GE AK-50 Series - Reverse Current Tripping Device; Reverse Current Tripping Device Adjustments; Reverse Current Tripping Device Replacement; Power Sensor Trip

i
-
'
,
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n
14
(
TOP
OF
TRIP
ROD
(
3
)
2
A
13
2
B
3
4
12
5
6
8
1
.
Trip
Paddle
Series
Coil
Adjusting
Nut
Locking
Nut
Trip
Rod
Trip
Crank
Setting
Sealing
Screw
Calibration
Spring
Potential
Coil
Calibration
Nut
Pole
Pieces
Armature
Counter
Weight
Stop
Screw
Mounting
Screw
Screw
10
2
.
2
A
.
u
v
2
B
.
9
3
.
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4
.
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5
.
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6
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3
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8
7
.
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—
—
AUX
.
SW
8
.
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B
9
.
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o
3
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4
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10
.
11
.
12
.
13
.
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.
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-
B
6
Fig
.
31
(
383
A
691
,
215
D
175
)
Keverse
current
tripping
device
Replacement
of
the
EC
-
2
,
EC
-
2
A
device is
accomplished
by
the
same
procedure
described
for
the
EC
-
1
series
trip
device
:
however
,
in
some
cases
,
when
replacing
an
EC
-
1
device
with
an
EC
-
2
,
EC
-
2
A
it
will
be
necessary
to
replace
the
trip
paddles
on
the
trip
shaft with
ones
which
are
slightly
longer
.
When
required
these
will be
provided
with
the
replacement
trip
units
„
The
top
edge
of
the
movable
nut
(
11
)
serves
as
an
index
pointer
and
should
be
lined
up
with
the
center
of
the desired
calibration
mark
(
15
)
to
obtain
the
proper
instantaneous
trip
setting
.
The
trip
screw
(
6
)
on
the
end
of
the
armature
(
7
)
should
be
set
so
that
it
does
not contact
the
trip
paddle
on
the
trip
shaft until the
air
gap
between
armature
and
pole
piece
is
reduced
to
3
/
32
in
.
or
less
,
measured
at
the
rivet
in
the
pole
piece
.
Also
,
the
armature must
have
a
minimum
of
1
/
32
in
.
of
travel
beyond
the
point
in
its motion
at
which
the
breaker
is
tripped
.
Pickup
settings
on
the
cover
of
NOTE
:
the
EC
-
2
.
EC
-
2
A
device
are
calibrated
for
the
specific
device
.
When
replacing
covers
,
replace
on
associated
device
.
32
Courtesy of NationalSwitchgear.com