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With closely picked cables:
- use selecting coil AS2/30
In case of interference frequencies at 2kHz:
- use selecting coil AS10/30.
For cable selection of live cables:
- feed in audio-frequency signal via separating filter or clip-on device AZ10
- use selecting coil AS10/30.
7.6 Determination of joints (Twist method)
Also for this application the search coil SP 30 is used. A signal of a frequency generator is
sent to the cable. Therefore joints can be determined with the SP 30. The field strength is
amplified by sleeves and branches enabling a accurate pin-pointing of their location.
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