Energy Meter Shunt Resistor | Low TCR Current Measurement Solution
- Application: KWh meters, energy metering, industrial ammeters
- Resistance range: 30μΩ to 1200μΩ
- Accuracy class: Class 1.0
- Structure: Electron-beam welded for high stability
- Tolerance: ±2% to ±5%
Description
Overview
Energy Meter Shunt Resistor for Accurate Current Measurement
Energy Meter Shunt Resistors are precision low resistance components designed to measure electrical current in smart meters, kWh meters, and industrial energy monitoring systems. By generating a stable voltage drop proportional to current flow, they enable accurate energy measurement and reliable current sensing.
Featuring low temperature coefficient (TCR), excellent thermal stability, and consistent resistance performance, these meter shunt resistors maintain measurement accuracy under different operating temperatures. They are widely used in residential electricity meters, industrial power meters, and DC energy monitoring applications requiring long-term reliability.
Manufactured with manganin or CuMn alloy materials, our energy meter shunt resistors provide low thermal EMF, oxidation resistance, and customizable resistance values for OEM meter designs.
| Parameter | Range / Value | Remarks |
|---|---|---|
| Resistance Range | 50 µΩ – 50 mΩ | Customizable |
| Tolerance | ±0.1%, ±0.25%, ±0.5%, ±1% | According to design |
| TCR | ±15 ppm/°C – ±100 ppm/°C | Stable in long-term use |
| Operating Temperature | -55°C to +150°C | Harsh industrial environments |
| Rated Power | 1W – 15W | Depending on structure |
| Material | Manganin / Copper Alloy | High thermal stability |
Types and Dimension
Shunt Resistor Selection Guide
| Application | Type | Max Current (Imax) | Accuracy Class | Thickness (mm) | Resistance (μΩ) | Tolerance |
|---|---|---|---|---|---|---|
| kWh Energy Meter | Electron Beam Welding Shunt | 10A | Class 1.0 | 1.0 | 800–1200 | ±2–5% |
| Electron Beam Welding Shunt | 40–60A | Class 1.0 | 1.0–1.2 | 250–500 | ±2–5% | |
| Electron Beam Welding Shunt | 80A | Class 1.0 | 1.5–2.0 | 150–250 | ±2–5% | |
| Electron Beam Welding Shunt | 100A | Class 1.0 | 1.5–2.0 | 100–200 | ±2–5% | |
| Electron Beam Welding Shunt | 120A | Class 1.0 | 1.5–2.0 | 100–180 | ±2–5% | |
| Electron Beam Welding Shunt | 200A | Class 1.0 | 2.0–2.5 | 30–80 | ±2–5% |
Applications of Energy Meter Shunt Resistors
- Smart electricity meters
- kWh energy meters
- Industrial power meters
- DC energy monitoring systems
- Power analyzers
- Energy management equipment
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FAQ
What is a meter shunt resistor?
A meter shunt resistor is a low resistance component used for accurate current measurement in energy meters by generating a small voltage signal.
Why are shunt resistors used in energy meters?
They provide stable and accurate current sensing with low power loss for smart meters and kWh meters.
What materials are used for meter shunt resistors?
Common materials include manganin and CuMn alloys, offering low TCR and stable long-term performance.
Can meter shunt resistors be customized?
Yes. Resistance values, current ratings, dimensions, and terminal designs can be customized for different meter applications.
