GE MicroVersaTrip Plus User manual

MicroVersaTrip
®
Plus
and
PM
Conversion
Kits
For
I
-
T
-
E
®
Type
KB
Low
-
Voltage
Power
Circuit
Breakers
INTRODUCTION
GE
Conversion
Kits
arc
designed
to
upgrade existing
I
-
T
-
E
®
Low
Voltage
Power
Circuit
Breakers
,
rather
than
replacing
the
entire
breaker
.
The
Conversion
Kits
contain
enhanced solid
-
state
MicroVersa
Trip
Plus
or
MicroVersaTrip
-
PM
Trip
Units
,
representing
the latest
technological
advancement
in
GE
trip
systems
.
MicroVersaTrip
Plus and
MicroVersaTrip
PM
Conversion
Kits
are
designed
and breaker
tested
to
conform
with
ANSI Stan
-
dard
C
37.59
,
allowing
the
retrofittcr
to
properly
install
and
acceptance
test
the breaker
.
This
publication
covers
installa
-
tion
of
MicroVersaTrip
®
Plus and
PM
Conversion
Kits
on
I
-
T
-
E
®
Type
KB
Low
Voltage
Power
Cir
-
cuit
Breakers
.
Each
Conversion
Kit
contains
all
the
appropriate
material
to
convert
from
an
existing
I
-
T
-
E
®
electromechanical
trip
system
.
Courtesy of NationalSwitchgear.com

TABLE
OF
CONTENTS
GENERAL
INFORMATION
SECTION
1
3
SECTION
2
PRIOR
TO
INSTALLATION
3
SECTION
3
DISASSEMBLING
THE
BREAKER
Front
and
Back
Frame
Separation
.
.
Metal
Breaker
Frames
Slate
Breaker
Frames
Trip
Paddle
Removal
Old
Trip
Unit
Removal
4
-
9
4
-
7
4
-
5
6
-
7
8
9
SECTION
4
INSTALLING
THE
CONVERSION
KIT
Installing
Phase
Sensors
(
CT
’
s
)
Metal
Breaker
Frames
Slate
Breaker
Frames
Front
/
Back
Frame
Reassembly
(
Metal
Breaker
Frames
)
Front
/
Back
Frame
Reassembly
(
Slate
Breaker
Frames
)
.
Flux
Shifter
/
Programmer
Bracket
Installation
Metal
Breaker
Frames
Slate
Breaker
Frames
Programmer
Wiring
Harness
Communications
Harness
Programmable
Trip
Unit
10
-
23
10
-
12
10
11
-
12
13
14
-
15
16
-
20
16
-
17
18
-
20
21
22
23
SECTION
5
FOUR
-
WIRE
GROUND
FAULT
OPTION
24
TESTING
AND
TROUBLESHOOTING
Cabling
Diagram
25
-
27
SECTION
6
27
2
Courtesy of NationalSwitchgear.com

SECTION
1
GENERAL
INFORMATION
Whenever
the
ground
fault
trip
element
is
fur
-
nished
for
breakers
applied
on
4
-
wire
systems
,
note
that
,
an
associated
neutral
sensor
(
CT
)
is
re
-
quired
for
separate
mounting
in
the
equipment
.
Make
sure
that
retrofitted
breakers
are
applied
within
their
short
circuit
ratings
.
For
example
,
when
the
breaker
’
s
trip
elements
are
to
be
changed
from
long
-
time
instantaneous
to
long
-
time
,
short
-
time
,
the
short
-
time
rating
would
gov
-
ern
the
application
.
As
a
service
-
related
consideration
,
the
installation
of
the
MicroVersaTrip
®
Plus
or
PM
kit
provides
an
excellent
opportunity
to
perform
normal
mainte
-
nance
on
the
breaker
,
particularly
while
the
front
and
back
frames
are
separated
.
Such
procedures
are
described
in
installation
and
maintenance
manuals
normally
supplied
with
breakers
and
equipment
.
Conversion
kit
installation
is
straightforward
.
However
,
careful
workmanship
and
attention
to
these
instructions
should
be
maintained
.
Famil
-
iarity
with
the
breaker
will
prove
helpful
.
The
general
approach
is
to
first
strip
the
breaker
of
its
existing
trip
devices
and
then
install
the
program
-
mable
trip
unit
MicroVersaTrip
®
Plus
or
PM
components
.
Following
this
,
the
converted
breaker
is
performance
-
tested
prior
to
being
restored
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
accessory
'
combinations
which
necessitate
minor
modification
and
or
relocation
of
a
component
(
s
)
.
In
most
instances
,
this
supple
-
mentary
work
can
be
done
on
site
.
Preparatory
to
the
conversion
,
the
installer
should
verify
that
the
correct
kit
,
current
sensors
and
programmable
trip
unit
have
been
furnished
.
SECTION
2
-
PRIOR
TO
INSTALLATION
•
Turn
off
and
lock
out
the
power
source
feed
-
ing
the
breaker
prior
to
attempting
any
installation
,
maintenance
,
or
modification
.
Follow
7
all
lockout
and
tagging
rules
of
the
National
Electrical
Code
and
all
other
appli
-
cable
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
movement
of
the
breaker
while
it
is
on
the
draw
out
extension
rails
.
•
Do
not
leave
the
breaker
in
an
intermediate
position
in
the
switchgear
compartment
.
Al
-
ways
leave
it
in
the
CONNECTED
,
TEST
,
or
DISCONNECTED
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
7
Voltage
Power
Circuit
Break
-
ers
utilize
high
speed
,
stored
energy
7
spring
operating
mechanisms
.
The
breakers
and
their
enclosures
contain
interlocks
and
safety
features
intended
to
provide
safe
,
proper
op
-
erating
sequences
.
For
maximum
personnel
protection
associated
with
installation
,
opera
-
tion
,
and
maintenance
of
these
breakers
the
following
procedures
must
be
followed
.
Fail
-
ure
to
follow
7
these
procedures
may
result
in
personal
injury
7
or
property
damage
.
•
Only
qualified
persons
,
as
defined
in
the
Na
-
tional
Electrical
Code
,
who
are
familiar
with
the
installation
and
maintenance
of
low
7
volt
-
age
power
circuit
breakers
,
and
switchgear
as
-
semblies
,
should
perform
any
work
associated
with
these
breakers
.
•
Completely
read
and
understand
all
instructions
before
attempting
any
breaker
installation
,
operation
,
maintenance
,
or
modification
.
3
Courtesy of NationalSwitchgear.com

SECTION
3
DISASSEMBLING
THE
BREAKER
RETAINING
STUDS
The
steps
followed
when
converting
a
KB
breaker
are
dependent
on
whether
it
has
a
metal
frame
or
a
slate
frame
.
The
following
sections
include
in
-
structions
for
both
types
.
Before
beginning
the
conversion
,
remove
the
breaker
to
a
clear
,
well
-
lighted
work
bench
.
Make
sure
the
breaker
is
in
the
OPEN
Position
.
SHUNT
SCREW
Front
and
Back
Frame
Separation
METAL
BREAKER
FRAMES
Step
1
.
Remove
the
three
arc
chutes
by
first
removing
the
screw
that
fastens
each
shunt
to
the
contact
arm
,
(
Fig
.
1
)
.
Unscrew
the
(
2
)
retaining
studs
on
the
sides
of
each
arm
chute
and
pull
them
forward
and
up
.
Save
all
the
hardware
.
Step
2
.
Disconnect
the
draw
out
interlock
on
the
right
side
of
the
breaker
.
Remove
the
hairpin
clip
on
the
inside
of
the
pin
and
pull
the
pin
out
.
Save
the
pin
and
clip
(
Fig
.
2
)
Step
3
.
Remove
the
two
outside
pole
line
terminal
hous
-
ings
.
Remove
and
save
the
(
4
)
philip
’
s
head
screws
holding
each
unit
.
(
Fig
3
)
The
housings
can
be
removed
by
pulling
them
up
and
out
.
Some
breakers
may
require
that
the
contact
arm
be
pried
all
the
way
open
using
a
large
screwdriver
.
Step
4
.
Remove
and
save
(
4
)
philip
’
s
head
screws
holding
each
trip
unit
housing
in
the
back
frame
.
(
Fig
.
3
)
.
The
trip
unit
housing
will
be
removed
after
the
frames
are
separated
.
Fig
.
1
.
Arc
Chute
Removal
r
.
Fig
.
2
.
Draw
Out
Interlock
CONTACT
HOUSING
Ml
'
I
a
«
s
;
•
•
»
CONTACT
,
HOUSING
,
SCREWS
a
S
i
X
%
I
I
I
£
£
<
i
>
INSUIATED
HOUSING
SCREWS
©
e
G
.
<
£
v
_
;
.
*
Fig
.
3
.
Insulated
Housing
Removal
4
Courtesy of NationalSwitchgear.com

SECTION
3
DISASSEMBLING
THE
BREAKER
Front
and
Back
Frame
Separation
(
Cont
’
d
)
METAL
BREAKER
FRAMES
FRAME
Step
5
.
Remove
and
save
the
(
2
)
*
/
8
-
16
nuts
at
the
top
side
of
the breaker
,
holding
the
front
and back
frames
together
.
The
nuts
can
only
be accessed with the
contact
housings
removed
,
using
a
V
\
6
open
end
wrench
.
(
Fig
.
4
)
Step
6
.
Remove
and
save
the
(
2
)
%
-
16
nuts
at
the
bottom
side
of
the breaker
,
holding
the
front
and back
frames
together
(
Fig
.
5
)
.
Use
a
long
extension
and
a
socket
wrench
.
The
frames
should
now
be
gently
separated
,
being
careful
not to
damage
the
trip
unit
housings
.
Step
7
.
Remove
the
trip
unit
assemblies
from
the
front
frame
.
Remove
and discard the
(
2
)
philip
'
s
head
screws
fastening
each
contact
arm
to
the electro
-
mechanical
trip
units
.
(
Fig
.
6
)
BOLT
Fig
.
4
.
Top
Frame Bolt Removal
Fig
.
5
.
Bottom Frame Bolt Removal
CONTACT
AND
SCREWS
TRIP
PADDLE
TRIP
PADDLE
?
SCREWS
Fig
.
6
.
Bottom
Frame
Bolt
Removal
5
Courtesy of NationalSwitchgear.com

SECTION
3
DISASSEMBLING
THE
BREAKER
Front
and
Back
Frame
Separation
SLATE
BREAKER
FRAMES
SHUNT
SCREW
Step
1
.
Remove
the
three
arc
chutes
by
first
removing
the
5
/
i
6
-
18
slotted
screws
that
fasten
each shunt
to
the
contact
arm
.
(
Fig
.
7
)
Pull
the
arc
chutes
for
-
ward and
up
.
Save
hardware
to
reuse
when reassembled
.
Step
2
.
If
the draw
out
circuit breaker
is
equipped
with
an
interlock
device
,
disconnect
the
draw
out
in
-
terlock
linkage
on
the
right
side
of
the
breaker
(
Fig
.
8
)
.
Discard
the
trip
bar
link
shown
in
(
Fig
.
9
)
.
Save
the
rest
of
the
linkage
to
be
reused
.
Fig
.
7
.
Arc
Chute
Removal
Fig
.
8
.
Draw
Out
Interlock
Linkage
Fig
.
9
.
Trip
Bar
Link
6
Courtesy of NationalSwitchgear.com

SECTION
3
DISASSEMBLING
THE
BREAKER
I
Front
and
Back
Frame
Separation
(
Cont
’
d
)
I I
V
<
S
>
®
SLATE
BREAKER
FRAMES
e
H
Step
3
.
Remove
the
load
terminal
bracket
on
the
back
side
of
the
breaker
.
(
Fig
.
10
)
.
Remove
and
dis
-
card
the
(
3
)
slotted
screws
that
hold
it
in
place
.
Step
4
.
Remove
the
(
2
)
5
/
16
-
18
x
2
"
slotted
screws
above
each
load
terminal
and
discard
them
.
(
Fig
.
10
)
Step
5
.
Remove
the
1
/
4
-
20
x
1
3
/
4
”
and
10
-
32
x
1
3
/
4
”
slotted
screws
below
each
load
terminal
and
dis
-
card
them
.
(
Fig
.
10
)
Step
6
.
Remove
and
save
the
(
6
)
3
/
8
-
16
x
11
/
2
"
bolts
that
hold
the
front
and
back
frame
together
(
Fig
.
5
)
.
Carefully
separate
the
frames
.
The
electromechanical
trip
units
will
be
fastened
to
the
front
frame
.
Step
7
.
With
the
front
frame
rolled
over
on
the
top
side
,
the
(
2
)
3
/
8
-
16
x
1
1
/
4
”
slotted
screws
in
each
trip
unit
can
be
removed
.
The
screws
hold
the
trip
units
to
the
contact
arm
.
(
Fig
.
12
)
t
.
:
$
i
3
f
.
i
Vie
-
18
SCREWS
$
9
e
^
0
&
*
LOAD
TERMINAL
BRACKET
wy
2
•
m
.
XT
14
-
20
SCREWS
r
*
10
-
32
SCREWS
Fig
.
10
.
Trip
Unit
Screw
Removal
FRAME
BOLTS
CONTACT
ARM
SCREWS
Fig
.
12
.
Trip
Unit
Removal
7
Courtesy of NationalSwitchgear.com

SECTION
3
DISASSEMBLING
THE
BREAKER
Trip
Paddle
Removal
METAL
BREAKER
FRAMES
Step
1
.
Remove
the
(
2
)
screws
holding
each
trip
paddle
to
the
common
trip
bar
(
Fig
.
6
page
5
)
.
Step
2
.
Return
the
(
2
)
screws
on
the
left
end
of
the
trip
bar
that
hold
the
trip
bar
rotation
adjustment
plate
(
Fig
.
13
)
.
ADJUSTMENT
PI
ATE
Fig
.
13
.
Trip
Paddle
Removal
•
:
:
J
V
.
8
Courtesy of NationalSwitchgear.com

SECTION
3
DISASSEMBLING
THE
BREAKER
LOAD
TERMINAL
BRACKET
SCREWS
Removal
of
the
Old
Trip
Units
METAL
BREAKER
FRAMES
Step
1
.
Remove
and
discard
the
(
2
)
load
terminal
bracket
screws
from
the
back
of
each
trip
unit
housing
.
(
Fig
14
)
Step
2
.
Remove
and
discard
the
(
2
or
4
)
trip
unit
screws
from
the
back
of
each
trip
unit
housing
.
(
Fig
.
14
)
Step
3
.
Remove
and
discard
the
(
2
)
load
terminal
screws
on
the
top
of
each
trip
unit
(
Fig
.
15
)
.
Discard
the
electromechanical
trip
units
.
Step
4
.
Separate
the
load
terminal
bracket
from
the
old
load
terminal
(
Fig
.
16
)
.
Discard
the
load
termi
-
nal
and
the
hardware
,
but
save
the
bracket
.
TRIP
UNIT
SCREWS
Fig
.
14
.
Trip
Unit
Disassembly
(
Back
)
1
,
TOP
BUS
SCREWS
rrm
Fig
.
15
.
Trip
Unit
Disassembly
(
Top
)
LOAD
TERMINAL
BRACKET
Fig
.
16
.
Load
Terminal
and
Bracket
9
Courtesy of NationalSwitchgear.com

SECTION
4
INSTALLING
THE
CONVERSION
KIT
%
-
l
6
X
1
"
BOLT
NEW
LOAD
TERMINAL
Installing
Phase
Sensors
(
CT
’
s
)
METAL
BREAKER
FRAMES
h
.
1
'
-
Step
1
.
Mount
the
new
copper
load
terminal
provided
in
the
insulated
housing
.
Use
the
bracket
removed
in
step
4
on
page
9
(
Fig
.
17
)
.
The
bracket
is
in
-
stalled
on
the
bottom
side
of
the
load
terminal
.
Use
the
(
2
)
V
\
-
20
x
VA
"
screws
with
plain
and
lock
washers
,
and
the
Vs
-
lb
x
T
'
bolt
with
a
plain
and
lock
washer
for
each
phase
.
Step
2
.
Assemble
the
”
S
”
shaped
steel
bracket
on
the
front
of
each
housing
placing
a
fiber
barrier
be
-
tween
the
bracket
and
the
new
load
terminal
(
Fig
.
19
)
.
Insert
the
(
2
)
!
4
-
20
x
VA
"
and
lock
washers
provided
,
through
the
holes
above
each
load
terminal
(
Fig
.
18
)
.
Step
3
.
Place
a
spacer
,
phase
sensor
(
CT
)
,
insulated
bar
-
rier
and
top
copper
bus
over
each
CT
post
as
shown
in
sequence
(
Fig
.
19
)
from
left
to
right
.
The
top
copper
bus
is
held
in
place
using
a
%
-
16
x
1
14
bolt
with
a
plain
and
lock
washer
pro
-
vided
.
Also
,
insert
the
(
2
)
14
-
20
x
%
”
screws
with
plain
and
lock
washers
provided
threaded
into
the
"
S
"
bracket
.
'
/
.
-
20
X
1
W
'
SCREWS
E
•
Fig
.
17
.
Load
Terminal
Installation
with
plain
screws
14
-
20
X
1
VH
"
SCREWS
Fig
.
18
.
“
S
”
Bracket
Installation
'
4
-
20
X
VA
''
SCREWS
INSULATED
BARRIER
“
S
”
BRACKET
'
)
\
\
TOP
COPPER
»
BUS
'
FIBER
BARRIER
%
-
l
6
X
VA
"
BOLT
SPACER
Fig
.
19
.
CT
Assembly
10
Courtesy of NationalSwitchgear.com