S&C ELECTRIC COMPANY
716-600
INSTRUCTION SHEET
Page 10 of 24
February 11, 2002
S&C Series 2000 Circuit-Switchers
Interrupter Replacement
Outdoor Transmission (69 kV through 230 kV)
INTERRUPTER REPLACEMENT ON MODELS 2020, 2025, AND 2030 — Continued
Step 11
For interrupters with the remote gas-density monitor
option, see “Installing the Transmitter” on page 18.
Attach the replacement interrupter to the insulating
support column as follows. See Figure 8.
(a) Thoroughly wire-brush the top of the transition box
and the mating surface on the interrupter, and immedi-
ately apply a liberal coating of Penetrox
®
A (available
from Burndy Corporation) or other suitable aluminum
connector compound to the brushed surfaces.
(b)
Make certain that the positioning mark on the
bottom of the interrupter is aligned with the posi-
tioning mark on the top of the transition box.
Then
carefully lower the interrupter on top of the transition
box. Note that one of the
¹⁄₂
—13 stainless-steel studs
on the interrupter is longer than the other three, to aid
in assembly.
(c) Reattach a
¹⁄₂
-inch Belleville washer and a
¹⁄₂
—13
stainless-steel hex nut, as retained from Step 6, to
each of the four studs. Tighten each nut securely.
(d)
For Circuit-Switchers rated 69 kV through 138
kV:
Insert the connecting pin retained from Step 10(c)
into the coupling and operating rod link. See Figure 5
(top).
It will be necessary to loosen the
⁵⁄₁₆
—18
2
¹⁄₄
hex-head stainless-steel screw indicated in Figure 5
(top) and withdraw it approximately
¹⁄₈
inch, so that
the connecting pin can be inserted. Do not remove
the screw at this time.
Now insert the pin retaining
clip retained from Step 10(c) as indicated in Figure 5
(top).
Make sure that the clip is positioned as shown.
For Circuit-Switchers rated 161 kV and 230 kV:
Insert the connecting pin retained from Step 10(c) into
the coupling and operating rod link. See Figure 5 (bot-
tom).
It will be necessary to loosen the
⁵⁄₁₆
—18
2
¹⁄₄
hex-head stainless-steel screw indicated in Figure 5
(bottom) and withdraw it approximately
¹⁄₈
inch, so
that the connecting pin can be inserted. Do not
remove the screw at this time
. Use a screwdriver
blade in the slot at the end of the connecting pin to
align the cross-hole in the connecting pin with the
cross-hole in the operating rod link. Now insert the pin
retaining clip retained from Step 10(c) as indicated in
Figure 5 (bottom).
Make sure that the clip is posi-
tioned as shown.
Interrupter lifting
bracket
¹⁄₂
—13
stainless-steel
studs, Belleville
washers, and stainless-
steel hex nuts
Positioning mark
Transition box
Access cover
(removed)
Figure 8. Attaching replacement interrupter to insulating support column. Model 2030 illustrated; Models 2020 and 2025 are
similar.
