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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AC Current Shunts
CSA Series
Ohm-Labs’ CSA series of ac current shunts are designed as laboratory standards for ac current measurement up to high frequencies.
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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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Working Standard Shunts
CSW
CSW shunts are rated to 100 % continuous current with no loss of accuracy. They are largely immune from connection errors common to many shunts. All CSW shunts include ISO17025 accredited calibration through full current range.
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Shunts
Highly accurate manganin resistance d.c shunts. When a current is passed through the shunt a proportional millivolt output is produced.
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Current Transformers And Shunts
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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Impulse Current Measuring Shunts
ICMS
The Impulse Current Measuring Shunts ICMS are new designed tubular shunt types with best response behavior to match the high performance of the TR-AS digital recorder for comparative current measurements. A 1st partial response time less than 10ns and a settling times less than 20ns show the advantage of these shunts. They show no initial overshoot peak, no oscillations and do not need compensation box to optimize the transient behavior as known from e.g. cage shunts.
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Precision Shunts
Ohm-Labs manufactures metrology grade shunts for precise measurement of current from <1 mA to 3000 A.
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AC Current Shunts
AC Current Shunts feature low uncertainty (high accuracy), low temperature coefficients and excellent stability. These shunts are purely resistive with extremely small values of reactance. The 7340 shunts may be used over a wide frequency range from DC to 100 kHz and are optimized for use with thermal converters.
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Shunt Voltage References
Analog Devices offers a broad line of shunt precision voltage references that combine excellent accuracy and temperature stability with low noise and small packages. These devices operate in a manner that is functionally equivalent to a Zener diode. The bias current must be set higher than the sum of the maximum quiescent current of the voltage reference and the maximum expected load current. Since shunt voltage references are typically biased with a resistor, the voltage reference can operate on a wide range of input voltages.
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Low Cost Precision Shunt
LPS
This is a precision metal clad resistor designed with four terminals. These models exhibit a high load capacity as well as excellent accuracy. The isolated voltage and current connections make them suitable for very precise current measurements. Direct attachment to current bus and connection to voltage using flexible wires enables easy current measurement.
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CAN Sensor/ Interface
Current
Reach Technologies’ CAN Current Sensors sense and digitize conductor current for collection via CAN. The module is ideal for conveniently adding current data to a distributed CAN network. The CAN Current Sensor is configurable via J1939 or CANopen stacks, and are available in Hall Effect and shunt variants.
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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 High Current Resistors/Shunts
Measurements International Ltd.
The precision high current shunts are a series of High Current Resistors ranging from 1 A to 3000 A with optional air moving fans and resistance values from ohms to micro-ohm.
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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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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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Shunt: ACQ-200
BWB
*Constant Current up to 100 amps *Four Terminal Configuration*Excellent Long Term Stability*Max. Solder Temperature up to 350C/30 sec*RoHS and REACH Certified*AEC-Q200 Qualified
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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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High Current Calibrator
MC151
MC151 Current calibrator is an accurate current source capable of 120 A. Typical uses include calibration of current sensors, current probes, current transformers, shunts, ammeters, DMMs or as stable current source for test and development applications. The calibrator is equipped with a built-in multimeter that can be used for simulation of programmable transconductance or current amplifier.
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30 A Current Shunt
34330A
Measure current safely with this precision 0.001 ohm resistor housed in a plastic case surrounded by epoxy.
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Shunt
Shunts are used with Moving Coil Ammeters for the measurement of current in DC Circuits.
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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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Precision Current Shunt
Has five precision selectable Ultra stable Current Shunts which ranges from 0.0001 to 1Ω. The Shunt T/C is less than 10ppm, and the internal current meter will measure from 1μA to 1000Amps.
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PXIe-4331, 102.4 kS/s, 24-Bit, 8-Channel PXI Strain/Bridge Input Module
781345-01
102.4 kS/s, 24-Bit, 8-Channel PXI Strain/Bridge Input Module—The PXIe‑4331 is a high-speed input module that provides integrated data acquisition and signal conditioning for dynamic strain, load, and pressure measurements. This module includes increased accuracy, high data throughput, and synchronization features, making it ideal for high-density measurement systems. To remove noise, the PXIe‑4331 offers antialiasing and digital filters per channel. Each channel also features an independent, programmable excitation voltage. Additionally, the PXIe‑4331 provides remote sensing, internal bridge completion, and shunt calibration options per channel.
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15 Pin Breakout Interface
VSI-Breakout-15
The VSI-Breakout-15 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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Micropower Voltage References
Analog Devices offers a broad line precision micropower voltage references with extremely low quiescent currents (series references) or minimum shunt currents (shunt voltage references). All of our precision voltage references offer excellent initial accuracy and low temperature drift over time and temperature. Our Reference Plus products combine precision voltage references with comparators or amplifiers.
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Resistance Calibration
Process Instruments maintains fractional part-per-million accuracy with a state of the art resistance calibration facility. Specialized services include precision resistor manufacture, resistor and shunt repair, characterization of alpha and beta temperature coefficients and the determination of barometric effects on resistance values.
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100 Pin Breakout Interface
VSI-Breakout-100
The VSI-Breakout-100 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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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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Current Sensing Resistors: ACQ-200
TCS
These components are four-terminal. bus-bar, metal strip current shunts. Assembled using electron beam welding. These units can handle 15W of continuous power and a maximum current of 350A 90.1mohm). Also they can absorb a high pulse power rating and have very low inductance. They also feature excellent long term stability, less than 100ppm/C TCR, and have excellent frequency characteristics.
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Current Probes
Teledyne LeCroy current probes do not require the breaking of a circuit or the insertion of a shunt to make accurate and reliable current measurements. Based on a combination of Hall effect and transformer technology, Teledyne LeCroy current probes are ideal for making accurate AC, DC, and impulse current measurements.
