Capacitive Voltage Indicator Capacitive Voltage Indicator Voltage indicating Unit used for 3.3 kV to 36 kV Coupling capacitor from 15 pF to 150 pF Capacitive Voltage indicator Using an electrode to complete the circuit and create capacitive coupling, capacitive voltage indicators sense the voltage with the air or any dielectric material acting as the insulation as in the simple capacitors. Technical Datasheet