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 Demagnetizer
DEM60C
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After a DC current test, such as winding resistance measurement, the magnetic core of a power or instrument transformer may be magnetized (remnant magnetism). It can cause various problems such as wrong diagnostics, inaccurate measurements on a transformer, inrush current at the start-up of a power transformer, or incorrect operation of protective relays due to magnetized CT cores. The best way to eliminate this source of potential problems is to use demagnetizer on the power or instrument transformer.The DEM60C is a fully automatic test instrument which performs three-phase transformer demagnetization. Transformer magnetic core demagnetization requires the application of AC current with magnitude decreasing to zero. DEM60C provides this AC current by internally changing the polarity of a controlled DC current. During the demagnetization process, the instrument supplies the current at decreasing magnitude for each step, following a proprietary algorithm. It can demagnetize single-phase and three-phase power transformers.The instrument can be connected to all three phases of a power transformer to be demagnetized, on either the primary or the secondary side. If a user selects specific vector diagrams for different types of transformers, DEM60C will run a specific demagnetization procedure for each transformer type (i.e., single phase, delta, wye/star, zig-zag.) without switching the test leads.DEM60C enables safe and efficient power transformer demagnetization. The instrument automatically regulates the injection of current and discharging energy from the inductance. During and after the operation, an intrinsically safe discharge circuit with an indicator rapidly dissipates the stored magnetic energy. The discharging circuit is independent of the power supply, which improves its reliability in case of loss of power.Test currents of up to 60 A DC enable efficient demagnetization of even the largest power transformers. Using a DV Win software, it is possible to control DEM60C externally.
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Product
Electronic Transformer Test System
UI2000-ET
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• Input characteristics analysis 1) Measure Vrms (10-300V) Lrms (0.04-4A) W, PF, Hz, total harmonic and 0-50 component of harmonic 2) Accuracy: ± (0.4%reading + 0.1%range + 1digit) • Output characteristics analysis 1) Measure lamp voltage (1-60V) lamp current (03-20A) lamp power, crest factor and oscillatory frequency 2) Accuracy: Class 2 • It can print without compute, and provide the communication port for PC
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Product
High Voltage Transformer
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RR manufactures HIGH VOLTAGE TRANSFORMERS for various Industrial Applications.
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Product
Transformer Demagnetization Tester
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Weshine Electric Manufacturing Co., Ltd
After a DC current test, such as winding resistance measurement, the magnetic core of a power or instrument transformer may be magnetized (remnant magnetism). It can cause various problems such as wrong diagnostics, inaccurate measurements on a transformer, inrush current at the start-up of a power transformer, or incorrect operation of protective relays due to magnetized CT cores.
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Product
Series Precision Multi-Ratio Current Transformers
PMT25090
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Power Measurement Technologies Inc.
Precision two-stage toroidal current transformers find application as the reference in determining the accuracy of instrumentation current transformers.
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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
Test Equipment for Instrument Transformer
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is desirable for measuring ratio errors and phase angles of low current (voltage) transformers used in electric devices, such as watt hour meters, smart meters, digital current meters, and transducers, etc.
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Product
Transformer Capacity Tester
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Weshine Electric Manufacturing Co., Ltd
In many industries, including health care, manufacturing, electrical contracting, higher education and corrections, reliable, high-quality transformers are essential for keeping operations running efficiently. Large facilities and industrial processes require substantial amounts of power, and they need dependable transformers to convert the energy coming from the power plant into a form they can use for their equipment and building utilities.
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Product
Instrument Transformer Calibrators
MRL 22
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UDEYRAJ ELECTRICALS PRIVATE LIMITED
Automatic measure of contact resistance. True 4 terminal measurement. μP operated, automatically saves results.
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Product
Power Transformer
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We are amongst the leading names in the industry, offering wide range of Power Transformer that are technically advanced in nature and have high strength. Our entire product line is dimensionally accurate in nature and requires low maintenance cost. They are thermostatically balanced in nature AND are easy to install.
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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
Current Transformer Testers
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Vanguard Instruments Company, Inc.
Performs CT excitation, current-ratio, polarity, and phase angle testsMeasures insulation resistance and winding resistance of the CT seconday windingsMeasures the CT's secondary burdenTest record header information including company, substation name, circuit ID, manufacturer, CT serial number, operator name, and test record-commentsBuilt-in 4.5-inch wide thermal printerPlot Multiple Saturation CurvesStores up to 128 CT test plans and 140 test records internallyUSB, Bluetooth, and USB Flash drive interface
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Product
High-Speed Transformer Test System
DU-7211
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Delta United Instrument Co., Ltd.
Inductance, Q factor, Leakage Inductance, AC Resistance, Capacitance, DC Resistance, Balance,Turn ratio, Open/Short check
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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 Polarity Tester
PMT20030
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Power Measurement Technologies Inc.
A hand held instrument for polarity identification of current, voltage and power transformers with an operable ratio range from 1:1 to greater than 5000:1.
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Product
FTIR – Fourier Transform Infrared
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FTIR stands for Fourier Transform Infrared spectroscopy. It is a powerful gas measurement technology for simultaneous measurements of multiple gases. The ability to detect and measure almost any gas, combined with the robustness and reliability of the technology, makes FTIR ideal for a wide variety of applications.
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Product
Transformer Winding Resistance Testers / TRT ? 2
TRT-2
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UDEYRAJ ELECTRICALS PRIVATE LIMITED
Fast measurement: Test current 0.02A to 2A DC, Digital display of resistance and test current.
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Product
Multiple Gas Transformer DGA
MINITRANS
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Based on the same core technology as the highly successful TRANSFIX the MINITRANS is a lower cost alternative, monitoring three key gases: Hydrogen, Acetylene and Carbon Monoxide (in ppm) plus moisture in oil (%RH & ppm). The measurement of these gases allows the user to detect a wide range of developing faults including arcing.
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Product
Current Transformer Test Set
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Vanguard Instruments Company, Inc.
The EZCT-2000C is Vanguard’s third-generation microprocessor-based current transformer test set. Designed specifically for CT testing, the EZCT-2000C has the following outstanding features that can greatly increase productivity and save time during the commissioning stage:
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Product
Power Transformer Testing
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HAOMAI Electric Test Equipment Co., Ltd.
Testing products for power transformers.
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Product
Portable Power Source - Power Transformer and Charger Manufacturer
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JYUE LII INTERNATIONAL CO., LTD.
A&V power transformer supplies and manufactures certified portable power source and charger with industrial UL / cULus / CB / CE / TUV & ISO 9001:14001 certified electrical products and manufacturing facilities based in Taiwan. Portable Power Source Includes C Series, H Series, J Series, L Series, M Series, P Series, Q Series, W Series, Power Bank Series Portable Power Source
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Product
Distribution Transformer Tester
ADOC-3
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The ADOC-3 is an equipment that has been designed to test distribution network transformers from 5 kVA to 3MVA.
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Product
Extinction Ratio Meter
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Shenzhen Golight Technology Co.,Ltd
The extinction ratio meter can achieve accurate measurement of up to 40dB PER dynamic range. The instrument is precisely controlled by micro-machines, which can quickly and accurately measure the extinction ratio, polarization angle and optical power of the polarization-maintaining device.
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Product
Split Core Current Transformers
LZCK-55
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Beijing GFUVE Electronics Co.,Ltd.
Outdoor waterproof current transformers are applicable for AC power system 35kV and measurement of current of power supply equipment below 10KV also can be used for microcomputer protection. This type of current transformer employs imported silicon steel which with high permeability as magnetic material, has the characteristics of Small magnetic circuit loss and can be split, its semicircular core and secondary windings employ high quality epoxy resin vacuum, casting in plastic-case(ABS or PC) which is flame retardance anti-moisture, stable performance, no maintenance.
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Product
Grounding Transformers [ZN (Zigzag), ZNyn, YNd(open), Ii0]
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Grounding Transformers are designed for providing an artificial neutral point for ungrounded three phase power systems. During the line-to-ground faults, grounding transformers provide an easy path to ground faults to limit the fault currents and transient overvoltages.
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Product
Separating Transformers
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Is a transformer in which the primary and secondary windings are galvanically/electri- cally separated with basic insulation. Isolating transformer: A separating transformer with a protective partition between the primary and secondary windings.
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Product
Transformers (Murata Power Solutions Products)
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Murata transformers are ideally suited to high-frequency designs. The products come in a variety of industry-standard packages and can be used in applications where impedance matching, voltage conversion, isolation and current sensing may be required.
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Product
Transformer Testers
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*Quickly tests deenergized power distribution transformers*Briefly energizes the transformer and takes a snapshot of the condition by measuring the voltage, current and power factor of the test signal*Tests overhead, pad-mount and distribution transformers*Audible alarm confirms successful test*Improve SAIDI statistics by quickly testing and getting the transformer back in service*Auto self-test performed with every test*Compact, lightweight and easy-to-use
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Product
PD Free Test Transformer
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Wuhan Fanke Transformer Manufacture Co., LTD
PD Free Test Transformer
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Product
Ethernet Transformers
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Pulse’s Ethernet transformers are RoHS compliant and qualified at major PHY suppliers. 100/1000/2.5G/5G/10GBASE-T Ethernet transformer modules are optimized for all major LAN transceivers. All modules provide electrical circuit isolation that meets IEEE 802.3, while maintaining signal integrity needed for the most demanding applications.
