Energy Meter Shunts
Products Description
This Energy Meter Shunts is specifically designed for smart electricity meters, industrial relays, and high-precision current detection scenarios. It is made by combining copper and manganese-copper alloy (Cu-Mn-Ni) through an electron beam laser welding process and then precision stamping. Its key advantages lie in its extremely low resistance temperature coefficient (TCR ≤ ±5ppm/°C) and high thermal stability, making it suitable for long-term high-load current sampling and electric energy measurement.
Core selling points
Electron beam welding technology
Utilizes resistance butt welding silver contact technology to achieve oxygen-free bonding at the copper-manganese interface, eliminating resistance drift caused by thermal stress.
Ultra-low temperature drift characteristic
The manganese-copper alloy used in the Micro Ohm Manganin Welding Shunt Resistor has a TCR (temperature coefficient of resistance) of only ±5ppm/°C, significantly superior to traditional copper-nickel (±20ppm/°C).
High pulse tolerance
The Electric Current Measure Manganin Shunt supports instantaneous current overload of 3 times the rated value, suitable for transient current scenarios such as inverters and UPS.
Compact size
Press-formed thickness ranging from 0.2 to 5mm, Manganin Shunt Resistor is suitable for miniaturized meter design.
Technical features
No solder metallurgical bonding: Different from the traditional silver-based brazing process, electron beam laser welding achieves atomic-level bonding between purple copper and manganese copper, completely solving problems such as solder layer detachment and overheating. The traditional process defect of Silver Contact Brazing on Copper Bars is completely avoided, enhancing the long-term operational stability of the product.
Precise energy sampling: The low temperature coefficient characteristic of manganese copper alloy combined with precise stamping technology enables the sampling signal of Brass Terminal Lead Shunt Resistor to reach 0.5 grade accuracy, capable of accurately capturing current signals ranging from micro-ampere to kilo-ampere levels, suitable for advanced functions such as time-sharing metering and load monitoring in smart electricity meters.
Low loss and efficient conductivity: The high conductivity of purple copper substrate can control the conduction loss of Spot Welding for Manganin Shunt Resistor at the lowest level in the industry. Combined with the zero static power consumption characteristic of the magnetic retention relay, it helps power equipment achieve energy conservation and consumption reduction, conforming to the low-carbon development trend of new energy power equipment.
Optimized anti-electromagnetic interference: The sampling end of Terminal Block Manganin Shunt adopts a differentiated structural design, effectively eliminating the induced interference from alternating current magnetic fields, avoiding interference from metering signal superposition, and improving the accuracy of metering in outdoor and industrial strong electromagnetic environments.
Frequently Asked Questions
Can the resistance value of the shunt be customized?
Yes, we can customize shunts with different resistance values for the Prepayment Meter according to the customer's requirements.
What is the working temperature range of the shunt?
Our Primary Wire Manganin Shunt can operate normally within the temperature range of -55°C to +150°C.
What are the differences between the welding process of this product and the traditional silver contact welding?
This product uses electron beam laser welding to achieve a metallurgical bonding between purple copper and manganese copper, without a solder layer. This completely solves the problems of solder heating and solder detachment in the Copper Spot Welding Silver Contact process. While traditional silver contact welding has the drawbacks of high contact resistance and susceptibility to aging over time, the contact resistance of this product is ≤ 5mΩ, and the long-term operational stability is improved by more than 3 times.
How about the installation and adaptability of the product?
How about the installation and adaptability of the product?
The Cable Wire Shunt Resistor is equipped with standardized installation holes and sampling terminals, which can directly be adapted to the installation interface of general-purpose magnetic holding relays; at the same time, it supports customized terminal design based on the size and installation method of the customer's relay/electric energy meter, providing 2D/3D drawings to facilitate direct import into the automated assembly line for production.
contact us
Our Energy Meter Shunts possess advantages such as high precision, stability and reliability. They have broad application prospects in areas like electrical energy measurement and magnetic retention relays. By adopting advanced manufacturing technologies and strict quality control, we ensure the high performance and long service life of the products. We look forward to cooperating with global customers and jointly promoting the development of the power industry.
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