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The geared motor,
if any, immediately starts the automatic spring reloading operation. 25). 27
Model 2234 Apparatus Scale
L 2778
Doc-No' 1SDH000460R0002
Page No.2 Circuit-breaker closing and opening procedures
The operation the circuit-breaker can either manual electrical.
The geared motor automatically reloads the springs after each closing
operation until the yellow indicator appears (6, Fig. When the power
is cut off during loading, the geared motor stops and automatically
starts reloading the springs again when the power returns.
a) anual 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) lectrical 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.
17/158
. The special indicator
(3) changes indicate "I" signal that the circuit-breaker has closed. When there shunt opening release, the operation can also carried
out remotely means the special control circuit. Opening having taken place signaled the letter "O" appearing the indicator (3). is, any
case, always possible complete the reloading operation manually.
Fig. 26
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1 1
- J
d) pening the circuit-breaker
For manual opening the circuit-breaker, press pushbutton "O" (1). When there shunt closing release, the operation can carried out remotely means the special control circuit. For manual closing, press the pushbutton (5) marked with the letter
"I".
c) losing the circuit-breaker
The operation can only carried out with the closing springs fully loaded. Even with the closing springs unloaded, the operating mechanism retains enough energy for the opening operation.
Fig. Furthermore, the indicator the state the springs (6) goes the WHITE
position.7
