9.7.4 Replacing the current transformer
Removing the current transformer
To remove the current transformer, proceed as follows:
1. Remove the power cables which are screwed to the busbar.
2. Loosen the screw ③ at the busbar and remove the measuring resistor.
Ensure that the cable of the measuring resistor is not damaged.
Figure 9-5 Replacing the current transformer
3. Loosen and remove the screw ④ at the busbar.
4. Remove the connecting cable between the current transformer and the AVT combination
module. To do this, loosen the nuts on the side of the current transformer and remove the
cables ②.
5. Loosen the four screws ① that fix the current transformer to the busbar.
6. Loosen the screw ⑤ and the three screws ⑥ that connect the busbar to the fixing plate.
When doing so, keep a firm grip on the busbar to ensure it does not fall.
7. Pull the busbar out to the front.
When doing so, be aware of the cables connected to the second current transformer.
8. Remove the current transformer from the bottom.
Maintenance
9.7 Repair
SINAMICS PERFECT HARMONY GH150 6SL3825
106 Operating Instructions 05/2020
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