PQ Sensor

Techimp PQ are quadrupole devices designed for partial discharge detection for both site and factory. They provide both voltage reference synchronization signal (SYNC) and partial discharge signals (PD OUTPUT). The device in its standard configuration it is connected to a coupling capacitor (Cc).

PD signal is filtered through a High Pass Filter while the synchronization signal is filtered through a Low Pass Filter, which allows test voltage rejection. PQ can be applied for on/off line PD test.

Three standard PQ are available: PQ0, PQ1 and PQ2, they differ one from another for the value of the coupling capacitor they can be connected to; this is done in order to obtain the needed ratio between the input voltage at the coupling capacitor (Vin) and the SYNC voltage (Vout synchro).