GE MicroVersaTrip User manual
INTRODUCTION
TRIPPING
FUNCTIONS
Micro
-
VersaTrip
®
is
the
second
generation
of
solid
stale
programmers
.
A
compact
unit
,
it
offers
increased
flexibility
,
more
functions
than
VersaTrip
®
or
Selectrip
®
.
The
Micro
-
VersaTrip
®
programmers
,
current
transformers
and
flux
shifters
are
not
compatible
with
the
VersaTrip
or
Selectrip
programmers
,
current
transformers
and
flux
shifters
.
Interchangeable
trip
Micro
-
VersaTrip
®
programmers
are
available
in
both
a
four
-
function
and
a
nine
-
function
version
.
General
Description
1
.
Current
Setting
-
Standard
2
.
Long
-
Time
Pickup
-
Optional
(
Cat
.
No
.
Suffix
“
L
”
)
3
.
Long
-
Time
Delay
-
Standard
(
Optional
on
4
-
Functic
Version
)
4
.
Long
-
Time
Pickup
Light
-
Standard
5
.
Short
-
Time
Pickup
-
Optional
(
Cat
.
No
.
Suffixes
“
N
or
“
S
”
)
6
.
Adjustable
Short
-
Time
Delay
-
Optional
(
Cat
N
<
Suffix
“
S
”
)
7
.
Fixed
Short
-
Time
Ft
Delay
-
Optional
(
Cat
.
No
.
Suf
ix
“
N
”
)
8
.
Short
-
Time
Ft
Switch
-
Optional
(
Cat
.
No
.
Suffi
“
L
”
)
9
.
Instantaneous
Pickup
-
Standard
10
.
Fixed
Instantaneous
Override
-
Optional
(
Cat
.
N
<
Suffixes
“
N
”
or
“
D
”
)
11
.
Ground
Fault
Pickup
-
Optional
(
Cat
.
No
.
Suffixe
“
G
”
or
“
GR
”
)
12
.
Ground
Fault
Delay
-
Optional
(
Cat
.
No
.
Suffixe
“
G
”
or
“
GR
”
)
13
.
Adjustable
High
Range
Instantaneous
-
Option
*
(
Cat
No
.
Suffix
“
H
”
)
14
.
Fault
Trip
Annunciators
-
Optional
(
Cat
.
No
.
Su
fixes
“
A
”
,
“
A
1
”
,
“
A
2
”
and
“
A
3
"
)
15
.
Zone
Selective
Interlock
-
Optional
(
Cat
.
No
.
Su
fixes
“
Z
”
,
“
Z
1
”
,
and
“
Z
2
”
.
The
quantity
of
th
above
functions
in
any
given
breaker
is
determine
by
complete
catalog
number
.
These
programmers
can
be
installed
,
with
few
limitations
,
in
circuit
breakers
with
the
following
frame
designations
.
“
J
”
Molded
Case
Circuit
Breaker
THJ
9
V
,
THJ
9
VV
“
K
”
Molded
Case
Circuit
Breakers
THK
9
V
,
THK
9
VV
PowerBreak
Circuit
Breakers
AK
Circuit
Breakers
TPVV
,
THPVV
AKR
30
,
AKR
50
,
AKRT
50
,
AKR
75
,
AKR
100
Programmers
with
remote
target
indicator
are
not
inter
-
changeable
between
circuit
breaker
frames
.
Programmer
Rejection
System
The
programmer
and
breaker
frames
have
a
rejection
system
which
prevents
programmers
with
the
HI
instan
-
taneous
function
from
being
used
on
standard
breaker
frames
.
Programmers
with
the
suffix
“
M
”
(
no
instan
-
taneous
function
)
are
compatible
with
AK
breakers
only
and
not
on
the
Molded
Case
or
Power
Break
lines
of
breakers
.
In
addition
,
programmers
for
breakers
rated
at
2000
amperes
and
lower
are
not
interchangeable
with
breakers
rated
at
2500
amperes
and
above
.
DETAILED
DESCRIPTION
1
.
Current
Setting
Current
Setting
,
C
,
is
the
value
of
current
th
<
breaker
will
carry
indefinitely
without
tripping
.
This
value
of
current
is
related
to
the
nomina
nameplate
sensor
ampere
rating
,
X
,
or
the
senso
tap
rating
of
the
breaker
in
terms
of
per
cent
.
The
range
of
values
is
:
50
-
60
-
70
-
80
-
85
-
90
-
95
-
100
%
.
2
.
Long
-
Time
Pickup
The
primary
function
of
the
long
-
time
pickup
is
t
<
allow
more
precise
matching
of
the
current
set
ting
and
the
breaker
load
requirements
.
Th
<
long
-
time
pick
up
setting
may
be
changed
fron
80
%
to
110
%
of
the
current
setting
in
four
equa
steps
of
10
%
each
.
As
the
long
-
time
pickup
is
decreased
from
110
°
/
to
80
%
of
the
current
setting
,
the
long
-
tim
<
delay
band
selected
is
extended
to
lower
cur
rents
and
longer
times
.
The
other
functions
arr
not
affected
.
3
.
Long
-
Time
Delay
Trip
Bands
Long
-
Time
delay
trip
bands
provide
the
functior
of
withstanding
temporary
overloads
such
a
:
motor
starting
,
welding
or
other
overcurrent
con
ditions
without
interrupting
service
.
The
purpose
of
the
time
delay
bands
is
to
provid
'
further
degrees
of
coordination
and
selective
within
a
system
.
The
delay
bands
provide
in
creasing
times
to
trip
at
any
fixed
overload
cur
rent
in
ratios
of
2
:
1
for
adjacent
bands
.
The
bands
are
marked
as
follows
:
Courtesy of NationalSwitchgear.com
11
.
Ground
Fault
Pickup
Settings
are
adjustable
with
no
setting
ex
-
ceeding
1200
amperes
to
comply
with
National
Electrical
Code
,
Section
230
-
95
.
These
settings
are
the
following
multiples
of
Sensor
Ampere
Rating
,
X
;
150
-
2000
A
-
.
2
x
,
,
25
x
,
,
3
x
,
.
35
x
,
.
4
x
,
,
45
x
,
,
5
x
,
.
6
x
2500
&
3000
A
-
.
2
x
,
.
22
x
,
,
24
x
,
,
26
x
,
,
28
x
,
,
3
x
,
,
34
x
,
.
37
x
4000
A
-
,
2
x
,
,
22
x
,
,
24
x
,
.
26
x
,
,
28
x
,
.
3
x
12
.
Ground
Fault
Delay
The
time
delay
setting
for
ground
fault
interrup
-
tion
provides
tripping
selectivity
for
main
and
feeder
breakers
.
The
time
delay
follows
l
2
t
slope
and
then
terminates
in
three
fixed
time
delay
bands
as
follows
:
Minimum
Delay
Intermediate
Delay
Maximum
Delay
13
.
Adjustable
High
Range
Instantaneous
The
high
range
instantaneous
provides
protec
-
tion
and
coordination
at
levels
up
to
the
full
short
-
time
rating
of
the
circuit
breaker
.
The
high
range
instantaneous
is
adjustable
from
40
to
100
%
of
the
short
-
time
rating
in
four
steps
of
20
%
each
.
14
.
Fault
Trip
Annunciators
The
primary
function
of
the
mechanical
pop
-
out
type
fault
indicators
is
to
identify
the
type
of
overcurrent
fault
(
overload
,
short
circuit
or
ground
fault
)
responsible
for
tripping
the
breaker
.
Remote
fault
indication
is
available
in
the
form
of
one
N
.
O
.
contact
per
indicator
.
15
.
Zone
Selective
Interlock
The
Zone
Selective
Interlock
system
allows
the
breaker
sensing
the
fault
to
trip
immediately
.
It
also
sends
out
a
signal
which
inhibits
tripping
to
“
upstream
”
breakers
.
If
the
fault
is
not
cleared
by
the
“
downstream
”
breaker
,
then
the
“
upstream
”
breakers
respond
to
the
fault
by
timed
tripping
according
to
the
settings
of
the
time
delay
bands
.
Continuous
Current
Ratings
150
-
4000
Ampere
Typical
Time
Delay
at
600
%
of
Device
Setting
Band
1
Band
2
Band
3
Band
4
3
Seconds
6
Seconds
12
Seconds
25
Seconds
4
.
Long
-
Time
Pickup
Light
Whenever
the
current
reaches
or
exceeds
the
long
time
pickup
point
set
on
the
breaker
a
light
emiting
diode
(
LED
)
is
illuminated
and
remains
so
for
the
duration
of
the
overload
period
.
This
is
available
in
local
only
or
local
and
remote
modes
.
5
.
Short
-
Time
Pickup
The
primary
function
of
the
short
-
time
pickup
is
to
allow
the
breaker
to
carry
high
level
overload
currents
for
a
short
period
of
time
.
This
feature
again
is
to
provide
further
degrees
of
selectivity
within
a
system
.
Short
-
time
trip
settings
are
the
following
multiples
of
the
Current
Setting
:
(
Item
1
)
,
C
;
150
-
4000
A
-
1.5
C
,
2
C
,
2.5
C
,
3
C
,
4
C
,
5
C
,
7
C
,
9
C
.
6
.
Adjustable
Short
-
Time
Delay
The
adjustable
short
-
time
delay
provides
a
fur
-
ther
refinement
of
coordination
between
and
“
downstream
breakers
which
have
the
same
short
-
time
trip
settings
.
Three
steps
of
selectivity
are
provided
:
Minimum
Delay
Intermediate
Delay
Maximum
Delay
7
.
Fixed
Short
-
Time
l
2
t
Delay
The
short
-
time
delay
is
determined
by
the
l
2
t
characteristic
and
is
non
-
adjustable
.
The
time
delays
get
shorter
with
increasing
overload
.
8
.
Short
-
Time
l
2
t
Switch
This
switch
allows
the
selection
of
the
l
2
t
slope
short
-
time
delay
characteristic
or
the
constant
short
-
time
delay
bands
.
9
.
Instantaneous
Pickup
The
instantaneous
setting
provides
immediate
(
no
intentional
time
delay
)
interruption
of
severe
overloads
,
thereby
minimizing
damage
to
the
system
equipment
.
The
trip
point
is
ad
-
justable
and
expressed
in
multiples
of
Sensor
Ampere
Rating
:
X
;
150
-
2500
A
-
1.5
x
,
2
x
,
2
,
5
x
,
3
x
,
4
x
,
6
x
,
8
x
,
10
x
,
3000
&
4000
A
-
1.5
x
,
2
x
,
2.5
x
,
3
x
,
4
x
,
5
x
,
7
x
,
9
x
10
.
Fixed
Instantaneous
Override
A
fixed
instantaneous
trip
is
provided
on
circuit
breakers
ordered
with
short
-
time
delay
and
no
adjustable
instantaneous
trip
.
These
settings
are
the
following
multiples
of
Sensor
Ampere
Rating
,
X
;
150
-
2000
A
-
15
x
2500
&
3000
A
-
13
x
4000
A
-
9
x
.
13
Seconds
.
26
Seconds
.
42
Seconds
(
i
»»
J
i
upstream
circuit
.
13
Seconds
.
26
Seconds
.
42
Mounting
Neutral
Current
Transformer
(
Required
on
a
4
-
wire
system
if
the
programmer
has
the
ground
fault
detection
option
)
.
If
the
load
circuit
does
not
include
a
neutral
(
for
ex
-
ample
:
3
phase
,
3
wire
)
the
neutral
CT
terminals
on
the
circuit
breaker
should
be
left
open
and
neutral
CT
not
used
.
(
Do
NOT
“
short
”
terminals
)
When
a
neutral
is
included
in
the
load
circuit
,
neutral
CT
markings
of
line
and
load
must
be
respected
when
making
bus
or
cable
connections
.
The
polarity
of
connecting
wires
from
secondary
of
neutral
CT
to
circuit
breaker
must
also
be
respected
:
white
to
white
,
black
to
black
.
The
neutral
CT
can
only
be
used
with
static
breaker
of
same
ampere
rating
.
Courtesy of NationalSwitchgear.com
Ground
Return
“
GR
”
Suffix
MicroVersaTrip
Circuit
Breakers
3
MW
SOURCE
S
<
Xi
*
Cl
#
1
SOURCE
#
2
NO
-
1
MAM
HI
Ilf
Tli
*
*
»
Ml
2
L
1
121
m
<
O
9
kl
~
1
w
ft
'
*
NfVTRA
*
LOAD
CCMN
w
•
l
M
t
W
S
-
s
ft
w
t
?
7
r
s
J
2
-
I
LOAD
W
[
*
J
52
-
2
ICUTlAl
LOAD
CONN
.
NSUTRAl
LOAD
CONN
NEUTRAL
LOAD
CONN
.
OJ
.
O
.
E
SM
»
-
l
0
*
0
BUS
52
!
-
j
-
52
-
1
|
T
»
52
-
2
52
-
=
-
SE
«
VlC
*
0
*
0
0
*
0
{
*
Hi
h
•
w
•
W
w
t
w
»
=
II
-
m
12
!
FIG
.
1
—
Double
-
Ended
Switchboard
with
MicroVesaTrip
Ground
Fault
Protection
—
Mains
and
Tie
Tripped
for
GFP
FIG
.
2
—
Double
-
Ended
Switchboard
with
MicroVersaTrip
Ground
Fault
Protection
—
Mains
Only
Tripped
for
GFP
WIRING
Mains
&
He
Tripped
Mains
Only
Tripped
Condition
by
by
Connect
wiring
from
sensor
to
breaker
black
to
black
and
white
to
white
using
twisted
pair
#
14
AWG
minimum
,
Belden
8640
,
61
or
8470
,
71
or
equal
.
Ground
Fault
Protection
GFP
Schemes
There
are
two
GFP
schemes
that
can
be
used
with
3
-
phase
4
-
wire
double
-
ended
equipment
.
In
the
first
method
,
shown
in
Fig
.
1
,
the
two
main
breakers
and
the
tie
breaker
are
provided
with
MicroVersaTrip
-
GR
ground
fault
protection
.
In
the
second
method
,
shown
in
Fig
.
2
,
the
main
breakers
only
are
provided
with
MicroVersaTrip
-
GR
ground
fault
protection
,
and
the
tie
breaker
is
not
tripped
for
GFP
.
The
most
selective
tripping
is
provided
when
all
three
breakers
are
equipped
with
GFP
(
Fig
.
1
)
.
See
com
-
parison
of
the
two
schemes
in
the
table
below
.
The
two
MicroVersaTrip
GFP
schemes
described
here
are
applicable
to
3
-
phase
4
-
wire
double
-
ended
equip
-
ment
where
the
system
will
not
be
operated
with
all
three
breakers
closed
.
MicroVersaTrip
GFP
MicroVersaTrip
GFP
Mains
closed
,
tie
open
Main
that
supplies
the
faulted
bus
will
open
,
other
main
stays
closed
.
Main
that
supplies
the
faulted
bus
will
open
,
other
main
stays
closed
.
If
ground
fault
is
on
load
side
of
tie
,
the
tie
will
open
and
main
stays
closed
.
If
ground
fault
is
on
line
side
of
tie
,
both
main
and
tie
will
open
.
One
main
and
tie
closed
,
other
main
open
Main
that
supplies
both
buses
will
open
for
a
ground
fault
on
either
bus
.
Neutral
Load
Current
In
a
double
-
ended
switchboard
,
when
one
main
is
oper
and
the
tie
is
closed
,
neutral
load
current
can
flov
through
the
two
neutral
sensors
.
The
sensor
circuitry
shown
in
Fig
.
1
&
Fig
.
2
is
arranged
to
prevent
th
<
neutral
load
current
from
actuating
the
ground
fault
trip
units
.
GFP
Settings
When
mains
and
tie
have
MicroVersaTrip
-
GR
grounc
fault
protection
,
set
tie
breaker
delay
time
at
MINIMUN
*
(
0.2
sec
.
)
.
Set
main
breaker
delay
time
at
IN
TERMEDIATE
(
0.3
sec
.
)
,
in
order
to
obtain
selectivity
between
the
mains
and
tie
.
When
mains
only
have
MicroVesaTrip
-
GR
ground
fauf
protection
,
set
delay
time
at
MINIMUM
(
0.2
sec
.
)
,
unlest
longer
time
is
needed
in
order
to
coordinate
with
othei
ground
fault
relays
in
downstream
devices
.
Current
pickup
settings
(
trip
point
)
should
be
determin
ed
by
a
system
study
,
but
in
the
absence
of
other
infor
mation
,
set
trip
point
at
0.4
X
on
each
breaker
(
1100
A
foi
3000
A
and
4000
A
frame
sizes
)
.
MicroVersaTrip
GFP
utilizes
internal
tripping
power
derived
from
the
flow
of
phase
current
through
the
phase
sensors
.
To
develop
this
tripping
power
,
a
minimum
of
10
%
of
rated
sensor
current
must
be
car
-
ried
by
the
breaker
.
Under
balanced
load
conditions
in
a
double
-
ended
arrangement
with
mains
and
tie
closed
,
a
tie
breaker
might
not
carry
enough
current
to
develop
tripping
power
for
ground
fault
tripping
of
the
tie
.
When
double
-
ended
equipment
is
subject
to
operating
with
all
three
breakers
closed
,
reliable
GFP
can
be
ot
>
tained
by
using
a
Ground
-
Break
relay
to
trip
the
tie
,
in
combination
with
MicroVersaTrip
-
GR
mains
.
The
tie
can
be
either
a
standard
breaker
or
a
MicroVersaTrip
with
a
shunt
trip
accessory
.
©
1983
GENERAL
ELECTRIC
COMPANY
For
further
information
call
or
write
your
local
General
Electric
Sales
Office
or
...
General
Electric
Distribution
Equipment
41
Woodford
Avenue
Plainville
,
CT
06062
These
instructions
do
not
purport
to
cover
all
details
or
variations
in
equipment
nor
to
provide
for
every
possible
contingency
to
be
met
in
connection
with
installation
operation
or
maintenance
.
Should
further
information
be
desired
or
should
partic
-
ular
problems
anse
which
are
not
covered
sufficiently
for
the
purchaser
'
s
pur
-
poses
,
the
matter
should
be
referred
to
the
General
Electric
Company
.
ELECTRIC
GENERAL
GEH
-
4657
7
/
83
Courtesy of NationalSwitchgear.com
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