CWTUM-S Rogowski Coil Application

New Product - Available Now

Decoding the Language of Current

Transform your approach to non-invasive, wideband AC current measurement with our innovative CWT range.

CWTHF Rogowski Coil around a brass bar

Innovation that drives Performance

Unlock the power of measuring wide-bandwidth AC currents with our market-leading Rogowski transducers.

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Reliability Every Current, Every Day

Harness the power of uninterrupted AC current monitoring with our industry-leading RCT range.

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Market Leaders in Rogowski Probes

We are committed to delivering the highest level of quality to our customers, ensuring that every product and service we provide meets their expectations.

PEM at a glance

PEM's groundbreaking work continuously developing and improving wide-band Rogowski coil-based sensors supports industries such as power semiconductors, electric vehicles, motor drives and renewable energy, providing solutions that meet evolving technological demands, and contributing to enhanced efficiency, safety, and performance.

15
Patents and technical publications
165K
AC Rogowski probes sold
88
Countries empowered by our AC Rogowski probes

PEM Announcements and Updates

CWTUM S Hero

New from PEM - CWTUM-S

Designed to keep pace with increasingly compact and lower profile power devices, the CWTUM-S ultra-thin 1.2mm coil can slip into compact layouts in energy dense circuits. Despite a thickness of just 1.2mm it retains a 1.2kV peak insulation capability and 125oC maximum operating temperature. Its bandwidth, spanning a few Hz to 30MHz, captures low and high frequencies crucial for in-depth performance analysis, while its peak current range enables its use monitoring in low-power devices through to high power converters.

CWTMini50HF used in example application

CWTMini50HF to supersede the CWTMiniHF

From January 2025, the CWTMini50HF will supersede the CWTMiniHF in our CWT range. CWTMini50HF is a significant evolution of the CWTMiniHF and delivers improved high frequency performance with a faster response time for transient measurements. The CWTMini50HF range has been expanded to include, 2kV and 5kV peak coil insulation voltages, as well as longer coil lengths. This upgrade underscores PEM's commitment to advancing technology and meeting the evolving needs of the industry.

Die messung the history and development of the rogowski coil 1912 1950

The history of the Rogowski coil (1912 - 1950)

Read about the early history of the Rogowski coil, from its theoretical proposal in 1912 as a current measurement device to its gradual refinement by 1950. Over four decades, the coil’s design and principles were studied, yet it remained a work in progress. Despite its experimental nature, it represented a valuable step forward in electrical engineering, sparking interest for future development.

2024 Homepage New Website

PEM New Website

Welcome to our brand-new website! We’re thrilled to introduce this refreshed communications platform, designed to showcase the heritage, excellence, and innovation that define PEM. Beyond celebrating our legacy, this site has been crafted to provide you with a seamless and engaging customer journey, offering easy access to our products, services, and expert resources.

PEM's groundbreaking work in Rogowski coil-based sensors

Technical support and services from PEM

Repairs, Calibration and Design

Our comprehensive services include custom design solutions for unique current measurement needs, precise calibration services, and expert servicing & repair for Rogowski coils, ensures optimal performance and longevity for your current sensing equipment.
Explore our services
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Technical Resources

Technical notes, instruction sheets, datasheets, dimensional drawings, CAD files, and compliance documents can be accessed and downloaded.
Technical Resources
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