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Three Phase Transformer Ratio Meter
*Three phase lead switching network. *Excitation current meter Accessories: Range Extender 1:5
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Transformer Ratio Meters
Handheld Turns Ratio & Winding Resistance Tester TWR-H
TWR-H is a handheld, battery operated, fully automatic test set specially designed for turns ratio, phase shift, excitation current and winding resistance measurements of transformers. It can also perform demagnetization of these transformers. Transformer turns ratio is determined by applying AC voltage across high voltage winding, accurately measuring AC voltage across the corresponding unloaded transformer winding, and then displaying the ratio of these voltages. User can enter a transformer’s nameplate voltages, so that turns ratio deviation can be calculated. This feature eliminates any error otherwise caused by an operator’s manual calculation. TWR-H compares measured turns ratio with the nameplate ratio and prints out the % of error for each test. Transformer winding resistance is determined by injecting DC current through a winding, accurately measuring DC voltage across the winding, and then calculating resistance as the ratio of voltage and current. The device generates true DC ripple-free currents. Both the injection of the current and the discharge of energy from transformer magnetic circuit are automatically regulated.
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Turns Ratio Testers
TRT Standard Series
When it comes to choosing a transformer turns ratio tester, TRT Standard series offers some of the most advanced instruments with LCD display out in the market. Each model measures transformer excitation current and phase shift performs automatic vector group detection and magnetic balance on three-phase transformers and three-phase autotransformers. Furthermore, they have a built-in true three-phase power source. Because of that, TRT Standard instruments can test transformers with special configurations, such as phase-shifting, rectifier, arc-furnace, traction transformers, etc.The instruments can output test voltages from 1 V AC to 250 V AC, depending on the chosen model. High test voltage of 250 V AC provides more accurate turns ratio testing compared to other turns ratio testers on the market and extremely low test voltage of 1 V AC enables turns ratio verification of current transformers.TRT Standard series consists of:TRT03 Models (TRT03A, TRT03B, TRT03C) – single-phase voltage up to 100 VTRT3x Models (TRT30A, TRT30B, TRT30C, TRT33A, TRT33B, TRT33C) – single and true three-phase voltage up to 100 VTRT63 Models (TRT63A, TRT63B, TRT63C) – single and true three-phase voltage up to 250 VMore about models differences can be found under the downloads tab, in brochures and comparison sheets.A user can create test templates using the DV Win software and store them in the PC’s memory for later use when in the field.TRT Standard series models have a built-in tap changer control unit. Consequently, it enables remote control of an on-load tap changer (OLTC) directly from the tester. In order to make the most out of this feature, the DV-Win software can be programmed to do everything automatically – running turns ratio tests, changing OLTC tap positions and saving results. This option, especially in combination with test templates, significantly facilitates and shortens the turns ratio testing time.
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Load Cell Power Supply
MODEL PSMR
The PSM-R is a self contained AC power bridge excitation supply. This device consists of a low interwinding capacitance AC transformer and a high stability adjustable linear regulator designed specifically for driving transducer bridges. DC excitation is adjustable from 4 to 15 volts output and is capable of supplying 0 to 150 mA in output current. It features remote sensing to eliminate line drop errors and very low noise. It can also be used as a high quality voltage source or reference in many applications. AC input requirements are 105 to 125 VAC at 60 Hz.
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PCB GPTC03, 10 mV/g, IEPE, Accelerometer, General-Purpose Vibration Sensor
780988-01
The PCB GPTC03 helps you acquire sound and movement data with supported PXI Sound and Vibration Modules, C Series Sound and Vibration Input Modules, and USB-based Sound and Vibration Devices. This sensor uses the … Integrated Electronics Piezo-Electric (IEPE) current excitation. The PCB GPTC03 features a sensitivity range of 10 mV/g and requires a low-noise coaxial cable.
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Temperature Monitors
SIM923A
Stanford Research Systems, Inc.
The SIM923A has selectable 10 µA and 1 mA current sources to provide sensor excitation. Sensor resistance is determined ratiometrically with a half-bridge circuit consisting of the sensor and an internal reference resistor.
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CT PT Tester
HTCT-300 / 357
Wuhan Huatian Electric Power Automation Co., Ltd.
Measurement of current voltage transformer excitation characteristics, excitation parameters, turns ratio, polarity coil resistance, etc.
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PCB Triaxial Accelerometer, 1000mV/g, ICP®(IEPE), 0.5Hz-3kHz
784815-01
The PCB Miniature Triaxial Accelerometer helps you acquire sound and movement data with supported PXI Sound and Vibration Modules, C Series Sound and Vibration Input Modules, and USB-based Sound and Vibration Devices. This sensor uses the Integrated Electronics Piezo-Electric (IEPE) current excitation. The PCB Miniature Triaxial Accelerometer features a sensitivity range of 1000 mV/g and requires the PCB lightweight cable with 4-socket plugs.
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NI-9226, 8-Channel, 400 S/s Aggregate, 0 Ω to 4000 Ω, PT1000 RTD C Series Temperature Input Module
783864-01
8-Channel, 400 S/s Aggregate, 0 Ω to 4000 Ω, PT1000 RTD C Series Temperature Input Module - The NI‑9226 is a resistance temperature detector (RTD) input module. You can configure the NI‑9226 for two sample rate modes: high sample rate or high resolution. The NI‑9226 is compatible with 3‑ and 4‑wire RTD measurements, and it automatically detects the type of RTD (3‑ or 4‑wire) connected to the channel and configures each channel for the appropriate mode. The module provides per-channel current excitation. The NI‑9226 features calibration and includes a channel‑to‑earth ground double isolation barrier for safety, noise immunity, and a high common-mode voltage range.
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Photoelectric Direct Reading Spectrometer
TY-9610
Wuxi Tianmu Instrument Technology Co., Ltd.
1, Optical SystemStructure: Pa type - RungeRaster: Radius of curvature: 750mmIncident slit width: 20 μ mExit slit: high-precision photolithography of the entire slit, according to different elements set up 30u-75u slit width.Detector: Photomultiplier tube ( PMT ) detector2, all digital excitation light source1. Fully digital intelligent composite light source DDD technology, which can automatically adjust the excitation parameters of light source according to the excitation characteristics of different materials, and truly realize full digital control. 2. Using the all-digital control mode, high-energy pre-combustion technology ( HEPS ), ultra-stable energy release stimulates the sample in an argon atmosphere. 3. The application of all-digital light source improves the measurement accuracy and similarity of the sample, improves the sample excitation speed, improves the spark stability, and makes the sample have better reproducibility. The maximum discharge current reaches 400A .
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sbRIO-9219, Non-Enclosed, 100 S/s/channel, 4-Channel C Series Universal Analog Input Module
781027-01
Non-Enclosed, 100 S/s/channel, 4-Channel C Series Universal Analog Input Module - The sbRIO‑9219 is designed for multipurpose testing. With the sbRIO‑9219, you can measure signals from sensors such as strain gages, resistance temperature detectors (RTDs), thermocouples, load cells, and other powered sensors, as well as make quarter-bridge, half-bridge, and full-bridge current measurements, with built-in voltage and current excitation. Each channel is individually selectable, so you can perform a different measurement type on each channel. Non-enclosed modules are designed for OEM applications.
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Transformer Ratio Meters
TRM-200
Three phase lead switching network • Excitation current meter Accessories: Range Extender 1:5.
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PCB High Sensitivity, 100mV/g, ICP® (IEPE) Accelerometer
780989-01
The PCB HSTC33 helps you acquire sound and movement data with supported PXI Sound and Vibration Modules, C Series Sound and Vibration Input Modules, and USB-based Sound and Vibration Devices. This sensor uses the Integrated Electronics Piezo-Electric (IEPE) current excitation. The PCB HSTC33 features a sensitivity range of 100 mV/g and requires a low-noise coaxial cable.
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Current Transformer Analyzer
CT Analyzer
Current transformer testing in a multifunctional instrument performing excitation, ratio, polarity and winding resistance tests on current transformers as well as burden impedance measurement.
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Turns Ratio Testers
TRT Advanced Series
TRT Advanced series is the newest DV Power solution for transformer turns ratio measurement. Besides its main application, each turns ratio tester from this series also measures transformer excitation current and phase shift. Furthermore, all models perform automatic vector group detection and magnetic balance on three-phase transformers and three-phase autotransformers. They have a built-in true three-phase power source. For that reason, they can test transformers with special configurations, such as phase-shifting, rectifier, arc-furnace, traction transformers, etc.The instruments can output test voltages from 1 V AC to 500 V AC, depending on the model. With the highest test voltage 500 V AC, TRT500 provides the most accurate turns ratio testing of power transformers used in power generation and transmission. The output test voltage of TRT500 can be boosted to 5 kV AC using the external CVT20 extension transformer. This application is specially designed for testing turns ratio of capacitive voltage transformers. The other three models, TRT400, TRT250, and TRT100 can output up to 400 V, 250 V, and 170 V respectively. The low test voltage of 1 V AC enables turns ratio verification of current transformers.TRT500 is equipped with a large 10.1” graphical touch screen display. Other models, (TRT400, TRT250, TRT100) have 7” graphical touch screen display. Besides making the interface much more user-friendly compared to older turns ratio testers, it also brings certain options that were previously available only with DV-Win software. The most important are test templates and automatic test mode. Users can simply create test templates, store them in the instrument’s memory, and load when in the field with just a few clicks.This turns ratio test set, as well as all other DV Power turns ratio testers, has a built-in tap changer control unit. It enables remote control of an on-load tap changer (OLTC) directly from the instrument. In order to make the most out of this feature, the instrument can be programmed to do everything automatically – running turns ratio tests, changing OLTC tap positions, and saving results. This option, especially in combination with test templates, significantly facilitates and shortens the turns ratio testing time. Automatic test mode minimizes human errors, which makes the measurement more reliable.
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Pt RTD Temperature Monitor
SIM923
Stanford Research Systems, Inc.
The four channels in the SIM923 have independent, stable 1 mA current sources to provide sensor excitation. Sensor resistance is determined ratiometrically with a half-bridge circuit consisting of the sensor and an internal reference resistor.
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Intelligent A/D I/O Unit
RAD242
Model RAD242 is an intelligent, two-differential-channel, 24-bit analog-input interface unit that includes a Delta-Sigma A/D converter. The converter has a digital output filter with adjustable notch frequency from 10 Hz to 2000 Hz. The pod also has 13 bits of digital input/output. A precision 10 VDC voltage that can be used for transducer excitation is available at connector pin 5. As much as 60 mA current can be provided. It is packaged in a NEMA 4 enclosure for remote installation in harsh environments. RAD242 also provides a user-definable interrupt input and counter/timer input. An optional RAD Firmware Development Kit is available if you wish to use those user-programmable input lines or to develop a custom program.
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PCB IMID01, 100 mV/g, IEPE, 2-Pin, Accelerometer, Industrial Vibration Sensor
784175-01
The PCB IMID01 is an industrial Vibration Sensor designed for permanent installations. This sensor helps you acquire sound and movement data with supported PXI Sound and Vibration Modules, C Series Sound and Vibration Input Modules, and USB-based Sound and Vibration Devices. The PCB IMID01 features a sensitivity range of 100 mV/g and uses the Integrated Electronics Piezo-Electric (IEPE) current excitation. The sensor supports the IMI Industrial Accelerometer Cable as well as the MIL2M-Breakout Cable.
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Instrument Transformer Calibrators
CTPT 81
UDEYRAJ ELECTRICALS PRIVATE LIMITED
Tests: Ratio error. Excitation current and curve. Polarity CT / PT TESTER
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Magneto-inductive Testing
MAGNATEST D-HZP
Foerster Instruments, Incorporated
The MAGNATEST D-HZP by FOERSTER is the ultimate magneto-inductive test instrument: the fully automatic system tests materials for their properties. It operates in single coil absolute mode, making a comparator coil unnecessary. The combination of high excitation currents and complex evaluation electronic equipment detects even very small structural discrepancies. The MAGNATEST D-HZP also provides comprehensive options for documenting test results, such as test piece statistics, histogram, and test data export, which are displayed clearly on the large color display.
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PCB IMIC01, 100 mV/g, 2-Pin, Accelerometer, Industrial Vibration Sensor
780985-01
The PCB IMIC01 is an industrial Vibration Sensor designed for permanent installations. This sensor helps you acquire sound and movement data with supported PXI Sound and Vibration Modules, C Series Sound and Vibration Input Modules, and USB-based Sound and Vibration Devices. The PCB IMIC01 features a sensitivity range of 100 mV/g and uses the Integrated Electronics Piezo-Electric (IEPE) current excitation. The sensor supports the IMI Industrial Accelerometer Cable as well as the MIL2M-Breakout Cable.
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Current Transformer Tester
CTT
The CTT is designed to test the current transformer ratio, Phase shift, Polarity, Excitation, Saturation, Winding resistance and Insulation resistance using the voltage method in compliance with ANSI/IEEE C57.13.1 and IEC 60044-1 standards, where voltage is applied to the secondary X terminals of the current transformer.
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Load Cell Amplifier Signal Conditioner with Removeable Terminals
MODEL LCA-RTC
The LCA-RTC Module provide low-cost, dedicated signal conditioning for a single bridge type load cell or torque sensor. Model LCA-RTC comes with removable screw-clamp terminal connectors, which accept wires without soldering.On- board jumper selections include sensitivities from 0.5 mV/V to 10 mV/V, bandwidths from 100 Hz to 30 kHz, and amplified outputs of 0 to ±5V, 0 to ±10V, 0-16 mA, 0-20 mA or 4-20 mA. Zero and span adjustments are via precision 25-turn low-tempco metal film potentiometers.The units can be operated next to the sensor with 4-wire hookup or at distances up to 1 km (3300 feet) with 6-wire hookup. An onboard 87.325 kΩ resistor allows easy shunt calibration at the push of a button. Provision is also made for a user-furnished calibration resistor. Power requirements are 11.8 to 26V DC with load currents from 10 to 60 mA, the latter applying when the unit provides 10V DC excitation to a 350 ohm load cell and delivers a 20 mA analog output.
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NI-9219, 100 S/s/channel, 4-Channel C Series Universal Analog Input Module
785994-01
100 S/s/channel, 4-Channel C Series Universal Analog Input Module - The NI‑9219 is designed for multipurpose testing. With the NI‑9219, you can measure signals from sensors such as strain gages, resistance temperature detectors (RTDs), thermocouples, load cells, and other powered sensors, as well as make quarter-bridge, half-bridge, and full-bridge current measurements, with built-in voltage and current excitation. Each channel is individually selectable, so you can perform a different measurement type on each channel.
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NI-9216, 8-Channel, 400 S/s Aggregate, 0 Ω to 400 Ω, PT100 RTD C Series Temperature Input Module
785186-01
8-Channel, 400 S/s Aggregate, 0 Ω to 400 Ω, PT100 RTD C Series Temperature Input Module - The NI‑9216 is a resistance temperature detector (RTD) input module. You can configure the NI‑9216 for two sample rate modes: high sample rate or high resolution. The NI‑9216 is compatible with 3‑ and 4‑wire RTD measurements, and it automatically detects the type of RTD (3-‑or 4‑wire) connected to the channel and configures each channel for the appropriate mode. The module provides per channel current excitation. The NI‑9216 features calibration and includes a channel‑to‑earth ground double isolation barrier for safety, noise immunity, and a high common-mode voltage range.
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Single Phase Transformer Ratio Meter
*Ideal for VT testing*Bushing Current Transformers (BCTs)*Higher resolution*Excitation current meter
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NI-9216, 8-Channel, 400 S/s Aggregate, 0 Ω to 400 Ω, PT100 RTD C Series Temperature Input Module
783863-02
8-Channel, 400 S/s Aggregate, 0 Ω to 400 Ω, PT100 RTD C Series Temperature Input Module - The NI‑9216 is a resistance temperature detector (RTD) input module. You can configure the NI‑9216 for two sample rate modes: high sample rate or high resolution. The NI‑9216 is compatible with 3‑ and 4‑wire RTD measurements, and it automatically detects the type of RTD (3-‑or 4‑wire) connected to the channel and configures each channel for the appropriate mode. The module provides per channel current excitation. The NI‑9216 features calibration and includes a channel‑to‑earth ground double isolation barrier for safety, noise immunity, and a high common-mode voltage range.
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sbRIO-9218, Non-Enclosed, 24-Bit, 51.2 kS/s/channel, 2-Channel C Series Universal Analog Input Module
783362-02
Non-Enclosed, 24-Bit, 51.2 kS/s/channel, 2-Channel C Series Universal Analog Input Module - The sbRIO‑9218 helps you perform multipurpose testing. With the sbRIO‑9218, you can measure signals from sensors such as strain gages, resistance temperature detectors (RTDs), thermocouples, load cells, and other powered sensors. You also can use the sbRIO‑9218 to perform quarter-bridge, half-bridge, and full-bridge current measurements, with built-in voltage and current excitation. You can individually select and perform a different measurement type on each channel. Additionally, the sbRIO‑9218 features 60 VDC analog input isolation. Non-enclosed modules are designed for OEM applications.
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NI-9217, 4-Channel, 400 S/s Aggregate, 0 Ω to 400 Ω, PT100 RTD C Series Temperature Input Module
779592-01
4-Channel, 400 S/s Aggregate, 0 Ω to 400 Ω, PT100 RTD C Series Temperature Input Module - The NI‑9217 is a resistance temperature detector (RTD) input module. You can configure the NI‑9217 for two sample rate modes: high sample rate or high resolution. The NI‑9217 is compatible with 3‑ and 4‑wire RTD measurements, and it automatically detects the type of RTD (3‑ or 4‑wire) connected to the channel and configures each channel for the appropriate mode. The module provides per channel current excitation. The NI‑9217 features calibration and includes a channel‑to‑earth ground double isolation barrier for safety, noise immunity, and a high common-mode voltage range.
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Microphone Preamplifier
HT426E01
Nominal Microphone Diameter1/2Frequency Response Electrical Noise(at 22 C) (Flat 20 Hz to 20 kHz)Distortion (3 V rms input at 1 kHz)<-70 dB<-70 dB[1] EnvironmentalTemperature Range (Operating)-40 to +248 FExcitation Voltage 20 to 32 Constant Current Excitation 2 to 10 mA
