Description and operation
Operating d evice
L14--007EN/01
6/6
07--2003
E ALSTOM
Operating principle, continued
Reloading the closing
spring
When the motor (12) is supplied with current, it immediately starts to load
the closing spring (9) by means of the reducing gears (13) of the inertia
flywheel (8) and the chain (15).
At the full stroke, the gear (19) is at the no tooth sector of the inertia fly-
wheel (8) and the reducing gears (13) can stop without causing strain on
the closing latch (14).
NOTE
: During the loading of the closing spring, the supplying circuit
of the closing coil is cut to avoid an untimely closing operation.
8
13
9
15
14
12
19
8
Opening
D When the opening coil (27) is stimulated or the manual opening lever
(28) is operated, the opening latch (6) releases the lever (5).
D The main shaft (1) effects a 60° clockwise rotation -- generated by the
loaded opening spring (3) -- before reaching the circuit--breaker “OPEN”
position.
D A damper (4) dampens the excess energy to smoothly finish travel.
OPERATION AUTHORIZED ONLY IF THE OPERATING DEVICE IS CON-
NECTED TO THE CIRCUIT BREAKER.
THE CIRCUIT BREAKER MUST NOT BE OPERATED AT A SF
6
PRES-
SURE GAS LOWER THAN THE MINIMAL PRESSURE FOR THE INSULA-
TION p
me
.
6
5
4
3
60°
1
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