PD filtering can be applied in areas of high electrical noise in which noise suppression is required to reduce the external interferences in PD measuring circuits. Two different models of filters can be offered: band-pass filter (HTF-1) or band-stop and sheath current filter (HTF-2).
Datasheet:
HTF-1 / HTF-2 Features
Reduces external interferences (noise) in PD measuring circuits
HTF-1 is a band-pass filter with high passes at approx. 40, 80 and 120 kHz and low passes at approx. 270, 370, 470 and 570 kHz
HTF-2 is a band-stop and sheath current filter with adjustable center frequency of the stop-band at 500 – 1800 kHz
Handheld, battery operated units in robust metal housing
Analog frequency filtering
Switchable pre-amplifiers to optimize the signal-to-noise ratio
Filter frequencies adjustable with rotary switch