ABB VersaRupter Installation, Operation And Maintanance Manual - Warning
VersaRupter MV Indoor Switch | Installation and Operation Manual
6
Installation and Mounting
Inspect the VersaRupter for any obvious problems prior to
installation. Check that the surfaces of the main station-
ary contact are covered with contact grease. Recom-
mended grease is ISOFLEX TOPAS NCA 52.
Test operations
The switch can be operated several times with a remova-
ble handle once secured to a flat surface. Switches with a
K-mechanism will open when the shaft is rotated clock-
wise and will close when rotated counter-clockwise (as
seen from the mechanism side of the switch). The K-
mechanism in the closed position appears like the one in
figure 1. Figure 2 shows the K-mechanism in the open
position. Note the position of the cam in the center of
the mechanism.
The drawbars are disconnected from the VersaRupter
when shipped with an A-mechanism. After removing from
the shipping container, gently pull the main contacts fully
open by hand. Connect the drawbars onto the shaft of
the eccentric bolt. Install the provided washer and cir-
clip to secure the drawbar to the eccentric bolt. The
proper contact penetration was set at the factory before
removing the draw bars from the shaft.
To operate the switch with an A-mechanism, the shaft
must be turned clockwise to first charge the opening
spring. A charged A-mechanism can be identified by the
opening spring assembly rotated and locked into position
towards the rear of the mechanism as seen in figure 3.
Compare this to the initial state in figure 4. Turning the
shaft counter-clockwise will close the switch and a small
clockwise rotation will open the switch.
The VersaRupter switch blades move rapidly with great force. Always stay
clear of these moving parts to avoid serious bodily injury.
The A-mechanism is a stored energy device that can release its energy with
great force and speed after a very small rotation of the shaft.
WARNING
Figure 1
Figure 2
Figure 3
Figure 4