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Severe injury as a result of pyrotechnic activation of the bypass
The bypass is equipped with pyrotechnic activation. Improper maintenance and repairs on the
bypass can result in severe physical injury.
● It is forbidden to carry out any maintenance or repair on the bypass.
●
● The bypass must not be dismantled.
See also
Bypass disposal (Page 122)
Required tools
● Standard set of tools with screwdrivers, screw wrenches, socket wrenches, etc.
● Torque wrenches from 1.5 Nm up to 100 Nm
● 600 mm extension for socket wrenches
Interconnecting the power cells
All power cells in the module have an identical design. A layout diagram showing how to
interconnect the double submodules is provided in the drive documentation.
All power cells have one equipment code. The installation location can be determined by the
equipment codes entered in the layout diagram.
Removing a power cell
1. Carefully ensure that no voltage can be connected to the power cell.
2. Remove the glass fiber-optic cable (A).
3. Disconnect the connections between the power cell and cell bus X4 (B).
4. Disconnect the connections between the power cell and capacitor bank X9 (C).
5. Disconnect the heat sink from the mounting points on the capacitor bank X4 (D).
6. Remove the power cell.
SINAMICS PERFECT HARMONY GH150 6SL3826
Operating Instructions 05/2020
CAUTION
A defective bypass must only be replaced by qualified, trained specialist personnel.
Maintenance
9.7 Repair
111
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