Inspection
Examine the shipment for external evidence of damage as
soon after receipt as possible, preferably before removal
from the carrier's conveyance. Check the bill of lading to
make sure all listed shipping skids, crates, cartons, and
containers are present.
If there is visible loss and/or damage:
1. Notify the delivering carrier immediately.
2. Ask for a carrier inspection.
3. Note condition of shipment on all copies of the delivery
receipt.
4. File a claim with the carrier.
If concealed damaged is discovered:
1. Notify the delivering carrier within 15 days of receipt of
shipment.
2. Ask for a carrier inspection.
3. File a claim with the carrier.
Also, notify S&C Electric Company in all instances of
loss or damage.
Packing
An S&C erection drawing will be found in a water- resistant
envelope attached to the interrupter container on one of
the three circuit-switcher pole-units. Study the erection
drawing carefully and check the bill of material to make
sure all parts are at hand.
The circuit-switcher shipment should include the follow-
ing items, as shown in Figure 1 on page 8:
1. Three pole-units, each mounted on a skid. For ratings
of 69 kV and above, the live parts, which are attached to
the insulator-mounting flanges, are factory-assembled
and adjusted and should NOT be interchanged during
their removal for installation of the insulators.
2. A crate which contains individually identified miscel-
laneous power-train components, interphase couplings,
mounting hardware, and a temporary adapter for hand
operation of the individual pole-units.
3. The vertical operating shaft, interphase shafts, and
connecting shaft, which are bundled and shipped
uncrated. These shafts are cut to length if specified.
Otherwise, the correct number of shaft sections are
shipped for field cutting in accordance with the dimen-
sions specified on the erection drawing.
Shipping and Handling
(a) Interphase shafts and connecting shafts of 21/2-
inch IPS pipe are furnished if the distance from the
gearbox to the farthest pole-unit is 25 feet (7.62 m)
or less. If this distance exceeds 25 feet, interphase
shafts and connecting shafts of 3-inch IPS pipe are
supplied.
(b) Vertical shafts of 21/2-inch IPS pipe are furnished if
the gearbox mounting height is over 25 feet or less. If
the gearbox mounting height is over 25 feet, vertical
shafts of 3-inch IPS pipe are furnished.
4. Insulators, which are shipped in separate crates for
switches rated 69 kV and higher.
5. Mounting pedestals (if specified) consisting of a set of
two, of square steel tube construction, complete with
a circuit-switcher support frame.
6. An S&C CS-1A Switch Operator (if specified)
7. Any accessories specified, such as shunt-trip device,
grounding switch, pre-insertion inductors, bypass acces-
sory, or manual operating handle.
Note: Interrupter Target. Circuit-Switchers are usually
shipped with the interrupters in the open position. Therefore,
if the interrupter target, located on the side of each brain
housing will appear yellow. See Figure 2 on page 8. During
the step-by-step instructions in this instruction sheet, the
disconnect blades will be moved to the fully open position.
This will close the interrupter and charge and latch the
stored-energy source within the brain, and the target will
appear gray (normal).
Note: Gas-Pressure. Circuit-Switchers have sealed inter-
rupters containing gas under pressure. Loss of gas pressure
from damage during shipping or handling may result in
improper interrupting action. Low gas pressure is signaled
by a red target in the gas-pressure indicator at the terminal
end of each interrupter. A gray target indicates normal
pressure. See Figure 3 on page 8.
S&C Instruction Sheet 711-510
7
Need help?
Do you have a question about the Mark V Circuit-Switchers and is the answer not in the manual?