Electron-Beam Current Measurement Resistor Energy Meter Shunt
- 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 series is engineered for high-accuracy current measurement in energy meters, especially KWh meters and industrial-grade ammeters. Designed for compact devices requiring reliable long-term precision, these resistors combine mechanical robustness with excellent electrical characteristics.
What is an Electron-Beam Energy Meter Shunt ?
An electron-beam shunt resistor uses welded copper and manganin to achieve low resistance and high precision. The welding process reduces contact resistance, maintains a stable voltage drop, and improves thermal performance. As a result, engineers often choose it for smart meters, solar inverters, and compact current-sensing modules.
Key Features of Energy Meter Shunt
- Ultra-low resistance: 30μΩ to 1200μΩ, suitable for high-current sensing
- High accuracy: Class 1.0, with tolerance options from ±2% to ±5%
- Durable structure: Electron-beam welded construction ensures long-term mechanical and electrical stability
- Flexible connection: Available with soft wire leads or direct PCB-mountable pads
- Customizable formats: Pin layout and body dimensions tailored to meet IEC or BS metering standards
- Material composition: Copper–Manganin–Copper for optimized conductivity and minimal drift
Explore our complete range of current sense resistors or get in touch for custom-built shunt resistor configurations.
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
These resistors are widely used in:
- KWh electricity meters
- Energy consumption monitoring
- Smart grid measurement modules
- DC current sensing in solar inverters and EV chargers
- Industrial process automation and metrology instruments
For more technical insights on electron-beam welding in resistor manufacturing, refer to this IEEE paper on resistive element joining techniques.
