GE Intellix BMT 330 Installation Manual page 50

Bushing monitoring and partial discharge detection for transformers
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The grounding switches for the coaxial cables in the product cabinet are to
be set to 'not grounded' (operational position).
Disconnect ALL the coaxial cables as shown in Figure D-3.
Figure D-3: Disconnection of coaxial cables
Follow these steps to calibrate the AA-170.
Note:
The calibration considers the waveguide between the measuring circuit and the
load i.e. adaptor + cable + cable position.
Note:
It is important to keep the cable straight between the AA-170 and the Bushing
Adaptor during all the measurements.
1.
Create a new folder on the computer. Next create a subfolder for each Bushing
Adaptor using its corresponding serial number as the name.
Note:
2.
Connect the AA-170 to the PC via the USB cable.
3.
Power on the AA-170.
4.
Open the AntScope software.
MA-017 – BMT 330 Installation Manual – Rev 3.3
These folders are used to save the data measured by the AA-170.
4-Mar-22
Page 50 of 69

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