ABB UniGear 500R - Page 53

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7.3.1. Three-position disconnector operation from
OFF to ON position
1. Ensure that the circuit-breaker is open (Figure 94)
- A).
2. Remove the padlock (if fitted) from selector of the
threeposition disconnector(Figure 90).
3. Shift the selector to the left, hold and insert the
threeposition disconnector handle in the open (left)
socket(Figure 94) - B). The operating lever must
by fully inserted in the operating slot to the end
otherwise the interlocking mechanism can be
damaged.
4. Lift the handle fully up to the end of its movement
(“I” position) (Figure 94) - C).
5. Remove the handle and release the selector which
will return to the central position (Figure 94) - D).
Now it is possible to close the circuit-breaker.
6. The indicator of the three-position disconnector
position will indicate the ON position (Figure 94) -
E).
7. Lock the selector of three-position disconnector
with the padlock, if fitted (Figure 90).
WARNING
Remove always operating handle after reaching
end positions (EARTH, ON, OFF) of three-position
disconnector.
Figure 94: Three-position disconnector operation from OFF to ON position.