Energy Meter Shunt Resistor 100A 75mV | Electron Beam Welded
- 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
The Energy Meter Shunt Resistor series is designed for high-accuracy DC current measurement in kWh electricity meters and energy monitoring systems. Based on electron-beam welded copper and manganin technology, these shunt resistors provide stable voltage drop performance, low resistance drift, and reliable long-term operation for smart meters and industrial metering applications.
What is an Energy Meter Shunt Resistor?
Electron-beam welding technology. 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 Resistor
- Ultra-low resistance: 30μΩ to 1200μΩ, suitable for high-current sensing
- Optimized for precise current measurement in energy meters.
- High accuracy: Metering accuracy: Designed to meet Class 1.0 energy meter requirements with stable resistance performance.
- 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% |
Typical Applications of Energy Meter Shunt Resistors
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
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Frequently Asked Questions (FAQ)
What is an energy meter shunt resistor?
An energy meter shunt resistor is a precision current sensing component used in kWh meters and energy monitoring systems. It provides a stable voltage drop for accurate current measurement and power calculation.
Why are manganin materials used in energy meter shunts?
Manganin alloy offers low temperature coefficient of resistance (TCR), excellent stability, and reliable electrical performance, making it suitable for precise current measurement applications.
What current ratings are available for kWh meter shunt resistors?
Our kWh meter shunt resistors are available for various current ratings, typically from 10A to 200A. Custom resistance values, dimensions, and terminal configurations are available according to application requirements.
Can you customize shunt resistors for smart meters?
Yes. We can customize shunt resistors based on current rating, resistance value, voltage drop, mechanical dimensions, and connection requirements to meet different smart meter designs.
