The 9231/25/1-PD is a 25 kV coupling capacitor with an integrated high voltage filter and low voltage termination to connect to an external measuring impedance in a compact design for partial discharge measurements. It is optimized for measuring partial discharges together with the PD detector DDX 9160 or DDX 9161, optimally using the built-in measuring impedance option. An incorporated half-T filter on the high voltage electrode attenuates the interferences coming from the power supply and increases the sensitivity of the PD measuring circuit. The filter is protected from over-voltage by a mechanical spark gap.
Datasheet:
9230/25/1-PD Features
All in one solution including the coupling capacitor, HV filter, and low voltage termination to connect to a measuring impedance
Rated for 25 kV test voltage
Rated coupling capacitance of 1.1 nF
PD free (< 1 pC)
Built-in over-voltage protection
Small dimensions and lightweight
Portable and perfect solution for on-site measurements of rotating machines (together with MIDAS 2881 / 2881G and DDX 9160)