36
PowerVac
®
5kV Vertical Lift
Chapter 11. Mechanical Adjustments
Figure 31. Contact Gap measurement, wipe indicator check and wipe measurement
Figure 30. Contact Gap Adjustment—Opening Buffer
1. Buffer Arm
2. Buffer
3. Shims
4. Buffer Stem
5. Bolts
11-3 Contact Gap Adjustment
The gap adjustment refers to the separation, or
gap, between the primary contacts within the
vacuum interrupter. Before attempting to mea-
sure or set the gap adjustment, verify that the
wipe settings are within acceptable limits. Any
change of the wipe settings will affect the gap
settings.
1.
With the breaker in the open position and
the closing spring discharged, the buffer
arm should be stopped against the buffer.
Pressing the stem into the buffer.
2.
To verify contact gap dimensions, reference
Figure 31.
