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Reference Transformers
See Also: References, Reference Standards, Reference Antennas, Reference Decoders, Reference Jumpers, Reference Sources, Reference Transmitters, Acoustical References, Frequency References, Solar Reference Cells
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Current Transformers & Bushings
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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ETL Testing
Data is of utmost importance in digital systems. Protecting data, therefore, is of utmost importance. ETL refers to Extract, Transform, and Load. It supports the movement of data from its source to storage. With ETL testing we ensure that the data is not lost or corrupted during this movement. Huge volumes of data are collected in various formats and sources. The mapping process of these data is error-prone and can have quality issues.
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Digital to Synchro Converters
DSP
Computer Conversions Corporation
The DSP Series are high efficiency, AC Reference powered, Transformer Isolated, continuously updating “whole” Digital to Synchro Converters, designed for high performance Military and Industrial applications.
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Reference Meters
Whether standard or high precision, ThermoWorks handheld meters feature rugged housing and best-in class accuracy across a variety of temperature ranges. Choose from integrated systems or meters that accept multiple probes, single or dual channel meters, alarms or reference models. Perfect for BBQ or sous-vide applications, dairy processing and meat processing, pharmaceutical labs, concrete curing, health departments, and for line checks, critical control point management, and HACCP checklists.
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Frequency Reference
Quartzlock time and frequency standards offer a complete range of cost effective and low noise in both atomic controlled (rubidium oscillator) and GPS controlled (off-air) time and frequency reference, calibrators and standards. These acurate time and frequency references are used in telecoms, aviation, nautical and precision test and measurement enviroments.
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Separating Transformers
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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Control Transformers
Osborne’s Control Transformers are commonly used to step down primary circuit voltages to lower voltages to be used for control circuit applications. These units set the standard for premium, high performance, hand crafted control transformers. Your customers will appreciate your decision to work with the quality and reliability of Osborne Transformer’s control transformers.
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Reference Frequency Generator
MFCh
*Frequency reproduction accuracy ± 2 x 10 -9 *Output frequency 1 Hz - 10 MHz *Output pulse signal 1 kHz The MFC is designed to generate high-frequency pulse signals with a frequency of 1 kHz and a frequency in the range from 1 Hz to 10 MHz along two output lines. The MFC is designed to operate in measuring systems based on the VXIbus trunk. In the MFC, a rubidium frequency standard is used as a reference frequency source. Time to reach the mode when the power source of the rubidium standard is turned on, no more than 10 min
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Reference Thermapen®
Until now you would have spent hundreds more to get this level of accuracy in a NIST-Traceable standards thermometer. Our Reference Thermapen takes lab accuracy into the field. Each unit is factory calibrated at 5 test points and includes a UKAS accredited calibration certificate with test data. A true "system calibration" is performed matching its Platinum RTD sensor and the built-in electronics so all errors are included in the spec.
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Voltage References
Renesas' wide selection of voltage reference (Vref) circuits offer accurate and stable reference voltages unaffected by external influences such as variation in temperature, input voltage and time.
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Reference Meter
SB1300
Shenzhen Star Instrument Co., Ltd.
The SB1300 three-phase multi-function reference meter incorporates 32-bit floating point DSP, wide-range measuring and embedding industrial PC technologies. This model was the first approved by China National Institute of Metrology. Star Instrument has been granted the first manufacturing license for class 0.02 reference meters. Basic measuring range (phase voltage): 1V~480V, current measuring range: 1mA~120A; wide measuring range (phase voltage): 0.1V~1000V, current measuring range: 0.1mA~200A
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Transformer Protection
Schweitzer Engineering Laboratories, Inc.
Transformer protection products and systems provide complete primary and backup protection for all types of transformer faults. They are suited for use in utility-, industrial-, and commercial-scale power transformer systems.
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Voltage Transformer
Beijing GFUVE Electronics Co.,Ltd.
Are a parallel-connected type of instrument transformer. They are designed to present a negligible load to the supply being measured and have an accurate voltage ratio and phase relationship to enable accurate secondary connected metering.
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Current Transformer
ST-6RCT
Standard Electric Works Co., Ltd
● Primary Current Rating (Amp) : 400~600
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Reference Cells
Reference cell is used for measuring and setting the intensity of solar simulators for one sun (or other user desired) intensity condition. They are also used to calibrate the IV Measurement system photo-detector intensity to match the measured ISC to calibrated ISC.
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Reference Detect Switch
RDS Series 1.5” x 1.5” x 0.6”
*Connectorized Package *Internal/External Reference Detect Switch *Standard Internal TCXO (±2.5 ppm) *Optional Internal OCXO (±90 ppb)
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Transformer Monitors
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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Isolation Transformers
Provide line isolation, noise filtering and surge suppression for electronics in industrial, office and network environments.
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Reference Magnets
Series MT
The reasonably priced WUNTRONIC standard reference magnets offer the possibility in a simple way of being able to calibrate or to check magnet measuring instruments like Gauss Meter/Tesla Meter with the respectively accompanying probes in a defined magnetic field.
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Reference Solutions
As you seek solutions to evolving test challenges, Keysight Reference Solutions provide the right combination of hardware, software, and measurement expertise through programming examples highly optimized for specific applications. Reference Solutions show you how to get the most out of your test equipment, helping you achieve half the time to insight.
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Instrument Transformer
Our company has achieved a reputed niche in international market by manufacturing and exporting a great range of Instrument Transformer. Widely used in electrical, power generation and engineering sector for transforming voltage or current level, this equipment is in accordance with industry standards. Manufactured using excellent grade raw materials sourced from reputed vendor, Instrument Transformer is offered to clients in different technical specifications. We stringently test this instrument on varied standard parameters.
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Ethernet Transformers
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.
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Transformer Test Equipment
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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Power Transformer Monitoring
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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Transformer Monitoring
MTE offers a broad range of products and solutions for the online gas-in-oil monitoring of transformers (online DGA). With its individual and modular system components MTE provides the optimal customer oriented solution for utilities, industries and transformer manufacturers.
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High Impedance Transformers
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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Adjustable Isolating Transformers
PeakTech Prüf- und Messtechnik GmbH
The PeakTech 2235 is a 2 in 1 laboratory isolating transformer with integrated DC power supply, which was designed with the aspect of high safety requirements for use in research, science and repair. The device has a dual adjustable DC, AC output, which can also be used for constant voltage or current and offers high stability and performance. The output voltage or the output current can be read exactly on two separate 3-digit LED displays and the fixed output supplies a voltage of 5 V. The device is protected against damage by overload and short circuit by reliable overvoltage protection and can be placed in a 19 ”rack installed or used as a table device (“stand-alone”).
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Three-Phase Transformer Demagnetizer
DEM60C
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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AC Reference Generators
SR21
Computer Conversions Corporation
The SR Series are miniature, low cost AC reference generators designed to supply 26 or 115 volt excitation to synchros or resolvers in military and industrial control applications. They accept +/-15V DC and provide up to 5VA of transformer isolated output power. These converters are packaged in PC card mounting modules 2.6”x3.1”x1”H.
