Products Description
The Electron Beam Welding Shunt Resistor is a current-sensing component designed specifically for magnetic latching relays; it is manufactured by metallurgically bonding Manganin (MnCu) and oxygen-free copper (Cu) strips using electron beam welding technology, followed by precision stamping. Leveraging the low temperature coefficient of Manganin, this component enables high-precision current sensing and is widely used in smart meters, industrial control systems, and new energy metering applications.
Manufacturing Advantages
Advanced Electron Beam Welding Process
We utilize high-power electron beam welding machines for Resistor Manganese Shunt for Electric Meter operating in a vacuum environment, achieving energy densities exceeding 10⁶ W/cm². During welding, the electron beam is precisely focused on the interface between the Manganin and pure copper, creating a weld penetration with an aspect ratio greater than 5:1 and ensuring the weld is free of porosity and slag inclusions.
Fully Automated Stamping Production Line
Following welding, the composite strip enters a high-speed, precision stamping line equipped with an in-line visual inspection system, capable of producing 120–180 finished Manganin Shunt with 100A for Electrical per minute. The stamping dies are made of cemented carbide and offer a lifespan exceeding 500,000 cycles between regrinds, ensuring batch consistency.
Material Traceability System
Every incoming coil of Manganin and pure copper strip is assigned a unique batch number, enabling full forward and backward traceability from raw material intake to the shipment of finished products. This meets the fundamental requirements of the ISO 9001 and IATF 16949 standards for Manganin Shunt for Energy Meter.
Key Functions
What are the primary functions of the Ebw Manganin Shunt for Electronic Meter? It facilitates current-to-voltage conversion via a known low resistance value, providing precise current sampling signals for magnetic latching relays and supporting functions such as energy metering, overcurrent protection, and status monitoring.
Specific functions include:
Current Shunting: Diverts the majority of the current through itself, reducing the load on the sampling circuit for Resistor Manganese Shunt for Electric Meter.
Voltage Sampling: Generates a small voltage drop proportional to the current across the Manganin section, enabling signal acquisition by the chip.
Thermal Management: Oxygen-free copper terminals rapidly conduct heat, maintaining overall temperature stability.
Structural Support: Stamped Manganin Shunt with 100A for Electrical facilitate installation via welding or bolting.
Detail Overview
Metallographic cross-sections of the welded interface reveal a uniform fusion layer between the manganin and oxygen-free copper, with no porosity, cold joints, or cracks; the atoms of the two metals have fully interdiffused for Manganin Shunt for Energy Meter.
Stamped edges undergo deburring to eliminate sharp metal burrs, preventing injury to operators or damage to surrounding PCBs during installation.
The inner edges of the mounting holes are chamfered to prevent stress concentration when bolts are tightened, ensuring the holes do not crack under conditions of prolonged vibration for Resistor Manganese Shunt for Electric Meter.
The tin plating on the copper terminal is uniform with no uncoated areas, ensuring no cold joint issues occur during 260°C reflow soldering of Ebw Manganin Shunt for Electronic Meter.
contact us
The Electron Beam Welded Shunt Resistor is a critical component for accurate current sensing in precision electrical devices, such as magnetic latching relays. If your project requires a reliable shunt solution, please contact us with your technical specifications and application details; our engineering team will provide expert selection support and a customized quote to help accelerate your product's market launch and enhance its performance.
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