Eaton COOPER POWER SERIES - Perform the Switchgear Apparatus Functional Test

4
Replacement of Cover Gasket for Padmount Switchgear Side-Hinge-2 Models
FIELD SERVICE INSTRUCTIONS MN285009EN April 2019
1.4 Pull the pressure-relief valve to relieve pressure
(Figure 17).
Record whether pressure was present or not.
Figure 17.
1.5 Verify that the Gasket Replacement Kit contains the
correct gaskets:
1.5.1 Remove the flat gaskets from the Gasket
Replacement Kit.
1.5.2 Before removing the cover, pre-position the
gaskets on the cover. Verify that the gaskets
are the correct length and that all gasket holes
align with the cover bolts.
If the gasket length, hole spacing, or
number of holes does not match the cover,
STOP. Do not proceed any further with the
repair. Consult factory service.
1.5.3 Assemble the four gaskets at the puzzle
dove-tail corner joints (Figure 18) to ensure the
correct positioning of gaskets.
ote:N At the bolt holes, notice that the larger
portion of the rubber is towards the
interior of the tank.
Figure 18. Dove-tail joint
2. Perform the Switchgear Apparatus
Functional Test
ote:N Consult factory service if the apparatus does
not perform as expected during the functional
test.
2.1 Prepare the switchgear apparatus for the test:

For units without an optional motor operator:
Follow the procedure in step 2.1.1.

For units with an optional motor operator:
Follow the procedure in step 2.1.2.
2.1.1 For units without an optional motor
operator:
Manually open and close each single or three-
phase handle for all Source and Tap Ways.
Leave each handle in the Closed position.
2.1.2 For units with an optional motor operator:
a. Electrically operate the handle to the
Open position (Figure 19 - pre 2018 units;
Figure 20 - 2018 & later units).
b. Remove the drive pin connecting the
motor operator to the handle drive lever
assembly (Figure 21 & Figure 22); then
allow the motor operator to drop away
from the handle (Figure 23).
c. Manually close, open, and then close each
single or three-phase handle for all Source
and Tap Ways.
Leave each handle in the Closed position.
Figure 19. Handle at Open position (pre 2018 units)