Siemens 15-FSV-750 Installatie, bediening en onderhoud - Pagina 22
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Interrupter/Operator
Description
Insulated coupler
48
50 4 1
Limit switch
54
Trip Button
62 8
Trip Free Coupling Rod
Spnng Return Latch
62 8 1
62 8 2
Trip Free Coupling Link
62 8 3
Trip Free Coupling Lever
63
Breaker shaft
63 1
Lever
63 5
Lever
63. 7
Lever
64 2
Pawl
64 3
Lever (Lobes are omitted when
applied with screw type backing)
64 3 1
Pawl roller
68 . 1
Linkage
Figure 1 2
View of Mechanism Breaker Shaft i n Open Position
Opening
If the breaker is to be tripped locally, the tripping spring (64)
is released by p ressing the trip button , (54). In the case of an
electrical command being g iven , the shunt trip coil 52T, (54 1 ),
u nlatches the tripping spring (64 ) .
The tripping s p ring turns the b reaker shalt, (63 ) , via lever,
(63 5), the sequence being similar to that for closing .
Rapid Auto-Reclosing
Since the closing spring is automatically recharged by the
motor operating mechanism when the breaker has closed the
operating mechanism i s capable of an open-close-open d uty
cycle as required for rapid auto-rec losing .
Manual Operation
Electrically operated vac u u m circuit b reakers can be operated
manually if the control s u p p ly should fal l .
Manually Charging the Closing Spring ( Fig . 13)
I n sert the hand-crank, (50), i n hole, (50 . 1 ), and turn it clock
wise u ntil the indicator, ( 55), s hows "CHARGED".
The hand-crank is coup led with the charg ing mechanism via
an overru ning coupling thus, the operator is not exposed to
any risk should the control supply recover d u ring charg i n g .
5o
50 1
55
58
59
Hand crank
50
50. 1
Opening for hand-crank
53
Close button
54
Tnp button
Figure 13
Front View of Mechanism Enclosure Arranged for Manual
Operation
Page 1 7
54
68 1
64 2
5 5
'Closing spring charged'
Indicator
58
Open-Closed
59
Operations Counter