The PQ-Sensor is a uniqe device for upgrading CVT's for harmonic and Power Quality measurements.
Capacitive Voltage Transformers have a very limitted frequency range. The internal LC-circuit is tuned for grid frequency.
A CVT equipped with a PQ-sensor is able to transmit frequencies from 10 to 5000 Hz.
Note: For transmitting of transient signals an RC-Divider ROF is required!