Alstom FKG1X - Page 64

Function descriptionFunction description
FK 3-12 spring operating mechanismsFK 3-12 spring operating mechanisms
For circuit For circuit
breabrea
kerskers
06.04.201106.04.2011
48-020-212EN0248-020-212EN02
5/155/15
AuAu
xixi
lili
airair
e swe sw
itit
chch
••
Auxiliary switch Auxiliary switch
70.21 Coupled to 70.21 Coupled to
main shaft main shaft
70.12 serves as 70.12 serves as
a refer-a refer-
ence for the main contact for control, signaling and interlock functionsence for the main contact for control, signaling and interlock functions
••
When the When the
circuit breaker circuit breaker
is closed, is closed,
one contact one contact
of auxiliary of auxiliary
switch 70.21switch 70.21
interrupts the closing coil circuit and thus prevents further electrical ex-interrupts the closing coil circuit and thus prevents further electrical ex-
citation.citation.
••
When the When the
circuit breaker is circuit breaker is
in the in the
tripped position, otripped position, o
ne contact of ne contact of
auxil-auxil-
iary switch 70.21 breaks the operating release coil circuit and thus pre-iary switch 70.21 breaks the operating release coil circuit and thus pre-
vents further electrical excitation.vents further electrical excitation.
MotoMoto
r limit r limit
switchswitch
••
Motor limit Motor limit
switch 70.24 closes switch 70.24 closes
and interrupts the and interrupts the
motor circuit. motor circuit.
It alsoIt also
performs interlock functions.performs interlock functions.
••
While While
closing closing
spring spring
70.25 70.25
is is
being being
charged, one charged, one
contact contact
of mof m
otor otor
limitlimit
switch 70.24 interupts the closing coil circuit and thus preventsswitch 70.24 interupts the closing coil circuit and thus prevents
premature electrical closing operation.premature electrical closing operation.
MeMe
chanical closchanical clos
inging
interlockinterlock
••
When the When the
circuit breaker is circuit breaker is
closed, a closed, a
lever coupled lever coupled
to main to main
shaft 70.12shaft 70.12
disables closing latch 70.05 and prevents any further release of thedisables closing latch 70.05 and prevents any further release of the
closing system.closing system.
IndicatorsIndicators
••
Circuit breaker Circuit breaker
position indicator position indicator
70.52 displays 70.52 displays
the position the position
of the of the
mainmain
contact (I or O).contact (I or O).
••
Spring position indicator Spring position indicator
70.31 displays the 70.31 displays the
state (charged or distate (charged or di
s-s-
charged) of closing spring 70.25.charged) of closing spring 70.25.
AuAu
xixi
lili
airair
y dy d
evievi
cesces
and toolsand tools
••
Mechanical Mechanical
manual manual
releases 70.07, releases 70.07,
70.13 permit 70.13 permit
switching operationsswitching operations
during field service.during field service.
••
Hand crank Hand crank
70.53 permits 70.53 permits
manual manual
charging of charging of
closing spring closing spring
70.25.70.25.
AcAc
cesces
soso
riri
eses
••
Cabinet Cabinet
to to
protect protect
against against
weather weather
and and
contact.contact.
••
Heater Heater
to to
prevent prevent
condensation.condensation.
••
Mechanical Mechanical
operating operating
countercounter
••
Mechanical Mechanical
device device
to to
delay delay
opening opening
time time
(option)(option)
••
Undervoltage Undervoltage
release release
(option)(option)
••
Interior Interior
lighting lighting
(option)(option)
••
Other electricOther electric
al al
equipment equipment
as as
specified specified
by by
customer customer
(option).(option).