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X
.
'
H
-
'
Installation
and
Operation
0
i
Type
AK Power
Circuit Breakers
GEH
-
2021
charged
mechanism
atm
liar
to the
one
used
AK
-
50
/
7
S
/
100
electrically
operated
breakers
.
AK
-
2
-
fiO
/
75
/
l
00
breakers
are
closed
by
rotating
the
closing
handle
counterclockwie
©
through
approxi
-
mately
120
degrees
,
and
then clockwise
degrees
to
the normal
on
manual
I
OTt
-
Cjj
oux *
rv
i
"
T
^
WtTCS
|
—
il
-
J
REMOTE
OL
06
C
CLOtm
T
*
'
F
P
«
M
SWHCH
~
r
^
T
4
^
4
*
^
4
=
^
-
sis .
#
\ \
L
_
~
—
baefe
—
throu
Jiandie
position
.
Four
such complete
move
-
menta of
the handle
arc
required
to
close
w
the breaker
.
During
the
four counterclock
'
'
wise
movements
and
the first three
clock
-
wise
movements
of the
handle
,
the springs
•
;
?
charged
,
After
approximately
70
de
-
crees
travel of the fourth clockwise
handle
movement
,
the spring
charged mechanism
is
driven
aver
-
center
and
the breaker
ciooee
.
A
charge
-
indicator
,
numbered
1 to
viewed
through
the breaker front
escutcheon
,
moves
with
each complete
handle
movement
and indicates the number
of
complete
handle
movements
that have
bean
performed
.
JW
£
JL
_
Ul
ss
II
r
•
i
ir
5
'
4
^
L
0
>
UL
m
ajjxm
M
COfL
: r
!
LEGEND
(
M
)
-
CLOSING SOTW
£
*
RELAY
O
0
)
L
*
•
RELAY OCRfTACT
V
*
a
V
MECHANICALLY
OFERATIO WRTCHEB
+
«
NORMALLY
OPER
«
WlT 6
*
»
CONTACTS
£
«
R 0 RMAU
.
Y
CLCrtfcD fWTCM
CONTAOTB
L
•
AOXJUAAY
5
W
»
7 CH CONTACT
LEBERO
«
X RELAY COL
v
.
x
IWLAY
CONTACT
X
» VPIEEAY
OOtt
.
y •
Y
RELAY
CQRTAOT
#
WCHAtllOALLY
DP C
ft
ATE
0
SWITCH
*
*
f
.
NORMALLY
OREN
SWtTc
*
COTTA
0 T
*
+
«
NORMALLY OUMEO
SWITCH
OCNTA
0 T
6
ELECTRICAL CLOSING
(
Figures 6 and 7 )
STANDARD BREAKERS
Fig
.
7
35 jcipiiried
Elementary piogrem
Internal wiring AK
-
X
>
;
75
and
100
Fig
,
6
Simplified Elementary
Eiasreua
internal
Wiring
AK
-
15
and
25
A &
-
18
and AK
-
25
electrically operated
breakers
are
closed by
a
solenoid coll
.
The
armature
of the adenoid
Is
linked to
the
breaker mechanism and its
movement ,
energised
,
operating the
X
contacts
.
This
operating through
the mechanism
,
closes
seals in
the
X
relay
and energizes the
the breaker
.
The closing
solenoid
circuit
motor
once
again
and the
closing operation
may
be operated
by
a
push button closing
takes
place
,
switch
on
the breaker
or
by
a remote
(
twitch
or
relay
,
depending
on
the individual
arrangements
desired
.
When
a
closing
signal
Is
given ,
the X
relay coll
is
ener
-
gy
ed and
It
in
turn
closes Its
contacts
.
One
Functionally
,
the quick close mecha
-
of these seals In
the
X
coll circuit ;
the
nlem differs from the
standard electrical
other three
,
which
are
arranged
in
aeries
,
.
mechanism
in
that
the pre
-
charge
operation
energise
the
solenoid
closing
coil
.
As
the
is
extended
to
completely
charge
the
closing
breaker closes
,
a
mechanically operated
springs
.
At the
end
of the
charging opera
-
switch opens
one
pair
of its
contacts
(
bb
)
tton
,
which takes approximately
5 seconds
,
and closes
another
<
aa
)
.
The
contacts
a
latch
plate engages
the
prop roller to
which open
cut
out the
X
relay
coll
.
The
prevent
the
closing springs
from
dls
-
contacts
which close
energise
the
Y
relay
charging
.
cotif
whose
contacts
now
seal
in the Y coU
and hold open the X
relay
coil circuit
.
This
prevents
another closing operation If
one
of the protective devices
operates
to
trip
the
breaker
before
contact at
the closing
switch Is released
.
and de
-
energize
the
control
relay
.
The
auxiliary
switch
contact
opens
preventing
the
control relay from being energized until
the
breaker
la tripped
open
,
with the Cr
switches
closed *
the
motor
charges
the
closing springs ready
for
the next
closing
operation
.
^
5
QUICK
CLOSE BREAKERS
( Figure 8 )
MANUAL OR
MAINTENANCE CLOSING
OF ELECTRICAL
BREAKERS
i
All
electrical breakers may be closed
manually by
means
of the
maintenance
handle
furnished
with the breaker
or
switch
-
gear
.
To close
AK
-
1
-
15
/
25
breakers
:
WUh
the
closing
springs
fully
charged
1
,
Make
sure
handle is in proper
position
,
the breaker Is ready
for
a
closing
operation
Handle Is stamped this side up
.
upon release
of the
prop roller
.
This may
be
accomplished
either manually
,
by
de
-
pressing
the
closing lever
on
the breaker
,
or
electjicaUy
by
closing the
remote
clos
-
Large
AK
breakers (
AK
-
& 0
/
75
/
100
)
lug
switch
,
upon
the
release of the
prop
are
closed
by
the
discharge
of
a
closing
roller
the closing springs discharge
and
spring
.
This
rotates a crankshaft
which
,
close
the breaker
In the
same
manner
as
by
means
of
an
attached
roller
,
operates
on
the standard
electrical breaker
.
A
closing
cam
,
forcing the movable
breaker
contacts
against the stationary
contacts
.
With control
voltage applied
,
the
motor
The
closing spring
Is
charged through
the
is
energized
through
the
G
switch contacts
,
operation
of
a
motor
and gear
reduction
and
charge
*
the closing
springs
.
When the
springs reach the fully
charged position
,
the mechanically operated
switches operate
,
The electrical control system
is
com
-
reversing
their
contacts
.
Upon operation
prised
of ftfiX relay
,
two
double
contact
of these switches the
motor ts
stopped by
mechanically operated
switches
(
F and G )
,
the opening
of
the
G switch
.
The closing
a
push
button
closing
switch
and any
means
of
the
F switch prepares the breaker
for
for
remote
closing
which
the
user
may
a closing
operation
,
j
?
incorporate
Into
the
system
.
When
voltage
is first
applied
to
the breaker
,
(
before any
u
?
t
closing signal
ts
given
)
the
motor
is
ener
-
&
Sized
through
two
of the X
relay
contacts
and
the
two
G
switch
contacts
.
The
motor
then . compresses
the
closing
springs
to the
^
' pro
-
charged
'
1
position
at
which
point the
£
mechanically
operated
F and
G switches
are
operated
.
'
This opens the G
contacts
,
stopping the
motor
,
and closes the F
con
-
tacts
,
which
readies the
system
for the
actual
closing
of the
breaker
.
When
the
push
button
or
remote
switch
signals for
«
•
closing
operation
,
the X relay coll
ts
2
.
Flace
the handles
fork
like fingers above
the
armatures
stop
nut that
extends
below
the
magnet
behind the front
escutcheon and lift up
.
This
forces
the
dosing
.
t he
breaker
'
s
armature
down
contacts
.
CLOSING
I
SwffCH
—
T
+ S 88 F
:
unit
.
£
"
5
^ -
0
=
~ A
4
=
f
UJ
g ?
-
X
-
y
M
=
jfcQ
;
-
L
(
l
[
)
\
w
See
A closing signal
now
given energizes
the
control
relay
X
whose
contacts
close
and
complete
the circuit
through the closing
relay
coll
.
With
the closing relay coU
energized
the breaker closes as described
above
.
At the
same
time
the
closing
relay
contact
closes
to
energize
the
anti
-
pump
relay
causing its
contacts to
viding
the anti
-
pump
feature
.
When the breaker closes
,
the mechani
-
cal
operated
G
switches close
to
energize
the
motor
again and
the
F
switches open
i
d
X
LEGEND
Ec
:
ccSo 5
r
4 ffiLW
£
-
ANTI
-
PUMP fifXAY CONTACT 5
• 3
"
;
reverse
pro
-
M
-
CLOSING
MQTOfc
W
-
ANTI
-
PUMP
RELAY
CO
*
L
i
-
cx
\
% i
mtfssr
^
4
:
-
NORMALLT
OPEN
SWITCH CONTACTS
£
-
NORMALLY
CLOSE 0
SWITCH CONTACTS
SlMFUn
&
D
ELEMENTARY DIAGRAM
JNTCftNAf
.
wiBlNg
QU
>
CK
CLOSE SftEAK
^
H
7
Fig
.
8
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