Transformer Comparators
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Product
XDSL Transformers
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We manufacture and supply an extensive line of high-performance xDSL transformers, including ADSL, VDSL, Vectored VDSL, VDSL Hybrid, VDSL Line, G.fast, HDSL2 and G.SHDSL transformer and chipsets.
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Product
Monopulse Comparators
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PMI offers a variety of Monopulse Comparators with a wide range of options and custom specified hardware for beamforming antenna applications up to 21.5 GHz.
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Product
Field-of-View Systems - VisionGauge Digital Optical Comparators
300 Series
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The 300-Series VisionGauge Digital Optical Comparator Field-of-View Systems are extremely cost-effective systems that are ideal for smaller parts. Automatically compare parts to their CAD data with our proprietary CAD Auto-Align and CAD Auto Pass/Fail tools, in seconds. Instantly computes and displays deviations-from-nominal and out-of-tolerance areas. No operator-to-operator variation. Extremely fast & easy-to-use! Needs no overlays, templates or Mylars. Full automated measurement capability
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Product
PPS Clamp Transformer
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PPS2 provides power supply to the PD detectors installed on HV cable when low voltage AC power is not available. The PPS2 takes the required power directly from the High Voltage power line under monitoring by means of units clamped on the HV power cable(s).PPS2 is designed to withstand High Voltage line failure events such as temporary overload and short circuit conditions. An internal detection and self limiting circuitry guarantees that PPS2 and the connected equipment survives in case of such events.
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Product
Transformer Winding Resistance Meter
10A
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*10A DC continuous current in 4 ranges of 0.01A, 0.1A, 1A and 10A.*4 ½ digit display for higher resolution.*Dual channel measurement.*Suitable for operation in energized switchyard conditions.*Specialized protection circuits for suppression of inductive voltage kickback.*SMPS based - lightweight and portable.
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Product
Automatic Transformer Tester
SS3250 / SS3252 / SS3302
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Automatic transformer test instrument is a precision test system, designed for transformer production line or incoming/outgoing inspection in quality control process, with high stability and high reliability. With the enhanced capability in turn ratio measurement, they can solve the measuring problems of low coupling coefficient, transformer's turn ratio and turn number with more precise measurement.
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Product
Three-Phase Transformer Winding Resistance Meters
TWA Standard Series
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When it comes to winding resistance measurement on three-phase power transformers and autotransformers, TWA Standard series offers some of the most technically advanced instruments with LCD display in the market. Both models are capable of testing six transformer windings with a one-time cable connection, as well as three-phase automatic transformer demagnetization. The stored magnetic energy is safely automatically discharged at the end of the test. The built-in tap changer control unit enables automated test mode, where the instrument operates the tap changer without operator input and records winding resistance results based on pre-selected stabilization criteria. This option makes the operator’s job significantly easier.Both models can output test currents from 5 mA to 25 A DC for the purpose of winding resistance measurement. TWA40D has a special test mode for checking the synchronization of on-load tap changers with three phases simultaneously tested in parallel, in which the total test current can rise to up to 40 A DC.TWA40D has additional advantages when it comes to non-intrusive tap changer analysis. The unique DVtest method 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, simultaneously with the measurement of tap changer motor current which helps with the detection of 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 on three phases simultaneously. It can also be performed as an additional test simultaneously with the winding resistance test in all tap positions.An additional unique advantage of TWA40D 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 shorten the total testing time – for example, it enables the operator to perform 33 measurements instead of 99 on a tap changer with 33 tap positions.The test leads for TWA three-phase transformer winding ohmmeters are interchangeable with the TRT turns ratio testers, which means that both sets of tests can be performed with a single test lead connection to the power transformer terminals.
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Product
Transformer Turns Ratio Meter
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International Biological Laboratories
Transformer Turns Ratio Meter is compact in size and is capable to measure actual turns ratio of different types of transformers like Distribution, Power, CT, PT, Auto-transformers, Control & Measuring transformers etc.
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Product
Differential Transformer Type Extensometers
DT Series
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ISO Class 1 Compliant Differential Transformer Type Extensometers The ISO 6892-1 standard for tensile testing of metallic materials prescribes Class 1 or higher extensometers, and JIS Z2241 prescribes Class 2 or higher extensometers when measuring withstanding pressure. The DT series includes Class 1 compliant differential transformer type extensometers, which can be used to implement test methods compliant with metal tensile test standards.
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Product
Transformer Turns Ratio Meters
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Vanguard Instruments Company, Inc.
The ATRT-01 S3 is Vanguard’s fourth generation, micro-processor based, single phase, automatic transformer turns-ratio tester. The ATRT-01 S3 uses the IEEE C57.12.90 measuring method to determine the transformer turns-ratio. The transformer turns-ratio is determined by precisely measuring the voltages across the unloaded transformer windings. The ATRT-01 S3’s measuring circuitry self adjusts before each measurement to ensure turns-ratio accuracy. Two selectable test voltages, 4Vac and 40Vac, offer flexibility in testing different types of transformers.
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Product
32-Bit, 4-Ch Encoder/Counter With Preload Position Compare FIFO PCIE Card
PCIE-1884
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Four 32-bit programmable encoder countersQuadrature (X1, X2, X4), dual pulse (CW/CCW), signed pulse (OUT/DIR) modesProgrammable trigger output (preload FIFO) for position comparisonSingle-ended or differential inputsDigital filter with selectable values2,500 VDC isolation protection for all signals
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Current Transformers & Bushings
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Measurements International Ltd.
AC Current Transformer, Reference Standard for the Calibration of Precision CTs, Currents as high as 10,000 A, Portable with carrying handle for smaller CTs, Wheels on heavier CTs, Passive or Electronically Aided Compensation.
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Product
IEC Potential Transformer Burdens
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• Burdens for IEC specifications rated for various input voltages available • 2.5 to 207.5 VA at 0.8 PFIEC Potential Transformer Burdens
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Product
Transformer Turns Ratio Tester
CXBC-901
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Shenzhen Chuangxin Instruments Co., Ltd.
Transformer Turns Ration Tester is applied to measure the voltage ratio and group testing of the three or single phase transformer. All the test results could be printed by the micro printer or saved in the tester.
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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
Transformer Winding Resistance Meters
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Vanguard Instruments Company, Inc.
The TRM-40 is Vanguard Instruments’ third generation transformer winding resistance meter. The TRM-40 is designed specifically to measure DC resistance values of transformer windings, rotating machine windings, or any dc resistance of an inductive device.
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Product
Transformer Testing Panel
VTTP
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Capable to Test Up to 25 MVA (Other Ranges are Available On Request). Useful for No Load Test (O.C.), Load Test (S.C.), DVDF Test HV Test of Transformer. Mains indication by R,Y,B indication Lamp. Over voltage, over current protection.
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Product
Current Transformer
ST-12RCT
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Standard Electric Works Co., Ltd
● Primary Current Rating (Amp) : 800~2000
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Product
Transformer Ratio Meters
TRM-200
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Three phase lead switching network • Excitation current meter Accessories: Range Extender 1:5.
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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
High Voltage Transformers
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We, NMC, are engaged in manufacturing AC/DC High Voltage Transformers ranging from 5kv upto 150Kv having current capacity from 10mA to 200mA AC/DC in Air cooled or Oil Cooled type as per the customer requirement.
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Product
Split type AC Current Transformer
CTS-600
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MULTI MEASURING INSTRUMENTS Co., Ltd.
*5A output for metering application.*Short circuit switch for secondary output is provided for safe operation.*High accurate transformer for the application of first class meter.*Easy to install by metal fitting.
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Product
Elcometer Surface Comparators
125
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Using the Elcometer 125 surface comparators as a reference the blasted profile can be compared to the four reference profile grades in each comparator. Profiles are recorded in microns.
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Product
Vertical Space Transformers
ST
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The Space Transformer (ST) is an integral part of the probe card, utilized between the probe head and the PCB. Nidec SV Probe provides a wide variety of space transformation options including: • WST™ (Wired Space Transformer) • MST™ (Modular Space Transformer) • MLC (Multi-Layer Ceramic) • MLO/Mini-PCB (Multi-Layered Organic) • Multi-Site MLO Reflow of Package Substrate • MLC with MLTF to 50µm PitchOne of the main priorities for Nidec SV Probe is the internal development and manufacture of our own probe card components. We now offer in-house manufactured space transformer technologies with shorter lead time and competitive pricing. Contact your sales representative to learn more about our internally manufactured STs or any of our other ST technologies.
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Product
Current Transformer
ST-3RCT
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Standard Electric Works Co., Ltd
● Primary Current Rating (Amp) : 20~300
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Product
Automatic Transformer Observation System
ATOS
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Raytech – The World leader in design and manufacturing of high-quality precision measuring instruments and systems, offering flexibility and versatility. Our modular Automatic Transformer Observation System (ATOS) allow you to create a unique and custom solution for any application. ATOS is designed to drastically reduce measuring time and increase test performance, without losing accuracy compared to individual test instruments. With the choice of up to three Multiplexers (primary, secondary, and tertiary), three Winding Resistance Meters, each with three maximum current range options (up to 15A, 50A, or 100A), Turns Ratio, and Integrated power security and safety panel (ISU R), Raytech can create a system with your needs and budget in mind.
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Product
Peripheral Level Transformer
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The Peripheral Level Transformer (PLT) is an adapter module that increases the voltage of the analog inputs&outputs for easy communication with external devices. It is connected between the instrument and the periphery.
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Product
Single-Phase Transformer Winding Resistance Meters
RMO-TD Series
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Using the most advanced switch-mode technology available today, the RMO-TD series is ideal for winding resistance measurements of inductive objects. Transformer resistance meters and tap changer analyzers are perfect for testing:transformer windings (power transformers, distribution, autotransformers),all types of tap changers,generators,electrical motors,high-current busbar joints,cable splices,and welding joints.In addition, transformer demagnetization can also be done with all RMO-TD instruments.The RMO-TD series contains 3 models, with maximal test currents from 25 A (RMO25TD) to 60 A (RMO60TD).The three independent voltage sense channels enable testing of three windings in series. This enables measurements of winding resistance in every tap position of an on-load tap changer without discharging between the tests.All RMO-TD transformer resistance meters have a built-in tap changer control unit. It enables remote control of on-load tap changer (OLTC) directly from the device. In order to make the most out of this feature, DV-Win software is included which can be programmed 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.
