INSTRUCTION SHEET
716-600
Page 15 of 24
February 11, 2002
S&C ELECTRIC COMPANY
INTERRUPTER REPLACEMENT ON MODELS 2010, 2015, AND 2040 — Continued
Step 27
Thoroughly wire-brush the indicator end casting of the
replacement interrupter where the terminal pad is to be
attached, as well as the mating surface on the terminal
pad, and immediately apply a liberal coating of Penetrox
A or other suitable aluminum connector compound to the
brushed surfaces. Then loosely attach the terminal pad to
the replacement interrupter using the three
¹⁄₂
—13
1
¹⁄₄
hex-head stainless-steel cap screws and Belleville wash-
ers retained from Step 24.
Step 28
Remove and discard the two #10–32 screws which con-
nect the operating-rod holding bracket (marked with a
black/yellow striped label) for shipment. See Figure 12
(left).
Pull the holding bracket to move the operating rod to
its fully open position. See Figure 12 (right). Then remove
the connecting pin and pin retaining clip used to attach
the holding bracket to the coupling. Retain the connecting
pin and pin retaining clip for re-use in Step 30, but discard
the holding bracket.
Step 29
Attach two suitable lifting slings to the replacement inter-
rupter and carefully lift and slide the interrupter into posi-
tion.
Use care to avoid damaging the exposed operating
rod.
Thoroughly wire-brush the mating surfaces on the tran-
sition box and replacement interrupter, and immediately
apply a liberal coating of Penetrox A or other suitable alu-
minum connector compound to the brushed surfaces.
Now attach the replacement interrupter to the transition
box using the four
¹⁄₂
—13 stainless-steel hex nuts and
Belleville washers retained from Step 22. Then attach the
terminal pad to the support insulator using the four
¹⁄₂
—13
1
¹⁄₄
hex-head galvanized steel cap screws and
flat washers (for Circuit-Switchers rated 69 kV) or the
four
⁵⁄₈
—11
1
¹⁄₄
hex-head galvanized steel cap screws
and flat washers (for Circuit-Switchers rated 115 kV
through 230 kV) retained from Step 22. Securely tighten
all the hardware, including the cap screws used to attach
the terminal pad to the replacement interrupter.
NOTICE
The operating rod is under pressure; when the two
screws are removed, the holding bracket may move
about
¹⁄₂
inch.
Figure 12. Preparing replacement interrupter for attachment to transition box.
Operating rod in fully open position
Operating rod in shipping position
Connecting pin
Operating-rod holding
bracket
(marked with a
black/yellow striped label)
#10–32 screws
Coupling
