Precision shunt resistor and manufacturing method thereof

Abstract

The invention provides a precision shunt resistor and its producing method, and it is composed of a resistor body and a bus bar made of red copper plate, and it has the character: it adopts a manganin plate with a temperature coefficient less than 20ppm as the resistor body and there is a transition manganin-red copper alloy band with temperature coefficient less than 50ppm, formed by electronic beam welding and fusion, between the resistor and the bus bar. There are installation holes and a voltage end. It has the advantages of low temperature coefficient, high reliability, heavy current rating, small bulk, convenient use, etc. Its producing method has a few production procedures, and high production efficiency, convenient for automatic production and at the same time can effectively assure it has better thermal stability and very high reliability.

Description

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AI Technical Summary

Benefits of technology

This patented technology describes an improved type of precise shunresistor made of metal (Mn) plates called cupronickers or ternary alloys containing nickel cobalt chromium iron). These materials improve its performance compared to existing designs while reducing costs associated with manufacturing them. They allow for better connections between components such as terminals and instrumentation devices without increasing their weight. Additionally, they provide excellent electrical conductivity when used together, making possible higher temperatures during operation. Overall these technical improvements enhance the quality and durability of precision shunted resistors.

Problems solved by technology

Technological Problem: Current methods such as measuring electricity require accurate measurements over wide ranges of currents or voltages due to their importance in various applications like power distribution systems. However, traditional electrical devices have limitations when they handle very tiny amounts (<10 mA) of energy per unit area. These issues limit how much more precise electronic equipment needs to operate properly without generating too much excessive heat during operation. To address this problem, there was developed an alternative solution called High Precise Electroreflector (HPIR). HPRI uses special materials made from conductivity type insulation material to improve its ability to absorb light waves caused by incident solar radiation. By connecting multiple layers of metal wires together, the device becomes less prone to failure even if exposed to extreme temperatures. Additionally, while producing the desired results requires complicated processes involving numerous steps, making them expensive compared to regular ones.

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