LEM Voltage Sensor Distributor | Isolated Voltage Transducers

BeiLuo supplies genuine LEM voltage transducers that measure DC, AC and pulsed voltage with galvanic isolation between the high-voltage primary circuit and the low-voltage secondary circuit. LEM offers two main families for voltage measurement. The LV closed-loop Hall transducers, such as the LV 25-P, convert a primary current that is set by an external resistor R1 into an isolated secondary current, so the user chooses the voltage range by selecting R1, and the device suits measurements from about 10 V up to several hundred volts on a PCB. The DVL and DVC ranges use LEM's insulation digital technology to measure small and medium voltages up to 1000 V and above with excellent overall accuracy, a compact and lightweight design and low power consumption, in panel-mount or PCB formats with a current or voltage output. Because voltage transducers isolate the measurement from the control electronics, they protect the controller from high common-mode voltages and improve safety in traction, industrial and renewable-energy equipment. Typical uses include DC-link monitoring in motor drives and inverters, grid voltage measurement in solar and storage converters, and battery and traction voltage sensing in electric vehicles. BeiLuo keeps fast-moving LEM voltage transducer models in regional stock, ships them with import declaration, certificate of origin and RoHS documents, and supports selection, primary-resistor sizing, isolation planning and layout with an in-house FAE team. Whether you need a low-voltage PCB module or a panel-mount 1000 V transducer, our engineers help you match nominal voltage, measuring range, output type and mounting to your measurement task without over-specifying the part.