Summary:A shunt is a specialized device that allows a single voltage source to connect to more than one circ...
A shunt is a specialized device that allows a single voltage source to connect to more than one circuit. Typically, it is made of bus bar copper or a standard commercial electrical conducting material. The shunt is composed of one or more shunt elements secured to two short sections of material. In some instances, a plurality of subassemblies is stacked on additional bus bar conductors to form a multiple instrument shunt.
The shunt resistor's resistance is a function of the alloy, its length, and the cross-sectional area. Pure copper alloys are 1.7 uohmcm in resistance and 43 uohmcm for manganin alloy. Because of this, it is crucial to sense the voltage across the shunt resistor with the least possible error. The designer of the shunt resistor will choose from several different sensing connections. The table below summarizes the key characteristics of each of the three.
The shunt must be placed in series with a load. The wiring from the shunt should be fed to the load in parallel with the battery pack. The shunt should be connected in series with the battery pack. It should be wired to an ammeter in parallel with the battery pack to ensure the shunt is connected to the load. Once the shunt has been installed, the battery pack should be linked to the right side of the shunt.
When the DC current shunt is used for measuring high currents, a special resistor is usually used. The shunt is wired in series with the heavy load. The DC voltmeter is then connected to the shunt via a four-wire configuration. The meter leads do not carry high currents but are finer gauges than the load circuit. When wiring the shunt, it is recommended to locate it on the grounded side of the load to minimize voltage at the shunt.
Shunt resistors are a class of passive electronic components. These devices are made from silicone elastomer and come in a variety of sizes, tip designs, and flow-hole configurations. Small shunt catheters are typically used in infants. Other types are packaged in standard-sized silicone elastomer tubing and stick magazines. The chip resistors have the shape of an IC chip. They are made using thin-film technology.
Shunt resistors should be placed carefully in order to protect the ammeter from excessive common-mode voltage. These leakage currents may pass undetected because the shunt resistor is close to the ground. To prevent this problem, use an isolation amplifier or voltage divider to separate the shunt resistor from the ground. Further, you can also use Hall Effect sensors to protect the measurement instrument from the common-mode voltage. In general, a shunt resistor is more accurate than a Hall effect current sensor.
Haiyan Weijia Electrical Technology Co., Ltd.
| Product: |
Shunt component |
| Composition: |
shrinkable tube, silicone tube, etc. |
| Material: |
Copper, manganese copper |
| Accuracy: |
± 5% |
| Process: |
Electron beam welding, brazing |
| Production: |
Production and processing |
China Manganin Shunts Manufacturers
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