Winding Ohmmeters
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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
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
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
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.
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Product
Compliance Voltage Ohmmeter
ΩhmRanger-LCV
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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.
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Product
Wind Transmitters
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Comptus wind speed and direction transmitters convert the sensor signals into electrical outputs suitable for connection to displays, computers, dataloggers, wireless transmitters, or other controls. Output options include: 0-1 mA, 0-1 V, 0--5 V or 4-20 mA. Power options include: 24 VAC, 120VAC, 230VAC, 12-24 VDC. Comptus transmitters come standard in a track mount for installation in existing enclosures. They are also available in NEMA rated enclosures. Please contact us for enclosure options.
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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
Digital Micro Ohmmeters
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Our micro-processor controlled range of units offers the testing capability of up to 600 amps DC with 0.1μΩ resolution. Auto-ranging metering simultaneously displays all three parameters (mV, A, and μΩ).
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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
Wind Speed Anemometers
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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.
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Product
Wind Power Solution
ECO MITSUBISHI
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The ECO MITSUBISHI is custom-made with firmware and fixtures designed specifically for Mitsubishi turbines: 1000, 1000A, MWT 2.4. 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
Winding Resistance Meter
TRM 25
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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.
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Product
Pocket Wind Meter
Kestrel 2000
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The Kestrel 2000 Pocket Weather Meter is the most elementary temperature and wind monitor in the Kestrel Meter collection. Capable of measuring both wind and temperature phenomena, the Kestrel 2000 Thermo Anemometer is a compact and durable weather meter that puts essential weather information in the palm of your hand
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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
AUTOMATIC WINDING TEST SYSTEM
VE9036SU
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6 CHANNEL Microprocessor based Automatic Test System for Automobile Coils, Magnetos, Alternator, Motor Winding. Can Test : Impulse Winding Tester (IW), AC/DC HiPot, Insulation Resistance (IR), Inductance (L), DC Resistance (DCR)
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Product
MICRO OHM-METER
UONT100A
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International Biological Laboratories
This Test Set is capable to measure low resistance like switch contacts, breaker contacts, busbar splices, joints, fuses, low inductive windings etc. by circulating high value of D.C. through the contact/junction and measuring D.C voltage drop (4 terminal method) which, sent to instrument amplifiers , thereby being displayed on resistance meter.
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Product
Micro - Ohmmeter / Milli - Ohmmeter
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Basic Accuracy 0.25%Max. Test Current : 5A (120mV) for 7002Max. Test Current : 10A (60mV) for 7272Manual or Auto RangeFour Terminal Kelvin Measurement6 Ranges with 1mV Best ResolutionMeasurement of Resistive and Inductive MaterialsSetting for HI, LO & PASS ReadingsMemory of 3000 Measurements DataProgrammable HI-LO Alarm with memory of 20 DataLarge LCD with Backlight & HOLD FunctionLow Power ConsumptionBattery Operated with AC AdaptorLow Battery (Voltage) AlarmLED indication for Invalid Resistance MeasurementCable Length Measurement in feet & metersUser Interface Software for PC Communication via RS232C(to USB Bridge) cableBuilt-inBatery Chaging Circuit & Calender Clock
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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
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
Wind Measurement and Meteorological System
Moriah
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Aeronautical & General Instruments Ltd.
MWS is a solid-state system with no moving parts, so providing a highly accurate, reliable and low cost of ownership system, which is ideal for supporting ship based aviation activities. The system comprises of 1 to 5 Solid State Wind Sensors, Dual Redundant Processor Unit, a range of Multi-Function Color Displays (8.4”, 10.4” and 15.0”) and utility Software/Graphic User Interfaces. In addition full Meteorological capability can be achieved with the inclusion of Air Temperature & Humidity, Air Pressure and Sea Temperature Sensors.
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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 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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Ultrasonic Wind System
UWS
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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.
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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
Offshore Wind Farm Testing Equipment
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Potential readings taken by a diver holding a BathyCorrometer in contact with submerged steel structures can be analysed by engineers to determine whether the cathodic protection systems are working effectively or whether remedial action is required.
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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
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
Handheld Wind Meter
E9350
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Stationary wind meters have not always been available at all sites where they are needed, such as sites for flying model aircraft, para-gliding, sailing, surfing and many other leisure activities. In addition to the excellent portability provided by its compact design and the innovative “packaging” of the wind wheel, the new ELV handheld wind meter permits not only determination of the wind strength, but also the complex assessment of the weather situation at the site.
