Rogowski Coils are a highly versatile and modern solution for current measurement, especially in applications where traditional current transformers are difficult or impossible to install. Designed with flexibility and ease of use in mind, Rogowski coils are lightweight, non-intrusive sensors that can be wrapped around large, irregular, or tightly packed conductors without interrupting the electrical system. This makes them particularly suitable for temporary measurements, high-current environments, and fast-deployment energy monitoring tasks in industrial and commercial settings.
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Flexible wrap-around coil design allows easy installation around busbars, cables, and irregular conductors, even in tight or congested spaces
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Wide current measurement range, making Rogowski coils ideal for very high current applications where conventional CTs may saturate
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No magnetic core and no saturation, ensuring excellent performance during dynamic load conditions, transients, and fluctuating currents
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Lightweight and portable, enhancing safety and convenience for temporary or short-term installations
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Compatible with portable power meters, data loggers, and analyzers, making them ideal for field measurements and rental projects
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Fast installation and removal, reducing setup time for audits, diagnostics, and troubleshooting
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Excellent performance for large busbars and generators, where space constraints or conductor size limit the use of split-core CTs
Rogowski coils are commonly used in temporary power logging, rental and project-based monitoring, generator testing, and rapid field measurements where speed, flexibility, and high current capability are essential.
Comparison: Split-Core CT vs Rogowski Coil
| Feature | Split-Core CT | Rogowski Coil |
|---|---|---|
| Installation | Clamp-on | Flexible wrap-around |
| Best for | Permanent & retrofit EMS | Temporary & high current |
| Accuracy | High | Very good (with integrator) |
| High current capability | Limited by core | Excellent |
| Space constraints | Moderate | Excellent |
Choosing the right current sensor depends on your application, installation environment, and monitoring objectives. While split-core CTs are ideal for permanent and retrofit Energy Monitoring Systems, Rogowski coils excel in high-current, space-constrained, and temporary measurement scenarios.
Not sure which sensor suits your application? Talk to our engineer today and let ENERSIS help you select the most reliable and efficient current measurement solution for your project.
