Rockwell-automation 1500 Isolation Switch Handle Interlock Mechanism E Manual de usuario descargar pdf (Pagina 3)

Bulletin 1500/1900 Isolation Switch Handle – Interlock Mechanism Replacement 3

1500-IN052C-EN-P – January 2007

Grounding Bar

Isolation Switch Blades

must fully engage Grounding

Pins of Grounding Bar.

(Verify for each phase)

Isolation Switch Shutters

must be closed.

(Verify for each phase)

Figure 2 – Inspecting Isolation Switch in Open Position

6) Check the line and load sides of the contactor with a hot stick or appropriate voltage

measuring device for the system voltage, to verify that they are voltage free (see

Figure 3).

a) Check for line-side voltage at the top vacuum bottle terminals.

b) Check for load-side voltage at the bottom vacuum bottle terminals.

Check line-side power here

Check load-side power here

Figure 3 – Contactor Voltage Checkpoints

7) Use the Door Interlock Circumvention procedure described in Appendix A to move

the isolation switch handle to the ON position

8) Check the isolation switch blades with a hot stick or appropriate voltage measuring

device for the system voltage, to verify that they are voltage free (see Figure 4).

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Rockwell-automation 1500 Isolation Switch Handle Interlock Mechanism E Manual de usuario Pagina 3