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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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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SparkFun Current Sensor Breakout
INA169
The INA169 is a “high-side current monitor,” which means that you place a resistor (a “shunt resistor”) on the positive power rail and the INA169 measures the voltage drop across that resistor. The INA169 outputs a small current based on the measured voltage drop. If you place a resistor from the output of the INA169 to ground, you can measure the voltage at the 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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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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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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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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Ultra High Power Precision Shunt Resistor
UHPS
*Max. current limit 707A*Excellent short term stability*Low temperature coefficient of resistance (T.C.R.)*High current sensing & reference resistors in laboratories*Change - discharge test equipment for high capacity batteries*Current sources & laboratory power supplies
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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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DC-to-250MHz, X1/x10 Probe Kit (HP-3250i), Isolated BNC
PRB-HP-3250i
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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High Impedance Active Probes
12C
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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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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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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Multi-Channel Digital Power Meters
66203/66204
Chroma Systems Solutions, Inc.
Voltage Range :15/30/60/150/300/600 VrmsCurrent Range :0.005/0.02/0.05/0.2/0.5/2/5/20 ArmsFrequency Range : DC, 15Hz~10kHzEmbedded high speed DSP, 16 bits Analog/Digital convertersHalf rack size, 4 input modules design (66204)Support different wiring configuration power measurement (1P2W/1P3W/3P3W/3P4W)Support external shunt and CT for higher current measurement application5 mA minimum current range & 0.1mW power resolutionMeets ENERGY STAR / IEC 62301 /ErP measurement requirementsAccumulated energy methods for unstable power measurementUser-define criteria provides automatic PASS/FAIL indicationsDual current shunt design provides high accuracy over a wide current rangeTHD and user-specify order distortion measurementInrush current and energy measurementVoltage/ Current harmonics measurement up to 50 orders
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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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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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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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Digital Arrester Clamp Tester
ALCL-40L
MULTI MEASURING INSTRUMENTS Co., Ltd.
Lightning arresters are designed to protect a power distribution system by shunting to ground the high voltage surges caused by lightning. ALCL-40L measures to warn that an arrester is damaged or deteriorated and should not be energized.
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Built-in Measuring Instruments
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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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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AC and DC Current or Voltage Transducers
VT7 AND VT8 Series
The Model VT7 Series dc voltage transducer produces an output which is directly proportional to the input from dc to 10kHz. It functions as a millivolt dc shunt or a high voltage isolator to 1000V
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Current Sensors
Measurlogic offers an array of current sensors for every need, including split core, solid core and Rope current transformers (CTs); DC Shunts and Hall Effect Sensors. All of our electrical sensors are designed with an easy, un-intrusive installation in mind. With a low cost and high accuracy guarantee, we provide top of the line solutions for measurement and cost savings for residents and business owners alike.
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Repeated Charge Discharge Test Set
The IS 13341 : 1992 has laid down the requirements for Ageing Test, Self-Healing Test and Destruction Test on Shunt Capacitors of the self healing type for AC Power Systems. The Ageing Test is to be performed at a specified voltage of 1.25 times the rated voltage for 750 hours. The test is to be followed with a repeated discharge cycle test which involves charging of the capacitor to a DC voltage and discharge of the same through an Inductance. Sivananda Electronics has developed this equipment for the benefit of capacitor manufacturers, for the first time in India.
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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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AC Power Sources
CSW Series
AMETEK Programmable Power, Inc.
The CSW Series represents a new generation of AC/DC power sources that address the increasing demands on test equipment to perform additional functions at a lower cost. By combining a flexible AC/DC power source with a high performance power analyzer, the Compact CSW Series is capable of handling complex applications that have traditionally required multiple systems. The sleek integrated approach of the CSW avoids cable clutter that is commonly found in test systems. All connections are made internally and the need for digital multimeters, power harmonics analyzers, and current shunts or clamps is eliminated.
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Current Probe
DCP-BTA
Vernier Software & Technology, LLC
The Current Probe measures DC and low-frequency AC currents up to 600 mA. Use Current Probes in combination with Differential Voltage Probes to investigate Ohm's Law and explore series and parallel circuits. The 0.1 shunt resistor minimizes changes to your circuit. If currents will exceed 1 A, use the High Current Sensor.
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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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Microprocessor Based Indicator
Strong Anodized NEMA4X-IP56 ALUMINUM 1/8 DIN CASE Compact Design Provides Excitation to Transducers or Sensors Accept DC mV/V, V, mA Signal Proportional Analog Output V or mA Easy to Program using 4 ButtonsFront Panel Shunt Calibration User Programmable High & Low Set Point Standard No-Output or Relay Output Optional 8-Step Output, RS232, or BCD Output Available
