GE MicroVersaTripPlus AK-50 User manual

Micro
Versa
Trip
Plus
and
MicroVersaTrip
PM
Conversion
Kits
TM
For
GE
Types
AK
-
50
,
AKU
-
50
,
AKS
-
50
,
AKT
-
50
,
AK
-
75
,
AK
-
100
Low
Voltage
Power
Circuit
Breakers
INTRODUCTION
GE
Conversion
Kits
are
designed
to
upgrade
existing
GE
Low
Volt
-
age
Power
Circuit
Breakers
,
rather
than
replacing
the
entire
breaker
.
The
Conversion
Kits
contain
enhanced
solid
-
state
MicroVersaTrip
Plus
or
MicroVersaTrip
PM
Trip
Units
,
representing
the
latest
techno
-
logical
advancement
in
GE
trip
systems
.
MicroVersaTrip
Plus
and
MicroVersaTrip
PM
Conversion
Kits
are
designed
and
breaker
tested
to
conform
with
ANSI
Standard
C
37.59
,
allowing
the
retrofitter
to
properly
install
and
acceptance
test
the
breaker
.
This
publication
covers
installa
-
tion
of
MicroVersaTrip
Plus
and
PM
Conversion
Kits
on
GE
Types
AK
-
50
,
AKU
-
50
,
AKS
-
50
,
AKT
-
50
,
AK
-
75
,
and
AK
-
100
Low
Voltage
Power
Circuit
Breakers
.
Each
Conversion
Kit
contains
all
ap
-
propriate
material
to
convert
from
an
existing
GE
Type
EC
,
Power
Sensor
,
ECS
or
SST
trip
system
.
Courtesy of NationalSwitchgear.com

TABLE
OF
CONTENTS
SECTION
1
GENERAL
INFORMATION
3
PRIOR
TO
INSTALLATION
SECTION
2
3
SECTION
3
FRONT
FRAME
BREAKER
CONVERSION
.
.
Relocating
,
Remounting
W
and
X
Relays
Installing
the
Flux
Shifter
Installing
the
Programmer
Mounting
Bracket
Installing
the
Programmer
Harness
Installing
the
Communications
Harness
4
-
11
4
5
-
8
9
10
11
SECTION
4
BACK
FRAME
CONVERSION
Modifying
the
Crossbar
Installing
Phase
Sensors
12
-
14
12
13
-
14
SECTION
5
FOUR
-
WIRE
GROUND
FAULT
OPTION
Stationary
Breaker
Conversion
Draw
Out
Breaker
Conversion
Installing
Neutral
Sensors
15
-
18
15
16
-
17
18
SECTION
6
EQUIPMENT
CONVERSION
Installing
Mounting
Brackets
..
19
-
20
19
-
20
SECTION
7
INSTALLING
THE
PROGRAMMER
21
SECTION
8
TESTING
AND
TROUBLESHOOTING
Cabling
Diagrams
22
-
24
24
Courtesy of NationalSwitchgear.com

SECTION
1
GENERAL
INFORMATION
grammer
unit
have
been
furnished
.
Whenever
the
ground
fault
trip
element
is
furnished
for
breakers
applied
on
4
-
wire
systems
,
note
that
an
associated
neutral
sensor
(
CT
)
is
required
for
separate
mount
-
ing
in
the
equipment
.
Make
sure
that
retrofitted
breakers
are
applied
within their
short
circuit
rat
-
ing
.
For
example
,
wThen
the
trip
elements
of
the
breaker
are
to
be
changed
from
long
-
time
instanta
-
neous
to
long
-
time
,
short
-
time
,
the short
-
time
rating
would
govern
the
application
.
As
a
service
-
related
consideration
,
the installation
of
the
MicroVersaTrip
Plus
or
PM
kits
provides
an
excel
-
lent
opportunity
'
to
perform
normal
maintenance
on
the breaker
,
particularly
when
the
front
and
back
frames
are
separated
.
Such
procedures
are
de
-
scribed
in
the installation
and
maintenance
manu
-
als
supplied
with the Breakers and
Equipment
.
GE
Conversion
Kit
installation
is
straightforward
,
but
does
require
careful
workmanship
and
atten
-
tion
to
these
instructions
.
Familiarity
’
with
the
breaker
itself
is
highly
desirable
.
The
general
ap
-
proach
is
to
first
strip
the breaker
of
its
existing
trip
devices
,
then
install
the
MicroVersaTrip
Plus
or
PM
Kit
components
.
Following
this
procedure
,
the
con
-
verted breaker
is
performance
tested
,
prior
to
re
-
storing
the
breaker
to
service
.
The
majority
of
breaker
kit
installations do
not
re
-
quire
any
customized
assembly
work
.
However
,
some
conversions
may
involve unusual
mounting
circumstances
or
accessor
)
'
combinations
which
ne
-
cessitate minor modification and
/
or
relocation
of
a
component
(
s
)
.
In
most
instances this
supplemen
-
tary
work
can
be done
on
site
.
Preparatory
to
the conversion
,
the installer
should
verify
that
the
appropriate
current
sensors
and
pro
-
SECTION
2
-
PRIOR TO
INSTALLATION
•
Turn
off
and lock
out
the
power
source
feeding
the breaker
prior
to
attempting
any
installation
,
maintenance
,
or
modification
.
Follow
’
all
lock
-
out
and
tagging
rules
of
the National Electrical
Code
and
all
other
applicable
codes
.
•
Do
not
work
on
a
closed breaker
or
a
breaker
with the
closing
springs
charged
.
Trip
OPEN
the breaker
and be
sure
the stored
energy
springs
are
discharged
avoiding
the
possibility
that
the breakers
may
trip
OPEN
or
the
charg
-
ing
springs discharge
,
causing
injuries
.
•
For
both
stationary
and draw
out
breakers
,
trip
OPEN
,
then
remove
the breaker
to
a
well
lighted
work
area
before
beginning
work
.
•
Do
not
perform
any
maintenance
including
breaker
charging
,
closing
,
tripping
,
or
any
other
function
which
could
cause
significant
move
-
ment
of
the breaker
while
it
is
on
the
draw
out
extension
rails
.
•
Do
not
leave
the
breaker
in
an
intermediate
po
-
sition
in
the
switchgear
compartment
.
Always
leave
it
in
the
CONNECTED
,
TEST
,
or
DIS
-
CONNECTED
position
.
Failure
to
do
so
could
lead
to
improper
positioning
of
the
breaker
and
flashback
.
Before
starting
any
work
,
turn
off
and lock
out
all
power
sources
leading
to
the
breaker
(
primary
’
and
secondary
)
.
Remove
the breaker
to
a
clean
,
well
lighted
work
area
.
WARNING
:
Low
Voltage
Power
Circuit
Break
-
ers
utilize
high
speed
,
stored
energy
spring
op
-
erating
mechanisms
.
The breakers and their
enclosures
contain
interlocks
and
safety
7
fea
-
tures
intended
to
provide
safe
,
proper
operat
-
ing
sequences
.
For
maximum
personnel
pro
-
tection associated with installation
,
operation
,
and
maintenance
of
these
breakers
the follow
-
ing
procedures
must
be
followed
.
Failure
to
fol
-
low these
procedures
may
result
in
personal
in
-
jury
or
property
damage
.
•
Only
qualified
persons
,
as
defined
in
the
Na
-
tional
Electrical
Code
,
who
are
familiar
with the
installation
and
maintenance
of
low
voltage
power
circuit
breakers
,
and
switchgear
assem
-
blies
,
should
perform
any
work associated
with
these
breakers
.
•
Completely
read
and
understand
all
instructions
before
attempting
any
breaker installation
,
op
-
eration
,
maintenance
,
or
modification
.
3
Courtesy of NationalSwitchgear.com

SECTION
3
FRONT
FRAME
BREAKER
CONVERSION
FRONT
VIEWS
OF
BREAKER
The
front
frame
conversion
consists
of
the
following
:
1
.
Separation
of
the
front
and
back
breaker
frames
.
Refer
to
the
appropriate
installation
and
maintenance
manuals
supplied
with
the
break
-
ers
and
equipment
for
instructions
on
accom
-
plishing
the
separation
.
Copies
of
these
publica
-
tion
may
be
obtained
from
your
local
GE
sales
office
.
NOTE
that
AK
-
75
and
AK
-
100
breakers
do
not
need
to
be
separated
to
complete
the
conversion
.
2
.
Relocating
and
remounting
the
W
and
X
relays
on
AK
-
50
,
AK
-
75
,
AK
-
100
electrically
operated
breakers
with
EC
trip
devices
.
3
.
Installing
the
flux
shifter
and
trip
paddle
.
4
.
Installing
the
programmer
mounting
bracket
.
5
.
Installing
the
programmer
wire
harness
.
6
.
Installing
the
communication
wire
harness
(
when
required
)
.
X
/
a
cz
:
\
w
V
1
—
^
/
x
/
i
I
BEFORE
I
\
\
\
CD
CD
Relocating
,
remounting
W
and
X
Relays
a
.
Remove
the
W
Relay
and
install
the
mounting
bracket
supplied
with
the
conversion
kit
to
the
upper
left
side
of
the
front
frame
.
See
Fig
.
3
-
1
.
b
.
Remove
the
X
Relay
and
its
mounting
bracket
.
Use
the
new
bracket
supplied
with
the
conver
-
sion
kit
to
remount
the
X
Relay
in
its
existing
position
.
See
Fig
.
3
-
1
and
3
-
2
.
AFTER
Fig
.
3
-
1
.
Relocating
W
Relay
and
Remounting
X
Relay
Fig
.
3
-
2
.
New
W
and
X
Relay
Mounting
Bracket
Installation
4
Courtesy of NationalSwitchgear.com

SECTION
3
FRONT
FRAME BREAKER
CONVERSION
Installing
the Flux
Shifter
The
installation
procedure
of
the flux shifter
will
vary
depending
on
the
type
of
breaker
and
trip
de
-
vice
involved
.
In
some cases
mounting
holes
must
be
added
,
terminal
blocks
relocated
or
breaker
side
rails removed
.
BREAKERS
WITH
EC OR POWER
SENSOR
TRIP
SYSTEMS
1
.
Add the
flux
shifter
mounting
holes
to
the left
side
of
the
front frame
.
The drill
pattern
for
the
required
three
(
3
)
%
2
M
diameter
holes is
given
in
Fig
.
3
-
4
.
2
.
Install
the
new
flux
shifter
,
position
the
insula
-
tor
and
programmer
connector
bracket
as
shown
in
Fig
.
3
-
10
.
BREAKERS
WITH
A
SIDE
BRACKET
Drill
a
hole diameter
,
into the
mounting
base
(
Fig
.
3
-
3
)
.
This
will
provide
the
necessary
clearance
for
the
bracket
.
The
hole
locations
are
given
in
Fig
.
3
-
5
.
Remove
the
side
bracket
from
the
frame
and
drill holes
as
shown
in
Fig
.
3
-
4
.
Return
the side
bracket
to
its
original
location
upon
completion
of
this
step
.
Install
the
new
flux shifter
device
.
The bottom
screw
must
be inserted
in
the
reverse
direction
,
i
.
e
.
,
the
screw
must
be fed
from
the
inside
of
the
frame
to
the
outside
.
Use
tape
to
hold the
nut
on
the
wrench
.
1
.
2
.
3
.
Fig
.
3
-
3
.
Flux
Shifter
$
O
t
-
1.1
-
45
—
o
T
.
75
*
1.275
o
O
Side View
Mounting
Base
Fig
.
3
-
4
.
Mounting
Hole
Pattern
Fig
.
3
-
5
.
Mounting
Base
Adjustment
5
Courtesy of NationalSwitchgear.com

SECTION
3
FRONT
FRAME
BREAKER
CONVERSION
Installing
the
Flux
Shifter
(
Cont
’
d
)
AKU
-
50
BREAKERS
ONLY
1
.
For
easier
installation
of
AKU
-
50
breakers
,
the
Open
Fuse
Lock
Out
(
OFLO
)
device
may
be
separated
from
the
breaker
to
allow
insertion
of
the
flux
shifter
.
To
do
this
,
remove
the
three
bolts
attaching
it
to
the
base
.
2
.
The
terminal
block
must
be
remounted
on
the
upper
left
hand
side
of
the
breaker
.
Certain
parts
,
(
not
provided
with
the
conversion
kit
)
,
and
tools
are
required
to
complete
this
task
:
•
Six
strips
of
14
AWG
wire
•
Wire
splice
•
12
butt
splices
•
Wire
labels
•
Drill
and
size
“
F
”
drill
bit
•
/
is
-
18
tap
•
Flathead
screwdriver
•
Two
r
/
i
6
-
18
bolts
and
lock
washers
To
remount
the
terminal
block
:
Step
1
.
Drill
and
tap
two
(
2
)
holes
for
the
Yi
6
-
18
nuts
.
See
Fig
.
3
-
6
for
hole
locations
.
Step
2
.
Separate
the
Open
Fuse
Lock
Out
(
OFLO
)
device
by
removing
the
three
bolts
shown
in
Fig
.
3
-
7
.
Step
3
.
Remove
the
wires
that
connect
the
(
OFLO
)
device
to
the
terminal
block
.
Step
4
.
Cut
the
wires
that
connect
to
the
coils
where
they
join
and
label
the
wires
.
Attach
butt
splices
to
all
twelve
open
ends
(
Fig
.
3
-
8
)
.
Fig
.
3
-
6
.
Terminal
Block
Mounting
Hole
Pattern
Fig
.
3
-
7
.
OFLO
Removal
Bolts
Fig
.
3
-
8
.
Wire
Connectors
with
Butt
Splices
6
Courtesy of NationalSwitchgear.com

SECTION
3
FRONT
FRAME
BREAKER
CONVERSION
Installing
the
Flux
Shifter
(
Cont
’
d
)
Step
5
.
Connect
the
strands
of
wire
to
the
(
OFLO
) (
Fig
.
3
-
9
)
.
Mount
the terminal
block
to
its
new
location
.
DO NOT
complete
the wire connections
until the
flux shifter is installed
.
Step
6
.
Install the
new
flux shifter
,
positioning
the insulator
and
programmer
connector
bracket
as
shown
in
Fig
.
3
-
10
.
Step
7
.
Connect
cables attached
to
terminal block and
tie
together
as
shown
in
Fig
.
3
-
11
.
Fig
.
3
-
9
.
Wire
Connected
to
(
OFLO
)
ECS
OR
SST
TRIP
SYSTEMS
Step
1
.
Remove
the
ECS
or
SST
Programmer
.
Step
2
.
Remove
the
existing
flux shifter device
and the
pro
-
grammer
control harness
.
Step
3
.
Install the
new
flux
shifter device
,
positioning
the
insulator and
programmer
connector
bracket
as
shown
in
Fig
.
3
-
10
.
EC OR POWER
SENSOR
TRIP
SYSTEMS
Step
1
.
Drill
the flux shifter
mounting
holes
at
the
left
side
of
the
front frame
.
The drill
pattern
for
the
re
-
quired
three
(
3
)
%
2
n
diameter
holes
is
shown
in
Fig
.
3
-
4
.
Step
2
.
Install
the
new
flux
shifter
,
positioning
the
insulator
and
programmer
connector
bracket
as
shown
in
Fig
.
3
-
10
.
Fig
.
3
-
10
.
Flux
Shifter
Installed
Fig
.
3
-
11
.
Relocated
Terminal
Block
and
Wire
Harness
7
Courtesy of NationalSwitchgear.com

SECTION
3
FRONT
FRAME
BREAKER
CONVERSION
Installing
the
Flux
Shifter
(
Cont
’
d
)
INSTALLING
THE
FLUX
SHIFTER
TRIP
PADDLE
L
For
breakers
equipped
with
an
ECS
or
SST
sys
-
tem
,
the
existing
flux
shifter
trip
paddle
will
be
used
with
the
new
flux
shifter
.
For
all
other
breakers
,
the
flux
shifter
trip
paddle
must
be
assembled
to
the
trip
shaft
as
shown
in
Fig
.
3
-
12
.
FLUX
SHIFTER
ADJUSTMENTS
Once
the
flux
shifter
and
trip
paddle
are
installed
and
the
breaker
frames
are
reassembled
,
the
follow
-
ing
adjustments
must
be
made
:
1
.
With
the
breaker
in
the
OPEN
position
and
the
mechanism
charged
,
set
the
gap
between
the
trip
paddle
and
the
end
of
the
flux
shifter
rod
at
0.100
inches
.
Use
a
0.100
-
inch
diameter
rod
,
not
supplied
,
as
shown
in
Fig
.
3
-
12
.
Set
the
adjuster
end
of
the
trip
rod
and
lock
it
in
place
with
the
jam
nut
.
Note
that
removal
of
the
buffer
stud
will
make
the
trip
paddle
easier
to
install
and
adjust
.
2
.
As
the
crossbar
travels
between
the
breaker
CLOSED
and
the
breaker
OPEN
positions
,
the
tang
of
the
actuator
bracket
must
clear
the
buffer
stud
.
If
insufficient
clearance
exists
,
loosen
the
two
mounting
screws
and
rotate
the
bracket
clockwise
to
take
up
mounting
hole
slack
.
Retighten
screws
.
3
.
OPTIONAL
TEST
:
The
flux
shifter
assembly
may
be
tested
by
closing
the
breaker
and
apply
-
ing
a
9
V
dc
power
source
to
the
flux
shifter
leads
.
The
red
wire
is
the
positive
lead
.
The
breaker
should
trip
.
8
Courtesy of NationalSwitchgear.com

SECTION
3
FRONT
FRAME BREAKER
CONVERSION
Installing
the
Programmer
Mounting
Bracket
MicroVersaTrip
Plus and
PM
programmers
mount
to
the
left side
of
the
front
channel
.
A
mounting
bracket
is
shock
-
mounted
to
a
plate
that
is
as
-
sembled
to
the
front
channel
as
shown
in
Fig
.
3
-
14
.
Use
Loctite
*
or
an
equivalent
retaining
material
on
the
mounting
screws
for
the
plate
assembled
to
the
front
channel
.
ECS
OR
SST
TRIP
SYSTEM
Replace
the
existing
plate
and
mounting
bracket
with the
new ones
provided
.
Assemble the
mount
-
ing
bracket
to
the
plate
using
the holes
closest
to
the
front of
the breaker
(
See
Fig
.
3
-
14
)
.
If
the
manual
indicator
assembly busing
on
AJK
-
50
manual
breakers
interferes with the
mounting
bracket
installation
(
Fig
.
3
-
14
)
,
then the
bracket will
have
to
be
modified
.
This is
accomplished
by
cut
-
ting
off
a
K
"
x
1
V
2
'
section
off
the
right
front of
the
plate
as
shown
in
Fig
.
3
-
15
.
EC
OR
POWER
SENSOR
TRIP
SYSTEMS
The
holes
for
the
new
plate
may
have
to
be
added
to
the
front
channel
.
The
drill
pattern
for
these
holes
is
given
in
Fig
.
3
-
16
.
Once
the
plate
is
in
-
stalled
,
assemble
the
mounting
bracket
to
the
plate
using
the holes
closest
to
the
front of
the
breaker
(
See
Fig
.
3
-
14
)
.
Fig
.
3
-
14
.
Plate
Assembled
to
Channel
*
Trademark
of
the
Loctite
Corp
Fig
.
3
-
16
.
Mounting
Plate
Hole
Pattern
l
Fig
.
3
-
15
.
Programmer
Mounting
Bracket and Plate
on
a
Type
AK
-
50
Breaker
9
Courtesy of NationalSwitchgear.com

SECTION
3
FRONT
FRAME
BREAKER
CONVERSION
CAUTION
:
Adapter
bracket
must
be
installed
onto
harness
plug
as
shown
in
Fig
.
3
-
17
.
Failure
to
do
so
will
result
in
harness
plug
failure
and
the
programmer
will
not
provide
protection
.
Installing
the
Programmer
Harness
The
programmer
harness
consists
of
the
mating
36
-
pin
programmer
connector
and
the
16
-
pin
front
frame
half
of
the
front
/
back
frame
connector
.
Re
-
fer
to
Fig
.
3
-
18
.
Assemble
the
adapter
bracket
to
the
36
-
pin
programmer
connector
(
with
bevels
to
right
side
)
by
pushing
bracket
over
notches
in
ends
of
plug
body
(
Step
1
)
.
Follow
Steps
2
-
5
of
Fig
.
3
-
18
to
complete
assembly
of
programmer
harness
to
pro
-
grammer
bracket
.
The
15
-
pin
connector
is
inserted
into
the
program
-
mer
connector
bracket
which
is
part
of
the
flux
shifter
assembly
.
See
Fig
.
3
-
10
.
Insert
the
connector
so
that
the
Number
1
pin
is
toward
the
breakers
'
top
,
right
-
hand
side
.
Route
the
harness
under
the
flux
shifter
base
.
At
-
tach
the
harness
to
this
base
using
the
wire
keepers
provided
.
Install
the
programmer
harness
as
shown
in
Fig
.
3
-
10
.
Include
the
flux
shifter
leads
with
this
harness
.
Join
the
4
-
pin
connector
on
the
programmer
har
-
ness
to
the
4
-
pin
connector
on
the
flux
shifter
.
Assemble
the
programmer
bracket
to
the
mounting
bracket
as
shown
in
Fig
.
3
-
17
.
NOTE
LOCATION
OF
BEVELED
EDGES
ON
PLUG
BODY
|
—
Oio
0000000
0
'
Hooooooooo
°
N o
oooooooo
_
JOO
o o
0
0 0
0 4
ADAPTER
BRACKET
o
STEP
1
.
PUSH
BRACKET
OVER
NOTCHES
IN
END
OF
PLUG
BODY
ffO
STEP
5
.
HOLD
PLUG
BODY
TIGHT
TO
THE
ADAPTER
BRACKER
AND
BEND
OVER
(
2
)
LOCKING
TABS
STEP
3
.
PRESS
ON
PUSH
NUTS
UNTIL
BRACKET
IS
HELD
FIRMLY
AGAINST
PROGRAMMER
BRACKER
v
oooooooo
o
'
ooooooooo
ooooooooo
ooooooooo
,
PIN
1
STEP
4
.
HOLD
PLUG
FIRMLY
BEND
LOCKING
TABS
!
STEP
2
.
PULL
WIRE
HARNESS
BRACKET
ASSEMBLY
UP
OVER
GUIDE
PINS
AND
PUSH
ALL
THE
WAY
DOWN
A
-
GUIDE
PINS
Lmnm
•
•
Fig
.
3
-
17
.
Programmer
Plate
Installation
Fig
.
3
-
18
.
Harness
Connector
10
Courtesy of NationalSwitchgear.com

I
SECTION
3
FRONT
FRAME
BREAKER
CONVERSION
Installing
the
Communications
Harness
(
When
Required
)
The
communications
harness
may
be
installed
on
either
side
of
the
breaker
,
depending
on
which
di
-
rection
the
compartment
door
swings
open
.
It
is
recommended
to
install
the
harness
on
the
door
'
s
hinge
side
,
away
from
any
moving
parts
.
The
cau
-
tion
label
should
be
stuck
on
front
of
the
breaker
where
it
can
be
seen
as
a
reminder
.
For
AKU
-
50
breakers
,
the
harness
must
be
con
-
nected
on
the
right
side
of
the
breaker
as
there
is
no
room
for
it
on
the
left
side
,
see
Fig
.
3
-
19
.
Drill
two
(
2
)
0.228
diameter
holes
,
using
a
#
1
drill
to
in
-
stall
the
harness
on
all
type
breakers
.
Figures
3
-
20
through
3
-
21
are
representative
examples
of
harness
connections
and
routing
directions
.
They
are
not
meant
to
be
all
-
inclusive
.
A
caution
label
,
Fig
.
3
-
22
,
should
be
mounted
on
both
the
breaker
door
,
and
the
compartment
door
as
a
warning
to
prevent
unnecessary
7
damage
.
Note
:
Hole
locations
for
bracket
mounting
as
shown
for
reference
only
.
The
positioning
of
the
commu
-
nication
disconnect
plug
is
dependent
on
the
con
-
figuration
of
the
breaker
installation
.
The
plug
may
be
located
by
a
field
engineer
during
job
assessment
or
installation
.
mesa
1
Fig
.
3
-
19
.
Communications
Harness
Installation
on
a
Type
AKU
-
50
Breaker
Fig
.
3
-
20
.
Mounting
Pattern
for
Types
AK
-
50
,
AK
-
100
Breakers
CAUTION
DISCONNECT
SECONDARY
BEFORE
REMOVING
BREAKER
.
Fig
.
3
-
21
.
Wire
Routing
Pattern
Fig
.
3
-
22
.
Caution
Label
11
Courtesy of NationalSwitchgear.com

SECTION
4
BACK
FRAME
CONVERSION
The
back
frame
conversion
consists
of
the
follow
ing
:
1
.
Modification
of
the
crossbar
assembly
for
the
flux
shifter
installation
.
2
.
Installation
of
the
phase
sensors
3
.
Installation
of
the
back
frame
harness
.
Crossbar
Modification
The
flux
shifter
’
s
reset
linkage
is
driven
by
the
ac
-
tuator
bracket
.
See
Fig
.
3
-
3
.
The
actuator
bracket
must
be
assembled
to
the
left
side
link
of
the
left
pole
,
as
shown
in
Fig
.
4
-
1
.
If
the
actuator
bracket
mounting
holes
are
not
in
the
left
side
link
,
the
holes
must
be
added
.
Drill
and
tap
two
5
/
i
6
”
-
18
holes
using
the
hole
pattern
give
in
Fig
.
4
-
2
.
Fig
.
4
-
1
.
Flux
Shifter
Actuator
Bracket
Installation
Fig
.
4
-
2
.
Actuator
Bracket
Mounting
FFoles
12
Courtesy of NationalSwitchgear.com

SECTION
4
BACK
FRAME
CONVERSION
Phase
Sensors
AK
-
50
,
AKS
-
50
BREAKERS
WITH
EC
OR
POWER
SENSOR
TRIP
SYSTEMS
Step
1
.
Remove
the
existing
trip
devices
and
harnesses
.
Step
2
.
Install
the
lower
adapter
connector
,
as
shown
in
Fig
.
4
-
3
.
Step
3
.
Install
the
MicroVersaTrip
phase
sensor
provided
.
Secure
the
sensor
to
the
lower
adapter
with
RTV
or
equivalent
adhesive
.
Install
the
upper
adapter
con
-
nector
(
See
Fig
.
4
-
4
)
.
Fig
.
4
-
3
.
Lower
Adapter
Connector
AK
-
50
,
AKS
-
50
BREAKERS
WITH
SST
TRIP
SYSTEMS
Step
1
.
Replace
the
existing
SST
phase
sensor
with
the
new
MicroVersaTrip
phase
sensor
provided
.
Step
2
.
Install
as
shown
in
Fig
.
4
-
4
.
NOTE
:
Occasionally
,
during
current
sensor
manufacturing
,
a
slight
separation
may
occur
between
the
epoxy
and
plastic
shell
.
This
may
amount
to
as
much
as
0.030
M
and
has
no
effect
on
performance
.
Additionally
,
slight
surface
im
-
perfections
are
part
of
the
epoxy
curing
process
and
have
no
effect
on
performance
.
Fig
.
4
-
4
.
Phase
Sensors
and
Harness
Installed
13
Courtesy of NationalSwitchgear.com

SECTION
4
BACK
FRAME
CONVERSION
AK
-
75
,
AKS
-
100
BREAKERS
WITH
SST
TRIP
SYSTEMS
MicroVersaTrip
phase
sensors
are
visually
identical
to
the
SST
sensor
.
Follow
the
basic
procedure
given
Phase
Sensors
(
Cont
’
d
)
above
and
replace
the
SST
with
MicroVersaTrip
phase
sensor
provided
.
AK
-
75
,
AKS
-
100
BREAKERS
WITH
EC
OR
POWER
SENSOR
TRIP
SYSTEMS
Note
:
Longer
leads
are
to
air
core
connections
.
CTs
without
air
core
are
shown
.
Step
1
.
Remove
the
existing
trip
devices
and
harnesses
.
Step
2
.
The
MicroVersaTrip
®
RMS
-
9
sensors
mount
on
the
upper
breaker
studs
.
The
sensors
are
held
on
the
stud
with
the
locking
rings
,
as
shown
in
Fig
4
-
5
.
Leave
enough
of
the
stud
exposed
for
the
primary
fingers
to
engage
.
Engage
the
sensor
’
s
anti
-
turn
lugs
with
the
notch
in
the
locking
ring
.
Before
tighten
-
ing
the
locking
rings
,
position
each
sensor
so
that
its
leads
will
exit
between
the
pole
bases
,
as
shown
in
Fig
.
4
-
6
.
Step
3
.
Mount
the
three
sensor
terminal
boards
to
the
rear
of
the
back
frame
using
the
hardware
provided
.
Step
4
.
Form
each
sensor
’
s
leads
downward
between
the
pole
bases
.
Fig
.
4
-
5
.
Phase
Sensor
Installation
for
AK
-
75
,
AK
-
100
Breakers
14
Courtesy of NationalSwitchgear.com

SECTION
5
FOUR
-
WIRE
GROUND
FAULT
OPTION
The
MicroVersaTrip
Plus
or
PM
Ground
Fault
op
-
tion
requires
an
additional
neutral
sensor
when
used
on
a
four
-
wire
system
with
the
neutral
grounded
at
the
transformer
.
The
phase
sensors
are
mounted
on
the
breaker
.
However
,
the
neutral
sen
-
sor
is
inserted
in
the
neutral
,
which
is
part
of
the
equipment
.
The
neutral
sensor
is
connected
to
the
breaker
through
the
4
th
-
wire
neutral
disconnect
.
Stationary
Breaker
Conversion
BLACK
M
WHITE
BREAKER
9
4
—
HARNESS
FOURTH
C
/
1
TERMINAL
BOARD
i
MOUNTING
HARDWARE
"
4
TYPES
AK
-
50
,
AKS
-
50
STATIONARY
BREAKERS
The
4
th
wire
disconnect
for
stationery
'
breakers
con
-
sists
of
terminal
board
mounted
to
the
lower
front
channel
as
shown
in
Fig
.
5
-
1
.
Step
1
.
If
the
terminal
board
already
exists
,
just
replace
the
control
harness
.
Maintain
the
following
color
code
:
White
-
Common
,
Black
-
Tap
.
Step
2
.
If
the
terminal
board
assembly
is
being
added
,
mount
as
shown
in
Fig
.
5
-
1
.
The
mounting
holes
may
have
to
be
added
to
the
front
channel
.
See
Fig
.
5
-
1
.
+
-
1.500
-
*
44
I
^
M
7.62
*
DRILL
(
2
)
0.219
DIAMETER
HOLES
I
Ol
TERMINAL
BOARD
ASSEMBLY
J
0
/
/
"
/
/
/
A
y
/
/
7
/
SECTION
M
-
M
Fig
.
5
-
1
.
4
th
Wire
Terminal
Board
Installed
Types
AK
-
50
,
AKS
-
50
Stationary
15
Courtesy of NationalSwitchgear.com

SECTION
5
FOUR
-
WIRE
GROUND
FAULT
OPTION
Draw
Out
Breaker
Conversion
AK
-
50
,
AKS
-
50
DRAW
OUT
The
4
th
-
wire
disconnect
for
AK
-
50
,
AKS
-
50
draw
out
breakers
mounts
to
the
lower
-
back
frame
as
shown
in
Fig
.
5
-
2
.
If
the
disconnect
is
existing
,
just
replace
the
control
harness
.
Maintain
the
following
color
code
:
White
-
common
.
Black
-
tap
.
If
the
disconnect
is
being
added
,
mount
the
discon
-
nect
assembly
as
shown
in
Fig
.
5
-
2
.
AK
-
75
,
AK
-
100
DRAW
OUT
There
are
twro
4
th
-
wire
disconnect
designs
used
with
these
breakers
.
One
design
is
used
on
breakers
for
GE
type
AKD
Switchgear
equipment
.
The
other
de
-
sign
is
used
on
breakers
for
GE
types
AKD
-
5
and
AKD
-
6
equipment
.
The
only
difference
is
the
bracket
used
for
mounting
the
disconnect
to
the
breaker
.
Figures
5
-
3
,
5
-
4
depict
the
two
designs
.
The
Conversion
Kit
contains
an
assembled
,
ready
to
install
,
mounting
block
and
bracket
for
AKD
-
5
or
AKD
-
6
installation
,
plus
a
bracket
only
for
type
AKD
equipment
installations
.
For
type
AKD
equipment
,
remove
the
bracket
from
the
assembled
bracket
and
mounting
block
furnished
with
the
conversion
kit
and
replace
it
with
the
type
.
AKD
bracket
.
The
4
th
-
wire
disconnect
for
the
AK
-
75
,
AK
-
100
draw
out
breakers
mount
to
the
lower
back
frame
as
shown
in
Fig
.
5
-
5
.
1
.
If
the
disconnect
is
existing
,
just
replace
the
control
harness
.
Maintain
the
following
color
code
:
White
-
Common
,
Black
-
Tap
.
2
.
If
the
disconnect
is
being
added
,
mount
the
dis
-
connect
assembly
as
showm
in
Fig
.
5
-
5
.
.
)
Fig
.
5
-
2
.
4
th
Wire
Disconnect
Installed
Types
AK
-
50
,
AKS
-
50
Draw
Out
Breakers
Fig
.
5
-
3
.
4
th
Wire
Disconnect
Type
AKD
-
5
or
AKD
-
6
Fig
.
5
-
4
.
4
th
Wire
Disconnect
Type
AKD
16
Courtesy of NationalSwitchgear.com

SECTION
5
FOUR
-
WIRE
GROUND
FAULT
OPTION
AK
-
75
,
AK
-
100
DRAW
OUT
(
CONT
’
D
)
ROUTE
LEADS
BETWEEN
POLE
BASES
PHASE
SENSOR
i
i
i
I
I
LEFT
POLE
CENTER
POLE
RIGHT
POLE
I
I
MOUNTING
HOUSING
ZIX
»
*
t
TB
3
TB
2
CONTROL
HARNESS
THRU
HOLE
n
L
j
O
I
I
WHITE
COMMON
WHITE
WIRE
BLACK
WIRE
GREEN
+
I
+
TIE
MOUNTING
HOUSING
Ol
P
lO
Oi
MOUNTING
HOUSING
I
WHEN
USED
,
THE
4
TH
-
WIRE
NEUTRAL
SENSOR
DISCONNECT
BLOCK
MOUNTS
ON
TOP
OF
TAP
TERMINAL
BOARD
VIA
ITS
2
LOWER
MOUNTING
SCREWS
.
THE
AKD
-
5
TYPE
MOUNTING
IS
ILLUSTRATED
.
THE
ARRANGEMENT
FOR
AKD
TYPES
IS
IDENTICAL
EXCEPT
FOR
USE
OF
A
DIFFERENT
MOUNTING
BRACKET
.
Fig
.
5
-
5
.
AK
-
75
,
AK
-
100
Back
Frame
Conversion
17
Courtesy of NationalSwitchgear.com

SECTION
5
FOUR
-
WIRE
GROUND
FAULT
OPTION
INSTALLING
NEUTRAL
SENSORS
The neutral
sensor
is
an
electrical
duplicate
of
the
phase
sensor
,
including
the
taps
.
Therefore
,
when
taps
(
if
provided
)
are
changed
on
the
phase
sen
-
sors
,
the
taps
on
the
neutral
sensor
must
be
corre
-
spondingly
positioned
.
For
kits with
fixed
phase
sen
-
sors
,
be
sure
to
use
the
corresponding
tap
on
the
neutral
sensor
.
Mount
the
neutral
sensor
in
the
outgoing
neutral
lead
,
normally
in
the
equipment
’
s
bus
or
cable
com
-
partment
,
see
Fig
.
5
-
6
and
5
-
7
.
Pig
.
5
-
6
.
Outline
of
the
AK
-
75
,
AK
-
100
Neutral
Sensor
18
Courtesy of NationalSwitchgear.com

SECTION
5
FOUR
-
WIRE
GROUND
FAULT
OPTION
LOAD
}
-
*
-
LINE
.
562
DIA
.
HOLES
MAX
.
STRAP
1.25
MAX
.
STRAP
3.33
ref
.
1.25
I
i
>
i
i
V i
1
.
625
m
.
625
•
I
I
1.18
ref
.
TERMINAL
BLOCK
*
-
1.75
-
*
*
-
1.75
.
88
4
.
75
©
©
-
©
I
:
GI
T
I
:
GI
3.75
MAX
.
I
:
GI
1.75
3.25
I
:
GI
*
y
—
V
©
—
(
p
-
I
CGI
11.25
Fig
.
5
-
7
.
Neutral
Sensor
Outline
for
AK
-
50
19
Courtesy of NationalSwitchgear.com

SECTION
6
EQUIPMENT
CONVERSION
Legend
for
Fig
.
6
-
1
through
6
-
5
Breaker
portion
of
4
th
-
wire
disconnect
Equipment
portion
of
4
th
-
wire
disconnect
Mounting
bracket
AK
-
100
for
AKD
type
compartments
10
-
32
x
1.375
-
inch
mounting
screws
Insulation
10
#
lock
washer
10
#
flat
washer
/
s
-
20
flat
washer
/
s
-
20
lock
washer
/
4
-
20
nut
'
/
4
-
20
x
1.25
-
inch
mounting
screws
Bracket
225
226
Installing
Mounting
Brackets
The
equipment
compartment
contains
the
mating
portions
of
the
4
-
wire
disconnect
,
and
the
neutral
sensor
outlined
in
Section
5
,
pages
15
-
18
.
The
same
disconnect
assembly
is
used
for
types
AKD
,
AKD
-
5
and
AKD
-
6
switchgear
.
Mounting
brackets
for
AKD
,
AKD
-
5
and
AKD
-
6
,
and
AKD
-
8
switchgear
applica
-
tions
are
supplied
in
the
conversion
kit
.
See
Figs
.
6
-
1
through
6
-
5
for
mounting
diagrams
.
229
230
231
232
233
i
235
1
236
i
237
238
239
CENTER
LEFT
PHASE
SENSOR
TERMINAL
BOARD
PHASE
SENSOR
TERMINAL
BOARD
POLE
POLE
L
CENTER
LEFT
POLE
POLE
REAR
OF
.
BREAKER
^
I
230
REAR
OF
9
75
—
BRACKETS
i
COMPARTMENT
DRILL
(
2
|
0
261
DIAMETER
HOLES
IN
COMPARTMENT
225
232
i
REAR
OF
BREAKER
-
,
233
AK
75
-
7.00
AK
100
-
9
75
226
5
DRILL
(
2
)
0.224
DIAMETER
£
£
OF
BRACKET
HOLES
IN
COMPARTMENT
m
227
J
i
i
J
,
227
i
:
j
s
-
*
-
044
7
7
0.88
-
H
*
-
0.44
239
234
MD
.
62
COMPARTMENT
BRACKET
—
0.88
12.62
1.38
*
1.84
*
SIDE
VIEW
OF
COMPARTMENT
VIEW
LOOKING
AT
REAR
OF
COMPARTMENT
SIDE
VIEW
OF
COMPARTMENT
VIEW
LOOKING
AT
REAR
OF
COMPARTMENT
DIMENSIONS
IN
INCHES
DIMENSIONS
IN
INCHES
Fig
.
6
-
1
.
AK
-
50
,
AKS
-
50
4
th
Wire
Disconnect
Type
AKD
Fig
.
6
-
2
.
AK
-
75
,
AKS
-
100
4
th
Wire
Disconnect
Type
AKD
-
5
,
AKD
-
6
)
K
20
Courtesy of NationalSwitchgear.com