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BR Series Rogowski Coil Flexible Current Transformer

Rated Current: Up to 10000A

High Accuracy Class 0.5

Excellent Linearity

Split Core Open Type

Zero Power Consumption

No Open-circuit High-voltage Hazard

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Describe

Acrel BR-Series Flexible Rogowski Coils deliver safe, wide-range AC current sensing from 0.1 A up to 500 kA. The lightweight, IP65-rated loop simply snaps around busbars or cables without disconnection, eliminating CT saturation and open-circuit hazards. Exceptional linearity, high bandwidth and minimal position error guarantee accurate power-quality, harmonic, ripple or transient capture when paired with power analyzers, loggers or portable meters. Custom lengths and diameters fit tight panels, large furnaces, welders or retrofits. Zero power draw, DC 4-20 mA / 200 mV outputs and immunity to stray fields make BR coils the go-to choice for energy audits, arc-fault studies and high-frequency inverter monitoring.

Specifications

Model	BR-90	BR-150	BR-200	BR-300
Perimeter	300mm	500mm	650mm	1000mm
Inner Diameter	90mm	150mm	200mm	300mm
Rated Current	1000A	2000-5000A	4000-8000A	5000-10000A
Weight	100-500g
Coil Resistance	50-500Ω
Max. Current	500kA
Cross-sectional Area	12mm
Signal Wire Length	2m, Customizable
Ratio	200±0.5%mV/kA@50Hz, Customizable
Accuracy	±1%
OA Output (Zero Drift)	≤1mV
Phase Angle Difference	≤0.5°
Linearity	±0.2%
Bandwidth	1Hz-10kHz
Working Temp.	-40℃-80℃
Storage Temp.	-50℃-90℃
Flame Retardant	Thermoplastic Rubber for Wires and Cables IEC-60332-1-2 Flame Retardant Class
Shielding	Coil: 100%, Signal Cable: 100%
Insulation Voltage	Coil: 3000V; Signal Wire: 300V

Dimension & Wiring Diagram

Blue: Class 1
Red: Class 0.5S

Application Scenario

About Acrel

"Optimized Energy Efficiency, Empower Green Future."

Founded in 2003, Acrel Co., Ltd.【Stock Code: 300286.SZ】 is a high-tech enterprise specializing in energy management solutions and electrical safety. Headquartered in Shanghai, Acrel offers innovative and sustainable solutions for microgrid energy efficiency and electrical safety. With over 600 patents and software copyrights, Acrel has deployed more than 28,000 system solutions globally, forming a comprehensive "cloud-edge-end" energy internet architecture.

Acrel's integrated product ecosystem spans from cloud platform software to end-user components, covering sectors such as power, renewable energy, data centers, smart buildings, transportation, and smart cities. These solutions enable intelligent, real-time energy management, enhancing energy security and reducing operational costs.

The company's production facility, Jiangsu Acrel Electric Manufacturing Co., Ltd., adheres to strict quality standards and environmental guidelines, with advanced testing centers and a commitment to lead-free production processes. Acrel's team of over 500 engineers delivers cutting-edge energy efficiency systems and smart energy solutions.

With a strong domestic presence, Acrel is actively expanding internationally, supported by a global network of sales and technical teams and an e-commerce platform that ensures seamless service experiences worldwide. Acrel is proud to help businesses improve efficiency, reduce consumption, and achieve sustainability goals.

Together, we are building a smarter, greener future.