ABB VersaRupter Installation, Operation And Maintanance Manual - page 27
VersaRupter MV Indoor Switch | Installation and Operation Manual
27
Installing the Type E Ground Switch on VersaRupter
The grounding switch allows the lower terminals of the
VersaRupter (or fuse base) to be grounded. The grounding
switch must be mechanically interlocked with the Ver-
saRupter so that it cannot be closed the same time the
VersaRupter is closed. Separate operating handles must be
provided for the VersaRupter 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 lower
contacts of the VersaRupter which are supplied with
the ground switch. Each of these pieces has a clear-
ance hole for the Allen head screw and a bolt hole
that aligns with the bolt hole of the lower terminal.
The 1200 A switches have a clearance hole and two
bolt holes. Do not fully tighten the nuts and bolts.
See figure 55.
2. Visually align the contacts as in figure 56 and lubricate
the stationary contacts with the provided lubricant in
the kit.
3. Secure the Type E grounding switch to the lower por-
tion of the VersaRupter frame using a 13 mm socket as
shown in figure 57.
4. Close the grounding switch, figure 58, with a remova-
ble handle to align the stationary contacts and tighten
the bolts using a 19 mm socket securing the stationary
contacts.
5. Open the ground switch to prepare for mechanical
interlock installation.
Figure 55
Figure 56
Figure 57
Figure 58