Shunts

A shunt is a precision resistor connected in parallel across a device which is used to measure both alternating and direct current by creating a low-resistance path.

How does a shunt work?
Also known as an ammeter shunt or a current shunt resistor, a shunts low resistance creates only a small amount of voltage drop by using little energy in the process. By using Ohms Law equation, the voltage across the shunt is measured and used to calculate the current flow in amperes.
A resistor of accurately known resistance (usually a manganin resistor) is placed in parallel with the ammeter. The current is then divided so that only a small amount travels through the ammeter and the actual amperage can be directly measured.

Shunts applications
Shunts are diverse and capable of many uses within many different applications:
  • One of the uses of a shunt is within a renewable energy system such as wind turbines or solar panels. They are used to measure how much current is flowing in and out of the battery, or for knowing how much power is being generated.
  • If high frequency noise is an issue, a shunt with a capacitor
    can be used to redirect noise sending it to the ground before the signal reaches the circuit elements.
  • They can be installed within a DC disconnect enclosure with a negative conductor between the batteries and the inverter. Some systems also have multiple shunts when several inputs and outputs require monitoring.
  • Shunts can be used for overload protection in control devices such as battery chargers and power supplies. They can also be used in digital meters and coil panel meters for measuring current in DC.


Types of shunts
There are several different types of shunts such as, standard brass ended, compact brass ended, digital, plate type and wire type.
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Rincian Komponen Brand Stock Maximum Current Voltage Output Shunt Type Accuracy Minimum Temperature Maximum Temperature Series
HOBUT Shunt, 20 A, 200mV Output, ±1 % Accuracy HOBUT 155 20 A 200mV - ±1 % - - -
Murata Power Solutions Brass-Ended Shunt, 100 A, 100mV Output, ±0.25 % Accuracy Murata Power Solutions 126 100 A 100mV Brass-Ended ±0.25 % -40°C 60°C -
HOBUT Plate Shunt, 1 A, 75mV Output, ±1.5 % Accuracy HOBUT 92 1 A 75mV Plate ±1.5 % - - -
Murata Power Solutions Digital Shunt, 100 A, 50mV Output, ±0.25 % Accuracy Murata Power Solutions 64 100 A 50mV Digital ±0.25 % -40°C +60°C -
HOBUT Shunt, 2 A, 200mV Output, ±1 % Accuracy HOBUT 62 2 A 200mV - ±1 % - - -
Murata Power Solutions Digital Shunt, 50 A, 50mV Output, ±0.25 % Accuracy Murata Power Solutions 60 50 A 50mV Digital ±0.25 % -40°C +60°C -
HOBUT Plate Shunt, 10 A, 75mV Output, ±1.5 % Accuracy HOBUT 57 10 A 75mV Plate ±1.5 % - - -
HOBUT Shunt, 20 mA, 200mV Output, ±1 % Accuracy
  • No. Stok RS 257-379
  • Merek HOBUT
  • Pbrk. No. Komp. SHR20MA200
HOBUT 56 20 mA 200mV - ±1 % - - -
HOBUT Brass-Ended Shunt, 100 A, 75mV Output, ±1 % Accuracy HOBUT 53 100 A 75mV Brass-Ended ±1 % - - -
Murata Power Solutions Digital Shunt, 200 A, 50mV Output, ±0.25 % Accuracy Murata Power Solutions 51 200 A 50mV Digital ±0.25 % -40°C +60°C -
HOBUT Plate Shunt, 3 A, 75mV Output, ±1.5 % Accuracy HOBUT 45 3 A 75mV Plate ±1.5 % - - -
HOBUT Plate Shunt, 30 A, 75mV Output, ±1.5 % Accuracy HOBUT 30 30 A 75mV Plate ±1.5 % - - -
HOBUT Shunt, 200 mA, 200mV Output, ±1 % Accuracy
  • No. Stok RS 257-385
  • Merek HOBUT
  • Pbrk. No. Komp. SHR200MA200
HOBUT 29 200 mA 200mV - ±1 % - - -
Murata Power Solutions Brass-Ended Shunt, 500 A, 50mV Output, ±0.25 % Accuracy Murata Power Solutions 27 500 A 50mV Brass-Ended ±0.25 % -40°C 60°C -
HOBUT Brass-Ended Shunt, 300 A, 75mV Output, ±1 % Accuracy HOBUT 26 300 A 75mV Brass-Ended ±1 % -20°C +40°C -
Sifam Tinsley Brass-Ended Shunt, 5 A, 75mV Output Sifam Tinsley 22 5 A 75mV Brass-Ended - - - Kappa
HOBUT Plate Shunt, 100 mA, 75mV Output, ±1.5 % Accuracy
  • No. Stok RS 257-329
  • Merek HOBUT
  • Pbrk. No. Komp. SHR100MA75
HOBUT 20 100 mA 75mV Plate ±1.5 % - - -
HOBUT Brass-Ended Shunt, 10 A, 60mV Output, ±1 % Accuracy HOBUT 19 10 A 60mV Brass-Ended ±1 % -20°C +40°C -
HOBUT Plate Shunt, 10 mA, 75mV Output, ±1.5 % Accuracy HOBUT 15 10 mA 75mV Plate ±1.5 % - - -
Murata Power Solutions Digital Shunt, 5 A, 50mV Output, ±0.25 % Accuracy Murata Power Solutions 15 5 A 50mV Digital ±0.25 % -40°C +60°C -
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