S&C 2000 series, Инструкция по эксплуатации

Страница: 7 / 24

INSTRUCTION SHEET
716-600
Page 7 of 24
February 11, 2002
S&C ELECTRIC COMPANY
Interrupter
lifting bracket
¹⁄₂
—13 1
¹⁄₄
hex-head
stainless-steel
cap screws and
Belleville
washers
Four
¹⁄₂
—13
stainless-steel
hex nuts and
Belleville
washers
Four
⁵⁄₁₆
—18
³⁄₄
hex-head
stainless-steel
cap screws
Access cover
Transition box
Insulating support
column
INTERRUPTER REPLACEMENT ON MODELS 2020, 2025, AND 2030 — Continued
Step 4
Remove the four
⁵⁄₁₆
—18
³⁄₄
hex-head stainless-steel
cap screws used to attach the access cover to the side of
the transition box on the insulating support column. See
Figure 4. Remove the cover and place it and the hardware
on a clean surface. They will be re-used in Step 11(f).
Step 5
Prepare the interrupter for removal from the insulating
support column as follows. For Circuit-Switchers rated 69
kV through 138 kV, refer to Figure 5 (top); for Circuit-
Switchers rated 161 kV and 230 kV, refer to Figure 5
(bottom).
(a) Attach the spare stop bracket (marked with a
black/yellow striped label) and spacer (marked with a
black/yellow striped label) to the interrupter using the
⁵⁄₁₆
—18 2
¹⁄₄
hex-head stainless-steel screw fur-
nished. (These items are included with the replace-
ment interrupter, in a separate box.) Hand-tighten the
screw.
(b) Remove the pin retaining clip and connecting pin
which attach the coupling to the operating rod link.
Discard the connecting pin and pin retaining clip.
(c) Now securely tighten the
⁵⁄₁₆
—18 2
¹⁄₄
hex-head
stainless-steel screw.
Step 6
Attach a suitable lifting sling to the interrupter lifting
bracket. Then remove the four
¹⁄₂
—13 stainless-steel hex
nuts and Belleville washers which attach the interrupter
to the transition box on the insulating support column.
See Figure 4. Retain this hardware for re-use in
Step 11(c).
Step 7
Carefully lift the interrupter from atop the transition box
of its associated insulating support column and lower it
to the ground. Place the interrupter on the ground
horizontally.
Use care to avoid damaging the exposed
coupling.
Ç
CAUTION
Do not lift interrupter vertically by the lifting rings on
the container.
Figure 4. Removing access cover from transition box.