Copper Manganin Shunt
Products Description
This product is a high-precision current shunting and sampling core component (Copper Manganin Shunt for Latching Relays) specifically customized for magnetic latching relays. Its core value lies in building a triple-core system of "precise current shunting + stable sampling + integrated adaptation." Through a complementary design of copper and manganin, a bimetallic metallurgical-grade composite is achieved via electron beam laser welding, followed by precision stamping. In the working circuit of the magnetic latching relay, it undertakes current shunting, signal sampling, and overcurrent monitoring functions, providing reliable data support for the relay's precise control and safety protection. Essentially, it provides a customized current shunting solution of "high precision + high stability + miniaturization" for magnetic latching relays in industrial control, automotive electronics, smart homes, and power equipment, perfectly matching the stringent requirements of relays for current response speed, sampling accuracy, and structural compatibility.
Main Functions: Focusing on Core Relay Needs
Precise Current Diversion Function
In the working circuit of the magnetic latching relay, the large current in the main circuit is diverted to the sampling circuit at a fixed ratio, providing an adaptation signal for current detection and ensuring the relay's accurate perception of the load current.
01
Current Signal Sampling Function
Through the precise resistance characteristics of the manganese-copper alloy, the Electrical Meter Shunt current is converted into a voltage signal, providing a stable sampling signal for the relay control chip, supporting functions such as overcurrent protection and load monitoring.
02
Overcurrent Protection Adaptation Function
When the circuit current exceeds the set threshold, an overcurrent signal is quickly fed back, cooperating with the relay to perform a disconnection action, preventing damage to the load equipment due to overcurrent and improving the safety of the circuit system.
03
Temperature Compensation Stabilization Function
The low temperature coefficient design maintains a stable resistance value in a wide temperature range environment, avoiding sampling errors caused by temperature changes and ensuring consistent control accuracy of the relay in different environments.
04
Structural Integration Adaptation Function
The compact structural design and standardized installation interface allow direct integration into the magnetic latching relay without additional adapter components, simplifying the relay assembly process and improving Relay Resistor Shunt integration.
05
Design Advantages: The Engineering Wisdom Behind Integration
Integrated Design Philosophy
We integrate the traditionally separate components of "bus" and "sensor resistor" into an inseparable whole. This not only reduces the number of Manganin Copper Shunts, assembly steps, and potential failure points, but also fundamentally improves the compactness and reliability of the relay's internal structure.
Metallurgical-Grade Interface-Free Design
Electron beam or laser welding is performed in a vacuum or protective atmosphere, utilising high energy density to instantly melt the interface between the two metals and induce atomic diffusion, forming a transition zone with continuous structure and gradual performance changes. There is no third solder, no binder, only a homogeneous new material with extremely excellent strength and conductivity. This is fundamental to achieving long-term stability for the Shunt Terminal for Magnetic Latching Ralay.
Optimized Geometric Design
The width, thickness, and length of the manganese-copper region, as well as the transition shape with the copper on both sides, are optimized through precise resistance calculations and thermal simulations. This ensures optimal heat distribution and minimal stress concentration while meeting target resistance and power requirements.
Advantages of Electron Beam Welding
Extremely High Energy Density and Narrow Heat-Affected Zone
The electron beam is focused to the micrometer level by an electromagnetic lens, generating instantaneous high temperatures in a very small localized area, causing the edges of the two materials to melt and fuse. The surrounding materials are almost unaffected by heat, preserving the original excellent properties of copper and E-beam Welding Shunt, and avoiding grain growth and performance degradation.
Vacuum Environment, Absolute Purity
The welding process is carried out in a high vacuum above 10^-3 Pa, completely eliminating oxidation and contamination of the molten metal by air. The weld purity is extremely high, ensuring the conductivity and long-term chemical stability of the interface.
Deep Fusion and Superior Strength
The penetrating power of the electron beam can form a weld with a large depth-to-width ratio, achieving full-thickness metallurgical bonding of the two materials. The bonding strength is close to that of the base materials themselves, capable of withstanding the stress of subsequent stamping processing and the thermal cycling stress during Magnetic Shunt Customized service.
Digitalized Process Parameters, Unparalleled Consistency
Parameters such as accelerating voltage, beam current, welding speed, and focusing current are all precisely controlled by a computer, ensuring that the weld quality of each composite strip is completely consistent, laying the foundation for parameter consistency in mass-produced Manganin Shunt Resistors.
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