Transformer Turns Ratio
measures a transformer's number of primary winding turns to it's secondary turns.
See Also: Winding, Transformer Turns Ratio Testers
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Product
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
G.fast Transformers
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Our line of G.fast transformers are the preferred choice of engineers seeking the most reliable, functional isolation transformers for G.fast transmission. These compact transformers deliver excellent longitudinal balance and total harmonic distortion performance.
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Product
Instrument Transformer & Switchgear Testing
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Our stationary and mobile instrument transformer test systems are used to test current and voltage instrument transformers. Among other things, accuracy testing, demagnetization and insulation testing are possible.
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Product
Split-Core Current Transformers
CTS Series
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Continental Control Systems LLC
The CTS series CTs are available with windows from 0.75 inch up to 2.0 inch. They have a removable section, so that they can be installed without interrupting the circuit. 0.333 Vac output at rated current Accuracy ±1% from 10% to 100% of rated current Phase angle <2° degrees at 50% of rated current (valid for 70 A or higher) 8 ft. twisted-pair wire, 600 Vac rated UL recognized for voltages up to 600 Vac, CE mark, RoHS
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Product
8k Wide Aspect Ratio CMOS Image Sensor
Snappy Wide
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Snappy Wide is a new 8K wide aspect ratio CMOS image sensor designed specifically for logistics applications where larger conveyor belts are becoming increasingly common. A single Snappy Wide sensor can cover this large field of view successfully, replacing multiple sensors for a more efficient and cost-effective solution.
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Product
Instrument Transformer Comparator
PMT20010
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Power Measurement Technologies Inc.
The PMT20010 Comparator is an automatically balancing bridge that measures the accuracy of instrumentation potential and current transformers.
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Product
Split type AC Current Transformer
CTF-200T
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MULTI MEASURING INSTRUMENTS Co., Ltd.
*1A output for metering application.*Wire stopper is equipped for the slipping protection.*The special connector is not necessary as the output terminals are provided.*Open circuit protection and nonflammable plastic material.
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Product
Current Transformer
LTTJ
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Love Controls LTTJ Series Current Transformers allow easy monitoring of the current flowing to your load. This easy to use device provides a 0 to 10 VDC signal into both low and high impedance circuits, and is easily scalable to your needs
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Product
Transformer Test Equipment
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DV Power test instruments perform various diagnostic tests on power and instrument transformers. Even more, a unique feature is a condition assessment of on-load tap changers. Performing a transformer test before their breakage can be crucial.Test instruments are portable and enclosed in durable metal cases. Also, the 19” rack-mounted version suitable for factories is available as well.Applications supported by DV Power transformer test equipment include:Winding resistance measurement (IEC 60076-1)Analysis of on-load tap changers (IEC 60214-1)Heat run test (IEC 60076-2)Automatic transformer demagnetizationTurns ratio measurement of power and instrument transformers (IEC 60076-1)Excitation current measurementPhase angle measurementTransformer vector group detectionDemagnetization status verificationAll of the above-mentioned measurements are performed with the highest accuracy.The advanced DV-Win PC software collects both numerical and graphical results. As a result of that, these features provide an easier and more efficient analysis. After the test, DV-Win software generates a test report with a single click. Furthermore, a user can easily customize the test report and save it in different formats, such as XLS or PDF.Finally, the analysis of on-load tap changers is performed by the new method called dynamic resistance measurement (DRM). This is a non-intrusive method. Therefore, it allows detecting problems in on-load tap changers without disassembling them.
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Product
Zero Phase Current Transformer
MZL-45
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MULTI MEASURING INSTRUMENTS Co., Ltd.
Split-core type for measuring zero phase current
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Product
HDBaseT Transformers
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Pulse HDBaseT transformers are designed to provide common mode noise reduction for improved EMI performance and support power over HDBaseT (PoH) applications of up to 100W. The HDBaseT technology enables 5Play feature set, which includes ultra high definition 4K video, audio, 100BASE-TX Ethernet, various control signals, and up to 100W of power, on a single 100m/328ft CAT5e/6 cable.
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Product
High Frequency Current Transformer
HFCT
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The HFCT is a high frequency current transformer designed specifically for picking up partial discharge signals. It has a split core ferrite to allow retrospective fitting to earth straps without the need for disconnection. The durable body has a hinge and a quick release latch, making use quick and easy. The HFCT is constructed with an aluminium body to provide RF shielding and improved performance in noisy environments.
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Product
Transformer Test Equipment
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KV Hipot Power Test Equipment Co.,Ltd
Transformer Test Equipment. Ensure that a transformer meets performance and reliability requirements, from the production line to after a repair or upgrade, when a major disruptive event occurs such as a lightning strike, or for preventive/predictive maintenance.
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Product
Test Sets For Transformer Industries
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Contemporary Test Sets For Transformer Industries are developed to recognize the potentially disastrous current transformer errors. They prevent the primary current from overpowering insulation and short circuits. They are used for developing a testing and maintenance plan for addressing the errors before any failure to save money and time. With these powerful test sets, they are sure to perform saturation testing to test the knee point of a signal by comparing primary and secondary windings.
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Product
Distribution Transformer Tester
DOC-2000™
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The DOC-2000™ is a test instrument designed for distribution networks transformers up to 167KVA. It can determine the presence of short circuits or an open circuit in the distribution transformer primary winding & also short circuits on the secondary winding. The DOC-2000™ is designed to be operated from an arial device or from the ground at the end of a hot stick without disconnecting the transformer’s secondary windings.
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Product
Air-to-Fuel Ratio Analyzer
MEXA-730λ
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Previously MEXA-700λII used know-how and ingenuity gathered from HORIBA air-to-fuel ratio measurement technologies used worldwide, to provide the highest level of performance.The MEXA-730λ adopts this performance and adds original design for enhanced visibility and operation.A new sensor coefficient data memory function makes it possible to restore back-up data, providing faster start-up times and saving valuable operation time.This enhanced device will meet your multiple testing requirements covering applications from, lab analysis of air-to-fuel ratio, excess air ratio and oxygen concentration, to on-board real time measurement.
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Product
Power Transformer Monitoring
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Optimize the efficiency of your transformers by relying on our flagship DGA monitoring system with long-term stability, no maintenance needs, no false alarms and a revolutionary method for detecting ambient air ingress.
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Product
Zero Phase Current Transformer
MZL-65
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MULTI MEASURING INSTRUMENTS Co., Ltd.
Split-core type for measuring zero phase current
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Product
Burn Down Transformer
ATG 6000
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Cable fault location with the BAUR ATG 6000. The high performance ATG 6000 burn down transformer is used for impedance reduction of cable faults in low- and medium-voltage networks. The short-circuit proof 5.75 kVA stray field transformer delivers a maximum voltage of 15 kV and is housed in a fully enclosed 19" housing.* Proven methodes for cable faults that are difficult to locate* Useful for cables that are difficult to access* Robust construction for reliable functions* Independent current and voltage control on each burning level
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Product
VARIABLE TRANSFORMER DC POWER
208163V
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Motorized Variable Transformer Controlled Power Supply, P/N 208163VInput power: 208 VAC, 6 Amps, 3 PH, 60 HzOutput: 0 to 120 VDC, 16 Amps max.Ripple: 5%Manual control with variable transformerCircuit breaker / ON OFF on the 208 VAC, 3 PH input lineProtection fuse provided on the outputPOWER ON lightIndoor enclosure: 24H x 20W x 9DVoltmeter and ammeter are installed to monitor the output.All input/output connections are available inside the enclosureSystem includes main unit and remote assembly.
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Product
Polarization Extinction Ratio Measurement
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Rapid & Accurate measurement for PER, Angle, and Power. The most suitable light source for PER measurement.
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Product
Transformer Monitoring And AVR
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Power transformer is a basic equipment for the Transmission and Distribution Network and requires the application of powerful Monitoring and Control Systems. RTU Dt set is developed and intended for medium and large oil immersed Power Transformers with On-load Tap Changers (OLTC). The set provides safe, reliable, easy to use and cost effective power transformer condition monitoring and Automatic Voltage Regulation (AVR).
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Product
Injection Transformer
J2101A
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The injection transformer is presently the prevalent method for connecting the network analyzer to the circuit being tested, and is primarily used for control loop stability measurements. The goal of the transformer is to inject a signal into the control loop being measured, without impacting the performance of the loop. In order to accomplish this to a reasonable degree, The transformer is isolated and therefore is capable of floating on a high voltage, such as a Power Factor Corrector (PFC), which is often close to 400VDC. Measuring voltages that exceed the voltage rating of the FRA inputs require attenuation probes.
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Product
Injection Transformer
J2100A
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The injection transformer is presently the prevalent method for connecting the network analyzer to the circuit being tested, and is primarily used for control loop stability measurements. The goal of the transformer is to inject a signal into the control loop being measured, without impacting the performance of the loop. In order to accomplish this to a reasonable degree, The transformer is isolated and therefore is capable of floating on a high voltage, such as a Power Factor Corrector (PFC), which is often close to 400VDC. Measuring voltages that exceed the voltage rating of the FRA inputs require attenuation probes.
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Product
Transformer Performance Tester
JYW6100
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JYW6100 Transformer No-loads and On-loads tester power factor tester is suitable for loss testing of low power factory transformer such as amorphous alloy transformer, with high precision and data loc
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Product
Integrated Transformer Test Van
XD90
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Hangzhou Xihu Electronic Institute
The XD90 integrated modular power system testing vehicle provides an integrated yet flexible solution of preforming a wide selection of normal and specialty tests on power equipment. Designed with the effectiveness and efficiency of power testing in mind, this platform achieves the goal of “integration of functions” instead of just a “combination of instruments”. Not only it provides an abundant means of power testing, but with optimized device placement, operational convenience, and safety factor.
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Product
4ch, 1G to 30Gb/s Bit Error Ratio Tester (BERT) With Eye Checker
RB3004
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*Low cost continuous 4ch, 1G to 30Gb/s Bit Error Ratio Tester (BERT) and Eye Checker
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Product
Loss Measuring System for Transformers
LiMOS
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HIGHVOLT Prüftechnik Dresden GmbH
The transformer loss measuring system LiMOS is designed for highly accurate measurement of losses and other parameters required in the framework of routine and type testing of power transformers. The combined voltage/current sensors and the digital signal processing enable a very compact design with only one HV device per phase with smallest volume and footprint. The digitized and preprocessed signals are transmitted via fiber optic cable to the receiver unit (LiMO-MCSU).
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Product
MOTORIZED VARIABLE TRANSFORMER CONTROLLED POWER SUPPLY
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Motorized Variable Transformer Controlled Power Supply, P/N 18534PSInput: 460 VAC, 3 PH, 60 HzOutput: 0 to 250 VDC, 200 Amp max.Variable Transformer is used to vary the output. SCR controller is not used, as it generates harmonics.Input control is 0 to 3.6 VDC.Indoor enclosure.Output voltage and current feedback as 4/20 mA for PLC interface.All input/output connections are inside the enclosure
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Product
Transformer Preamplifier
SR554
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Stanford Research Systems, Inc.
The SR554 is a low-noise, transformer-coupled preamplifier optimized for source impedances between 0.05 Ω and 1 kΩ. With an input noise of only 0.1 nV/√Hz, the SR554 can be used in a wide range of low-noise applications.
