S&C ELECTRIC COMPANY
s
716-501
INSTRUCTION SHEET
Page 22 of 26
August 12, 2002
S&C Series 2000 Circuit-Switchers Model 2010 — With Horizontal Interrupters and
Outdoor Transmission (69 kV through 230 kV) Vertical-Break Power-Operated Disconnect
INSTALLATION — Continued
Step 27
Step 28
Replace the access cover on the side of each transition
box and securely tighten the associated ⁵⁄₁₆—18³⁄₄ hex-
head stainless-steel cap screws.
Step 29
Replace the bottom plates to the underside of the cross
base and securely tighten the associated ¹⁄₂—131¹⁄₄ gal-
vanized steel cap screws, flat washers, and nuts. For Cir-
cuit-Switchers rated 161 kV and 230 kV: Attach the six
133¹⁄₄ adjustment plates to the underside of the cross
base. These plates are used to cover small gaps between
the bottom plates, the operator support tube mounting
plate, and the mounting pedestals.
Step 30
Insert the motor-and-closing circuit fuseholder. Then
close the control-source disconnect switch.
Step 31
Press the “CLOSE”n push button. The motor-driven cam
in the stored-energy mechanism will immediately start
retracting. Simultaneously, the take-off shaft at the rear of
the operator housing will turn to drive the interphase pipe
assembly, closing the disconnect. When the disconnect
has completely closed, the closing latch will release, dis-
charging the closing spring. This action closes the inter-
rupters. The switch-position indicator on the cross base
will move to the “CLOSED” position. Further, if the posi-
tion-indicating lamp option has been specified, the red
lamp will light.
Step 32
Verify, at the center pole-unit insulating support column,
that the rotating-spindle closed-stop bolt touches the
bumper. See Figure 12 (left). In the event that the closed-
stop bolt is not touching the bumper, loosen the locknuts
at the top and bottom of the vertical operating pipe and
turn the pipe counterclockwise (as viewed from the top)
to increase blade travel; then tighten the locknuts. Do not
adjust the closed-stop bolt.
Step 33
Verify, at each outboard pole-unit insulating support col-
umn, that the clearance between the rotating-spindle
closed-stop bolt and the bumper does not exceed ¹⁄₁₆ inch.
See Figure 12 (left). In the event that the clearance
between the closed-stop bolt and the bumper exceeds
¹⁄₁₆ inch at either outboard pole-unit insulating support
column, remove the pin at the appropriate insulating sup-
port column drive lever, loosen the appropriate locknut at
the adjustable coupling, and rotate the affected interphase
pipe section so that the aforementioned clearance is
obtained. Then replace the pin and tighten the locknut.
See Figure 11. Do not adjust the closed-stop bolts.
Step 34
When the Circuit-Switcher is ready to be placed in service,
the motor-and-closing circuit fuses can—at the user’s
option—be replaced with the slugs furnished. This prac-
tice is recommended for increased reliability because
low-voltage fuses can be damaged by the repeated inrush
current experienced during normal Circuit-Switcher
opening and closing operations and can thus sneak out,
leaving the Circuit-Switcher inoperable.
Before replacing these fuses with slugs, make certain
that the control-source battery is adequately protected to
prevent discharge, using fuses or circuit breakers
located at the battery bus.
Step 35
Please complete and mail the Circuit-Switcher registra-
tion card! The information requested on this card is vital
to ensure prompt notification in the event field modifica-
tions are needed.
n Trip and close push buttons are not included on operators specified
with Catalog Number Suffix “-J.” In such instances, momentarily jumper
terminals 1 and 3 to close the Circuit-Switcher.
Ç
CAUTION
Check the following . . . failure to do so can result in
damage to the Circuit-Switcher when operated!
(a) At each transition box:
• The interrupter stop bracket and spacer have
been removed (see Figure 8), and
• The transition lever has been connected to the
operating rod link (see Figure 8).
(b) In the cross base:
• Each insulated operating rod has been con-
nected to the interphase drive (see Figure 9),
• The interphase drive lever has been connected
to the operator uni-ball coupling (see Figure 10),
and
• The adjustable locking rod attached to the inter-
phase drive lever has been removed (see Figure
10).
(c) All other pinned connections have been made
and all bolted connections have been securely
tightened.
(d) At the operator:
• Blocking has been removed from the motor con-
tactors, and
• Correct polarity has been observed on dc-con-
trol-voltage models.
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