Rogowski Coil
A Rogowski coil is an air‑core toroidal AC current transformer designed for alternating and pulsed current measurement. Without an iron core, it avoids magnetic saturation, providing outstanding linearity even under extremely high‑current conditions. Offered in flexible and rigid versions, it enables quick, convenient on‑site mounting with fast transient response for power quality monitoring, harmonic analysis, renewable energy facilities and heavy‑duty industrial systems.
It requires a matched integrator to convert its differential‑voltage output into usable standard signals. Build your full power‑measurement solution with our complementary products: current transducers, conventional current transformers, and digital panel meters for signal conditioning, data acquisition and local on‑panel read
Features
No Magnetic Saturation
Air‑core design avoids saturation even under high current input.
Excellent Measuring Linearity
Maintain stable measuring accuracy with excellent linear output.
Flexible & Easy Installation
Split flexible coil enables retrofitting without power shutdown.
Wide‑Frequency Response
Suitable for AC, pulse current and harmonic signal measurement.
Applications
Rogowski coils are widely used in motor monitoring & protection, solar Power Generation, charging‑pile AC‑side current detection.
Motor Monitoring & Protection
Rogowski coils fit well for complex industrial drive scenarios with fluctuating and impulse current signals. They achieve high‑precision transient current acquisition for running motors, effectively capturing overload, short‑circuit and abnormal working conditions.
Such sensing capability supports real‑time status monitoring and timely fault protection, avoiding equipment burnout and unplanned production shutdowns in heavy‑duty manufacturing sites.
Solar Power Generation
Solar power systems generate fluctuating output current affected by changing solar irradiance and ambient conditions. Rogowski coils are well‑suited to sample dynamic output current of photovoltaic inverters under harsh on‑site installation environments.
They deliver reliable current data for grid‑connection control and power quality evaluation, ensuring safe, stable and high‑efficiency operation of large‑scale solar power generation facilities.
Charging‑pile AC‑side Current Detection
EV charging scenarios face frequent load variation and potential surge interference on AC input sides. Rogowski coils conduct non‑intrusive high‑accuracy current measurement for charging pile AC‑side circuits.
Collected data serves for real‑time safety monitoring, abnormal current alarm and metering‑related analysis, strengthening operational reliability for public and commercial electric‑vehicle charging infrastructure.
Product Advantages
Professional R&D Capabilities
Our in‑house R&D team consists of senior electrical engineers and measurement specialists. We focus on Rogowski coil sensing technology, continuously optimizing coil structure and signal processing to deliver high‑performance solutions tailored for diverse industrial measurement scenarios.
High Precision
Featuring excellent transient response and wide measurement range, our Rogowski coils capture impulse, surge and harmonic signals. They maintain stable output even under heavy‑duty, high‑interference conditions for reliable current monitoring.
Flexible & Easy‑to‑install Design
Adopting flexible open‑loop structure, our coils support live‑line retrofitting without power cut‑off. They fit tightly into narrow cabinet spaces, enabling fast on‑site wiring and greatly lowering installation downtime for renovation projects.
Strict Quality Assurance System
As a professional manufacturer, we enforce full‑process quality control from raw to finished goods. Our products follow industrial standards, ensuring consistent reliability for power, new‑energy and automation applications.
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Company Advantages（Why choose us）
No experience required. The agent will guide you in every step.
Custom‑Made Production
We support customized Rogowski coils to match different current‑measurement requirements, with flexible specifications for diverse power & industrial scenarios.
Stable Quality & Strict Testing
All products undergo rigorous performance testing, delivering high‑precision, reliable current‑sensing performance for long‑term stable operation.
Reliable After‑sales Support
Testimonials
Liam Smith
The high‑precision Rogowski coils deliver stable measurement performance, perfectly meeting our power‑monitoring project requirements.
Mia Garcia
Customization service is fantastic. They tailored the sensor to our specific working conditions, with reliable and consistent output.
Sophia Johnson
Fast lead‑time and competitive pricing. Technical support team offered clear guidance for our installation and commissioning.
Ethan Taylor
Great build quality, low‑noise sensing solution. We have been using these current sensors for months without any failure.
FAQs
For inquiries about Rogowski coil specifications, models and custom services.
Related Blogs
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A Rogowski coil is a flexible, air-cored current transducer widely used to measure alternating current, pulsed current and fast transient current. Unlike traditional current transformers built around ferromagnetic cores, it contains no magnetic iron core, which eliminates saturation effects and allows measurement of extremely large current values. Its unique structure and operating principle make it indispensable in power electronics, high-voltage testing and industrial power monitoring.Industry Information -
A Rogowski coil is an electrical device used to measure alternating current (AC) with high accuracy, excellent linearity, and a wide dynamic range. It belongs to the family of non-intrusive current sensors and is commonly used in power monitoring, protection systems, and industrial automation. Unlike conventional current transformers (CTs), a Rogowski coil does not contain magnetic cores. Instead, it is made of a uniformly wound helical coil placed around the conductor being measured. The absence of a magnetic core gives it several advantages, including immunity to core saturation, lightweight structure, and excellent performance in measuring rapidly changing currents.Industry Information -
Rogowski coils are flexible, air-cored current sensors designed to measure alternating currents without direct electrical contact. They consist of a helical coil wrapped around a conductor, generating a voltage proportional to the rate of change of current. Rogowski coils are lightweight, non-intrusive, and capable of measuring high current levels with wide frequency response. They are ideal for applications requiring accurate current monitoring in power systems, industrial machinery, renewable energy installations, and fault detection. Their openable and flexible design allows easy installation around existing conductors, making them highly suitable for retrofitting and temporary measurements.Industry Information
Keep in Touch With Us
Interested in our Rogowski coils? Whether you need product details, quotes or selection support, fill in the form and we will promptly provide you with the best‑fit solution.
Mob：+86-17805154960
E-mail：export@hbtianrui.com
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