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Product
Power Transformers
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Power Transformers are used to convert voltages and isolate signals for functionality and safety. Our broad line of catalog and custom solutions range from mW to 5-10kW and are used in multiple topologies including flyback, forward, push-pull, resonant, LLC and phase shifted full bridges. Typical operating frequencies are between 80-500kHz but solutions can be adapted for greater than 1MHz operation.
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Product
Current Transformers
Sensors
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The Current Transformer (CT) is the sensor which measures the amount of current draw from the wire it is installed on.
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Product
Auto Transformers
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Osborne often recommends Auto Transformers in situations where reducing physical size of the transformer is advantageous. Auto transformers offer size advantages when compared to equivalent isolation transformers. Auto transformers provide lower levels of regulation than the equivalent isolation transformer. Osborne helps our clients accommodate for the loss of regulation while achieving the physical size (and cost) advantages of auto transformers.
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Product
Current Transformers
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The Institute of Electrical and Electronic Engineers defines a current transformer (IEEE Std C57.13) as “a transformer intended to reproduce in its secondary circuit, in a definite and known proportion, the current of its primary circuit with the phase relations substantially preserved”. Its primary winding is connected in series with the conductor carrying the current to be measured or to be controlled and its secondary winding is connected to the measuring, protection or control devices. Osborne designs and manufactures current transformers which are used for instrumentation applications, others which are used for power system synchronizing applications and others which are used in protection circuit application. They have been designed to meet specified current ratios, burden impedance and transformation errors.
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Product
Adjustable Isolating Transformers
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PeakTech Prüf- und Messtechnik GmbH
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.
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Product
Potential Transformers
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Osborne Potential Transformers (PT’s) are used to reduce higher system voltages to lower values that are appropriate for instrumentation and/or protection circuits. They have been designed to meet specified current ratios, and burden impedance at a specified transformation error. One area of unique Osborne expertise is in designing for phase shift when potential transformers are to be used for power measuring applications.
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Product
Instrumentation Transformers
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RR manufactures Transformer for Oil Test Set / Oil BDV Set. These are available in→ 25-0-25 KV→ 30-0-30 KV→ 40-0-40 KV→ 50-0-50 KV→ 60-0-60KV→ Higher ranges availableThese transformers are available in various models to suit various needs and budgets. We Specialize in manufacturing LOW WEIGHT TRANSFORMERS for AUTOMATIC OIL TEST SET MICROPROCESORS.
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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
DGA Monitor for Transformers
OPT100 Optimus™
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The Vaisala Optimus OPT100 DGA (Dissolved Gas Analysis) Monitor for Transformers gives you out of the box performance, completely eliminates false alarms, and offers the best long-term stable measurements of any device on the market – all with no maintenance. Spectral scanning provides selective gas measurement.
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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
Control Transformers
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ENTES control transformers ensure the safe operation of measuring devices with 24 VAC supply voltage for electical control panels. Input voltages of Control transformers are either fixed (230 or 400V) or selectable with taps (400;230+15-15).
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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 Transformers And Shunts
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Current transformers allow the different measuring devices to provide reliable and traceable data on the trends involving consumption and production processes in electrical installations. Especially designed to be installed quickly, easily and securely, meeting the most demanding expectations of today's market, covering a wide range of primary currents as well as multiple secondary outputs, both for AC and DC measurement.
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Product
Isolating Transformers
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PeakTech Prüf- und Messtechnik GmbH
Peaktech Isolating Transformers
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Product
RF Impedance Transformers
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Are designed and optimized to best deliver power into an impedance of 50 Ohms.
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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
Adjustable Isolating Transformers
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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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Product
Current Transformers
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A range of ring type current transformers suitable for primary currents from 1A-5000A with 1A or 5A secondaries. This standard range of measuring and protective current transformers is available as resin coated or tape wrapped.
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Product
Auxiliary Potential Transformers
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Osborne Auxiliary Potential Transformers (Aux PT’s) are used in utility and commercial industrial power systems. Osborne works with our clients to identify the safety advantages of using auxiliary potential transformers (Aux PT’s) to establish protection schemes for high voltage equipment. Aux PT’s step the voltage down to safer levels, normally below 600 V AC.
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Product
Transformers
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RR Enterprises provides all type of transformersSingle Phase and Three Phase upto 100 KVA.The transformers can be→ Air Cooled→ Epoxy Cast→ Oil CooledWe provide transformers in high voltage and low voltage. These are used for various industrial and research purposes.→ High voltage transformers for corona and static elimination.→ High voltage transformers for plasma welding.→ Special purpose high voltage transformers.→ High current transformers for metalissing plants.→ Special purpose high current transformers.
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Product
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
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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Product
High Current Transformers
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High Current Transformer is designed to elevate and check the temperature of the conductors at high current levels, in order to simulate the current loading conditions found in electrical circuits. High Current Transformer is designed as an open type transformer that uses the test object as its secondary coil or has 1 or 2-turn self secondary winding. The conductors cores' temperature depends on the short-circuit high current caused by the test object. According to the current going through the test object, the test temperature of the conductor will change. The loop temperature is measured by a thermocouple probe which is directly connected to conductor.
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Product
Standard Current Transformers
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Measurements International Ltd.
Single Range, Highest Permeability, Wide Measurement Range, Negligible Current Errors, High Accuracy.
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Product
Transformers/Baluns
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Macom Technology Solutions Holdings Inc.
At MACOM we offer multiple industry standard transformers used in wireless, aerospace and defense and communications applications. Available in a variety of surface mount, flat pack, and connectorized packages, our transformers and baluns are available in balanced and unbalanced versions and are characterized as 50 and 75 ohm impedance devices. Working closely with system design engineers to meet custom specifications, our proven technological expertise and innovative high quality, low cost manufacturing capabilities makes MACOM the partner of choice for some of the world’s leading infrastructure companies.
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Product
Rectifier Transformers
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Osborne’s Rectifier Transformers are used in conjunction with various rectification configurations to convert AC input to DC output(s). Key characteristics include regulation, transformer utilization and AC ripple. Osborne rectifier transformer designs are often engineered to operate in advanced rectifier circuit applications.
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Product
Current Transformers
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Contrel Elettronica s.r.l. Company
We can supply current transformers (measure transformers, protection transformers and double ratio transformers, with analog output) with the following accuracy classes: 0.1, 0.2s, 0.5s; 1; 3. A wide range of combinations is available in our standard range with specific versions available upon request (other ratios, specific frequency, class or load). They are equipped with sealable terminal covers as standard.
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Product
CONTROL TRANSFORMERS
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Our control transformers are robust, flexible in design and come with short lead time. Basically an ideal solution for control panel builders who need transformers in a hurry.
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Product
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.
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Product
BMS Transformers
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In large battery pack applications with daisy chain connections, the number of cells connected in series is very high, and the large voltage differences demand component-to-component isolation. The serial communication links between boards need to be isolated by transformer coupling circuits instead of capacitor coupling.





























