformers, with only one single-step cable setup. As a result of reducing the total test time, it enables significant saving of time and money.Typical application areas of these instruments are high-voltage substations and industrial environments. They are intended to measure the resistance of:Transformer windingsOn-load tap changersGeneratorsElectrical motorsHigh-current bus bar jointsCable splicesWelding joints
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Product
Motor Winding Ohmmeter
RMO-M Series
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The motor/generator winding resistance test is used to identify open windings, shorts between two windings, short to grounds, connection mistakes or shorted turns. This non-invasive test of winding resistance helps to pinpoint problems regarding windings in stator or rotor part of an electrical machine. Additionally, motor winding ohmmeter has the capability of performing heat run test which will show a change in windings resistance with an increase of temperature.The RMO-M series is designed as an ideal aid in preventive maintenance of electrical motors and generators. They are powerful (up to 100A of test current), portable (8 kg) and generate DC current which is completely ripple-free. This makes measurement very precise with 0,1% accuracy.Three voltage channels make measurement very easy since it is possible to obtain a value of all three winding resistances in one measurement
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Product
Ohmmeters
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GAOTek provides state of the art, professional grade Ohmmeters for sale to the United States, Canada and Globally. GAOTek Ohmmeters are portable instruments that accurately measure electrical resistance between two points on a circuit. The Ohmmeters have their own power supply through their own battery, and are needed when the two probes (red: positive side of circuit, black: negative side of circuit) are connected to the two points in the circuit where the desired measurement is to take place. The circuit is turned off, which is when the ohmmeter sends its own current through the circuit. Units of Ohms, symbolized by the Greek letter Ω (Omega), are used as a unit of measure when measuring electrical resistance. In accordance with Ohm’s law, when the current is passing through a circuit is at its maximum, the resistance is said to be the smallest.
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Product
Ohmmeter
PDRM-1A
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The PDRM-1A ohmmeter is very accurate for measuring low resistances. You can measure values from 1µΩ to 200Ω. For this reason, it allows a wide variety of measurements to be made with a single instrument.
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Product
Ohmmeter
PDRM-10A
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The PDRM-10 A ohmmeter, with a range of 0.01µΩ to 200 Ω is currently the most accurate and highest resolution ohmmeter on the market, and at only 860 g it is also the lightest and most compact. All this has made it the standard low resistance ohmmeter in many electrical companies, industries and assembly companies. It has a resolution of 0.01µΩ.
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Product
Portable Ohmmeters
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Our portable digital ohmmeters offer true portability without any sacrifice to accuracy or functionality. These ruggedly constructed instruments are ideal for use in the workshop, field or test facilities.
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Product
Wide Range Ohmmeter
PAS-853B
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- Wide Resistance Measurement Range from 0.01 ohm to 9.99x1012 ohms- Nominal Full Range Tolerance Averages <±5%- Fully Automatic Resistance Range, Test Voltage and Electrification Period Control- Automatic or Continuous Electrification ControlRugged High Performance 80 inches (200cm) Test Leads Included- Powered by one long lasting 9V Alkaline Battery- Large, Easy to Read LCD Display- Meets requirements of ESD Association Standards for material and audit resistance measurement requirements- Certificate of Calibration Traceable to NIST included
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Product
Winding Resistance Tester
JYR-50C/40C/20C
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1. With demagnetization function.2. Testing range reach to 20k3. Also apply to testing tranformer with high winding resistance.
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Product
Wind Profilers
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Bristol Industrial & Research Associates Ltd
Biral provides Sodar systems for the 3-dimensional measurement of wind speed and direction in a vertical column extending hundreds of metres above the sensor. Sodar systems are used in applications such as wind energy site assessment, wind shear detection at airports, plume modelling and basic research.
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Product
Wind Meters
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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.
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Product
Live-Line Micro Ohmmeter
Ohmstik Plus
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The Ohmstik Live-Line Micro Ohmmeter measures the micro-ohm resistance of conductors, connectors, splices and switching devices positioned directly on an energized, high voltage lines. This measurement is much more direct than infrared thermography, and is not subject to emissivity, weather, current loading, background, and other influences that cause infrared errors.
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Product
Winding Resistance Meter
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* Selectable four resistance ranges.* 4 1/2 digits LED display* High measurement Current (10A)* True four Technique elimanates lead resistance errors Systems* Fully protected against overloads* Proven design* Computer connectivity through RS 232
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Product
Wind Tunnel Balances
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To meet the increasing demands of a modern wind tunnel and the need for appropriate simulation, HORIBA has developed the rolling road and wheel spinning units for road simulation. To increase the wind tunnel efficiency, the HORIBA wind tunnel balances can be equipped with lifting platforms which enable vehicle modifications to be performed in a short time
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Product
Wind Tunnels
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Omega's Wind Tunnels come in benchtop or floor standing models for any research, manufacturing, or quality control application. All Wind Tunnels are manufactured in The USA.
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Product
Wind River Linux
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For more than 15 years Wind River Linux has been the industry’s most advanced embedded Linux platform, with a comprehensive suite of products, tools, and lifecycle services to build and support intelligent edge solutions.
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Product
Impulse Winding Tester
TH2883S4-5
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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.
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Product
Winding Resistance Tester
JYR20S/10S
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DC winding resistance testing is regarded as another essential routine screening tool. It indicates problems such as loose, defective or incorrect connections, which cause enough transformer failures each year to be regarded as a failure category of its own.
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Product
Wind Sensor
FT722
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Specifically designed for wind turbine control, the FT722 reads wind speeds from 0-50m/s. Its inovative design incorperates a series of "turbulators" (patient pending) which condition the air flow. With updated software, and calibration in our new state-of-the-art wind tunnel, the FT722 delivers our highest levels of accuracy in wind speed, wind direction and accoustic temperature measurement.
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Product
Wind Speed Sensor/Anemometer
ENVIROMUX-WSS
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Rugged anemometer. 3-cup rotor pressed on a stainless steel shaft. Reed switch and magnet providing one pulse per rotation. Rotor diameter: 5 inches. Speed range: ~ 3 mph to 125+ mph (~5 kph to over 200 kph). Rugged Delrin body with bronze and Rulon bushings. Flat aluminum mounting bracket with 2 holes. esigned to be mounted on top of a pole or bracket. 100 feet of exterior grade wire. Maximum cable length: 1000 ft (305m).
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Product
Transformer Winding Resistance Meters
TWA Standard Series
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The TWA standard series instruments are designed to measure the resistance of six coils and simultaneously analyze the three-phase tap changer on load of the primary and secondary transformer coils (provided by model TWA40). This is done in a single cable configuration, with test currents up to 40A. Each transformer configuration has a special measurement algorithm that is optimized for rapid stabilization of test results. The TWA instruments generate a true DC current without ripple. Both current injection and magnetic circuit energy discharge are automatically regulated.
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Product
Impulse Winding Tester
TH2882AS-5
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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.
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Product
Wind Turbine Performance Lidar
Wind Iris
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The Wind Iris is based on Leosphere's leading WINDCUBE pulsedLidar technology, and is the first remote sensor dedicated to turbine-mounted measurements. It measures the horizontal wind speed and direction from 40m to 400m upwind of the turbine. Real time and average data can then be transferred automatically or stored in a data logger.
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Product
Single-Phase Transformer Winding Resistance Meters
RMO-TT Series
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RMO-TT series is perfect for measuring winding resistance of inductive objects such as power and distribution transformers or autotransformers. Additionally, every transformer resistance meter from RMO-TT series can analyze:tap changers,generators,electrical motors,high-current busbar joints,cable splices,and welding joints.Transformer demagnetization can also be performed with all RMO-TT instruments.The series is consisted of 3 models, with maximal test current from 40 A (RMO40TT) to 100 A (RMO100TT). RMO100TT is the only portable transformer resistance meter in the market with 100 A DC output current.The three independent channels enable testing of three windings in series. Consequently, a user can measure winding resistance in every tap position of an on-load tap changer without discharging between the tests.In addition to winding resistance measurement, a user can perform a detailed on-load tap changer analysis by analyzing recorded graphs (10 kHz sampling rate) and by measuring vibrations on an external tap changer tank.All RMO-TT instruments have a built-in tap changer control unit. Because of this, it is possible to remotely control on-load tap changer (OLTC) directly from the device. Also, a user can program DV-Win software 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.
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Product
Wind Tunnel Control System
WTCS
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Wind tunnel facilities are important for the development of all kinds of transportation vehicles. In any kind of wind tunnel - aerodynamic, climatic or acoustic - users are interested in optimization of the valuable factor time for the performance of experiments and measurements. Aerodynamic properties exerting direct influence to fuel consumption have to be optimized.
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Product
Duct Type Wind Speed Sensor
WSA
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Due to environmental quality management and energy management, we've developed WSA, wind speed sensors which can be applied on ventilation systems, air conditioning, and negative pressure rooms. WSA is a high-accuracy duct type wind speed sensor which can quickly measure the small wind speed. It is stable, high-accurate, and with small drift only. Also, it can caculate the value of the current air volume depending on the measured cross-sectional area of the ducting. Ducting installation and screwless terminals help the users work more easily. Besides, the sensor is equipped with EMC anti-interference devices so that it can withstand strong electromagnetic interferences.
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Product
Wind Power Solution
EVO ACCIONA
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The EVO ACCIONA is custom-made with firmware and fixtures designed specifically for Acciona turbines. These precisely designed fixtures make generator-to-gearbox alignment easy inside any nacelle – safeguarding reliability and optimizing the energy efficiency of the wind turbine.
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Product
Portable Winding Resistance Tester
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1. Handheld winding resistance meter2. Conversion function for standard temperature resistance.3. 500 test data can be saved and download by flash disk.4. Temperature testing function.
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Product
Surge Tester (Impulse Winding Tester)
SS6815 / SS6815F
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Surge testers (impulse winding tester) is used for testing and check the insulation grade of turns between turns, insulation grade of layers between layers, insulation grade of windings between turns. It is used widely for transformer, current sensor, voltage sensor, relay, contactor, inductor, motor, generator, valve coil, voice coil, etc.
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Product
Wind Sensors
FT742
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The FT742 measures wind speeds up to 75 m/s. Its innovative design incorporates a series of “turbulators” which condition the air flow to deliver our highest levels of accuracy yet. Available in four mounting options, the Flat Front (FF) and Pipe Mount (PM) are typically used in wind turbine control and the Direct Mount (DM) in meteorological applications. The Surface Mount (SM) has been specifically designed for OEM integration and for use on UAVs/drones.
