S&C 2000 Series Installation & Operation Manual page 13

Unbolt the high-speed base from the
shipping skids and lift the high-speed base,
with interrupters attached, atop the support
arm gussets, as shown on the catalog drawing.
Avoid sudden starts and stops. Verify the
SWITCH POSITION indicator on the base is
visible on the desired side (this is also the side
on which the operator door will open.)
On the 69-kV circuit-switchers with
48-inch (122-cm) phase spacing: Support
arm gussets are not used; the high-speed base
is attached atop the mounting pedestal using
⅝–11×2¼-inch hex-head galvanized steel cap
screws, flat washers, and self-locking nuts.
The operator directly drives the
interrupters open and closed through a
simple high-speed power train leading
from the top of the operator, through a
horizontal interphase linkage enclosed in
a steel-sheathed high-speed base and to
reciprocating-action insulated operating
rods passing through the center of the
insulating support columns . Permanently
lubricated bearings are used throughout
the power train . The high-speed base has
been fully pre-assembled and adjusted at
the factory . Do not disassemble the high-
speed base or high-speed power train .
Damage to the high-speed base and
personal injury may result .
Loosely bolt the high-speed base to the support
STEP 9 .
arms using the ½–12×2-inch hex-head galva-
nized steel cap screws, flat washers, and
self-locking hex nuts furnished.
Lubricate the bolts to facilitate tightening.
Use a level to verify the high-speed base is hori-
zontal, both lengthwise and sideways. Adjust
the lower set of anchor-bolt nuts at the pedes-
tals to achieve level. See Figure 3 on page 12.
If necessary, loosen the ⅝–11×1¼-inch
hex head galvanized steel cap screws attaching
the support arms to the mounting pedestals,
reposition the support arms, and retighten the
cap screws.
CAUTION
. S&C Instruction Sheet 716-504
Installation
13