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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Product
Working Standard Shunts
CSW
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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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Product
AC Current Shunts
CSA Series
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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
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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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AC Current Shunts
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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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Product
Selectable Shunt Current Sensor ±40 V, 20 MHz
CX1104A
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The CX1104A selectable shunt current sensor is a dedicated accessory for the CX3300 series and enables dynamic current measurements from 1 μA to 15 A up to 20 MHz bandwidth with an available calibrated resistive sensor head attached
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Product
FD-11637, 8-Channel Strain/Bridge Input Device for FieldDAQ
785641-01
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8-Channel Strain/Bridge Input Device for FieldDAQ - The FD-11637 can measure eight channels and has built-in bridge completion and voltage excitation to support for quarter-, half-, and full-bridge sensors. It also features anti-alias filtering, offset nulling, and shunt calibration to reduce the effect of noise and improve measurement accuracy. The FD-11637 has an ingress protection rating up to IP67 (dust- and water-resistant), can operate in -40 °C to 85 °C environments, and can sustain 100 g shock and 10 grm vibration. The FD-11637 incorporates Time Sensitive Networking (TSN) and features an integrated network switch and built-in power circuitry for simple daisy chaining. You program the FD-11637 with NI-DAQmx, which automatically synchronizes multiple FieldDAQ™ devices. The FD-11637 is ideal for test cell and outdoor environments.
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Product
Air Core Shunt Reactors
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Shunt Reactors act as absorbers of reactive power to increase energy efficiency of the power system. Shunt Reactors are inductors that 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. The shunt reactors provide inductive compensation.
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Product
PXIe-4331, 102.4 kS/s, 24-Bit, 8-Channel PXI Strain/Bridge Input Module
781345-01
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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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DC-to-250MHz, X1/x10 Probe Kit (HP-3250i), Isolated BNC
PRB-HP-3250i
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Oscilloscope Probe 1:1-1:10 - HP-3250i250 MHz bandwidth, rated 600 V.The Oscilloscope Probe 1:1-1:10 - HP-3250i is a 1:1-1:10 selectable passive high impedance oscilloscope probe with 250 MHz bandwidth (1:10) designed and calibrated for use on oscilloscopes having an input impedance of 1 MOhm shunted by 20 pF. However, it may be compensated for use with an oscilloscope having an input capacitance of 10 to 30 pF.
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Current Transformers And Shunts
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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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Shunt Regulators
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These are the standard reference voltage source widely used by the feedback circuits of switching power supplies. Compared to the Zener diode, which is a discrete product, a shunt regulator has much better voltage precision because voltage control is carried out as an IC.
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Built-in Measuring Instruments
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PeakTech Prüf- und Messtechnik GmbH
Practical built-in module as voltmeter with freely definable measuring range from 0 to 200mV, 2V, 20V, 200V or 500 V. Current measurements from 0 to 200µA, 2mA, 20mA, 200mA and 2A can be carried out via a shunt. With the snap-in frame, this inexpensive module can be integrated into any front panel of your own construction.
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High-Frequency Probe, 300 kHz to 3 GHz
85024A
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85024A high-frequency probe makes it easy to perform in-circuit measurements. An input capacitance of only 0.7 pF shunted by 1 megohm of resistance permits high frequency probing without adversely loading the circuit under test. Excellent frequency response and unity gain guarantee high accuracy in swept measurements with this probe. High probe sensitivity and low distortion levels allow measurements to be made while taking advantage of the full dynamic range of RF analyzers.
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High-Voltage Isolation Amplifier
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Knick Elektronische Messgeräte GmbH & Co. KG.
Measurement of DC or AC voltages up to () 3600 V and of large DC currents to about () 20 kA with shunt resistor or directly in the device to () 5A DC and AC. Variants with calibrated range selection.
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9 Pin Breakout Interface
VSI-Breakout-9
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The VSI-Breakout-9 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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Product
PXIe-4330, 25 kS/s, 24-Bit, 8-Channel PXI Strain/Bridge Input Module
781346-01
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25 kS/s, 24-Bit, 8-Channel PXI Strain/Bridge Input Module—The PXIe‑4330 is a simultaneous input module that provides integrated data acquisition and signal conditioning for bridge-based sensors. The PXIe‑4330 includes increased accuracy, high data throughput, and synchronization features, making it ideal for high-density measurement systems. To remove noise, the PXIe‑4330 offers antialiasing and digital filters per channel. Each channel also features an independent, programmable excitation voltage. Additionally, the PXIe‑4330 provides remote sensing, internal bridge completion, and shunt calibration options per channel.
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Load Cell Amplifier Signal Conditioner with Removeable Terminals
MODEL LCA-RTC
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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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Isolation Amplifiers
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Isolation Amplifiers provide power supply designers with a higher performing, single chip alternative to isolation techniques based on optocouplers and shunt regulators. Analog Devices ADuM3190 and ADuM4190 isolated error amplifiers have a 400 kHz bandwidth, with 0.5% typical initial accuracy at 25°C and 1% total accuracy over the extended temperature range of –40˚C to +125˚C. This provides manufacturers of ac-to-dc and dc-to-dc power supplies with a significant upgrade in speed and operating temperature range, as well as a 5× improvement in transient response.
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100 Pin Breakout Interface
VSI-Breakout-100
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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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Tan Delta Test System
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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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Impulse Current Measuring Shunts
ICMS
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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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Service Ground Test Set
900
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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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High Impedance Active Probes
12C
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A high speed, high input impedance active probe for measuring the internal node voltage of integrated circuits. The input is 1 megohm shunted by 0.1 pf and the rise/fall times are 0.8 ns. This instrument has full dc capability and can be used with any oscilloscope. The Model 12C was specially designed so that when used in conjunction with a high input impedance oscilloscope, signal attenuation is 10:1 and with a 50 Ohm input, signal attenuation is 20:1.
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High Impedance Active Probes
34A
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Engineered to meet the stringent demands of advanced high frequency circuit designers. This high impedance probe combines full DC capability, rise/fall times of 120 ps, and a nominal loading input impedance of 10 megohm shunted by 0.1 pf. Signal attenuation is 20:1 with a 50 ohm oscilloscope input.
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AC and DC Non Inductive Current Shunt
Series A co-axial shunt and Option 02F/B shunt
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Use with wattmeters, DMMs and power analyzers to extend current measurement ranges. Use with phase angle meters to enable phase angle measurements between voltage and current. Ultra low phase shift
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Product
Shunt Isolation Amplifier
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Knick Elektronische Messgeräte GmbH & Co. KG.
Especially to accurately measure large DC currents via shunt resistors, ie for making isolated detection of mV voltage on shunts. Variants with calibrated range selection. Working voltage up to 3600 V AC / DC.
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High Power Shunt Resistors
CS227
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The CS227 is a metal foil, SOT227 resistor designed to give a high current capability. The metal foil element is situated on an insulated heatsink composed of plated copper. This assembly is then mounted into a durable plastic housing and sealed with high temperature epoxy.
