Shunts
An Instrument Shunt is a resistor connected in parallel with a measuring device to move the current range beyond a particular value for which the instrument is capable of measuring directly.
See Also: Current Shunts
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Differential Voltage Probes
DP150/DP200pro
The DP differential isolation probes are an important accessory for any laboratory involved in power electronics and high voltage systems. These probes allow isolated and floating measurements with any oscilloscope or data recorder, whilst the oscilloscope can remain grounded. Using a DP150 or DP200pro probe, differential and floating measurements can be made on a variety of ac power systems like 230V/110V ac input power supplies, chopped and switching power supplies, thyristor controllers, variable speed motor drives (PWM signals), motor inrush current and measurement across current shunts. The isolated input is made via two 4mm/banana safety sockets. The BNC output allows easy connection to an oscilloscope. The DP probes can be powered from a 9V battery or external power supply.
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Life Cyclic Durability Testing
Environment Associates can provide everything you need for cyclic durability testing and performance fixturing. Services include mechanical cycling to a position or load, fatigue cycling to a fixed load, rotational torque cycling, and simple push/pull cycling. EA can design your fixture with electro-dynamic, air, or hydraulic assistance to mechanically move your part. All of our fixtures can be manufactured to withstand a wide range of temperature, humidity and vibration inputs. If required, forces can be monitored electronically, using a wide variety of inputs (i.e. strain gages, load cells, rotational transducers, thermocouples, shunts, and more). EA can create holding and check fixtures to perform “pre” and “post” evaluation for dimensional issues that may occur during testing. EA can provide fixtures for single tests run internally for EA test labs and can manufacture fixtures to be purchased directly by the customer for their internal use.
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Single Phase 2 Circuit Energy Meter Test Bench Type KP-S1000-B
Bofa Instrument & Equipment Co., Ltd
Single phase 2-circuit energy meter test bench type KP-S1000-B, is a new generation, high precision energy meter calibration equipment. It is especially designed for testing 2-circuit energy meter (shunt circuit and CT circuit), open or closed test link (I-P link) both. It is an ideal testing equipment for mass production of 2-circuit energy meter in meter factory. All the testing procedures can be automatically operated by PC or by Keyboard manually.
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Stand Alone/ Bench Top Load Cell Amplifier/ Conditioner Module
MODEL TMO-2
The TMO-2 Transducer Modules is a complete differential amplifier/signal conditioners with self contained power. The units provide excitation, balance and span adjustment via precision 10 turn pots, and shunt calibration necessary to couple a user supplied bridge type transducer to an indicating instrument. Full scale output is specified at plus or minus 10 VDC. The TMO-2 provides a floating shunt calibration circuit which applies calibration at the transducer, thereby eliminating errors due to line losses. The excitation supply incorporates a Wagner Ground to greatly improve Common Mode Rejection. The factory set bandwidth of the module is narrow to improve stability for applications such as weighing scales. The removal of a single capacitor will increase the frequency response DC to 60K Hz for dynamic data applications.
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Electronic Load
* Fully programmable, self-contained, air-cooled solid state load.* Patented design is optimized to provide ultra-low impedance operation for fuel cell testing.* Load is compatible with AC impedance or frequency response analyzers.* Interchangeable shunts for precise operation over a wide dynamic range.* Ten built-in cell voltage monitoring inputs optional. Additional voltage monitoring inputs available.* Ethernet Interface for simple configuration and expansion!* Combine with additional Fideris™ Innovator Series™ modules to create a fully-integrated,fully-automated, customized test system.* System-wide control of all Fideris™ Test System Components using FCPower™ Software,LabviewTM, or other programming language.* Integrated hardwired Run/Standby signal.
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Precision AC/DC Active Current Shunt
2575A
A versatile, powerful calibration tool, the 2575A Precision AC-DC Active Current Shunt measures both AC/DC current and works as a standard for low-level resistance calibration requirements.
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50 Pin Breakout Interface
VSI-Breakout-50
The VSI-Breakout-50 is a very useful tool in debugging signals or software in a system. It allows unlimited access to signals within the cabling that might otherwise be difficult to access. The board gives test points at each side of the connector and jumper with a easy to use tabbed shunt to allow for easy disconnection of any particular signal between the connectors. The jumpers also give an opportunity to inject a signal regardless of what signal was originally being driven.
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High Frequency Clock Divider Board
Alliance Support Partners, Inc.
Clock Divider is designed to divide high frequency signals, up to 2.5GHz, from 4 to 256 times. It will accept single ended (Unbalanced) or differential (Balanced) signals with amplitudes as little as 100mV rms. The clock division is controlled by 4 shunt jumpers. The circuit can be disabled and the divide by counter reset with 2 control signals. The on board regulator will accept voltages from 4.85 to 15.0V. The output is capable of driving 700mV Peak to Peak into 50 Ohms.
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Phase Meter Current Shunts
610 and 650
Clarke-Hess Communications Research
The Model 610 and 650 Current Shunts are specifically designed to operate with the Model 6000A Precision Phase Meter. These shunts are frequency tuned to have negligible phase shift (less than 5m) at 50/60Hz making them ideal for line frequency applications. They can also be idealized for other frequencies as specified by the user. Consult factory for details.
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20V/30A/300W DC Programmable Electronic Load
TOB-IT8512
Xiamen Tob New Energy Technology Co., Ltd
IT8512 120V/30A/300W DC Programmable Electronic Load for Battery and Power Supply TestHigh performance and affordable single channel DC electronic load. TOB-IT8512 DC electronic loads provide you with the flexibility to test a wide range of applications from power supply, charger to battery. The high resolution voltage(1mV), current(0.1mA) measurement system provides both accuracy and convenience, and eliminates the need for a DMM, external shunts and wiring.
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Current Sensing
voltage-output, current-sensing amplifier family that integrates an internal shunt resistor to enable high-accuracy current measurements at common-mode voltages that can vary from 0 V to 36 V, independent of the supply voltage. The device is a bidirectional, low- or high-side current-shunt monitor that allows an external reference to be used to measure current flowing in both directions through the internal current-sensing resistor sensor. The integration of the precision current-sensing resistor provides calibration equivalent measurement accuracy with ultra-low temperature drift performance and ensures an optimized Kelvin layout for the sensing resistor is always obtained.
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PXI Based Multifunction Measurement and ICT Instrument
PXI-501
The PXI-501 is a multifunction measurement instrument for functional and in-circuit measurements.It combines two parametric measurement units with a digital voltmeter, a high voltage current source and a discharge unit. This powerful combination makes it the ideal instrument for classical analog in-circuit test and manufacturing defect analysis with additional functional test capabilities.With it’s fast sampling rate of up to 4MSps it speeds up measurements and is capable of measuring and generating AC signals up to 100kHz.To enhance the PXI-501 capabilities it can be combined with an ABex TM-501 or an ABex TM-404. The ABex TM-501 enhances the in and output range of the PXI-501. Furthermore, it provides a shunt current measurement upgrade. In combination with the ABex TM-404 it’s a complete in-circuit test solution with 86 channels in one ABex slot. For sure it can be upgraded to 2838 test points in one rack by simply adding additional matrix modules.With the above-mentioned terminal modules, the PXI-501 is able to act as a ABex system controller, so that no additional controller is required in the cassis.
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Voltage References
Maxim offers an industry-leading portfolio of shunt and series voltage reference ICs. We were the first to develop a series reference in a 3-pin SC70 and in chip-scale packaging. Our hundreds of voltage references include high-accuracy, low-power, low-noise, and automotive-grade products.
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10 Digit Rate/Batch Counter (Analogue)
CS2-TM-Analogue
The CS2-TM Totalizer controller provide high accuracy measurement, display, control and communication (Modbus RTU mode) of 0~10V/4~20mA from flow meter or mV from Shunt for Amp-Hour.There are two display screen and 3 external control input (DI) in standard and the optional 4 Relay, 1 Analogue, 1 Pulse and RS485 port available. They are also support fantastic control function as like as N, R, C mode for totalizer and batch control.
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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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High Power Precision Shunt Resistor
HPS
*Up to 250W on heat sink*Max. current limit 387AExcellent long term stability & short term stability*Low temperature coefficient of resistance (TCR)*High current sensing & reference restores in laboratories*Change - discharge test equipment for high capacity batteries*Current sources & laboratory power supplies
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37 Pin Breakout Interface
VSI-Breakout-37
The VSI-Breakout-37 is a very useful tool in debugging signals or software in a system. It allows unlimited access to signals within the cabling that might otherwise be difficult to access. The board gives test points at each side of the connector and jumper with a easy to use tabbed shunt to allow for easy disconnection of any particular signal between the connectors. The jumpers also give an opportunity to inject a signal regardless of what signal was originally being driven.
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High Impedance Differential Clock Divider
Alliance Support Partners, Inc.
he ASP-DCD-00 board is a high impedance input clock divider circuit. It is designed to provide minimum load to a clock source for frequency measurement. It accept single ended (Unbalanced) or differential (Balanced) signals with amplitudes as little as 100mV rms; it divides the input signal frequency from 2 to 256 times depending on shunt jumper selections on J3. The board requires 5VDC 500mA power source to operate. The output is capable of driving 5V TTL logic levels.
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Multiphase Power Analyzer
2800 Series
The Valhalla Scientific 2800 High-Precision Power Analyzer is available in 1-, 2-, 3-, 4-, 5-, or 6-phase versions. All voltage inputs 0.3V up to 1500V peak and all current inputs 1.5mA up to 1A; 15mA up to 5A; 1A up to 40A; and shunt inputs 60mV up to 6V are potentially free and exhibit low noise, high common mode suppression, excellent DC-stability, wide frequency range (DC-2MHz) and very low self-heating on current inputs.There is no need to fiddle with DC-compensation, or changing current plugging. All is built into the input sections of the power analyzer, ready for measurements. It is simple to use, your intuition will guide you to operate the Power Analyzer touch screen correctly.
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Automatic Capacitance Bridge Tester
HTDR-H / 395
Wuhan Huatian Electric Power Automation Co., Ltd.
Measurement of high voltage shunt capacitor banks for reactive power compensation devices.
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Midi Logger
GL240
Its compact size contains an isolated input system which ensures that signals are not corrupted by inputs to other channels, thus eliminating wiring concerns. The GL240s multi-type inputs are suitable for voltage, temperature, humidity, pulse, and logic signals, enabling combined measurements of different phenomena like temperature/humidity and voltage. power ground allowing off-ground measurements using shunts, as well as powered or grounded thermocouples.
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25 Pin Breakout Interface
VSI-Breakout-25
The VSI-Breakout-25 is a very useful tool in debugging signals or software in a system. It allows unlimited access to signals within the cabling that might otherwise be difficult to access. The board gives test points at each side of the connector and jumper with a easy to use tabbed shunt to allow for easy disconnection of any particular signal between the connectors. The jumpers also give an opportunity to inject a signal regardless of what signal was originally being driven.
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Service Ground Test Set
900
TESCO’s Service Ground Test Set has been designed to check the condition of the ground connection on a secondary service. If for any reason the ground connection has a resistance, this can be immediately detected by the Test Set. The Service Ground Test Set consists of a voltmeter which can be shunted by a resistance of 60 ohms. The voltmeter is of the suppressed zero type with a double range, from 65 to 130 or from 130 to 260, and can be used for checking service voltage independently of the ground test.
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L Terminal Shunt Resistor
LT
LT shunts are highly accurate manganin resistance D.C. shunts. These shunts are designed for standard current measurement of electric equipment.
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Precision Metal Clad Shunt Resistor
IRHF
Precision Metal Clad Resistors designed in four- terminal technique, are distinguished by high load capacity as well as excellent accuracy. Isolated voltage and current connections making them suitable for very precise current measurements. Easy current measurement is performed by attaching to current bus directly and connecting to voltage (ampere) metal through flexible wires. The ULH models are UL approved versions. Units have a low inductance, heavy copper terminals. The main application is battery manufacturing test jig.
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DC Energy Meter
Multiple channels can be measured by a single meter, EN2450N & EN2450DDifferential current input for all the current channelsProgrammable shunt secondary 50mV to 100mVProgrammable CT Primary for all channels up to 200A - for Hall Effect CTData logging for parameters such as Energy, Load hours and Ampere hoursEasy installation,Compact size, weight and simple wiring
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Cross Voltage Testers
designed to perform the 60 Hz power line cross test/AC power fault tests required in GR 1089 issue 6 table 4.5 surge test 3,4, 4.3,and 6, and for UL 1950 section 6.4 paragraph 3 and 4.. Preset and Adjustable Time Settings Measuring Terminals including Voltage Sense and Current Shunt portals provide a safe location for users to accurately measure test voltages and output current while setting up tests. Calibration of the Mini_PT-600 is designed to be performed with a simple handheld multi-meter and the removable Currents Shunts can be easily sent to a calibration laboratory if required.
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Power Metering Precision Shunt Resistore
PMS
These components have E-Beam welded manganese-copper alloy elements giving high strength, stability and reliability. Low thermal EMF and TCR. Small size and minimal power loss. Minimal heat generation and surface temperature due to small total resistance. Proprietary processing technique allows very low resistance values. Ideally suited for KWh meters and sampling sensor shunts. These units are also suitable for custom design.
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Reactor Loss Measurement Systems
Measurements International Ltd.
The AccuLoss® SR2020 System by Measurements International emerges as a premium, dependable solution tailored for measuring losses in high-voltage shunt reactors. Specifically engineered to function seamlessly at remarkably low power factors, this system excels in applications demanding extensive scalability. Notably, the AccuLoss® SR2020 System offers two key advantages: unparalleled accuracy and remarkable speed.
