S&C ELECTRIC COMPANY
716-600
INSTRUCTION SHEET
Page 12 of 24
February 11, 2002
S&C Series 2000 Circuit-Switchers
Interrupter Replacement
Outdoor Transmission (69 kV through 230 kV)
INTERRUPTER REPLACEMENT ON MODELS 2010, 2015, AND 2040
Step 17
After following the user’s standard procedures for
clearing and tagging equipment on which work is to be
performed, close the Circuit-Switcher by pressing the
“CLOSE” push button on the operator.
d
Then remove the
trip-circuit and control-circuit fuseholders or—on newer
operators—open the control-source disconnect switch
and remove the motor-and-closing circuit fuseholder
from the operator. Push the manual trip lever
counterclockwise to trip the interrupters. Do not replace
the fuseholder(s) until so directed.
Step 18
Install the spare interrupter container, furnished with the
replacement interrupter, around the interrupter to be
replaced, using the following procedure:
NOTICE
Do not open the disconnect on Model 2010 Circuit-
Switchers by means of the manual charging handle.
The Series 2000 Circuit-Switcher Operator must
remain discharged during the interrupter replace-
ment procedure.
(a) Remove the two container-halves from the shipping
crate. Note that one of the container-halves is fur-
nished with a loosely attached
³⁄₈
—16
2
carriage
bolt at each end. Position this container-half so that
the carriage-bolt threads protrude through the holes at
the ends of the other container-half as shown in
Figure 1.
(b) Thread a
³⁄₈
—16 zinc-plated serrated hex nut on each
of the two
³⁄₈
—16
2
carriage bolts. Tighten each hex
nut just a few turns. See Figure 1.
(c) Attach suitable lifting slings to the four lifting rings at
the ends of the container-half assembly. See Figure 9.
Do not
loop slings from one end of the container to the
other. Raise the container into position around the
interrupter.
(d) Using a screwdriver as necessary to spread the edges,
snap the two halves together as shown in Figure 3.
Place a
³⁄₈
—16 zinc-plated serrated hex nut on each of
the captive
³⁄₈
—16
³⁄₄
carriage bolts that run the
length of the container-halves.
Do not remove the lift-
ing slings until the interrupter has been removed
and lowered to the ground, as directed in Step 7.
(e) Attach the container-halves at the indicator end of the
interrupter using one of the cables furnished. See
Figure 3 (right). Thread the cable through adjacent
holes in the container-halves, as shown. Position the
cable around the indicator end casting, then thread
the cable through adjacent holes in the container-
halves, on the other side.
Do not attach clamps to the
cable at this time.
(f) Attach the container-halves at the coupling end of the
interrupter in a similar manner, using the other cable
furnished. See Figure 3 (left). Slide the container-
halves back or forth as necessary to allow the cable to
be threaded through the holes.
(g) Pull the cable taut at the indicator end of the inter-
rupter and attach two of the clamps furnished. See
Figure 3 (right). Securely tighten the clamp nuts.
(h) Pull the cable taut at the coupling end of the inter-
rupter and attach the other two clamps furnished. See
Figure 3 (left). Securely tighten the clamp nuts.
(i) Securely tighten the
³⁄₈
—16 zinc-plated serrated hex
nuts that run the length of the container-halves.
Step 19
Remove the high-voltage conductor from the interrupter-
end terminal pad and, on Model 2040 only, from the
transition-box-end terminal pad. Then attach one of the
d
Trip-close push buttons are not included on operators specified with
catalog number suffix “-J.” In such instances, momentarily jumper termi-
nals 1 and 3 to close the Circuit-Switcher.
Figure 9. Raising spare interrupter container into position
on interrupter being replaced. Model 2010 Circuit-Switcher
illustrated; Models 2015 and 2040 are similar.
