Potential Transformer
a type of intrument transformer enabling secondary connected metering.
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Telecom Transformers
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Our high-performance telecom transformers support multiple home phone line and power line network applications. These transformers have excellent THD performance, small footprints, and are designed to exceed industry standards. Single, dual, quad, six, octal and twelve transformer numbers are available.
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Phase Monitoring / Potential Selector Relay
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This is a phase failure relay suitable for 3 phase supplies. The relay is designed to automatically change over from the primary supply to the secondary supply if any phase of the primary supply has faulted.
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Linear Variable Differential Transformers (LVDTs)
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Whilst there are several ways to measure displacement, the Linear Variable Differential Transformer (LVDT) remains a popular transducer in most industrial applications. LVDTs initially were used as a means of taking dimensional readings in laboratories. They gained popularity in a wide variety of industrial monitoring and control applications, and whilst an LVDT is used to measure displacement the technology can be employed within other transducer types.
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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
Real-Time Online Monitoring to Detect and Analyze Potential Partial Discharge (PD) Signals and Insulation Faults using UHF, AE, and HFCT
PDMonitor
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Power Monitoring and Diagnostic Technology Ltd.
The PDMonitor, which utilizes Ultra High Frequency (UHF), Acoustic Emission (AE) and High Frequency Current Transformer (HFCT) sensors and is designed to conduct real time online monitoring to detect and analyze potential Partial Discharge (PD) signals and insulation faults before they lead to breakdown or catastrophic failure in power assets. The system provides the developing trend of the PD, when occurring, as alarms in real time, thus helping to predict the insulation degradation status of the asset, prevent sudden accidents, and provide an effective database for Condition-Based Maintenance (CBM) of power assets.
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Transformer Winding Resistance Meters
RMO TT Series
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The Tap Changer Analyzer & Winding Ohmmeter of the RMO-TT series is designed for winding resistance measurement of inductive objects, and for a tap changer analysis. The RMO-TT series is based on the state of the art technology, using the most advanced switch mode technology available today. The RMO-TT instruments are accurate (0,1%), powerful (up to 100 A) and still portable. The Instruments generate a true DC ripple free current with automatically regulated measurement and discharging circuit. RMO-TT instruments can perform a simple, quick and reliable transformer on-load tap changer condition assessment. This series of instruments enable measurements of a winding resistance in every tap position, current ripple values (percentage of a current drop during a tap change) and transition times during the tap changes. Problems with a connection, contacts, and selector/diverter switch operation (tap change with interruption) can be detected with these measurements.
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Transformer Monitors
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The Transformer Advantage is a precision temperature monitor for liquid-immersed power and distribution transformers. It is rugged, fully electronic and field configurable. With Transformer Advantage, users can extend transformer life, utilize maximum capacity and reduce maintenance costs.
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Product
Multiplexer For Transformer Testing
MUX-R
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Raytech Multiplexer MUX R is designed to drastically reduce cabling time and increase test performance. It is made to be used with Raytech Winding Resistance and Turns Ratio Meters. Any MUX R configuration can be easily controlled by a Winding Resistance Meter touch panel or by remote.
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Product
Mini Automatic Transformer Observation System
mini-ATOS
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The mini-ATOS, is a professional multifunctional power transformer and substation diagnostic system. This compact and intelligent instrument can perform many routine and advanced tests such as Winding Resistance (WR), Dynamic Resistance Measurement (DRM), Turns Ratio (TR), Frequency Response of Stray Losses (FRSL), Magnetic Balance, and other diagnostic parameters. With the built-in fully automatic multiplexer, only a one-time connection is required for nearly all functions, which saves a considerable amount of time. The portable, rugged case is perfect for use anywhere onsite or in a laboratory. It is specially designed for fast and easy measurements with the well-known high precision and quality of all Raytech instruments.
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High Impedance Transformers
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Osborne high impedance transformers are used to step-up, step-down and isolate voltages in single phase and three phase circuits. A properly designed high impedance transformer can be used an an equivalent to an isolation transformer connected in series with an inductor. The high impedance characteristic may be employed as a current limiting feature in both the primary and secondary circuity.
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Quasi Square Wave Constant Voltage Transformers
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Osborne Quasi Square Wave Constant Voltage Transformers are used to regulate output voltages for applications that have varying input voltages. When used with a rectifier conversion circuit, these units provide an elegant design approach to voltage regulation. Osborne achieves this innovative approach by partnering the constant voltage transformer with an auxiliary resonant capacitor winding. The result is a unique (though time honored) technology that offers reliability, performance, and cost advantages over other styles of voltage regulation.
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Product
Universal Mount Transformer
UET105
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UEi Test & Measurement Instruments
Universal Mount Control and Ringer transformer.
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Product
Instrument Transformers Tester
TE30
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Calmet Smart Calibration Devices
Electricity meters tester class 0.05 and 0.1. Three phase tester of current transformers and analyser of power network quality. It makes possible electricity meters testing on the site or in the laboratory.
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Product
Isolation Transformers
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Osborne’s Isolation Transformers are used to step-up, step-down and isolate voltages in single phase circuits. Isolation may be used to provide output circuit immunity from voltage spikes and noise (both common-mode and transverse-mode) present on the input system. The isolation can allow separate grounds on both the input and output sides of the transformer. Osborne also designs with a range of electrostatic shielding to provide several levels of noise immunity.
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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
Current Transformer
ST-40CT
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Standard Electric Works Co., Ltd
● 200/5A - 400/5A● 3-5V A● Class 1● Insulation 600V
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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
Software For Transformer Measuring Lite
T-Base Lite
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T-Base Lite is intended for users preferring simplicity over complexity of the Pro version. It is limited to the basic functions of USB interface, data import, data export, synchronization, and automatic firmware updates. Data can be exported in many popular data formats such as Excel, Word, text, .csv, .xml, Crystal reports, and .html. Measurements can be saved as archive files and imported into the database of the T-Base Pro version.
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Transformer Oil Tester
GTD-61A
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1. The GTD-61A Automatic Oil Tan Delta(OTD) & Oil dielectric loss tester is highly automated, allowing for the measurement of temperature rise, dielectric loss, and resistance in one go.
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Distribution Transformer Test System
DTTS Series
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Shanghai Jiu Zhi Electric Co., Ltd.
The DTTS Series Distribution Transformer Test System are self-contained test sets incorporating all features necessary for testing single and three phase distribution transformer.
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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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Transformer & Capacitor Testers
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*Quick and easy check for opens or shorts on transformers before energizing*Provides clear indications of open circuits, short connections and confirmation that the test results are OK*Tests overhead, pad-mount and other distribution transformers*Tests the primary and secondary sides of de‑energized transformers without disconnecting*Helps prevent line workers from installing a fuse on a shorted transformer*Automatic self-test feature*Magnet holds the tester in place while testing
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Transformer Ratio Meters
Three Phase Transformer Ratio Meter Standard Series
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TRT is based on state-of-the-art technology, using the most advanced technique available today. The test equipment can be used to test both single-phase and three-phase transformers, both with and without tap changer in accordance with the requirements of IEC 60076-1.
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Product
Current Transformer
ST-100CT
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Standard Electric Works Co., Ltd
● 1000/5A - 3000/5A● 10-15V A● Class 1● Insulation 600V
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Product
Split type AC Current Transformer
CTF-400T
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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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Synchro Control Transformer
SCT-RCT
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Computer Conversions Corporation
The SCT Series are low cost, miniature, solid state control transformers designed for military and industrial control applications. They will directly replace conventional electromechanical control transformers & thus provide digital control to existing analog servo systems.
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Cylinder Type Transformer Systems
YDTW\YDTCW Series
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Shanghai Jiu Zhi Electric Co., Ltd.
Conventional AC test transformers are especially designed for testing objects of medium capacitance. These systems are particularly suited for tests requiring stable voltage even if the load changes under voltage (corona, wet & pollution tests) or when the load is inductive (inductive voltage transformers).The possibility of stacking several of these transformer modules allows reaching very high voltage levels by keeping reasonable floor space.
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Epoxy Resin Silicon Rubber Outdoor Voltage Transformer
JDZW-10RG
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Beijing GFUVE Electronics Co.,Ltd.
Outdoor voltage transformer of the type JDZW-10 is single phase and epoxy resin silicon rubber insulated product, it's used for metering electric energy, voltage control and relay protection in 50/60HZ rated voltage less than 12kV electric system. It can be used for medial voltage AIS, or can be used for medial voltage switchgears. They can operate in all kinds of environments (such as wide range temperature (-50~70℃), high altitude, high humidity, high pollution or salt). This model JDZW-10 outdoor voltage transformer is also as voltage source to supply 220V voltage.
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Testing of Current Measuring Transformers
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All components from this category can be integrated into an existing current transformer test system. When selecting CT test components, both the type of converter to be tested and the required current are important.





























