Winding Resistance
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Product
Motor/Generator Test Equipment
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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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Product
Winding Resistance Test
20A DC booster
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The 20A DC STCS booster allows to perform resistance tests on a PT with a current up to 20 A DC. The option is used together with STS 5000 and STS 4000 and must be connected to STCS module.
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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
Transformer Ratio Meters
Handheld Turns Ratio & Winding Resistance Tester TWR-H
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TWR-H is a handheld, battery operated, fully automatic test set specially designed for turns ratio, phase shift, excitation current and winding resistance measurements of transformers. It can also perform demagnetization of these transformers. Transformer turns ratio is determined by applying AC voltage across high voltage winding, accurately measuring AC voltage across the corresponding unloaded transformer winding, and then displaying the ratio of these voltages. User can enter a transformer’s nameplate voltages, so that turns ratio deviation can be calculated. This feature eliminates any error otherwise caused by an operator’s manual calculation. TWR-H compares measured turns ratio with the nameplate ratio and prints out the % of error for each test. Transformer winding resistance is determined by injecting DC current through a winding, accurately measuring DC voltage across the winding, and then calculating resistance as the ratio of voltage and current. The device generates true DC ripple-free currents. Both the injection of the current and the discharge of energy from transformer magnetic circuit are automatically regulated.
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Product
Fully Automatic Transformer Winding Resistance Tester
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Measure DC resistance of transformers windings etc. Introduction: The NMC ''TDR'' is a high precision, new generation, light weight large output current and micro-processor controlled tester. This replaces old DC wheat stone bridge and double arm bridge for measurement of DC resistance. ''TDR'' adopts new advanced test current power supply technology, four terminal measurement, digital display of resistance value and test current. ''TDR'' is powered by 220V AC mains single phase supply. The measurements are accurate as the test current is highly stable. High automation is achieved with automatic discharge warning.Principle: The constant current generated is fed to the resistance under test through the current terminals and the voltage drop across the resistance under test is measured and displayed in ohms. A true four terminal measurement is used to eliminate the need for lead resistance compensation.
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Product
Transformer Heat Run Tester
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1. Suitable for all transformers below 240MVA heat run test and winding resistance testing.2. Printing heat run data automatically.3. With double power supply, can test high voltage side and low voltage side simultaneously and test any operation respectively.4. With anti breakage protection function of inductive test items.
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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
High Resistance Measurement Universal Adapter
N1414A
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N1414A High Resistance Measurement Universal Adapter is used to simplify the connection for high resistance measurements by B2980A series electrometer.
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Product
Resistivity Cell For N1413 (50 Mm Electrodes)
N1424A
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The N1424A is designed to operate specifically with the B2985B/87B Electrometer/High Resistance Meter. It is used to measure surface or volume resistance/resistivity of insulation materials. The N1413A High Resistance Meter Fixture Adapter is required to connect the N1424A to the B2985B/87B.
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Product
Primary Current Injection Test Set
T 2000
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T 2000 is a portable current transformer test set which allows to perform many different measurements such as saturation, ratio and polarity tests and CT winding resistance test. Substation maintenance and commissioning test equipment, T 2000 is extremely appreciated by electrical engineers for its high accuracy and portability.
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Product
Microohmmeter
MMR-6500
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The MMR-6500 digital meter is designed for measuring low resistances with a stabilised current of up to 100 A. The use of test clamps enables the safe measurement of breakers (high-, medium- and lowvoltage), isolators and other components earthed on both sides. The MMR-6500 series meters are equipped with a unique module in their class that measures inductive components which have a current of up to 10 A, enabling the winding resistance of motors, transformers and other inductive components to be measured. Another useful function is the temperature measurement and the automatic compensation of results with relation to the measured temperature or temperature set by the user. The system is completed with a recorder function. Special measuring algorithms and additional functions allow an appropriate measuring method to be chosen depending on the measured component and measurement conditions, thus, widening the application areas of the meter. The state-of-the-art user interface, various communication interfaces, wireless communication and communication with the computer, printer, 2D code reader are integrals features which enable full, comfortable and intuitive management of not only measurements and their results but also ID data of measured components.
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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 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
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 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
Wind Turbine Lidar
ZephIR 300
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ZephIR 300 measures wind characteristics onshore and on fixed or floating platforms offshore from just 10 metres (33 feet) up to 200 metres (656 feet) from installed position to inform wind regime and quality studies during the development and operation of wind farms onshore and offshore.
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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
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 3000
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The Kestrel 3000 Pocket Weather Meter is the handheld weather-monitoring device that provides a wide range of functions, plus accurate relative humidity measurements. Before the Kestrel 3000 came along, the technology required to gather this information would require masses of equipment but not anymore. The Kestrel 3000 Weather Meter measures essential environmental parameters like temperature and wind speeds, and has added advantages for professionals that need access to humidity and heat stress readings.
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Product
Resister
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Our ARFC type Film Flat Chip Resistor & ARFCN type Thin Film Chip Resistor Network are high precision Metal Film resistors produced with high purity. Alumina Substrate and Ni-Cr-Si Resistor Film based on high precision Etching Technology. The electrode Terminals are made with Spattering Film and Nickel-Solder Plating, and solderability is very good in all Flow, Reflow and Dipping type soldering for Hybrid IC, SMT, PCB etc. Our ARFC Metal Film Resistor & ARFCN type Thin Film Chip Resistor are being produced under the thorough quality control, and are being used widely in high precision and high reliability electronics circuit such as Measuring Instrument, Medical Instruments, Communication and other Industrial Instruments.
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Product
Resistivity Meters
SSR-MP-ATS
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Integrated Geo Instruments & Services Private Limited
The instrument design incorporates several innovative features and advanced techniques of digital circuitry to make it a reliable Geophysical tool providing high quality data useful for mineral and groundwater exploration and any other Geophysical applications. The SSR-MP-ATS sends the entire current into the ground without wasting power for constant current generation thus increasing the signal strength to probe deeper layers.
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Product
Resistive Solution
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The Resistive type is a touch control board which works with 4-Wire and 5-Wire resistive touchscreens. It applies to touch sensor and provides either USB or RS232 ports to meet customers' various needs. The Resistive solution provides high reliability, fast conversion times and high resolution with Combo 4-wire and 5-wire touch and Combo USB / RS232 port.
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Product
Earth Resistance & Resistivity Meter
MRU-200
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MRU-200 is the only meter in the market which uses all measurement methods.Possible measurements:- earth resistance measurment with 2-pole, 3-pole,4-pole method,- impulse earth resistance measurement, two kinds of measuring impulse 4/10s, 10/350s,- earth resistance measurement without disconnecting measured earths (using clamp),
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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
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
Semiconductor Package Wind Tunnel
WT-100
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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.
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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
Resistivity Standard
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Resistivity Standards are bare silicon wafers available in 3 in, 8 in and 12 in sizes. The silicon is p-type (Boron) doped to nominal resistivity values, from 0.002 ohm.cm to 75 ohm.cm as available on the 3" model.
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Product
Wind Turbine Condition Monitoring
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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.
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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.
