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A DVAC® 3 8 K V I N STA LL ATI ON , OPE R ATI ON A N D M A I NTE N A NCE M A N UA L
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Operation
Manual operation
The ADVAC® 38 kV circuit breaker can be operated
manually or electrically. The manual charging
handle is required for manual operation.
1. Inspect initial state of the breaker to determine
the operations available:
a. Close/open indicator
b. Closing spring charged/discharged indicator
2. Charge breaker using up and down motions.
a. Closing spring completely charged. Charge
handle has free movement. Closing spring
charged/discharged indicator changes to
“charged.”
b. Breaker is ready to perform close-open
(CO) operation.
3. Manually close breaker via close push button.
a. Breaker closes. Close/open indicator changes
to “closed.”
b. Closing spring charged/discharged indicator
changes to “discharged.”
c. Breaker ready to perform open (O) operation.
(If O-C-O is desired, see step 7.)
4. Manually close breaker via open push button.
a. Breaker opens. Close/open indicator changes
to “open.”
b. Closing spring charged/discharged indicator
changes to “discharged.”
c. No additional operations are available. Return
to step 3 if additional operation is desired.
5. If an open-close-open (O-C-O) operation is
desired:
a. Recharge the breaker after step 3 (steps 2, 3).
b. Breaker is now ready to perform O-C-O (steps
6, 5, 6). Closing spring charged/discharged
indicator will remain “charged” after the initial
open.
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Operations table
Charging spring indicator
Mechanism
Operations available
Proceed to step
Discharged
Open
None
2
Discharged
Closed
Open
4
Charged
Open
Close-open
3
Charged
Closed
Open-close-open
5