Product

Auxiliary Current Transformers

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Osborne Transformer Corp.

Osborne Transformer Corp.

Osborne Auxiliary Current Transformers are often used to reduce system currents to lower values appropriate for instrumentation and/or protection circuits. The Aux CT’s are designed for specific current ratios and burden impedance with a known transformation error. Osborne’s units are built for high performance and longevity in the most demanding environments.

Product

High Frequency Transformers

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Osborne Transformer Corp.

Osborne Transformer Corp.

Osborne High Frequency Current Transformers operate at frequencies higher than 50/60 Hertz. Their purpose is to reduce high frequency system currents 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 high frequency current transformers are to be used for power measuring applications.

Product

Standard Voltage 37 Pin D-Type Connector Blocks for Pickering

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Pickering Interfaces Inc.

Pickering Interfaces Inc.

The connector blocks below are suitable to use with Pickering cards and modules that utilize a standard voltage 37-pin D-type connector.

Product

G.fast Transformers

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Pulse Electronics

Pulse Electronics

Our line of G.fast transformers are the preferred choice of engineers seeking the most reliable, functional isolation transformers for G.fast transmission. These compact transformers deliver excellent longitudinal balance and total harmonic distortion performance.

Product

Multiple High Resistance Standard

MHS

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Ohm-Labs, Inc.

MHS - Ohm-Labs, Inc.

*1 MEGOHM TO 1 TERAOHM*FULLY GUARDED*HIGH IMMUNITY FROM AMBIENT TEMPERATURE CHANGES*TRANSPORTABLEOhm-Labs' new Multiple High Resistance Standard maintains state-of-the-art resistance at levels above 1 megohm.

Product

Transformer Winding Resistance Tester

KRI 9310

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Kingrun Instrument Co., Ltd.

KRI 9310 - Kingrun Instrument Co., Ltd.

KRI 9310 adopt Kelvin four-wire testing method, which effectively eliminates the influence of the resistance of the test line on the test results. It can be able to increases the current to 10A by which can test extremely low resistance to 0.01 Ω(such as amorphous alloy, Copper-nickel, nickel-chromium-iron, iron-chromium-aluminum etc). For the tested objects with high resistance value (CT/PT), the instrument can extend the range to 20 kΩ，so the wide resistance test range enables KRI9310 can cover 80% of the power transformer products on the market and switchgear bus-bar cable etc. The power of the tester use the built-in rechargeable lithium battery that can test hundreds of transformers by one time charging.

Product

Transformer Winding Resistance Meters

TWA Standard Series

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Amperis sl

TWA Standard Series - Amperis sl

The TWA standard series instruments are designed to measure the resistance of six coils and simultaneously analyze the three-phase tap changer on load of the primary and secondary transformer coils (provided by model TWA40). This is done in a single cable configuration, with test currents up to 40A. Each transformer configuration has a special measurement algorithm that is optimized for rapid stabilization of test results. The TWA instruments generate a true DC current without ripple. Both current injection and magnetic circuit energy discharge are automatically regulated.

Product

Disciplined Frequency Standard

2975AR

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Novatech Instruments , Inc.

2975AR - Novatech Instruments , Inc.

The 2975AR contains a rubidium timebase and provide one 10 MHz, one 5 MHz and one Signal Generator output. The Signal Generator uses Direct Digital Synthesizer (DDS) technology and is programmable from 100Hz to 50 MHz using front panel controls or from an RS232 serial interface. The 2975AR can be disciplined by a 1pps input signal and provides a 1pps output signal. The 1pps input is typically provided by the GPS Frequency output from a device like a smart GPS receiver or antenna. The Novatech GPS1 Smart Antenna is available as an accessory to provide a complete turnkey solution.

Product

Test Equipment for Instrument Transformer

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Soken Electric Co. Ltd

Soken Electric Co. Ltd

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.

Product

Standard Step Tablets, Gray Scales & Density Reference Charts

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Applied Image, Inc.

Applied Image, Inc.

Standard Step Tablets, Gray Scales & Density Reference Charts are available in a wide variety of patterns, designs and sizes to fit a multitude of today’s application needs. Our gray scales and density patches are measured on a variety of NIST traceable instrumentation, including some of the most sophisticated microdensitometers available to the industry. They are imaged on either Photo Paper (RM) or Film (TM) to function for reflective or transmissive applications.

Product

Precision Multirange Current Transformer

P-2000

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TESCO

P-2000 - TESCO

The Type P-2000-2 Knopp Precision Current Transformer is useful for high and low voltage work in the laboratory, shop and field for testing, measuring, and calibrating. The excellent accuracy and the One-to-One calibrating feature make it admirably suited as a standard for calibrating work.

Product

Single-Phase Transformer Winding Resistance Meters

RMO-TD Series

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IBEKO Power AB

RMO-TD Series - IBEKO Power AB

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.

Product

Standard Voltage 37 Pin D-Type Connectors

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Pickering Interfaces Inc.

Pickering Interfaces Inc.

The connectors below are not compatible with Pickering products, however, are offered for developing a connection solution for use with other products.

Product

Standard Air Capacitor Set, 1pF To 1000pF

16380A

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Keysight Technologies

16380A - Keysight Technologies

The 16380A is a standard capacitor set consisting of four precision capacitors - 1pF (16381A), 10pF (16382A) 100pF (16383A), 1000pF (16384A). These capacitors are primarily used for performance tests of Keysight's 4-terminal pair LCR meters and impedance analyzers. Refer to the instrument's operation/service manual for the method of using these standards.

Product

Standard 1.08 (31.00) - 4.00 (114.00) Long Travel Bead Probe

BPLT-25C-4

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ECT

BPLT-25C-4 - ECT

Current Rating (Amps): 8Average Probe Resistance (mOhm): 8Test Center (mil): 100Test Center (mm): 2.54Full Travel (mil): 350Full Travel (mm): 8.89Recommended Travel (mil): 317Recommended Travel (mm): 8.05Mechanical Life (no of cycles): 500,000Overall Length (mil): 1,460Overall Length (mm): 37.08Full Travel Remark: Standard Spring: 400 mil / 10,16 mm, Alternate Spring 400 mil / 10,16 mm, High Spring: 400 mil / 10,16 mm, Ultra High Spring: 350 mil / 8,89 mm

Product

"Standard" RF Low Pass Filters

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Coaxial Dynamics

Coaxial Dynamics

Coaxial Dynamics "Standard" line of RF Low Pass Filters offers several models to choose from at CW power ratings of 100 watts and 200 watts. These filters cover operating frequencies from 88 MHz to 400 MHz with less than 0.5 dB insertion loss and attenuation levels of 40, 50 and 60 dB.

Product

Transformer Turns Ratio Meters

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Vanguard Instruments Company, Inc.

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.