Wind
See Also: Wind Tunnels, Anemometers, Wind Turbine, Wind Speed, Turbulence
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Current Transformers
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The Institute of Electrical and Electronic Engineers defines a current transformer (IEEE Std C57.13) as “a transformer intended to reproduce in its secondary circuit, in a definite and known proportion, the current of its primary circuit with the phase relations substantially preserved”. Its primary winding is connected in series with the conductor carrying the current to be measured or to be controlled and its secondary winding is connected to the measuring, protection or control devices. Osborne designs and manufactures current transformers which are used for instrumentation applications, others which are used for power system synchronizing applications and others which are used in protection circuit application. They have been designed to meet specified current ratios, burden impedance and transformation errors.
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Digital Surge Tester
25KV, 30KV & 40KV
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The Digital Surge Tester is designed specifically to test the coils and windings of High range AC Rotating machines ranging up to 13.8KV. The Surge Tester has an Embedded Industrial PC with 8 inch Touch screen Display and software to Store, Recall and Print the Test Reports.
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Multi-Channel, Programmable Current Source
CS-48-100
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The Model CS-48-100 is a multi-channel, programmable current source. Developed for both semiconductor and digital superconductor electronics, it is computer-controlled and features 48 low noise current source outputs. Each source output has the capability to both set and read back currents and can be set to a zero current high Z mute state. Each of the 48 sources are optically coupled for control and are sourced from their own secondary winding for complete galvanic isolation. The device consumes a maximum of only 80 W and handles a maximum load current of 4.8 A total over all outputs. Operating over a range of 0-100 mA on each channel, the device features accuracy of +/-25 ?A. The mute state can be set thru a rear panel interlock or from the front panel button for maximum circuit protection. The unit can be mounted in a standard-sized rack.
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Permanent Noise Monitoring System
831-NMS
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The Model 831-NMS permanent noise monitoring system is designed for long term monitoring around airports, industrial facilities, motorsport complexes, wind farms, mining operations, and within the general community. Many required accessories are integrated through the INT docking station. Two way remote communication is available for monitoring and control from a central station. Larson Davis provides the hardware, software and open interface to allow this system to be customized for any application or purpose.
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Resistance Measuring Equipment
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measure coil winding resistance of motors, transformers, etc, under energizing AC voltage. The direct reading is possible with 4-wire measurement method, and temperature of specimens is immediately calculated from measured resistance values and displayed. Ambient temperature is automatically taken in by connecting an option sensor Model DAC-PT-100.
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Product
3 Phase Voltage Extension To Turns Ratio Meter
T-REX
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The Raytech three phase voltage system option T-Rex is an optional system accessory for 3-Phase transformer ratio meter test sets designed by Raytech (i.e. TR-MARK III). T-Rex was designed to give Engineers and Test Technicians the ability to test the phase relationships and actual voltage ratios of transformer windings while applying three phase voltage.
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Motion Based Waves
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Accurate Motion Based wave measurements are critical in applications such as offshore wind farm development, navigation, cable laying, breakwater building, and bridge construction.Waves also result in continuous loads on marine structures, including docks, moorings, and offshore platforms.Motion Based Waves are challenging to measure. Variables to consider when collecting wave data include the depth of the measuring device, proximity to shore, wave types, and available infrastructure from which to measure.Several methods for measuring motion based waves are available, and careful selection of the best approach is needed to get the optimal result.
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Three-Phase Transformer Winding Resistance Meters
TWA Advanced Series
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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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Product
Distribution Transformer Tester
NDB-DOC-3™
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The NDB-DOC-3™ is a test instrument designed for distribution networks transformers from 5kVA to 3MVA. It can determine the presence of short circuits or open circuits in the distribution transformer primary winding & also short circuits on the secondary winding.The NDB-DOC-3™ is designed to be operated without disconnecting the transformer’s secondary windings from their loads.
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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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Dew Point Meters
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Measures and records climatic conditions including: Relative humidity, air temperature, surface temperature, dew point temperature, wind speed and difference between surface and dew point temperatures. Ideal for surface preparation as required by ISO 8502-4, BS 7079-B4, ASTM D3276, IMO PSPC, SSPC-PA7 and US Navy NSI 009-32. View Video
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Product
Split-type Cable Fault Location System
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Weshine Electric Manufacturing Co., Ltd
Electricity networks have had to become more flexible, reacting more quickly to the changes and needs of higher performance. This demand for flexibility is especially true where multiple generation sources occur, such as the intermittent power from renewables like solar and wind energy. While modern SMART grid technology can quickly identify faults in sub-station and generating units, cable faults can still occur anywhere on the network.
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Product
Power Inductor - Impulse Winding Tester
19301A
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Chroma Systems Solutions, Inc.
The Chroma 19300 Impulse Winding Tester with high/low inductance test technology has 1000V of impulse voltage and a 200MHz high speed sampling rate that satisfies most power inductor test requirements for a wide range of inductance products from 0.1uH to 100uH. The built-in Area Size Comparison, Differential Area Comparison, FLUTTER value, and LAPLACIAN value functions are able to effectively inspect coils for insulation abnormalities.
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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
Armature Tester
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Qingdao AIP Intelligent Instruments Co., Ltd
This tester is suitable for online or offline detection of various armature electrical properties, such as power tool motors, garden tools, vacuum cleaner motors, small household appliance motors, automobile motors, fitness equipment motors, permanent magnet micro-motors, etc. The tooling of the tester meets the requirements of arbitrary placement of the armature, and can automatically and accurately sort/track faulty solder joints; the equipment startup methods include buttons, remote control, and sliding cover; it meets the armature test of special processes such as double insulation, and automatically identifies solder joints, winding short circuit/open circuit , winding errors, poor welding and other problems; the tester can also automatically count the number of tests, the number of defectives and other data, which is convenient for quality management analysis.The tester test items mainly include:bar-to-bar resistance, diagonal resistance, welding resistance, insulation resistance, ac hi-pot, surge.
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High Voltage Insulating Diagnosis Systems
DAC-6017
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It can measure and diagnose the insulating characteristic of winding coils of high voltage electric motor, generator, and etc.It also makes possible to build in-vehicle type or stationary type in accordance with the application.
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Chroma Milliohm Meters
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Chroma Systems Solutions, Inc.
The Chroma 16502 Milliohm Meter is Chroma’s newest digital Milliohm Meter. 0.001mΩ~1.9999MΩ wide measurement range. DC, Pulsed, and Dry-circuit test current driving modes, enable the Chroma 16502 can be properly used in DC resistance measurement for various inductive components (coil, choke, and transformer winding etc.), cable, metallic contact (connector, relay switch etc.) and conduction materials.
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Micro and Milliohmmeter
AD-7010
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AD-7010 instrument is designed to measure, with high accuracy, the resistance of conductive elements power equipment: motor windings, transformer windings, conductor rails, inspecting the electrical conductivity of bolted joints, crimped, welded, the contacts of switches and relays.
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Relaying Current Transformer Analyser
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*Measures Ratio, Excitation Characteristics, Polarity, Winding Resistance, Remanance, and Insulation Resistance of secondary winding. * Determines Composite Error. * Used to test un-mounted CTs or CTs that are mounted but isolated inside the power system equipment. * Conducts a whole series of tests automatically, thus speeding up the time to commission CTs and relaying systems. * Battery powered test set - light weight & fully portable. * Provides a graphical presentation of the CT excitation characteristics. * Determines the IEC 10/50 knee point and the point of maximum permeability, ANSI 45 degree Slope Point. * Detects shorted turns or insulation problems within the test CT, thus avoiding commissioning of faulty equipment.
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Vibration Monitoring
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From milling machines to pumps to wind turbines – wherever the condition of machines and systems needs to be monitored, Pepperl+Fuchs vibration monitoring products help prevent unplanned downtime and ensure personal and system protection.
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Winding Resistance Meter 50Amps, 2 Channels
WR50-12
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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.
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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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Multidimensional Ultrasonic Anemometers
TriSonica®
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TriSonica® sensors measure wind and other atmospheric variables with speed, accuracy, and precision. They are size, weight, and power (SWaP) optimized for rapid deployment in stationary, mobile, and network systems.
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Milliohm Meter
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Utility area: measurement of secondary transformer winding ;measurement of division switch for sufficient low-ohm value
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All-in-One Meteo Compact Station
HDMCS-200
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A ready to use and easy to set up Automatic Weather Station. The AWS measures wind speed, wind direction, humidity, dew point, temperature, barometric pressure and solar radiation.
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Bobbin Winding Coil Turn Tester
SS108 Series
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This (SS108** series) winding coil turn testers are used for testing turn of various coils without core, like as: generator winding, transformer winding, relay, inductor, contactor, ignition coil, voice coil, etc.
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Product
High and Low Temperature Humidity Chamber
GDJS/GDJW
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•The chamber is produced by SUS304 Steel, the temperature keeping material is produced by Polyurethane hard foam and ultra-fine fibre glass, the doorframe heat insulated by Double high temperature aging silicone rubber door sealing strip. •The temperature controller is used by Korean TEMI display in English/Chinese and German Siemens PLC, it can be communicated to PC via RS-232. The temperature accuracy is 0.1℃ and humidity is 0.1%R.H •The temperature sensor is platinum PT100 Ohms/MV resistor •The heating system is full separately system which produced by Nickel chromium alloy electric heating type heater •The cold system is applied by fully enclosed fan cooled single-stage and cascade refrigeration mode, the compressor is from France TECUMSEH brand which can allow you get after sales support from many countries •The cyclical system is applied by High temperature low noise air conditioning type motor and Multi blade centrifugal wind wheel •The safety self-protection function include Electric leakage, short circuit, over temperature, motor overheating, compressor pressure, overload, over-current protection •Working Power: AC380V±10% 3phases and frequency 50Hz/60Hz •Working Environmental: Temperature is 5℃～+30℃ Humidity ≤85%R.H
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Static & Lighting Chokes
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Lighting chokes are used to pass tower lighting voltages across the base insulator of a series-fed tower without appreciably altering the tower impedance. LBA TC-300 general purpose tower lighting chokes are provided for three wire 110/220 VAC circuits. Maximum current is 25 amps. These chokes are rated for peak base voltages to 10,000 volts, and present a typical reactance of +j5000 ohms at 530 kHz. Bypass capacitors are provided on each winding.
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Mechanical Load Tester
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Solar modules and collectors, whether on roofs, in façades, or freestanding, are often exposed to high mechanical stress or load: A deep layer of snow or strong winds can greatly affect the materials and connections. Mechanical load test stands accurately test the durability of PV modules and thermal solar collectors.
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Transformer Performance Tester
6691
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applying ±90V voltage on the winding of the transformer demagnetized and get the voltage value on the terminal and the current value in the winding to draw the hysteresis characteristic curve. This method can be used for linear quantitative analysis of residual magnetism in transformers, and fast demagnetization can be achieved by tracking hysteresis curves. The analyzer can measure magnetism residual rate before and after demagnetization.
