Closed-loop Hall Effect voltage sensors for DC, AC, and pulsed voltage measurement with galvanic isolation. The primary resistor is incorporated within the housing; the closed-loop current output provides high noise immunity over long cable runs between the measurement point and the control system. LV 25 series are PCB-mount, covering 10V to 1500V nominal on a ±15V supply. LV 100 series are panel-mount, extending to 5000V nominal on a ±15 ~ ±24V supply, suited to both industrial and traction-grade installations.

Applied in AC and DC variable speed drives, servo drives, UPS, welding power supplies, battery-supplied applications, and railway traction systems including propulsion converters, braking choppers, auxiliary converters, and battery chargers.