The geared motor automatically recharges the
springs after each closing operation until the yellow
signalling device (7) appears.
If the power is cut off during charging, the geared
motor stops and automatically starts recharging the
springs again when the power returns.
In any case, it is always possible to complete the
recharging operation manually.
c) Circuit breaker closing
The operation can only be carried out with the
closing springs completely charged. For manual
closing, press the pushbutton (5). When there is a
shunt closing release, the operation can also be
carried out remotely by means of a special control
circuit. Closing having taken place is indicated by the
signalling device (6).
d) Circuit breaker opening
For manual opening, press the pushbutton (4).
When there is a shunt opening release, the operation
can also be carried out remotely by means of a
special control circuit. Opening having taken place is
indicated by the signalling device (6).
6.3. Circuit breaker closing and
opening operations
Circuit breaker operation can be either manual or
electrical (fig. 6 - fig. 7).
a) Manual spring charging operation
To manually charge the closing springs, it is
necessary to repeatedly activate the charging lever
(2) (maximum rotation angle of the lever: about 90°)
until the yellow signalling device (7) appears which
indicates completion of charging.
The maximum forces which can normally be applied
to the lever are < 150 N for the EL1 operating
mechanism, < 200 N for the EL2 operating
mechanism and < 250 N for the EL2S operating
mechanism. For the type of operating mechanism,
please refer to the rating plate in fig. 1.
b) Electrical spring charging operation
On request, the circuit breaker can be fitted with the
following accessories for electrical operation:
• geared motor for automatic closing spring charging
• shunt closing release
• shunt opening release.
—
6. Instructions for operating the circuit breaker
Fig. 7
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