AE- 1 5 0 s y s t e m – U s e r M a n u a l
11
avoid using the AE-150-SYNC and connect the AE-150 Phase In connector to a
synchronized low voltage signal (ex: coupler output). See technical
specifications for more details.
PD channel
In order to localize partial discharge, an electric type sensor must be connected
to the AE-150 PD channel. Three sensors are available:
HFCT clamp
Partial discharge activity, from inside the transformer tank, will flow to ground
through the transformer’s groundings. The AE-150 will sense these electrical
signals using the HFCT clamp. The RF-023 filter is used to reduce ambient
electrical noise.
Connect the RF-023 filter to the AE-150 PD connector. Connect the HFCT
clamp (20mm and 60mm opening models are available) to the RF-023
filter using the provided BNC to BNC coaxial cable. Install the HFCT clamp
around a transformer ground cable. Refer to next figure (HFCT-60mm
model shown).
HFCT clamp ferrites must have a quality contact on both sides of the clamp.
Make sure contacts are free of dust, debris, grease or any other contaminant.
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