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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Series Voltage References
Analog Devices offers a broad line of series voltage references with low dropout, low power, and excellent line regulation. These devices are voltage references that are functionally similar to a three-terminal regulator. Some series voltage references are designed to also operate in shunt mode by biasing the output pin and leaving the input pin open circuit. Series mode voltage references have the advantage that they draw only load and quiescent current from the input supply.
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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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ABex Terminal Module for Extending the Functionality of the PXI-501
ABex TM-501 MFI
The ABex TM-501 is an ABex terminal module that extends the multifunction measurement card PXI-501 with additional features. It is located in front of the PXI-501 card.It expands the analog outputs voltage range of the PMUs to -10V up to +40V. Additionally it features a shunt current measurement unit to measure currents up to 500mA
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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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Precision Power Shunt Resistors
PSS
*Resistance from 50uOhm to 1mOhms*Power Rating to 100Watt
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Precision Micro-Ohmmeter
4176
Best-selling Valhalla 4176 ohmmeter measures transformers, coils, and shunts the competition can’t. The 4176 provides ultra-stable low-resistance measurements.
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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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LV Iron Core Shunt Reactors
Iron core Shunt Reactors act as an absorber of reactive power to increase energy efficiency of the power system. Shunt Reactors are used in order to compensate capacitive reactive power generated by long and lightly loaded transmission lines as well as underground cables, thus allowing the flow of more active power through the system and avoiding over voltages. Shunt Reactors can be directly connected to the power line or to a tertiary winding of a three-winding power or distribution transformer.
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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.
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Shunt
Shunts are used with Moving Coil Ammeters for the measurement of current in DC Circuits.
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48-Channel High Performance Strain Gauge Measurement Instrument
EX1629
48-Channel High Performance Strain Gauge Measurement InstrumentSupports quarter-bridge (120, 350Ω or user defined), half-bridge or full-bridge24-bit ADCs, sampling rates up to 25 kSa/sBuilt in programmable differential excitation -8V to 8VBuilt in selectable bridge completionConfigure signal conditioning excitation and bridge completion on a per channel basisSimple, low-cost wiring using RJ-45 telecom connectorsSupports TEDS for easy transducer detection and setupRJ-45 input connector reduces setup cost and timeBuilt in self-calibration and shunt calibrationSupports voltage, ratiometric and linear measurements other than strain measurements.
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Electrical Standards
To verify the performance of an electrical calibrator or dc calibrator, you need an electrical standard. Fluke Calibration standards are found in primary calibration laboratories across the world. A wide range of electrical standards and frequency standards are designed to meet the needs of today’s laboratories for traceability and quality accreditation while also being portable, simple to use, and easy to support. Electrical standards include: Voltage standards; ac/dc transfer standards; ac measurement standards; resistance standards; ratio standards; current shunts.
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Current Shunt Module
CURS100
The CURS100 converts a current signal output by a sensor or output device (e.g., 4 to 20 mA) to a voltage that can be measured by a datalogger. The 100 ohm resistor used for the current shunt allows currents up to 25 mA to be read on a 2500 mV range (CR10, CR10X, CR510, CR500) and currents up to 50 mA to be read on a 5000 mV range (CR23X, 21X, CR7, CR5000, CR9000, CR9000X).
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Dual Wide Range Power Monitor
LTC2992
The LTC®2992 is a rail-to-rail system monitor that measures current, voltage, and power of two supplies. It features an operating range of 2.7V to 100V and includes a shunt regulator for supplies above 100V. The voltage measurement range of 0V to 100V is independent of the input supply. Two ADCs simultaneously measure each supply’s current. A third ADC monitors the input voltages and four auxiliary external voltages. Each supply’s current and power is added for total system consumption. Minimum and maximum values are stored and an overrange alert with programmable thresholds minimizes the need for software polling. Data is reported via a standard I2C interface. Shutdown mode reduces current consumption to 25μA typically.
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Wide Angle Scale Instrument
LS-96
Standard Electric Works Co., Ltd
● For ranges higher than 20A DC, use external shunt with a 50mV DC Ammeter.● For ranges higher than 300V DC, use external Volt Divider with a 1mA Voltmeter.● For ranges higher than 5A AC, use external Current Transformer with a 5A AC Ammeter. ● For ranges higher than 600V AC, use external Potential Transformer with a 150V AC Voltmeter.● Full Scale Deflection : 250° ● Accuracy : Class 1.5● Composition : Glass window, ABS resin frame and case, PC glass fiber base mounting fittings included.● Color : Black base and frame, white scale plate and meter body.● Pointer : Stick shape in black color.
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Transient Voltage Suppressors (TVS)
A transient voltage suppressor (TVS) is an avalanche diode specially designed to clamp overvoltages and dissipate high transient power surges. ST’s Transil™ protection devices are able to shunt a high current surge for a short duration.
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Interface Technology ProLine
Knick Elektronische Messgeräte GmbH & Co. KG.
Isolation Amplifier for DC voltage and current measurement with galvanic isolation, active and passive standard signal isolation amplifier, supply isolation amplifier for supplying 2-wire sensors, transmitter for temperature and AC signals, isolating amplifiers for high voltages and shunt applications. T
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Medium Voltage Iron Core Oil-Immersed Shunt Reactor
Iron core Oil-immersed Shunt Reactors act as an absorber of reactive power to increase energy efficiency of the power system.
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Connectors, Jumper - Black
INT-10901
Jumper for 0.1" (2.54mm) spaced headers. These are also known as a 'shunt'. These mate with the 0.1" square-pin headers and are the 'open' frame style. RoHS compliant.
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Torque Measuring and Monitoring System
WISER 4000
TECAT Performance Systems, LLC
The WISER 4000 system is the latest release of TECAT’s low-cost, ultra-low power and extremely accurate torque sensor. The wireless system has the optional ability to measure 3-axis acceleration, barometric pressure and ambient temperature, all within the same incredibly small footprint. The 4000 includes on-board data logging without PC or DAQ connectivity, and remote flash capability, which enables firmware upgrades without removing the system from the unit under test. Featuring shunt calibration, TECAT’s latest WISER system is designed to simplify instrumentation verification for users, while allowing them to check calibration of the system in the field. In addition, the WISER 4000 has been enhanced with two additional outputs, a higher-speed recording, and is available with custom-built remote enclosures to protect the system’s remote unit and battery from damage due to debris.
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Standard Resistor Oil Bath
9400
Measurements International Ltd.
Measurements International’s series of fluid baths are used for the maintenance of standard resistors and shunts. The 9400 has been designed after compiling years of customer feedback on existing resistor oil baths.
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Shunt: ACQ-200
BWR
*5 watts*Resistance values down to 0.0003 ohms*Special tight tolerance are available on request
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Signal Conditioner
SGA
Versatile signal conditioner featuring user selectable outputs of +/-10V, +/-5V, 0-10V, 0-5V, 0-20mA and 4-20ma. DC or AC powered with switch selectable filters from 1 to 5kHz and a sealed ABS enclosure. Supports shunt calibration and a wide range of gain settings.
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Digital Power Meter, 30A
66205
Chroma Systems Solutions, Inc.
Voltage Ranges:15/30/60/150/300/600 Vrms1200Vrms (optional)Current Ranges : 0.005/0.02/0.05/0.2/0.3/0.5/2/5/20/30 ArmsFrequency Range : DC, 15Hz~10kHzEmbedded high speed DSP, 16 bitsAnalog/Digital converters withmax samipling rate up to 250kHzCapable of meeting the IEC 61000-4-7harmonics measurement requirementsSmart Range function provides seamlesspower integration measurement underauto range modeSupports external shunt and CT forhigher current applications5 mA minimum current range &0.1mW power resolutionMeets ENERGY STAR /EN 50564/IEC 62301/ErP requirementsUser-define criteria providesautomatic PASS/FAIL indicationsTHD and user-specify order distortionmeasurementInrush current and energy measurementsVoltage/ Current harmonics measurementsup to 100 ordersUSB (Host) interface provides data loggingfunctionalitySupport GPIB, USB, RS232, LAN (option)interface
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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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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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Crossing Control Bypass Switch
XCBS-DL
The XCBS-DL is permanently wired into each crossing warning system, and can be configured with either a removable or non-removable bypass key. Simply connect the track connection harness to the designated track connection terminals. To prevent unnecessary operation of the crossing warning system, insert the key and select "bypass", rotate the knife switch to "bypass" and the crossing is disabled. When in the "bypass" position, a Dummy Track Load is connected to the track wire connections in parallel with the rails and the crossing approaches are shorted, preventing unnecessary activation when track equipment is working in the crossing approach circuit. The opening of one track lead may be desired to prevent unnecessary activation with intermittent shunting on the crossing approaches close to the crossing.
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Tan Delta Test System
Precision measuring bridge is designed for determining the capacitance and dielectric dissipation factor of liquid and solid insulants, cables, capacitors, line transformers, generators, motors, bushings etc. Furthermore it can also be used for power loss measurement on shunt reactors or similar apparatus. This system is suitable for both low and high voltage measurement at line frequency. Measurement reports can be printed. This measuring equipment has been specially developed to maximise efficiency in production and quality control environments. Its outstanding accuracy also makes it suitable for laboratory and research applications.
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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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Stand Alone/ Bench Top Load Cell Amplifier/ Conditioner Module
MODEL TMO-2A
The TMO-2A Transducer Modules is a complete differential amplifier/signal conditioners with self contained power. The unit 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. Zero to full scale output is specified at 4-20 mA. The TMO-2A 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. The removal of a single capacitor will increase the frequency response DC to 60K Hz for dynamic data applications.
