14
│ 3 Energizing a pipeline
PP
Fig. 10: Energizing with earthing spike
1 Electrical connection to the pipeline to be located
2 Generator
3 Earthing spike
1.
Make sure that the generator is switched off.
2. Connect the cable set to the generator.
3.
Insert the earthing spike firmly into the ground.
4. Attach a clamp to the earthing spike.
5. Attach the second clamp of the cable set to the exposed part
of the pipeline to be energized.
6. Switch on the generator.
7. Select the frequency.
8. Adjust the signal strength.
9. Choose between continuous signal or pulsed signal.
The pipeline is energized with the selected settings.
Ending direct energizing
1.
Switch off the generator.
2. Disconnect the cable set from the generator.
3. Disconnect the clamps from the pipeline and from the earth-
ing spike.
3.6
Energizing a pipeline indirectly
If no direct connection to a pipeline is possible, the generator
can be used to indirectly energize a pipeline without a cable con-
nection. For optimum indirect energizing, the generator must be
positioned as accurately as possible lengthways over the pipe-
line (fig. 7).
