GE IFC53M Instructions Manual
INSTRUCTIONS
Supplement
GEK-65572
GEK-45375
to
OVERCURRENT
TIME
TYPE
RELAY
IFC53M
GENERAL
‘1’
ELECTRIC
GEK-65572
These
form
instructions
These
taneous
right—hand
unit.
The
dropout
a
with
calibrated
The
The
coil
The
of
tion
support
instructions
relays
overcurrent
target
special
values
special
in
high
ratings
high
high
the
structure.
for
provide
and
high
of
80
wave
standard
the
dropout
available
dropout
or
are
the
unit.
seal-in
dropout
percent,
washer
instantaneous
instantaneous
range
low
a
Type
for
The
so
manner
are
supplement
IFC53M
target
a
IEC53M
Type
and
unit
instantaneous
higher,
or
it
that
once
HI-SEISMIC
unit
in
shown
unit
is
accomplished
relay.
seal-in
a
can
the
TIME
to
relay
high
of
be
pole
HIGH
contacts
Table
is
OVERCURRENT
IFCS3M
TYPE
I
NTRODUCT
instruction
for
unit
is
similar
dropout
is
unit
pickup
constructed
current.
rotated
piece
DROPOUT
will
1.
by
for
means
tapped
RELAY
ION
book
GEK-45375.
the
both
the
to
instantaneous
without
The
has
the
been
most
adjusted
to
INSTANTANEOUS
amperes
30
close
operation
range
of
a
overcurrent
time
Type
unit
pole
favorable
either
on
selection
The
IFC53A
mounted
a
piece
for
UNIT
at
combination
target
is
position.
80
voltages
two
of
link
element
the
with
in
the
is
and
constructed
percent
less
ranges
located
of
addition
rear
designed
The
dropout
and
unit
than
(H
on
the
and
of
or
the
two
the
the
secured
may
or
250
L).
top
instan
of
to
higher.
volts.
books
a
relay
yield
be
Selec
of
the
*The
one
higher
the
ever;
farther
the
but
range
drnpere
range,
correct
These
possible
information
ourchaser’s
the
Tc
no
such
approximate
is
overlap
since
position
2nstructloflq
contingency
purposes,
extent
assurance
Unit
2-8
4-16
10-40
20-80
between
has
it
for
desired
be
requirod
is
the
do
given
which
the
the
not
to
the
Tap
Position
means
maximum
higher
range
purport
be
or
matter
the
with
L
H
L
H
L
H
L
H
in
met
should
products
that
setting
L
continuous
which
to
connection
in
particular
should
respect
*Range
2-4
4-8
4-8
8-16
10-20
20-40
20-40
40-80
the
it
cover
be
described
to
TABLE
2—4,
and
rating.
is
all
referred
local
1
Continuous
Rating
(Pjnps)
16.2
12.6
20.0
4-C
the
operate.
to
details
with
problems
herein
codes
1.9
3.0
4.3
6.9
9.0
be
may
minimum
Make
installation,
the
to
meet
and
or
arise
**One
2-5,
setting.
H
sure
variations
General
applicable
ordinances
Rating
(mps)
140
275
275
4-8.
that
which
Second
70
operation
Electric
There
the
in
are
SI,
because
K
4900
19600
75500
75500
will
Whenever
range
equipment
or
not
covered
Company.
IEEE
they
always
possible
selection
nor
maintenance.
and
vary
be
link
provide
to
sufficiently
NEiL21
standards;
greatly.
at
select
Should
least
is
the
in
for
for
3
GEK—55572
**Higher
The
to
45375
The
target,
the
of
The
pickup,
the
to
ing
retightened.
attached
thereby
obtain
tlng.
attached
is
shading
The
current.
The
currents
high
determine
high
dropout
and
high
dropout
adjustable
while
the
turn
must
determines
percent
80
Should
must
ring
unit
The
Hi-Seismic
Hi—Seismic
High
Inst.
(Amps)
maybeapplied
dropout
the
dropout
turning
core,
loosening
When
held
be
the
dropout
it
be
always
assembly
pick
will
operating
Dropout
Unit
unit
current
instantaneous
current
unit.
(A)
core
the
the
locknut
preveit
to
quietness
at
necessary
be
from
up
time
dropout
high
Hz
is
coil
limiting
is
approximately
sets
core
tightening
or
the
to
turned
being
the
at
is
shown
Movable
Lead
Position
shorter
for
in
series
element
is
unit
pickup
the
(counterclockwise,
up
must
(B)
turning.
from
it
operation
of
minimum
change
in
loosened.
scale-plate
instantaneous
the
in
setting
the
clockwise
Fig.
lengths
with
similar
80
level.
be
loosened.
the
in
dropout
marking
4.
the
for
90
-
locknut,
Rotation
the
and
direction
Fig.
unit
TABLE
Mm.
Pickup
Amps
time
of
time
overcurrent
continuous
both
standard
the
to
percent
Turning
top
After
the
picked
approximately
setting,
or
plus
shows
S
burdens
2
I
Burdens
R
in
accordance
and
instantaneous
the
core
adjusting
the
position.
sleeve
view).
minus
transient
listed
pickup
down
increases
(C)
shading
percent
90
five
Mm.
at
of
the
view)
sleeve
of
up
the
(top
are
Pickup_(Ohms)
unit
short
the
which
to
The
(C)
This
percent
overreach
in
Table
Z
with
the
coil,
time
current.
(clockwise,
pickup.
the
core,
the
sets
ring
core
dropout
which
to
will
with
2.
Burdens
Times_Pickup
3
formula:
Table
see
ratings.
except
unit
Fig.
3
top
Before
locknut
the
shading
dropout
the
been
has
the
at
shading
the
prevent
gradually
characteristics.
in
Ohms
10
and
I,
it
Is
a
view)
must
ring
factory
maximum
the
(Z)
20
GEK
has
picture
lowers
attempt
(D)
level
ring
sleeve
applied
no
be
is
set
set—
and
to
CD)
and
tion
outline
The
diagram
2-8
2-8
4-16
4-16
10-40
10—40
20-80
20-80
is
and
shown
60
50
60
60
[50
panel
in
50
60
50
drilling
Fig.6of
The
0.52
0.22
0.44
0.19
0.13
0.056
0.12
0.052
0.029
0.017
0.025
0.014
0.021
0.013
0.017
0.011
internal
connec
0.77
2
4
2
4
4
8
4
8
10
20
10
20
20
40
20
40
INSTALLATION
is
shown
0.26
0.68
0.24
0.22
0.079
0.19
0.069
0.045
0.020
0.039
0.017
0.025
0.018
0.021
0.015
instruction
in
0.66
0.16
0.56
0.13
0.18
0.030
0.14
0.030
0.027
0.007
0.024
0.006
0.008
0.001
0.007
0.001
book
diagram
this
2-4
4-8
2-4
4—8
4-8
8-16
4-8
8-16
10-20
20-40
10-20
20-40
20-40
40-80
20-40
40-80
supplement.
L
H
L
H
L
H
L
H
L
H
L
H
L
H
L
H
0.66
1.02
0.23
0.30
0.60
0.88
0.22
0.27
0.18
0.29
0.061
0.084
0.024
0.075
0.053
0.021
0.046
0.018
0.027
O.OU
0.022
O.0l0.O12
GEK-45375.
0.16
0.056
0.037
0.018
0.032
0.015
0.022
0.014
0.018
0.52
0.22
0.48
0.19
0.14
0.056
0.13
0.054
0.032
0.017
0.028
0.014
0.022
0.014
0.018
0.012
4
GEK-b5512
TIME
IN
SEALTARGET
TIME
FOR
OVERCURRENT
UNIT
AL-N
E
T
AROFT
TAP
SE[.LCT
DR
DIAL
SELECTION
TAP
N
--
INSTANTANEOUS
RANGE
BLOCK
UNIT
SELECTION
LINK
SEAL-IN
FOR
TARGET
INSTANTANEOUS
OVERCURRENT
UNIT
SEAL-IN
TAP
TARGET
SELECTOR
SCREW
Fig.
(8043607)
1
Type
IFC53M
Relay,
5
Renoved
fro
Cise.
Front
‘[lew
INS
IANTANEOUS
HIGH
DROPOUT
UNIT
WITH
ADJUSTABLL
/
CORE
-MAGN
ASSEMBL’
TIME
OVERCURREN
UNIT
El
FOR
Fig.
2
(8O436O8
Type
IFC53M
Relay,
6
Removed
from
Case,
Rear
View
ADiUSABLE
LOCKNUT(B)
)tL
E’
CORE
(A)
..‘--
—
—SHADING
-
RiNG(D
high
the
.3
Fi1.
8O3b363
Construction
of
1
Dropout
Instantaneous
Linit
GE
K-6
557?
c
030
.
0.025
0
LI
U,
o.c20
LI
—
OPERATING TIME
RANGE
PICKUP
ANY
FOR
SETTING
0.015
D
0
0010
005
o.
0
0
1
2
3
4
MULTIPLES
5
OF
PICK—UP
6
7
8
9
10
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Ti
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Vrsus
Current
for
the
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GEK-65572
INDUCT
ION
LNSTANTANEOUS
HI
DROPOUT
N
SI
*
Fig.6(o275A4554-a)
*
2
=
SHORT
FINGER
Internal
Connection
10
Diagram
for
Type
(0
IFC53M
Relays
GE
Power
Management
Anderson
215
Markham,
Canada
Tel:
Fax:
www.ge.comlindsyslpm
L6E
(905)
(905)
Avenue
Ontario
1B3
294-6222
201-2098
INSTRUCTIONS
GEK—45375J
OVERCURRENT
TIME
Types
IFC51A
IFC53A
IFCJ7A
and
and
and
RELAYS
51B
53B
778
Protection
GE
Great
205
Malvern,
and
Valley
19355-1337
PA
Control
Parkway
GEK-45375
CO
N
TENTS
DESCRIPTION
APPLICATION
CONSTRUCTION
RATINGS
TIME
OVERCURRENT
HIGH-SEISMIC
HIGH-SEISMIC
CONTACTS
BURDENS
CHARACTERISTICS
TIME
OVERCURRENT
HIGH-SEISMIC
HIGH-SEISMIC
RECEIVING,
ACCEPTANCE
VISUAL
HANDLING
TESTS
INSPECTION
MECHANICAL
DRAWOUT
GENERAL
TIME
RELAY
POWER
OVERCURRENT
HIGH-SEISMIC
HIGH-SEISMIC
UNIT
INSTANTANEOUS
TARGET
AND
UNIT
INSTANTANEOUS
TARGET
AND
AND
STORAGE
INSPECTION
TESTING
REQUIREMENTS
UNIT
INSTANTANEOUS
TARGET
AND
UNIT
SEAL-IN
UNIT
SEAL-IN
UNIT
SEAL-IN
UNIT
UNIT
UNIT
3
3
5
6
6
7
8
8
9
10
10
10
10
10
11
11
H
12
12
12
13
14
INSTALLATION
INSTALLATION
PERIODIC
CHECKS
TIME
OVERCURRENT
HIGH-SEISMIC
HIGH-SEISMIC
CONTACT
COVER
SYSTEM
SERVICING
TIME
OVERCURRENT
HIGH-SEISMIC
HIGH-SEISMIC
RENEWAL
LIST
OF
PARTS
FIGURES
TESTS
AND
INSTANTANEOUS
TARGET
CLEANING
CLEANING
TEST
INSTANTANEOUS
TARGET
ROUTINE
UNIT
AND
UNIT
AND
MAINTENANCE
UNIT
SEAL-IN
UNIT
UNIT
SEAL-IN
UNIT
—2-
15
15
16
16
16
16
16
17
17
17
17
19
19
20
40
GE
K-
45375
type
The
phase,
available
IFC51B,
The
overcurrent
levels.
relays.
described
are
equipped
When
semi
capability,
overcurrent
Components
the
IFC
time
Both
with
flush
are
538
unit,
The
including
unit
relays
covered
overcurrent
follows:
as
and
which
instantaneous
time
the
detail
in
dual-rated
a
mounted
when
Program
relays.
IFC51A,
IFC53A,
IFC77A,
778
relays
overcurrent
on
both
is
it
of
Underwriters
TIE
by
IFC51B
1FC538
IFC77B
provides
unit
the
in
target
suitable
a
the
supplied.
OVERCURRENT
TYPES
IFC51A
IFC43A
IFC77A
DESCRI
these
also
and
and
and
PTION
instructions
various
The
—
Inverse
—
Very
Extremely
-
include
518
53B
778
instantaneous
included
not
is
and
unit
section
and
seal-in
on
panel,
target
seal-in
Also,
Laboratories,
RELAYS
are
time-current
time
inverse
time
inverse
hinged-armature
a
tripping
in
instantaneous
the
CONSTRUCTION.
unit.
these
relays
unit
these
relays
Inc.
extended
time
the
and
at
IFC51A,
have
the
are
range,
characteristics
instantaneous
high
53A
overcurrent
Each
a
relay
high
instantaneous
recognized
single
current
or
unit
seismic
under
77A
is
relay
The
outline
connections
for
the
Time
overcurrent
industrial
protection
Figures
where
they
distribution
allow
which
for
results
devices
Such
of
load
feeder
every
further
the
but
is
mounted
and
panel
are
IFC51B,
power
at
10
and
are
cutouts
cold
as
such
accumulations
full
These
possible
information
purchasers
Do
the
no
such
drilling
shown
53B
relays
distribution
other
22,
of
required
load
in
a
refrigerators,
load
instructions
continqenry
purposes,
required
extent
assurance
in
in
77B.
and
are
locations.
the
and
pickup
heavy
current
do
desired
be
the
given
is
size
a
are
Figure
used
IFC77A
to
reclosers.
such
accumulation
often
for
not
purport
met
to
be
or
should
matter
products
the
with
drawout
Cl
shown
for
4
APPLICATION
extensively
systems
The
and
coordinate
results
as
water
produce
short
a
cover
to
connection
jn
particular
be
described
to
referred
local
should
respect
case
in
Figures
the
IFC51A,
for
and
frequently
EXTREMELY
77B
relays
rather
They
also
from
loads
of
heaters,
inrush
time
codes
or
installation.
arise
the
to
meet
and
details
all
with
problee’
herein
-3—
of
and
23
53A
the
INVERSE
are
closely
provide
an
of
water
currents
after
variations
which
General
applicable
ordinances
molded
24.
77A,
and
protection
for
time
designed
maximum
extended
automatically
pumps,
considerably
feeder
the
equipnt
in
are
ANSI,
because
or
covered
not
CoaflY.
operation
Electric
construction.
relay
The
and
of
overload
charactersistics,
primarily
with
power
tolerance
service
burners,
oil
is
to
flat
wsintananCe
sufficientl
NE
and
IEEE
vary
thei
gr.atly.
internal
Figure
in
utility
for
outage,
controlled
in
energized.
provide
Should
standards,
The
5
and
backup
use
fuses,
to
etc.
excess
for
for
The
EXTREMELY
these
The
relays
the
relatively
fault
location
The
and
magnitude
INVERSE
faster
magnitudes
impedance
The
fault
single—phase-to—ground
cation
because
fa
VERY
available
INVERSE
513
usual
u
1
t
s.
loads
INVERSE
are
current
of
relays
devices.
overall
protection,
are
it
INVERSE
and
likely
constant
the
time
of
the
vary
due
to
application
shown
can
at
time
fault
through
fault
tend
protection
significantly
system
in
be
time
the
same
characteristics,
to
provide
current
generating
with
overcurrent
to
fault
one
For
current
this
loading
of
per
faults.
Figure
set
characteristic
time
the
respect
make
in
these
phase,
9.
provide
to
GEK—45375
provides
faster
magnitude
capacity.
relay
to
characteristics,
the
relay
than
reason,
applications
as
a
and
switching.
relays
and
Typical
Use
of
adequate
Figures
overall
remains
is
therefore
the
relay.
operating
in
the
INVERSE
result
requires
separate
a
external
a
separate
more
sensitive
often
protection
The
case
type
where
of
permits
7
and
variation
Figures
time
of
relays
the
frequent
three
relay
connections
ground
fault
21,
fairly
mainly
6
VERY
available
residually
protection
successful
protection.
of
in
constant
in
dependent
and
less
INVERSE
are
changes
relays
relay
the
IFC53A
applications
the
magnitude
20,
of
dependent
and
likely
fault
in
for
connected
for
this
is
advantageous
against
pickup
and
53B
where
due
to
upon
the
upon
EXTREMELY
to
the
multiphase
the
IFC51A
the
provide
current
source
for
appli
ground
of
a
of
In
the
devices,
for
the
position
reset
EXTREMELY
INVERSE
When
time
clearing
estimated.
time,
For
coordination
time
times
relays
setting
of
0.10
example,
is
tested,
downstream
(0.08
times
Figures
+
are
0.10
10,
operating
relay
and
the
in
to
with
the
necessary
appropriate
percent
the
breaker
operating
this
value.
application
the
relay
relay
when
time
set
the
set
are
INVERSE
these
from
of
These
seconds
if
time
for
safety
breaker
+
marginal
11
time
which
of
time
reset
to
go
from
at
the
proportionately
relays
covered
relays
0.25
to
the
breaker
coordination
for
the
breaker
would
the
specific
factor
time
0.07)
could
or
or
12
to
necessary
coordination
time
curve
of
operating
time
to
determine
of
these
time
the
number
is
by
these
to
0.40
relay
be
0.40
may
is
5
be
impossible
refine
to
dial
setting
Figure
time,
and
the
the
relays
should
contacts—fully-closed
10
time
lower.
approximately
instructions
coordinate
seconds
involved
times
overtravel
clearing
seconds
current
be
cycles
allowed
to
the
relay
just
is
match
desired.
10,
and
covert
safety
final
be
is
and
include,
time
level
reduced
(0.08
for
obtain,
to
provide
11
or
factor
relay
with
considered.
dial.
The
with
generally
(0.13
settings.
the
downstream
At
reset
60
seconds.
is
approximately
downstream
how
accurately
in
and
0.17
is
0.13
+
0.10
at
the
to
0.07
seconds),
coordination.
use
the
operating
Determine
this
12
to
determine
this
into
time
operating
This
position
lower
time
allowed,
addition
seconds
seconds
site,
a
relay
First
relay
real
and
automatic
is
time
all
of
The
relays,
the
to
for
+
0.17).
and
seconds.
minimum
If
overtravel
determine
time
the
multiple
operating
the
time.
the
time.
the
to
the
dial
VERY
reset
12
seconds.
a
depending
relay
breaker
safety
(8
if
of
relay
of
the
overtravel
Add
original
Set
reclosing
time
required
fully—open
settings
INVERSE
time
coordination
cycles),
If
it
Then
0.25
time
of
on
can
clearing
factor.
the
has
if
seconds
coordination
curves
the
downstream
pickup
of
time.
this
the
relay
the
and
all
the
be
the
relay
been
the
of
relay
Use
time
time
relay
to
—4-
GEK-45375
Once
will
contact
circuit
overreach
device
The
connection.
activated
completes
disk
closing
molded
the
open
wipe.
instantaneous
breaker
cleared.
The
instantaneous
has
the
inception
transient
proportionately
scheme.
14.
structure
show
i-Magnet.
transient
a
result
and
IFC
the
assembly
current.
housing
induction
current
in
approximately
reclosing
of
the
of
a
overreach
should
thereby
The
operating
induction
assembly,
See
by
a
The
the
alarm
on
in
the
relay
This
is
overeach
DC
fault.
so
Cover
current—operating
disk
is
Its
the
permits
reclosed
overcurrent
characteristic
offset
When
must
be
applied
that
the
cause
time
disk
and
Figure
unit
mounted
and
or
trip
restrained
rotation
support
schemes
be
relays
operating
6
cycles
the
without
on
a
unit
is
that
determining
taken
to
instantaneous
loss
a
characteristics
CONSTRUCTION
consist
connection
a
and
to
coil
shaft
circuit
by
a
is
structure.
(0.1
use
circuit
present
usually
into
increase
of
coordination
Figures
the
mounted
assembly
when
spiral
retarded
coil
second)
the
of
risk
from
in
as
illustrated
present
the
pickup
consideration.
the
unit
of
of
a
plug
1,
2,
molded
it
carries
touches
spring
by
support
on
a
is
cut
relay
of
which
the
setting
calculated
will
this
molded
to
3
either
to
permanent
off,
with
false
a
a
IFC51B,
in
in
the
not
overreach
the
in
unit
case,
make
and
structure.
moving
a
a
stationary
give
normal
in
fault
Figure
line
The
are
up
19.
a
laminated
the
magnet
the
relay
adjustment
conjunction
retrip
has
53B
and
current
for
this
percent
pickup
system
shown
cover,
the
Figures
contact,
contact.
proper
contacts
when
just
77B
13.
unit,
transient
downstream
a
protection
in
electrical
2
This
EE-
mounted
with
been
relays
This
at
setting
Figure
support
and
disk
or
which
contact
in
of
the
is
the
the
3
is
a
The
a
The
drawout
provisions
front.
fingers
opened
fingers
lower
secondary
shorting.
on
the
the
drawout
There
left
of
unit
has
the
time
seal—in
the
raises
by
pressing
As
in
before
on
front
case
is
a
the
its
overcurrent
a
target
connection/test
for
the
the
the
connections.
The
and
element
High-Seismic
shaft
unit
a
14
connection
output
any
case
the
of
connection
finally
coil
picks
into
reset
connection
contact
other
connection
case)
completely.
of
the
in
series
unit,
up
view,
button
circuits
The
plug
those
target
time
and
which
located
system
points,
plug
to
and
such
for
is
withdrawn,
circuits
are
block
short-circuit
window
then
clears
on
the
and
seal-in
overcurrent
its
contacts
that
seals
latches
on
the
and
a
first.
disconnected.
engage
provides
relay
when
in.
up
the
upper
—5—
Cl
visible
the
the
support
unit
unit
the
When
and
case,
it
shorting
external
current
(see
in
parallel
induction
the
remains
left
shown
CT
clears
Thus,
visual
structure,
mounted
Figure
seal—in
side
shorting
the
the
Next,
bar
current
confirmation
circuit
on
with
unit
exposed
of
in
the
1).
unit
the
Figure
bar
shorter
trip
current
(located
contact
to
front
the
contacts
picks
until
cover.
19,
located
contact
circuit
circuit
at
transformer
of
fingers
de-energize
to
The
seal—in
contacts
close,
up,
released
has
up
is
the
CT
the
of
it
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