IL 44-751-1
Instruction Leaflet
Page 8 November, 2001
unless the tap changer is fixed on a position. Positive mechanical stops are built into the tap
changing mechanism, which will prevent turning past the lowest and highest positions.
The external mechanism can be pad locked in any position (pad lock not supplied by ABB).
Figure 7 shows the location of the pad-lock.
All external parts are made of non-corrosive materials.
2
1
3
4
Worm Gear
Assembly
Ball End Fitting
Drive Shaft
Tap Changer Deck
Sliding Fit
Connection
Ball End
Fitting
Inter-Phase
Shaft
Mounting Boss (welded to tank)
External Operating Mechanism
Figure 6: Drive System (mounting boss not supplied by ABB Alamo)
Figure 7: Location of pad-lock on external mechanism. (Pad-lock not supplied by ABB Alamo)
