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 […]

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 […]

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 […]