Advertisement
Power Circuit
Breakers ,
GEK
-
7310 A
POWER SENSOR
OVERCURRENT TRIP DEVICE
OPEN FUSE LOCKOUT
DEVICE (
FIG
.
32 )
This device
automatically
trips
the
fuse breaker
if
one
of the fuses opens
.
When this
happens
,
the
breaker
is locked open until the
re set
button
( 1 )
,
Fig
.
32
,
of the phase involved is
pushed
.
The breaker
should
not
be reclosed
,
of
course
,
until the opened
fuse is
replaced
.
NOTE
: Detailed servicing procedures for
the POWER SENSOR trip device PS 1
-
A
-
1
are contained
in publication GEK
-
7309
.
Instructions
on use
of the
POWER
SENSOR
Test Kits PST
-
land PST
-
l
-
l
are
provided
in publication GEK
-
7301
.
The
tripping rod (
5
) should be
set so
that
any
solenoid will
cause
the
breaker
to
trip
before the
solenoid
armature
closes against its
magnet
.
This
can
be
checked
by
moving
each
armature
towards
its
closed
position and noting that tripping
takes
place
at
least
l
/
32
-
inch before travel
ends
.
The
POWER SENSOR
is
a
solid
-
state
,
direct
-
acting
,
self
-
powered trip
device system
.
It
com
-
prises
four ( 4 )
major
components
( Fig
.
33
)
:
n
T
\
r
i
»
©
i
5
/
/
»
\
T
\
\
> »
1
-
H
-
ri
M
3
Ik
Frfri
I
2
I
1
.
R e s e t Button
2
.
Armature
3
.
Solenoid
4 . Trip
Paddle
5 .
Tripping Rod
i
Fig
.
32
. ( 108
D
8133 ) Open fuse
lockout device
31
Advertisement
