Author Archives | LEM

LEM - who has written 34 posts on PowerGuru - Power Electronics Information Portal.

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LEM completes its range of high performance, compact, medium and high voltage transducers for the traction market with the DVM series

Posted on 22 September 2019

  25% less bulky due to reduced power losses; Improved accuracy and temperature stability Fully-isolated nominal measurement of 600-4200V DC, AC or pulsed Compact, light and robust package Combines 12 kV insulation with unmatched immunity against electromagnetic disturbances Meets latest IRIS requirements for rail traction applications LEM introduces the DVM series for insulated nominal voltage [...]

LEM introduces its first surface mounted SO8 isolated current transducers with integrated current conductor

Posted on 03 August 2019

  LEM introduces the GHS series: miniature, integrated circuit transducers for AC and DC isolated current measurement up to 100 KHz. These new components offer full isolation despite their small size, integrating the primary conductor for nominal current measurements of 10A, 12A, 16A or 20A with a measurement span of 2.5 times the nominal current, [...]

LEM introduces open - loop Hall effect current transducers with digital outputs

Posted on 10 June 2019

  LEM announces digital output versions of HO and HLSR open-loop Hall effect current transducers with analog to digital (A/D) conversion performed by an on-board sigma-delta modulator, giving a 1-bit serial bitstream output. These new components for nominal current measurements of 10, 32, 50, 80, 100, 120, 150, 200, 250 ARMS in 3 different mechanical [...]

LEM meets the demand for accurate and easy-to-install smart current sensors to empower the Internet of Energy (Smart Cities)

Posted on 19 May 2019

  LEM introduces a new LEM City range of products for future Smart Cities offering innovative and high quality solutions for measuring electrical parameters in Smart Grids, Industry 4.0 and renewable energy market. LEM has developed the “ART” Rogowski current sensor to measure current of up to 10000A AC and beyond. The ART achieves IEC [...]

LEM LH current transducer range pushes Hall effect technology to new limits for small currents

Posted on 17 May 2019

  LEM announces the LH 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 25A to 100A nominal. The family consists of three new models: LH 25-NP, LH 50-P and LH 100-P. These new transducers are based on [...]

Maintaining Precision in Varying Temperatures

Posted on 02 June 2019

      High precision transducers are becoming more in demand in high-performance industrial applications, specifically for medical equipment such as scanners and MRI machines, precision motor controllers, metering, measurement accessories and test equipment. By Michel Ghilardi, R&D Programme Manager, LEM, and Horst Bezold, Signaltec Most of these applications are using high precision transducers but [...]

LEM new IT xx5 series provides exceptional accuracy over wide temperature range of -40°C to +85°C

Posted on 21 May 2019

  LEM extends its range of high-accuracy current transducers, announcing the new series of IT xx5 transducers for non-intrusive and isolated nominal measurements of DC, AC and pulsed currents from 60 A to 600 A. The range includes 4 new models: IT 65-S, IT 205-S, IT 405-S and IT 605-S. These new models offer an [...]

Pushing Hall Effect Technology to New Limits

Posted on 06 November 2019

      Transducers break new ground in accuracy over a wide temperature range Reducing energy consumption and improving efficiency are key targets for most power electronics applications, especially in motor control drives, in uninterruptible and switch-mode power supplies or for industrial uses such as welding. Outside the industrial sphere, the same goals can be [...]

LEM new LF xx10 current transducers range pushes Hall effect technology to new limits

Posted on 24 October 2019

  LEM announces the new range of LF xx10 transducers for non-intrusive and isolated nominal measurements of DC, AC and pulsed currents from 100 A to 2000 A with 4 new series: LF 210-S, LF 310-S, LF 510-S, LF 1010-S.  A fifth, the LF 2010-S will be available in February 2015. LEM has developed a [...]

LEM extends the measurement range up to 250A for HO series high performance current transducers

Posted on 24 June 2019

  Open-loop Hall-effect ASIC-based current transducers measure up to 25 0 A DC, AC or pulsed Over-current detection and fault reporting Wide operating temperature range from -40 to +105ºC PCB-mount & panel-mount options with aperture or integrated primary conductor   LEM announces the addition of three new HO series of high performance current transducers which [...]