ABB VersaRupter Installation, Operation And Maintanance Manual - page 36
VersaRupter MV Indoor Switch | Installation and Operation Manual
36
Installing the Top Mounted Fuse Base with Fuse Tripping
Adjusting the fuse tripping:
Charge the A-mechanism as described below in “Fuse trip-
ping control”.
1. Adjust the release shaft to a position so that the dis-
tance from fuse trip flap to fuse is within the limits of
figure 90.
2. Secure the washer and bearing on the left side of the
release shaft as shown in figure 88.
3. Secure the end of the release rod (11) to the release
shaft (1) as shown in figure 89.
Notes:
1. Check distance between fuse trip flap and fuse to
match that of figure 90 once installation is complete.
Adjustments can be made at the release rod (11) and
lever (13) connection point.
Fuse tripping control:
1. Turn the operating shaft of the mechanism a maximum
of 60° clockwise and return the handle back to the
neutral position (opening spring housing must not be
latched).
2. Mount a new fuse-link, or test fuse in accordance with
DIN 43625, in one of the phases.
3. If the distance between the fuse clips is longer than
shown in figure 90, max e + 8 mm, the adjustment
must be made with the fuse link resting on the fuse
clips on the fuse base.
4. The distance between the striker pin and the fuse trip
flag (15) must be between 3-6 mm. The fuse link is
allowed to sag but the distance between the striker
pin and fuse trip flag must not exceed 12 mm.
5. If the VersaRupter does not open when adjusted as
mentioned above, the adjustment must be repeated.
Figure 88
Figure 89
Figure 90
max
+
These operations must be carried out by
specialists only! Improper installation may
result in serious injury or death.