Operating Instructions
17
Manually Charging the Stored Energy Mecha-
nism
The stored energy mechanism may be charged with the SB
breaker open or closed . If the stored energy mechanism is
charged with the breaker open, sufficient energy is stored to
close and then open the breaker without recharging. If the
stored energy mechanism is charged with the breaker closed.
the operating sequence of open-close-open may be ex-
ecuted without recharging.
Part One - Operating the SB Encased Systems Breaker
To manually charge the stored energy mechanism, pull the
charging handle. Four or five full strokes, or several partial
strokes are required to fully charge the stored energy mecha-
nism. When the stored energy mechanism is fully charged,
the charging handle will be restrained by an internal stop, and
the “Spring Charged”/ “Spring Discharged” indicator will
point to “Spring Charged.” The charging handle will return to
the stowed position when released .
If an optional electric motor operator is employed the electric
operator will automatically recharge the stored energy mecha-
nism when the breaker is closed. If the electric operator is
disabled, the stored energy mechanism may be charged
manually.
CAUTION: When handle is against bottom stop as
illustrated, do not exert further downward pressure -
potential damage to housing or handle may occur.
To manually charge the stored energy mechanism, pull the charging handle downward four or five strokes.
Courtesy of NationalSwitchgear.com
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