Static Time-Delay Undervoltage Tripping Device; Static Time Delay Undervoltage Wiring Diagram - GE AK-2-50 Maintenance Manual
Low-voltage power circuit breakers
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- Maintenance instructions manual (48 pages) ,
- Installation and operation manual (7 pages) ,
- Installation and operation manual (10 pages)
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GEK-7303
Low
Voltage
Power
Circuit
Breakers
Device consists of an
undervoltage
device
mounted
on the
bre¥er,
a static time delay
box mounted
separately
from the breaker and
a
control power
2
3
4
5
6
7
transformer
if
the
voltage is
other
than D.
C.,
208V AC or 230V, AC.
Refer
to
wiring diagram
0102C3698
(Fig.
23).
14
13
12
II
10
I.
SPRING
2. BRACl<ET
3
.
ADJUSTING PLATE ANO
SCREW
<t.
SHADING
RING
5.
ARMATURE
I
.
COIL
.
7.
CLAMP
9
8
.
MAGNET
9
.
·
SCREWS
10.
PIN
II.
ADJUSTING SCREWS
12.
LOCKING.
WIRE
13.
ADJUST
l~
G
SCREWS
8
14. TRIP PADDLE ANO
CLAMP
Fig. 22 (0133C9023) Static
Time·
- Delay Undervoltage
Tripping
Device
.
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I
i
-
•
J I
c""'"°"'•'"
I
:~-:.1
--··••1
...
.._
I
'•
t,
L
_ff..__.__,__.
A
•
t
t
•
Y.
k.
•C..•'t'
c..c...c
••
c._c •.
.J•.-1
,
.. "
'-••"""'P<·
·
C, ·
f fe,4
JU-.c.
c,
. ....
., ,
.. _""
0.,0-..Pr..
o..
.....
.. ,
. . .
-. . . . . . . . . ,
•..
.
,
...
,.,
.,
....
-
.
". , , . .
...
'"" t.t"lti,.
.,.
,,
...
,..,
.
,,.
,
.....
.
,
•
•• 04
"
'·
Ca •UtoA
l
•
w
•flt
....
.
o.,,.-
...
\
r-
~
·
St0A \-.,
•
f
lrt.
Fig.
23
(0102C3698)
Static
Time
Delay
Undervoltage Wiring Diagram
The voltage 208V
AC or
230V
AC~
to be
moni-
tored
is connected
to
Terminals
#1
and
#2
of
the
the time
delay
box.
The
undervoltage device on
the breaker is always connected through either its
secondary disconnects
or terminal
board,
to ter-
minals #4
and
#5
of
the
time delay box
•
The undervolt~e device is set
to
pickup
at
approximately Soto of bus voltage and
drop
out
between 30%
and
60%.
·
The
u.ndervoltage device coil circuit
is
con-
tinuously
rated
and will remain picked
up as long
as
the
voltage remains above
the predetermined
·
drop out
voltage.
The
time delay
is field ad-
justable
between 1
and
5 seconds,
it
is
factory
·
set at the
minim"Qm
setting;
and
one~ the
time
delay is establisher.,
it
is
consistent
•.
No
more than one u.ndervoltage
device
·should:
be
connected
to a static time delay box.
The
Static Time
Delay ·Undervoltage
can
also
be furnished in
conjunction
with the thermotector
.
control
package,
as
shown
·
on
wiring diagram
·
0102C3699 (Fig.
24).
Overheating
of
the motor
windings
causes the thermotector, imbedded
in·
the
motor windings, to open and allow the
'!2"
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