Rogowski Coils

Empower your power monitoring systems with Frigate’s high-precision, flexible Rogowski Coils, engineered for seamless integration into high-current and transient electrical environments. Designed with a non-magnetic core, these flexible current sensors eliminate magnetic saturation risks while delivering exceptional linearity and accuracy for demanding industrial grids.

Current Range

10A to 100kA+

Accuracy Class

Class 0.5 (IEC 61869-10)

Output Signal

mV/kA @ 50/60 Hz (Integrator required for AC current output)

Linearity

± 0.2% from 1% to 100% of rated current

Frequency Range

10 Hz to 20 kHz

*Note: All listed timeframes are indicative and depend on component availability, custom specifications, and engineering review. Final timelines are confirmed upon order placement.

Product Description

Frigate’s Rogowski Coils provide a lightweight, split-core sensing solution that easily wraps around large or irregular conductors without disrupting active electrical systems. Offering an expansive dynamic range and wide frequency response, they are the ideal choice for modern power quality analysis, energy management, and robust sub-metering applications.

Phase Error

≤ 0.5° at 50/60 Hz

Insulation Voltage

1kV CAT III, 600V CAT IV

Dielectric Strength

5.4 kV AC for 1 minute

Operating Temperature

-30°C to +80°C

Coil Thickness (Diameter)

8 mm ± 0.5 mm

Window Diameter (Internal)

60 mm, 100 mm, 150 mm, 200 mm (Customizable)

Cable Length

2 meters (Standard); shielded coaxial

Material/Enclosure

UL94-V0 rated flame-retardant thermoplastic

IP Rating

IP67 (Dust tight and water immersion resistant)

Standards Compliance

CE, RoHS, IEC 61869-10 compliant

Technical Advantages

By eliminating the heavy magnetic cores of traditional current transformers, these lightweight coils offer perfect linearity across high currents with zero risk of saturation. Additionally, their highly malleable, split-core form factor allows technicians to easily wrap them around irregular conductors in seconds without pausing active operations.

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Industry Applications

Power Quality Monitoring

Enables precise tracking of harmonics, voltage sags, swells, and transient current spikes in sensitive corporate grids and heavy industrial facilities.

Renewable Energy Systems

Integrates easily inside wind turbine nacelles and solar inverter stations to handle rapidly fluctuating currents and high-frequency noise.

Electric Vehicle (EV) Charging

Provides space-saving AC and DC side current leakage sensing and load management within commercial high-power fast-charging infrastructure.

Smart Grids & Substations

Monitors distribution overhead lines and underground MV/HV substations, delivering crucial real-time grid telemetry for automated load balancing.

Industrial Automation

Tracks the power health of large electric arc furnaces, heavy-duty welding equipment, and variable frequency motor drives during high-surge operations.

Energy Management & Auditing

Allows energy auditors to quickly deploy split-core coils in existing facility electrical panels for retrofitted sub-metering and usage tracking.

Frigate Approved Quality Management System

At Frigate, quality is built into every stage of manufacturing. Our approved Quality Management System ensures that every material component.

Incoming Material Checking

Before production begins, all incoming materials are checked against specifications, drawings, and supplier documents.

In-Process Inspection

Quality is monitored during manufacturing to prevent defects and maintain process consistency.

Final Dimensional Checking

Finished parts are inspected before dispatch to confirm compliance with customer drawings and tolerances.

Packaging Control

Finished components are packed safely to prevent damage during handling and transportation.

Incoming Material Checking

In-Process Inspection

Final Dimensional Checking

Packaging Control

Quality Document

To help buyers evaluate our quality systems, we provide sample documents that reflect our inspection and reporting standards.

How We Delivered

Complex geometries engineered solutions that move businesses forward.

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units per month

Bento Boxes for D2C Segment

Units Manufactured Monthly

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Defence-Grade Cable Supply

Cost savings

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Flange Assembly for Pump

Faster Production

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Having Doubts? Our FAQ

Can Frigate customize the coil length and internal diameter for specific industrial busbars?

Yes. Frigate provides fully tailored manufacturing for OEM requirements. We can customize the window diameter, rope length, and output leads to seamlessly match your specific space constraints and busbar cross-sections.

Do these Rogowski Coils require an external integrator to function?

Yes, Rogowski coils produce a voltage that is proportional to the derivative of the current. An electronic integrator or amplifier circuit is required to convert this signal into a standard 0-5V, 4-20mA, or 1A/5A AC signal for meters and PLCs.

How does Frigate ensure the accuracy of the coil if it is positioned unevenly around a conductor?

Our advanced, precise winding techniques minimize the effects of conductor positioning and external electromagnetic field interference. For maximum accuracy, centering the conductor inside the loop is recommended, though our high-reproducibility winding mitigates position-induced errors.

What raw materials do you use to ensure these coils withstand harsh, outdoor environments?

We use high-grade, UV-stabilized, and flame-retardant thermoplastics (UL94-V0 rated) for the flexible outer sleeve, paired with IP67-rated connectors. This ensures structural integrity against moisture, dust, chemical exposure, and temperature cycling.

What are your quality control procedures before a batch is dispatched from Frigate?

Every single Rogowski coil undergoes stringent routine tests, including insulation resistance checks, high-voltage dielectric testing, phase error validation, and linearity mapping against calibrated current standards. We supply full test documentation upon request.

We'd love to Manufacture for you!

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LOCATIONS

Registered Office

10-A, First Floor, V.V Complex, Prakash Nagar, Thiruverumbur, Trichy-620013, Tamil Nadu, India.

Operations Office

9/1, Poonthottam Nagar, Ramanandha Nagar, Saravanampatti, Coimbatore-641035, Tamil Nadu, India. ㅤ

Other Locations

GENERAL ENQUIRIES

LOCATIONS

Registered Office

10-A, First Floor, V.V Complex, Prakash Nagar, Thiruverumbur, Trichy-620013, Tamil Nadu, India.

Operations Office

9/1, Poonthottam Nagar, Ramanandha Nagar, Saravanampatti, Coimbatore-641035, Tamil Nadu, India. ㅤ

Components Built for Critical Performance

Engineered Products for Critical Applications

Rogowski Coils

Product Description

Phase Error

Insulation Voltage

Dielectric Strength

Operating Temperature

Coil Thickness (Diameter)

Window Diameter (Internal)

Cable Length

Material/Enclosure

IP Rating

Standards Compliance

Technical Advantages

Let's Get Started

Industry Applications

Frigate Approved Quality Management System

Quality Document

How We Delivered

Having Doubts? Our FAQ

We'd love to Manufacture for you!

LOCATIONS

Registered Office

Operations Office

Other Locations

GENERAL ENQUIRIES

LOCATIONS

Registered Office

Operations Office

Other Locations

GENERAL ENQUIRIES

Get Your Quote Now

Rogowski Coils

Get Latest Price

Rogowski Coils

Get Latest Price