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d) Opening the circuit-breaker
For manual opening the circuit-breaker, press pushbutton (1). The special indicator
(3) changes indicate "I" signal that the circuit-breaker has closed. Even with the closing springs unloaded, the operating mechanism retains enough energy for the opening operation.
16/1 08
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Model L3447
A pparatus Emax DC
S cale
D oc-N 1SDH000635R0002
Page No. Opening having taken place signaled the letter “O” appearing the indicator (3). is, any
case, always possible complete the reloading operation manually.
Fig. The geared motor,
if any, immediately starts the automatic spring reloading operation.
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.
Fig.7.
The geared motor automatically reloads the springs after each closing
operation until the yellow indicator appears Fig. When the power
is cut off during loading, the geared motor stops and automatically
starts reloading the springs again when the power returns. When there shunt opening release, the operation can also carried
out remotely means the special control circuit.
Fig. 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.2 ircu it-b clo sin and res
The operation the circuit-breaker can either manual electrical. 25). _______________________________________________________
c) Closing the circuit-breaker
The operation can only carried out with the closing springs fully loaded. Furthermore, the indicator the state the springs (6) goes the WHITE
position
