Shunt

A:shunt is essentially a fixed resistor with an extremely small resistance value but very high precision. It is typically made from low-temperature-drift alloy materials such as manganin or copper to ensure the resistance remains stable across different temperatures.

- Low temperature coefficient of resistance (TCR)
- High long-term stability
- Extremely low thermal internal resistance
- Low thermal electromotive force (for copper)
- Low resistance value reduces power consumption
- High mechanical strength

1.  New energy storage / PCS, battery BMS  
    Leveraging low TCR and high stability to accurately capture charge/discharge current over the long term, precisely calculate battery state of charge (SOC), avoid power metering deviations, and suit 24/7 continuous operation.

2.  DC charging piles, onboard electric control 
    High-current copper busbar structure withstands instantaneous inrush currents; low thermal internal resistance controls temperature rise, meeting high-power fast charging and long-term full-load operation.

3.  Smart electricity meters, precision programmable power supplies
    Ultra-low thermal EMF is a core requirement; small current sampling is immune to temperature difference interference, ensuring accurate meter billing and calibration of source/load equipment.

4.  Industrial inverters 
    Excellent linearity adapts to DC and low-frequency AC sampling; stably monitors input/output current to ensure precise triggering of overload and short-circuit protection.

5.  High-frequency inverter equipment
    Customized low-inductance (non-inductive) shunt structure reduces additional voltage drop errors caused by stray inductance at high frequencies, suitable for high-frequency switching power supplies and photovoltaic inverter sampling.

1.  Measurement accuracy advantages:
    - No zero-point drift
    -Ultra-low temperature drift
    -Low thermal EMF

2.  Cost advantages:
    -Lower procurement cost
    -Simpler peripheral circuitry

3.  Operational advantages:
    -Strong electromagnetic interference (EMI) immunity;
    -Excellent linearity across full current range, uniform error from small to full-scale current;
    -Withstands surge currents; high mechanical strength makes the shunt resistant to damage from short-term surges and inrush currents;

4.  Usage and lifespan advantages: 
    The shunt is a passive component with no aging or degradation.