Key Features
High Accuracy: The 7550A boasts a typical accuracy of 0.01% of reading + 0.01% of range, ensuring precise measurements across its full range.
4 1/2 Digit Display: Equipped with a high-resolution display for enhanced readability of current measurements.
Built-in Over Current Protection: Safeguards the device against excessive currents, enhancing the durability and longevity of the instrument.
Excellent Temperature Stability: Features a temperature coefficient of less than 10 ppm/°C, ensuring consistent accuracy across varying environmental conditions.
Five Precision Selectable Ultra Stable Current Shunts: Shunt values range from 0.001Ω to 10Ω, allowing users to select the appropriate shunt for their specific application.
Expandable Measurement Capability: When paired with an external Digital Volt Meter (DVM) of 5 1/2 digits or higher, the system increases both resolution and current reading accuracy.
Technical Specifications
| Specification | Value |
| Current Range | 1μA ~ 250A |
| Shunt Values | 0.001Ω, 0.01Ω, 0.1Ω, 1Ω, 10Ω |
| AC/DC Accuracy | ≤ 0.05% of Reading + 2 counts |
| Max Input (AC/DC RMS) | 250A |
| Cooling | Force Fan Cooled |
| Weight | 7.0 kg |
| Dimensions | 420(W) x 88(H) x 325(D) mm |
| AC Power Supply | 115/230 Vac ±10%, 50/60Hz |
| Temperature Range | 0 to 40°C |
| Temperature Coefficients | Less than 0.001% per °C (0.2A, 2A) |
| Less than 0.002% per °C (20A) | |
| Less than 0.003% per °C (200A) |
Applications
Calibration: Ideal for calibrating AC and DC current meters, ensuring compliance with industry standards.
Testing: Widely used in laboratories for testing electrical equipment and power supplies, ensuring accurate performance measurements.
Research and Development: Essential in R&D environments for precision testing and experimental setups requiring high accuracy.
Order Information
Model: 7550A Precision Current Shunt
Included Components: Features four terminal networks with calibration adjustments for each network to ensure accuracy and ease of use.
Notes: AC accuracy is limited to 100A, and specifications may change without notice.
Conclusion
The 7550A Precision Current Shunt is a top-tier instrument that provides exceptional accuracy and reliability for a variety of applications in electrical testing and calibration. Its advanced features, coupled with a robust design, make it an indispensable tool for professionals in the field.