Figure 1 4 Operator Sequential Operation Diagram - Siemens 5-FSV-350 Installation Operation & Maintenance

Interrupter/Operator
Description
Control voltage appl1ed
Undervoltage
Spring Charg1ng
88
Oev1ce 2r
Motor Energ1zed
'
P1cks up
•
Clos1ng Spring
Fully Charged
LS21 and LS22 open LS3 opens 1 n senes
T o de-energ1ze spr1ng w1th ant1-pump relay
88
charg1ng motor 52y
--------------
,.-
No act1on 1
Open 52b 1n ser�es
w1th spr1ng release
Clos1ng cofT!mand
s o l e n o 1 d ( 5 2 S R C )
when
b l o c k s s p r 1 n g
Breaker
release
Closed
No act1on '
Relay 52y p1cks u p
t h r u c l o s e d
contact and opens
Breaker aux1l1ary
52a contacts
sw1tches 52a (NO)
1n ser1es
ard 52b (NC)
w1th the tnpp1ng
change state
solenoid close to
er<able a tnp
operat1on
L-- - - - - - - - - - - - ----------------------------
Rapid auto-reclosing
T h e closing spring 1 s recharged
automatically as described
above Therefore, when the
breaker is closed both its
spr1ngs are charged (The
closing spring charges the
tripping sp ring du ring closing)
As a result, the breaker 1s
0-t-CO
capable of an operating
cycle (dead time
"t'
0 3s)
�
The dashed line shows the
by
operating sequence init1ated
impairing the closing command
Optional Items
•
Operator Sequential Operation Diagram
Figure 1 4
LS41 closes to s1gral
clos1rrg spr1 f""1 Q S
charged
- - - - - - -----------
Breaker
Open
S p r m g release so-
leno1d actuated thru
the closed 52b con-
t a c t and t w o N C
Breaker
01'8'l contacts ol relay 52y
Clos ng spr1rg
charged
ro1
The closmg spr1ng IS The tr1pp1ng spr1ng IS
unlatched charged
L S 3
The c1rcu1t-b reaker
Contacts LS21 and
closes
LS22 close to
energ1ze motor
LS3 closes and LS4
opens to cancel
closmg spr1ng
s1gnal
Shunt Trip Co1l. 52T,
Undervoltage dev1ce. 27
can only be act1vated
IS act1vated by openmg a
when the ser1es
NC contact 1n senes w1th
connected 52a
27 or by loss or
contact 1s closed
reduct1on of tnpping
voltage
Shunt Tnp Co1l
52T
unlatches the tnpp1ng spnng
Closing
Ant1- pumping feature (Dev1ce 52y)
Care must be taken to see that a cont1nuously
applied closing command does not cause the
breaker to reclose after
fault. otherwise it may sustam damage by the
"pumping effect
Spring Release Coil 52SRC unlatches clos1ng spr1ng and
breaker closes
- - - - - - -
- ,
Motor cutoff sw1tches LS21 LS22 and LS3 are closed because
closmg spr1ng IS discharged
Before the spnng charge motor
spring and opened LS3 ant1 pump relay 52y p1cks up and
seals 1n
The ant1-pump relay 52y opens two contacts 1 n ser1es w1th the
Spnng Release Co1l 52SRC
88
The spnng release soleno1d IS now blocked and can not be
act1vated until sprmgs are fully charged and close command IS
removed
Tripping
Tnp
command
Undervoltage dev1ce 27. 1s
activated by closmg NO
contact, shortmg the 27 boll
The NO contact IS
connected across 27 by 52 a
contact thus the NO contact
IS only effect1ve w1th breaker
closed
Undervoltage dev1ce
unlatches the !ripping spnng
C�rcu1t-breaker !rips
Page 18
has tr�pped out on a
1!
Cont1nuous clos1ng command
88
has recharged the clos,ng
Secondary release
dual t n p funct1on
Act1vated by remote
tnp command contact
NO
unlatches the tripping spring