Function description
Function description
FK 3-12 spring operating mechanisms
FK 3-12 spring operating mechanisms
For circuit
For circuit brea
breakers
kers
06.04.2011
06.04.2011
48-020-212EN02
48-020-212EN02
7/15
7/15
Operating states and
Operating states and
Interlock functions
Interlock functions
Operating state 2: steady
Operating state 2: steady
Operating state
Operating state
1: Transient
1: Transient
Motor
Closing
Motor
Closing
Opening
Opening
Motor
Motor
Closing
Closing
Opening
Opening
Operating state 4: steady
Operating state 4: steady
Operating state
Operating state
3: Transient
3: Transient
Motor
Motor
Closing
Closing
Opening
Opening
M
M
S
S
1
1
S
S
2
2
S
S
2
2
S
S
1
1
Y
Y
1
1
Y
Y
2
2
Motor
Motor
Closing
Closing
Opening
Opening
Circuit breaker
Circuit breaker
Closed / open
Closed / open
Mechanical closing interlock : closing op-
Mechanical closing interlock : closing op-
eration disabled
eration disabled
Mechanical closing interlock : closing op-
Mechanical closing interlock : closing op-
eration enabled
eration enabled
Closing
Closing spring
spring discharged
discharged
S1
S1
Auxiliary
Auxiliary switch
switch
Closing
Closing spring
spring charged
charged
S2
S2
Motor
Motor limit
limit switch
switch
Y1
Y1
Closing
Closing coil
coil
Y2
Y2
Opening
Opening release
release coil
coil
Note
Note
•
•
The following functions will now be
The following functions will now be described
described : charging the energy
: charging the energy
store, closing, recharging and opening. The operating mechanism and
store, closing, recharging and opening. The operating mechanism and
the circuit breaker pass through the operating states in the order
the circuit breaker pass through the operating states in the order
1
1
→
→
2
2
→
→
3
3
→
→
4
4
→
→
2
2
Summary of Contents for FKG1X
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