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Fig. _______________________________________________________
c) Closing the circuit-breaker
The operation can only carried out with the closing springs fully loaded.
Fig. 25).
Fig.7. When there shunt opening release, the operation can also carried
out remotely means the special control circuit. The special indicator
(3) changes indicate "I" signal that the circuit-breaker has closed. 27
Model L3447
A pparatus Emax DC
S cale
D oc-N 1SDH000635R0002
Page No. 26
d) Opening the circuit-breaker
For manual opening the circuit-breaker, press pushbutton (1). Furthermore, the indicator the state the springs (6) goes the WHITE
position. The geared motor,
if any, immediately starts the automatic spring reloading operation. Opening having taken place signaled the letter “O” appearing the indicator (3).
a) Manual loading the closing springs
- Make sure that the indicator (3) shows "O" (circuit-breaker open)
- Make sure that the indicator (6) WHITE (springs unloaded)
- Repeatedly activate the lever (2) until the indicator (6) changes its
color YELLOW
b) Electrical loading the closing springs
The electrical loading the circuit-breaker possible when the
following accessories (supplied request) are present:
- geared motor for automatic loading the closing springs
- shunt closing release
- shunt opening release. For manual closing, press the pushbutton (5) marked with the letter
“I” When there shunt closing release, the operation can carried out remotely means the special control circuit.
The geared motor automatically reloads the springs after each closing
operation until the yellow indicator appears Fig.2 ircu it-b clo sin and res
The operation the circuit-breaker can either manual electrical. Even with the closing springs unloaded, the operating mechanism retains enough energy for the opening operation. When the power
is cut off during loading, the geared motor stops and automatically
starts reloading the springs again when the power returns. is, any
case, always possible complete the reloading operation manually.
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