Product Overview
The RTBS0200 series precision shunt resistors are designed for high-current applications requiring accurate current measurement. They feature low temperature coefficients, low thermal EMF, and high stability, ensuring reliable performance across a wide temperature range. These shunts are ideal for applications where precise detection accuracy is critical, even under varying load conditions and environmental temperatures. The series offers a standard accuracy of 0.1% and is available with various output voltages.
Product Attributes
- Brand: (Shenzhen Kaibu Electronics Co., Ltd.)
- Material: Precision Alloy (Manganese Copper mentioned in text)
- Origin: China (implied by company location)
- Certifications: Not specified
- Color: Not specified
Technical Specifications
| Model | Rated Current | Output Voltage | Resistance | Sampling Accuracy | Temperature Coefficient | Max Current | Weight |
|---|---|---|---|---|---|---|---|
| RTBS0200B050Z00 | 200A | 50mV | 250 | 0.1% | 20ppm/ | 240A | 38410g |
| RTBS0200B075Z00 | 200A | 75mV | 375 | 0.1% | 20ppm/ | 240A | 37510g |
Performance and Indicators
| Test Item | Measurement Location | Parameter Index |
|---|---|---|
| Operating Temperature Range | Resistance Alloy Center | -40~+140 |
| Best Surface Temperature | Resistance Alloy Center | +30~+90 |
| Maximum Surface Temperature | Resistance Alloy Center | +140 |
| Thermal EMF | Measured after reaching thermal equilibrium at rated current | <0.05 V/ |
| Temperature Coefficient | Measurement range -25 and +120, reference point +25 | 20ppm/ |
| Current Coefficient | Loading 10% rated current to 100% rated current | 5ppm/A |
| Short-time Overload | Loading 2.25 times rated current, lasting 5 seconds | R 0.1% |
| Continuous Overload | Loading 1.2 times rated current, lasting 2 hours, +25 ambient temperature | R 0.05% |
| Thermal Equilibrium Time | Temperature of resistance alloy is stable after power-on, shunt resistance is stable | <5min |
Installation Recommendations
Ensure tight contact and large contact area between the shunt copper head and the busbar. Increase busbar size and ensure surface cleanliness where possible. Recommended working current should not exceed 2/3 of the rated current under normal application. Derate usage in ambient temperatures above +40. Cooling methods such as air/water cooling, increasing physical size, or installing heatsinks can be used to reduce working temperature. Wear gloves during installation to prevent oil contamination. Busbar surfaces should be flat and smooth, with nickel or tin plating recommended to reduce contact resistance. Recommended installation torque: M3: 0.4~0.8 N.m, M8: 10~15 N.m.
Safety Storage
Store in a temperature of +5 to +35, humidity <60% RH, avoiding direct sunlight and harmful gases. Store in a clean, dry environment. Use dedicated gloves when handling to minimize surface oxidation. Minimum storage life of 1 year under specified conditions.
Packaging
Minimum packaging is 1 unit. Vacuum sealed packaging internally, with a custom outer box.
CTS Service (Customized Tuning Service)
Free customized tuning service to optimize detection accuracy for specific application scenarios. Involves precisely adjusting resistance to balance surface temperature at different current loads. Requires customer to provide data including minimum/maximum working current, current curve, product name, location, design life, temperature range, installation method, and cooling conditions. Each customized part receives a unique identification code and a complete factory test report.
2311171201_RESI-RTBS0200B050Z00_C7353943.pdf
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