Replacing a defective Q1 disconnector

Part number

Designation

M8 tightening torque

29721008

Disconnector OTDC200U11

14 Nm

If disconnector Q1 is defective, additionally check the following components for correct function:

  • Auxiliary contacts Q1.1/Q1.2
  • Fuse F1
  • Fuse F2
  • Fuse F3
  • Contactors K1, K2, K3
  • Storage bundle (Are there any defective modules in the storage bundle?)

 

Required tools:

  • Hexagon socket: Set
  • Wrench: Set
  • Torque wrench 0 Nm – 20 Nm

 

Procedure:

  1. To ensure the correct installation depth of the linkage during reinstallation, mark the linkage.
  2. Remove the linkage by loosening the set screws.
  3. Loosen the M8 screws.
  4. Remove the auxiliary contacts.
  5. Remove all electrical connections.
  6. Remove the disconnector from the mounting plate.
  7. Mount the new disconnector on the mounting plate.
  8. Mount the auxiliary contacts.
  9. Restore all electrical connections.
  10. Tighten the M8 screws to the specified torque.
  11. Install the linkage.