ABB VersaRupter Installation, Operation And Maintanance Manual - page 28
VersaRupter MV Indoor Switch | Installation and Operation Manual
28
Installing the Type E Ground Switch on VersaRupter Fuse Base
The grounding switch allows the lower terminals of the
fuse base to be grounded. The grounding switch must be
mechanically interlocked with the VersaRupter so that it
cannot be closed the same time the VersaRupter is closed.
Separate operating handles must be provided for the Ver-
saRupter and grounding switch.
Grounding switches are specified in accordance with the
pole spacing of the VersaRupter to which they are at-
tached. Left and right hand splined shafts are provided
with the ground switch. The VersaRupter must have a left
hand shaft extension installed for either the mechanical
interlock or operating handle.
1. The three bus pieces must be installed on the contacts
of the fuse base which are supplied with the ground
switch. Do not fully tighten the nuts and bolts. See
figure 59.
2. Visually align the contacts and lubricate the stationary
contacts with the provided lubricant in the kit.
3. Secure the Type E grounding switch to the fuse base
frame using a 13 mm socket as shown in figure 60.
4. Close the grounding switch, figure 61, with a remova-
ble handle to align the stationary contacts and tighten
the bolts using a 19 mm socket securing the stationary
contacts.
5. Install the tension bushings shown in figure 62.
6. Open the ground switch to prepare for mechanical
interlock installation.
Figure 59
Figure 60
Figure 61
Figure 62