Precision Metal Strip Shunt
Product Introduction
A precision metal strip shunt is a high-precision resistive element used for accurate current detection and sampling. The product uses a resistive strip made of manganese-copper alloy or special metal materials to generate a small and linear millivolt-level voltage signal when high current passes through it, thereby providing an accurately convertible sampled voltage to instruments, control modules, or monitoring systems. This series of shunts adopts a fixed structure, with accuracy classes reaching 0.5 class (2A–4000A) and 1 class (5000–6000A). It features good stability, low temperature drift, high mechanical strength, and excellent long-term reliability, and can be widely used in power supplies, battery management, instrumentation, and industrial control systems.
Product Parameter Overview
| Item |
Parameter Overview |
| Accuracy Class |
0.5 (2–4000A), 1 (5000–6000A) |
| Rated Current Range |
2A to 6000A, multiple specifications available |
| Temperature Rise Requirement |
Temperature rise ≤80℃ at current ≥ 50A |
| Mechanical Shock Capacity |
70m/s² Acceleration, 80–120 cycles/min for 5 hours |
| Dimensions |
Multiple sizes (e.g., L: 100–175mm, B: 20–130mm, etc.) |
| Mounting |
Screw mounting, M5/M8/M10 and other sizes |
Excellent Performance Characteristics
1. High Stability and Low Temperature Drift Resistance Material
The shunt uses high-precision metal alloy materials (such as manganese copper), possessing excellent temperature stability, ensuring consistent millivolt output signals across various temperature environments. This design ensures long-term reliable measurement accuracy, making it particularly suitable for high-current, high-power environments.
2. Excellent Mechanical and Environmental Adaptability
The product has undergone rigorous mechanical shock testing and can withstand continuous vibration and impact during transportation or equipment operation. It has a wide operating temperature range and strong humidity tolerance, making it suitable for measurement tasks in complex industrial environments.
3. Comprehensive Overload Protection
The shunt can operate continuously for 2 hours at 120% of its rated current, ensuring stable resistance and accurate measurement without drift. Under high current (≥50A) conditions, the temperature rise remains below 80℃, ensuring a long service life.
Typical Application Areas
- Power Supply and Power Systems: Used for current monitoring in DC power supplies, power modules, UPS, and power distribution systems.
- Battery Management System (BMS): Used for sampling the charging and discharging current of new energy batteries and energy storage batteries.
- Instrumentation: Used as a core sampling element in ammeters, amperemeters, and monitoring instruments.
- Motor and Drive Systems: Used for current control and protection in industrial motors, servo drives, and elevator control systems.
- Charging Piles and New Energy Equipment: Monitors high-speed, high-current operation, improving safety.
