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lem

High-isolation current sensors handle overload current bursts up to 20 kA

December 9, 2019 By Aimee Kalnoskas Leave a Comment

HMSR current sensors

LEM has expanded its range of miniature, integrated circuit sensors for AC and DC isolated-current measurement with the introduction of their new HMSR series. Despite being a small size, these components can handle overload current bursts up to 20 kA (8-20 µs surge test profile), such as those that occur in photovoltaics applications, while still providing a […]

Filed Under: Power Management Tagged With: lem

Rogowski coils optimized for smart grid apps

December 3, 2019 By Aimee Kalnoskas 1 Comment

Rogowski coils

In response to the need for improvements in electrical parameters measurement support for the expanding Smart Grid, LEM announces the development of the ARU Rogowski coils range to measure current up to 300,000 A AC with accuracy class 0.5.  The ARU range achieves IEC 61869-10 class 0.5 without the need for additional components such as […]

Filed Under: Power Components, Transformers Tagged With: lem

Digital integrator for Rogowski Coils offers wide range of standard analog True RMS, instantaneous outputs

May 13, 2019 By Aimee Kalnoskas Leave a Comment

digital integrator

LEM introduces the AI-PMUL integrator to complete its flexible clip-around Rogowski coil offering. AI-PMUL is a versatile digital signal conditioner of Rogowski coils secondary signal which offers a wide range of standard analog True RMS and instantaneous outputs. The Rogowski coils output voltage is proportional to the derivative of primary current. An electrical integrator circuit […]

Filed Under: Power Components Tagged With: lem

Current-measuring transducers handle up to 200 A

May 8, 2019 By Aimee Kalnoskas Leave a Comment

LZSR transducers

LEM announces the LZSR family of transducers, a new range that can be mounted on printed circuit boards (PCBs) for non-intrusive, isolated measurements of DC, AC and pulsed currents from 100A to 200A nominal. The family consists of three new models: LZSR 100-P, LZSR 150-P and LZSR 200-P. These new transducers are based on LEM’s latest […]

Filed Under: Power Components Tagged With: lem

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