S&C Instruction Sheet 716-502
23
(c) In the high-speed base, make sure:
• Each insulated operating rod is connected to the
interphase drive (see Figure 20)
• The interphase drive lever has been connected
to the operator uni-ball coupling (see Figure 21
on page 24)
• The adjustable locking rod attached to the inter-
phase drive lever has been removed (see Figures
19 on page 22 and Figure 21 on page 24)
(d) In the switch operator, make sure:
• Correct polarity has been observed on dc-control-
voltage models (See Figure 22 on page 24)
• The motor contactor and surge suppressor are
fully seated in their mounts (See Figure 23 on
page 25)
• Any optional “icebox” style relays (used for cata-
log number suffi x “-P,” “-T2” and “-U”) are fully
seated (See Figure 24 on page 25)
(e) Make sure all other pinned connections have been
made and all bolted connections have been securely
tightened.
STEP 21.
Replace the access cover on the side of each
transition box and securely tighten the associated
5/16
-18 × ¾-inch hex-head stainless-steel cap screws.
See Figure 11 on page 17.
STEP 22.
Replace the bottom plates to the underside of the
high-speed base and securely tighten the associated
½-13 × 1-
¼
-inch galvanized-steel cap screws, fl at
washers, and nuts. See Figure 6 on page 14.
For circuit-switchers rated 161kV and 230 kV:
Attach the six 13 × 3-
¼
-inch adjustment plates to
the underside of the high-speed base. These plates
are used to cover small gaps between the bottom
plates, the operator support tube mounting plate,
and the mounting pedestal.
Figure 20. Check that each insulated operating rod has been
connected to the interphase drive.
Insulated operating rod
Interphase drive
Installation
