GE IBCG51M*Y1A Series, IBCG53M*Y1A Series, IBCG78M, IBCG52M, IBCG54M Instruction Manual
...
INSTRUCTIONS
GEK-49822E
GROUND
DIRECTIONAL
TYPES
IBCG51M
IBCG51M(.-)Y1A
I
BCG52M
IBCG53M
IBCG53M(—)Y1A
IBCG54M
IBCG77M
I
BCG78M
OVERCURRENT
RELAYS
GE
Protection
Great
205
Malvern,
and
Valley
PA
19355-1337
Control
Parkway
GEK-4
9822
CONTENTS
DESCRIPTION
APPLICATION
RATINGS
OVERCURRENT
TIME
DIRECTIONAL
UNIT
INSTANTANEOUS
TARGET
AND
SEAL-IN
CONTACTS
CHARACTERISTICS
PICKUP
RESET
OPERATING
(TIME
OVERCURRENT
TIME
BURDENS
CONSTRUCTION
DIRECTIONAL
UNIT
CONTACTS
TIME
OVERCURRENT
TARGET
SEAL-IN
INSTANTANEOUS
RECEIVING,
HANDLING
STORAGE
ACCEPTANCE
VISUAL
MECHANICAL
TOP
BOTTOM
TARGET
TESTS
INSPECTION
INSPECTION
UNIT
(TOC)
UNIT
AND
SEAL-IN
INSTANTANEOUS
DRAWOUT
POWER
TARGET
PICKUP
TIME
CURRENT
TIME
PICKUP
TIME
RELAYS,
REQUIREMENTS,
AND
SEAL-IN
AND
DROPOUT
OVERCURRENT
SETTING
SETTING
TEST
TEST
UNIT
UNIT
UNIT
UNIT
UNIT
UNIT
AND
(DIR)
UNIT
GENERAL
UNIT
UNIT
UNIT)...
UNIT!
GENERAL
TEST
PAGE
3
4
5
6
7
7
8
8
8
8
9
9
9
11
11
11
11
12
12
12
13
13
13
13
13
13
14
14
14
14
15
15
16
16
16
DIRECTIONAL
CURRENT
POTENTIAL
INSTANTANEOUS
INSTALLATION
LOCATION
MOUNTING
CONNECTIONS
INSPECTION
CAUTION
OPERATION
TARGET
TIME
AND
OVERCURRENT
DIRECTIONAL
CURRENT
POTENTIAL
INSTANTANEOUS
PERIODIC
CHECKS
MAINTENANCE
TARGET
TIME
AND
OVERCURRENT
DIRECTIONAL
INSTANTANEOUS
SERVICING
TARGET
TIME
AND
OVERCURRENT
DISK
AND
CONTACT
CHARACTERISTICS
AND
ADJUSTMENTS
DIRECTIONAL
BEARINGS
CUP
AND
CONTACT
BIAS
TORQUE
CLUTCH
ADJUSTMENT
INSTANTANEOUS
CONTACT
RENEWAL
PARTS
UNIT
POLARIZATION
POLARIZATION
UNIT
SEAL-IN
UNIT
UNIT
UNIT
POLARIZATION
POLARIZATION
UNIT
AND
ROUTINE
SEAL-IN
UNIT
UNIT
UNIT
UNIT
SEAL-IN
UNIT
UNIT
BEARINGS
ADJUSTMENT
CHECK
UNIT
STATOR
ADJUSTMENTS
ADJUSTMENT
UNIT
CLEANING
PAGE
17
17
17
17
17
17
18
18
18
18
18
18
18
19
19
19
ig
19
19
19
19
20
20
20
20
20
20
20
21
21
21
21
22
22
23
23
23
2
GEK—49822
The
Type
the
protection
inverse,
All
the
an
instantaneous
can
be
controls
A
target
this
that
the
seal-in
unit
unit
it
to
IBCG
very
IBCG
potential
the
seal-in
is
will
unit
provide
IBCG51M
IBC
G
IBCG52M
relays
of
inverse
relays
directional
operation
unit
connected
pick
are
protection
GROUND
Fl
5
1
(
-
are
feeders
or
contain
polarized,
of
is
in
up
whenever
connected
DIRECTIONAL
Y
1
A
)
ground
and
extremely
a
unit
or
the
time
provided
series
for
them
I
BC
DESCRIPTION
directional
transmission
inverse
time
overcurrent
of
the
current
overcurrent
in
with
time
the
in
parallel
and
OVERCURRENT
TYPES
IBCG53M
3M
G
5
(
-)
IBCG54M
overcurrent
lines.
time
induction
polarized,
each
the
of
contacts
overcurrent
with
their
associated
YIA
They
characteristics.
unit
of
cup
or
unit.
the
relays.
of
unit
the
contacts
RELAYS
relays
the
type.
both,
the
operates.
control
are
induction
The
time
of
IBCG77M
678
IBC
used
available
The
directional
and
it
operating
overcurrent
The
the
time
springs.
M
primarily
with
disk
directionally
contacts
overcurrent
type
coil
unit
for
either
and
unit
for
so
of
Those
relays
Hi—Seismic
The
IBCG52M,
IBCG51M,
All
the
panel
for
are
Table
drilling
the
shown
I
instantaneous
53M
and
IBCG
relays
by
Figures
lists
These
every
possible
further
the
purchaser’s
To
but
no
such
having
54M
the
relays
dimensions
are
the
various
instructions
conttngency
infornation
the
extent
assurance
and
are
given
purposes,
the
77M
10,
be
required
the
desired
is
designation
overcurrent
78M
relay
mounted
for
in
Figure
11
and
models
do
purport
not
eet
to
be
or
the
matter
products
the
with
given
relay
models
in
which
12.
and
to
In
should
should
respect
Y1A
unit
models
respectively.
standard
are
5,
ranges
cover
connection
particular
referred
be
described
local
to
following
of
given
6,
7,
details
all
with
problem
herein
3
that
codes
the
are
Ml
in
8
and
or
installation,
arise
the
to
meet
and
hinged
the
size
Figure
are
variations
General
applicable
ordinances
the
model
armature
two-contact
drawout
9.
Typical
available.
operation
which
are
£I.ctrC
in
ANSI,
because
26.
.quipaient
or
covered
not
Conça,29.
IEZ’E
number
construction.
cases,
Internal
external
nor
,aint.nanc..
sufficxantly
and
vary
they
versions
the
to
provide
RXNA
greatly.
also
outline
connections
5hould
standards,
contain
of
connections
for
for
a
the
and
GEK—49822
I
The
ground
•
Relay
Model
IBCG51M(-)A
IBCG52M(-)A
II3CG51M(-)Y1A
IBCG53M(-)A
IBCG54M(-)A
IBCG53M(—)Y1A
IBCG77M(-)A
IBCG78M(—)A
Type
fault
IBCG
relays
detectors
EXTENDED
Time
Characteristic
Inverse
Inverse
Inverse
Inverse
Very
Inverse
Very
Inverse
Very
Extremely
Extremely
ground
are
a
transmission
in
Inverse
Inverse
APPLICATION
directional
TABLE
RANGE
Inst
Unit
No
No
Yes
No
No
Yes
No
No
line
I
RELAYS
IBCG
Inst.
-
-
6-150
-
-
6-150
-
—
overcurrent
protective
Pickup
0.5-4,
0.5—4,
0.5—4,
0.5-4,
0.5-4,
0.5-4,
0.5-4,
0.5—4,
Range
Time
relays
relaying
2-16
2-16
2-16
1.5-12
1.5-12
1.5-12
1.5-12
1.5—12
that
scheme.
may
mt
Conn.
Fig.
Fig.
Fig.
Fig.
Fig.
Fig.
Fig.
Fig.
be
5
7
6
5
7
6
8
9
used
as
relays
The
instantaneous
a
unit.
source
from
the
conditions
voltage
of
current
The
shown
current
polarization
using
alone.
differences
in
flowing
capacity
the
upon
to
value,
should
be
is
relays
upon
all
set
this
there
circuit-current
may
inverse
The
tap
exceedingly
be
time
operating
setting
proportional
contain
It
may
dual
Table
the
at
location
the
selective
the
wide
a
relays.
is
to
directional
of
potential,
is
advantageous
cause
polarization
between
I.
through
time
used
be
of
system
operating
range
with
long
time
of
determined
the
time
a
current
might
the
Inverse
given
a
the
of
in
cases
the
fault
generating
with
maximum
in
fault
with very
such
For
the
current
overcurrent
overcurrent
current,
or
polarization
favored
be
compared
as
various
time
relay
fault.
where
in
setup.
time
generating
position,
cases,
time
overcurrent
by
the
magnitude
to
use
relays
is
Very
the
relation
fault
becomes
the
inverse
the
time-dial
unit.
or
dual
others.
at
to
models
should
influenced
fault
to
The
current
greater
capacity,
operating
time
inverse
as
illustrated
unit
that
The
sources
both
polarization
be
to
polarization
covered
be
inverse
current
the
relay,
reason
flowing.
as
together
relays
time
unit
for
setting.
is
directional
may
favored
Figure
from
by
used
largely
time
magnitude
this
for
the
time
and
relay
any
The
by
torque
controlled
unit
used
be
because
some
at
illustrates
13
source
a
this instruction
systems
on
by
the
and
extremely
is
only
and
For
current
with
with
even
is
given
slightly
is
that
fault
variation
minimum
longer
more
value
is
operating
the
time
curves
be
may
dual
to
changing
times
of
where
system
inverse
dependent
relays
currents
decreased.
fault
with
applicable.
current
of
time
is
by
polarized
polarize
system
whereas
effect
the
voltage
book
the
fault
generating
mainly
not
or
must
below
short-
in
current
extremely
inversely
in
Figures
an
or
are
time
at
be
If
and
4
15,
of
same
in
16
the
both
for
and
tap
cases
80
17.
setting.
amperes
the
Note
current
on
that
That
the
the
8
is
current
is,
ampere
10
for
times
G[K-49822
values
a
given
tap
as
setting.
on
time-dial
for
50
these
amperes
curves
setting,
on
are
the
the
given
5
time
ampere
as
will
multiples
be
tap,
the
since
If
selective
possible
relay
the
opening
The
be
set
In
determining
directly
that
several
ViA
high
short-circuit
each
relays
behind
non-directional.
maximum
in
The
external
Figure
IBCG
models.
the
800
series
(see
circuits
since
coil
entire
Table
of
all
ratings
operating
action
differs
circuit
breaker
to
19,
should
relays
The
TOC
I),
the
operating
of
contain
trip
the
the
The
fault
described
(time
IAC
have
TOC,
all
circuit.
of
two
current
sufficiently
breakers.
after
Hi-Seismic
a
directly
setting
relay
unit
current.
be
also
overcurrent)
relays.
extended
JOC
and
current
units
the
for
as
should
taken
in
the
circuits
should
or
more
of
to
Allowance
relay
for
faults
this
well
be
The
into
this
IOC
The
(25—to-i)
directional
relays
line
the
insure
contacts
instantaneous
unit,
at
as
set
effects
account
RATINGS
instruction
units
(instantaneous
are
considered
be
is
required,
and
then
choose
the
must
proper
be
sequence
made
close.
overcurrent
some
with
the
it
have
distance
will
remote
a
of
in
be
terminal,
suitable
transient
determining
are
available
extended
necessary
overcurrent)
range.
units
Ratings
are
shown
normally connected
in
determining
for
down
amount
overreach,
(8-to—i)
of
determine
time
a
in
the
unit.
the
transmission
to
because
of
setting.
the
in
operating
the
individually.
series,
in
the
value
the
time
consider
margin
as
50
range
units,
the
operation
involved
This
the
illustrated
and
similar
the
rating
maximum
for
unit
line.
faults
unit
above
hertz
60
when
current
However,
operating
of
each
of
in
may
is
the
to
used
the
Relay
Model
IBCG51M
IBCG51M(—
IBCG52M
IBCG53M
IBCG53M(IBCG54M
IBCG77M
IBCG78M
)V1A
)Y1A
ONE
SECOND
Range
(Amps)
0.5-4.0
2.0-16
0.5—4.0
1.5-12
0.5-4.0
1.5-12
5
TABLE
RATING
H
OF
TOC
UNITS
One
Rating
Second
(Amps)
70
260
140
260
125
260
TIME
OVERCURRENT
GEK—49822
UNIT
1
The
for
V.
second
the
Model
IBCG51M
IBCG51M(-)Y1A
IBCG5?M
IBCG53M
IBCG53M(—)Y1A
IBCG54M
IBCG77M
IBCG78M
various
0.5-4.0
ratings
taps
of
the
of
each
CONTINUOUS
Range
Amp
Tap
Rating
(Amps)
TOC
model
0.5
1.6
4.0
3.5
units
and
RATING
0.6
1.8
4.5
3.7
4.0
are
current
TABLE
OF
0.7
2.0
5.5
given
III
0.5-4.0
0.8
2.1
5.5
4.5
in
range
1.0
2.3
6.0
5.0
Table
AMP
2.7
7.0
5.5
are
1.2
TOC
II.
given
UNITS
1.5
3.0
7.5
6.0
The
in
2.0
3.5
9.0
7.0
continuous
Tables
2.5
4.0
10.0
8.0
III,
3.0
4.5
11.0
9.0
ratings
IV
4.0
5.0
13.0
10.0
and
1.5-12.0
Model
IBCG53M
IBCG53M(-)Y1A
IBCG54M
IBCG77M
IBCG78M
Amp
CONTINUOUS
Range
Tap
Rating
(Amps)
1.5
10.0
r
9.5
RATING
2.0
11.5
10.5
TABLE
OF
2.5
13.0
11.5
6
IV
1.5-12.0
3.0
14.5
12.5
4.0
17.0
14.0
AMP
19.0
15.5
5.0
TOC
UNITS
6.0
21.0
17.0
7.0
23.0
18.0
8.0
23.5
19.0
10.0
27.5
20.0
12.0
30.5
20.0
GEK-49822
2-16.0
Amp
Model
IBCG51M
IBCG51M(-)Y1A
IBCG52M
DIRECTIONAL
directional
The
of
5
amperes
The
potential
for
60
UNIT
seconds.
INSTANTANEOUS
Range
unit
anda1
polarizing
UNIT
CONTINUOUS
Tap
2.0
Rating
8.0
(Amps)
9.5
current
second
rating
coils
RATING
2.5
9.0
10.5
polarizing
of
will
TABLE
OF
3.0
10.0
11.5
150
withstand
V
2-16.0
4.0
12.0
12.5
and
amperes.
AMP
5.0
14.0
14.0
operating
120
TOC
6.0
15.0
15.5
volts
UNITS
7.0
16.0
17.0
coils
continuously
8.0
17.5
18.0
have
10.0 12.0
20.0
20.0
19.0 20.0
continuous
a
and
360
16.0
20.0
20.0
rating
volts
instantaneous
The
operation
is
accomplished
the
applicable
range,
mounted
on
either
connect
on
terminal
Instantaneous
Unit
6-150
**
The
28-150.
the
be
sure
rat
i
unit
one
by
the
internal
lead
T
6.
CONTINUOUS
(Amps)
range
There
maximum
to
n
g.
coil
of
positioning
connections
terminal
to
For
approximate,
is
will
setting
L
select
is
two
range
the
the
of
ranges
6
L,
AND
Range
always
and
higher
hinged
(H
of
leads
diagrams
and
reverse
TABLE
SECOND
ONE
L
H
which
be
the
or
L).
T
lead
VI
Range
(Amps)
-
6
-
30
means
least
at
minimum
range,
armature
Selection
and
E
referred
the
to
E
leads
RATINGS
30
150
that
1
H
since
construction
at
terminal
to
auxiliary
and
T
OF
Continuous
Rating
(Amps)
6-30,
ampere
setting.
it
has
in
E.
lOG
10.2
19.6
of
the
Table
UNIT
30-150
overlap
Whenever
the
and
high
See
6.
I.
terminal
One
Second
Rating
(Amps)
may
between
higher
is
or
Table
For
that
260
be
possible,
continuous
tapped
low
the
6—29,
range
VI
H
is
for
and
7
GEK-49822
TARGET
The
in
Table
coil.
The
0.2
0.2
up
trip
of
7
tripped.
AND
rating
VII.
DC
RESISTANCE
MIN
OPERATING
CARRY
CARRY
CARRY
60
Hz
ampere
to
coils
ohms
will
SEAL-IN
and
UNIT
impedance
The
+10%
(AMPERES)
CONT.
30
10
(AMPERES)
AMPS
AMPS
FOR
FOR
IMPEDANCE
tap
2.0
is
amperes,
requiring
reduce
tap
(OHMS)
(SEC.)
(sEC.)
(OHMS)
for
at
more
the
of
setting
use
the
than
current
the
seal-in
used
SEAL-IN
+0-25%
with
minimum
2
amperes,
trip
to
unit
will
TABLE
UNIT
coils
control
there
so
low
for
depend
VII
RATINGS
which
voltage.
is
a
value
the
on
0.2
8.3
0.2
0.37
0.05
0.45
50.0
operate
a
possibility
0.2
the
that
and
current
on
If
the
2
ampere
TAP
—
currents
this
that
breaker
drawn
tap
the
taps
by
2.0
0.24
2.0
2.3
2.2
20
0.65
ranging
is
used
resistance
will
are
the
not
given
trip
from
with
be
The
2.0
minimum
maximum
tions
ary
it
relay
should
relay,
may
coil
CONTACTS
The
current-closing
exceeding
the
seal—in
PICKUP
When
the
it
potential
maximum
will
connected
potential
ampere
control
control
be
which
be
necessary
to
250
unit.
torque
pick
up
in
series.
polarization
tap
voltage,
voltage.
arranged
in
allow
volts.
polarized,
angle
at
should
be
provided
If
so
that
turn
energizes
to
connect
enough
rating
Their
current
of
current-carrying
the
of
60°
approximately
The
performance
is
typified
used
with
the
the
tripping
the
induction
the
a
loading
to
operate
the
induction
CHARACTERISTI
directional
lag
(current
0.5
ampere
in
Figure
8
current
trip
of
trip
unit
the
coils
current
unit
coil
resistor
the
unit
rating
Cs
will
lags
with
unit
13.
that
does
exceeds
contacts
or
coils.
in
target
is
is
pick
voltage).
the
with
take
not
exceed
parallel
seal-in
30
amperes
limited
up
operating
simultaneous
30
will
On
by
at
When
and
2
amperes
30
amperes,
operate
such
with
unit.
for
the
3.6
volts-amperes
current
polarizing
amperes
the
an
application,
the
voltages
tap
polarized,
current
or
more
connec
an
auxili
auxiliary
rating
at
coils
at
the
not
of
at
and
The
of
current
the
tap
required
screw
setting.
to
close
the
GEK—49822
overcurrent
time
unit
contacts
will
be
within
5%
RESET
(TIME
Inverse
inverse
When
to
relays,
the
time
the
number
and
OPERATING
The
time
The
time
respectively
operating
same
same
time.
The
time-current
Figure
The
60
the
18
capacitive
cycles
current
OVERCURRENT
time
overcurrent
units
relay
is
10
60
seconds
TIME
curve
curves
for
of
for
conditions,
and
its
burden
and
120
circuit
UNIT)
at
80%,
de-energized,
time
dial
for
the
directional
time
the
inverse,
characteristic
transient
of
the
volts
is
burdens
units
and
position
very
overcurrent
very
the
overreach
potential
10
of
reset
extremely
the
inverse
unit
inverse
relay
of
volt
the
amperes
directional
at
90%
inverse
time
required
is
approximately
time
is
shown
unit
and
will operate
the
Hi-Seismic
characteristic
BURDENS
polarizing
of
time
and
extremely
in
are
extremely
at
0.86
unit.
the
minimum
units
for
the
Figure
shown
inverse
repeatedly
instantaneous
is
shown
circuit
power
6
in
of
at
disk
seconds
inverse
14.
Figures
within
by
the
factor.
pickup
85%.
to
time
Figure
directional
completely
for
time
15,
relays.
1
unit
Table
current,
inverse
relays.
16
or
2%
is
shown
19.
VIII
and
For
of
unit
very
reset
time
17,
the
the
by
at
gives
Table
IX
Ordinarily
transformers
transformers.
fault
of
and
the
instantaneous
DIRECTIONAL
Circuit
perating
Polarizing
gives
the
the
potential
and
the
The
need
be
considered
UNIT
current
burden
unit.
(Ohms)
Z
0.46
0.24
circuit
circuit
current
is,
CURRENT
circuits
therefore,
only
TABLE
CIRCUIT
12.0
burdens
is
in
for
this
9
VIII
BURDENAT60
VA
6.0
of
time
the
open
are
in
only
imposed
brief
CYLES
P.F
0.52
0.95
overcurrent
corner
the
residual
for
period.
of
the
AND
broken
duration
Table
units.
circuits
AMPERES
5
Watts
6.24
5.27
delta potential
of
X
gives
of
the
the
current
ground
burden
GEK-49822
Time
Characteristic
Inverse
Inverse
Very
Inverse
Inverse
Very
Extr.
Extr.
Inverse
Inverse
**The
The
inversely
for
tap
approximately
+
Some
operate
can
a
CT
purpose.
Calculated
4
impedance
impedance
the
Type
is
22
companies
at
be
made.
secondary
CURRENT
CIRCUIT
Tap
Range
Eff.Res.
(Amps) (Ohms)
0.5/4
2/16
0.5/4
1.5/12
0.5/4
1.5/12
5.60
0.37
1.40
0.23 0.53 0.58
0.80
0.005
values
for
other
approximately
IBCG51M
ohms.
relay,
The
(0.5/1)2
list
minimum
It
pickup.
should
circuit,
from
burden
BURDENS
Burdens
given
taps,
as
impedance
x
22
=
relay
not
since
minimum
at
React.
(Ohms)
21.0
1.44
3.90
1.38
0.147
are
the
0.5/4
5.5
burdens
This
be
TABLE
at
those
at
square
amperes,
ohms.
column
used
the
IX
60
AT
Minimum
**Imped
(Ohms)
22.0
1.49
4.15
1.60
0.17
for
pickup
of
of
the
only
is
in
calculating
burden
pickup.
CYCLESOFTHE
Pickup
+Volt
5.5
5.8
1.0
1.3
0.4
0.4
minimum
P.F.
0.25 10.80
0.25
0.33
0.40
0.50
0.50
Amps
the
current
the
current
the
impedance
ampere
1
as
included
tap,
the
so
volt—ampere
5
amperes
at
UNIT
TOC
Impedance
Ohms
Times
3
Mm
P.U.
0.65
4.20 2.90
0.58 0.36
1.60 1.60
0.17 0.17
tap
of
(tap
rating),
rating.
of
the
at
volt-ampere
direct
a
is
10
Mm
5.00
0.32
each
0.5
ampere,
1
comparison
burdens
used
at
Times
P.U.
relay.
varies
Example:
ampere
input
for
*VA
At
Amperes
555.0
36.3
104.0
14.5
40.0
4.25
is
to
in
this
Fivc
Inst.
Unit
Amps
6-150
Hz
Range
60
Range
Amps
L
H
6-30
30-150
BURDENOFTHE
Mm.
Pickup
Amps
6
30
10
TABLE
X
INSTANTANEOUS
Burden
Pickup
R
0.110
0.022
0.078
0.005
UNIT
Mm
at
(Ohms)
Z
0.135
0.023
3
0.095
0.022
Burden
Times
Pickup
10
0.081
0.022 0.222
Ohms
20
0.079
(Z)
GEK-49822
IBCG
type,
of
relays
The
and
directional
its
The
disk
type.
means
overcurrent
The
IBCG
relays
by
Table
The
IBCG
I,
relays
DIRECTIONAL
directional
The
stator
stationary
the
having
central
annular
current-operating,
The
principle
relay
like
higher
resulting
with
a
split-phase
torque
in
CONTACTS
an
closing
unit.
have
UNIT
eight
air
by
wattmetric
a
faster
a
consist
of
instantaneous
unit
contacts,
have
a
target
hinged-armature
a
mounted
are
unit
is
poles
core.
gap
between
current—polarizing
which
torque
element,
induction
and
lower
and
two
is
in
of
projecting
The
rotor
more
CONSTRU
units,
a
power
either
potential
directionally
seal—in
type
the
single-ended
the
induction—cylinder
cuplike
the
poles
and
is
developed
although,
motor.
inertia
sensitive
CTI
ON
overcurrent
time
directional
or
controls
and
unit
models
instantaneous
Mi
inward
aluminum
and
and
induction
the
potential—polarizing
is
the
in
arrangement
The
induction-cylinder
than
unit.
unit
current
drawout
arranged
core.
same
the
unit
(bottom)
polarized
the
with
the
overcurrent
case.
construction
rotor
The
as
that
of
induction-disk
(top)
of
of
the
or
operation
suffix,
ViA
unit.
with
symmetrically
is
free
poles
are
coils.
of
an
parts,
the
construction
the
induction
induction
both
of
the
as
laminated
a
around
to
operate
fitted
induction
unit
provides
construction,
and,
is
cup
by
time
shown
a
in
with
disk
more
The
directional
Figure
effects
low
another,
The
conical
brush
contact
20.
of
gradient
hence,
contact
contact
(E)
brush
Similarly,
the
stationary
contact
contact
dial,
brush
contact.
together
TIME
The
by
OVERCURRENT
inverse
current-operating
coil
coils
flow
coils
operating
is
which
is
act
connected
in
to
disk.
They
vibration.
material
dial
which
on
bears
the
end
functions
retainer
The
stationary
means
time
are
such
produce
unit
of
are
they
resist
(A)
supports
tip
is
against
of
contact
of
a
UNIT
and
coil
to
connected
a
direction
contacts
the
Both
which,
(C).
mounted
the
brush
to
after
mounting
very
wound
taps
a
split-phase
that
low
the
contact
the
The
the
stationary
retainer
stop
the
the
contact
screw
inverse
on
on
the
in
series
as
control
gradient
stationary
when
separation.
stationary
moving
button
a
inner
motion
moving
support
U-magnet
a
tap
to
close
subjected
contact
face
contact
(H).
CL)
time
block.
with
field
the
type,
and
contact
contact
of
of
and
(K)
and
two
overcurrent
iron
a
directional
the
which,
time
specially
moving
to
arm
tip
the
moving
brush
The
the
contact
stationary
and
locknuts
structure.
The
directional
in
overcurrent
constructed
contact
vibration,
brush
supports
(D)
(F).
contact
bears
stop
the
screw
contact
units consist
U-magnet
turn,
(B)
against
arm
contact
(M).
unit
unit
develops
brushes
tend
on
The
(J),
striking
by
dial
The
contains
contact.
contacts,
unit
to
which
the
end
brush
the
mounted
members
tapped
are
minimize
are
to
follow
is
moving
of
the
retainer
inner
are
of
wound
When
the
torque
shown
made
mounted
contact
moving
face
on
the
moving
have
assembled
tapped
a
operating
shading
power
shading
on
in
the
of
one
a
(G).
of
the
made
the
11
The
extremely
that
used
structure
One
of
other
is
contacts,
magnetic
unit
contact,
The
disk
touches
spring
to
permanent
variable
compensated
driving
force
in
has
these
a
a
circuit.
shaft
the
give
magnet
retarding
inverse
watthour
two
is
floating
resistor,
the
carries
stationary
the
by
the
as
the
concentric
a
tapped
winding
When
unit
proper
acting
force
spiral
spring
time
overcurrent
meters
current
which
a
capacitor
power
develops
the
moving
contact
contact-closing
on
the
resulting
shape
winds
except
windings
winding
is
flow
is
torque
contact
or
contacts.
disk
of
the
up.
GEK-49822
unit
as
on
connected
and
in
such
on
the
to
produce
from
induction
follows:
the
connected
the
operating
which
current,
the
is
of
middle
in
two
a
direction
completes
The
the
gradient
disk,
the
the
to
series
coils
shaft
and
desired
wattmetric
upper
leg
taps
with
on
as
disk.
is
its
of
which
of
on
the
to
the
restrained
motion
time
the
results
type
portion
the
magnetic
the
the
directional
lower
close
trip
circuit
is
characteristic.
spiral
in
of
tap
legs
a
directional
by
retarded
an
similar
the
circuit.
block;
of
when
a
spiral
spring
increased
iron
unit
by
to
the
the
it
a
The
is
TARGET
A
seal-in
has
its
overcurrent
seal-in
operates,
manually
cover.
INSTANTANEOUS
The
IOC
the
right
obtained
range;
a
predetermined
circuit
until
releases
These
designed
it
handling
promptly
for
relays,
to
any
is
notify
Reasonable
parts
are
SEAL-IN
coil
unit
released
unit
side
by
this
and
it
is
the
protect
damage
evident,
care
injured
UNIT
unit
is
in
unit,
picks
it
raises
UNIT
is
a
of
using
combination
raising
released.
target
when
not
them
sustained
the
nearest
should
or
mounted
series
arranged
up
by
small
the
a
value,
its
of
included
file
be
the
on
the
and
its
in
and
seals—in
a
target
into
pressing
hinged-armature-type
TOC
unit.
tapped
coil
provides
the
instantaneous
target
The
the
into
same
instantaneous
RECEIVING.
as
against
a
in
damage
damage.
transit.
General
exercised
adjustments
left
contacts
such
around
view
the
button
The
which
the
view.
button
part
claim
Electric
in
disturbed.
side
in
a
manner
the
which
located
bC
element
provides
25-to-i
The
that
unit.
HANDLING
of
a
control
Inmiediately
If
at
once
Sales
unpacking
of
the
time
parallel
that
when
main
contacts.
latches
at
instantaneous
operates
a
5-to-i
total
range.
element
target
releases
AND
panel,
upon
injury
or
with
Office.
the
relay
overcurrent
with
the
up
and
the
over
low
operates,
latches
the
STORAGE
will
receipt
damage
the
transportation
in
the
main
When
remains
lower
element
a
range
When
in
target
be
resulting
order
main
contacts
left
and
25-to-i
and
the
closing
the
seal—in
shipped
of
a
that
unit.
contacts
the
seal—in
exposed
corner
is
a
current
its
exposed
relay,
company
none
This
close,
mounted
total
5-to-i
position
unit
in
cartons
examine
from
unit
of
unit
until
of
range
high
reaches
contact
also
rough
and
of
the
the
the
the
on
If
the
original
Foreign
cover
matter
is
cartons
removed,
relays
are
not
in
collected
and
a
cause
to
place
on
be
the
trouble
installed
that
outside
in
immediately,
is
free
the
from
of
the
operation
case
they
moisture,
may
of
the
find
relay.
should
dust
its
be
and
way
stored
metallic
inside
in
chips.
when
their
the
12
GEK-49822
Immediately
made
to
ensure
calibrations
readjustment
Since
tests,
these
operating
the
relays.
acceptance
VISUAL
Check
agree
Remove
parts
the
tions
formed
INSPECTION
the
with
the
or
other
shorting
diagrams,
to
nameplate
contact
MECHANICAL
Top
Unit
(TOC)
upon
receipt
that
not
have
is
necessary,
conipanies
following
These
tests,
the
relay
at
requisition.
from
signs
bars
are
Figures
the
INSPECTION
no
damage
been
section
tests
the
discretion
stamping
its
of
physical
in
the
5
shorting
of
the
disturbed.
refer
use
includes
to
case
proper
to
ACCEPTANCE
relay
been
has
to
the
different
be
may
of
ensure
and
check
damage
location(s)
inclusive,
9,
bar.
an
INSPECTION
sustained
the
If
section
procedures
all
applicable
performed
the
user.
that
that
and
TESTS
in
examination
on SERVICING.
for
as
the
model
there
that
all
shown
as
that
and
AND
tests
part
number
are
screws
ACCEPTANCE
shipment
the
or
acceptance
that
the
of
and
broken
no
are
the
main
internal
by
the
and
test
may
rating
or
tight.
brush
TEST
that
indicates
and
installation
performed
be
installation
of
cracked
connec
is
should
the
the
Check
properly
be
relay
that
on
or
relay
molded
that
1.
2.
3.
4.
5.
Bottom
1.
2.
Target
1.
2.
3.
4.
disk
The
disk
The
magnet.
Both
The
position.
The
moving
is
at
Unit
rotating
The
The
contact
and
The
armature
Both
The
target
when
The
contacts
shaft
air
gaps
disk
the
(DIR)
Seal-in
contacts
the
target
end
should
be
should
should
contact
time
0
dial
shaft
should
gap
Unit/Instantaneous
and
contacts
should
should
release
should
play
centered
be
rotate
should
end
make
latch
have
should
free
freely
just
position.
should
play
be
0.015—0.025
should
at
into
button
approximately
be
0.005—0.015
the
foreign
air
in
of
and
touch
be
Unit
move
approximately
view
is
just
operated.
inch.
gaps
of
matter.
should
the
stationary
0.015—0.020
inch
on
the
freely
when
the
as
the
0.030
inch
both
return
inch.
low
operated
same
contacts
wipe.
the
contact
gradient
time.
electromagnet
itself
by
by
make
when
contact.
hand.
and
to
the
should
the
time
and
unlatch
drag
reset
dial
13
GEK-49822
DRAWOUT
Since
they
magnetic
relay
plug.
shorting
test
the
external
POWER
All
sinusoidal
the
will
Therefore,
use
freedom
relay;
RELAYS,
all
drawout
tested
be
effects
may
be
tested
This
plug
exercise
bars
allows
plug
in
of
circuitry.
REQUIREMENTS,
alternating—current-operated
waveforms
fundamental
be
affected
in
order
sine
from
wave
harmonics)
a
however,
electromagnets
waveforms.
GENERAL
relays
in
their
of
the
without
makes
the
case.
greater
greater
GENERAL
can
frequency,
by
the
to
of
current
any
relay
(such
as
in
service
cases
or
enclosure will
removing
connections
The
12XLA12A
testing
care,
applied
test
analyzed
be
it
alternating
since
follows
waveform.
and/or
cannot
using
time
be
tuned
overcurrent
operate
an
it
only
flexibility,
connections
devices
as
that
voltage.
expressed
in
equivalent
be
accurately
from
with
plug
test
affected
are
fundamental
a
alternating-current
current
The
as
circuits,
relays)
their
the
the
it
are
relays
purity
a
steel
may
requires
finite
R-L
cases,
duplicated
panel
relay
made
or
is
case.
by
and
also
be
CT
to
by
frequency.
frequency
properly,
of
the
number
RC
networks,
affected
it
using
does
both
(AC)
is
In
during
used.
shorting
the
plus
it
sine
for
by
recommended
this
way,
testing.
12XLA13A
a
not
disturb
Although
jumpers
relay
Since
harmonics
devices
is
wave
any
or
(relays)
essential
(i.e.,
particular
saturating
non—sinusoidal
and
that
any
A
test
any
this
and
the
non—
of
to
its
TARGET
target
The
When
the
0.2
used
minimum
ampere
minimum
The
seal-in
seal-in
take
a
There
will
(undesired)
necessary
adjustment.
time.
Pickup
1.
Connect
ammeter
to
2.
Close
3.
Increase
4.
Open
the
5.
Decrease
AND
control
unit.
screw
and
2.0
picked
SEAL-IN
and
with
control
tap.
tap
from
now
tap
to
Tap
Dropout
relay
and
amperes.
or
jumper
the
the
parallel
the
seal-in
trip
When
voltage,
screw
To
the
be
and
prevent
screws
load
current
up
current
UNIT
unit
coils
voltage,
is
change
left-hand
screws
place
Test
studs
box
the
contact
position.
has
operating
the
trip
the
tap
the
the
in
it
the
should
1
and
so
contact(s)
slowly
slowly
operating
an
the
target
coil
screw
screw
tap
holding
setting,
stationary
both
back
right—hand
never
2
(see
the
that
that
until
circuit
until
on
taps.
in
be
current
the
the
14
currents
and
current
should
the
stationary
allowed
internal
parallel
seal-in
of
seal—in
coil
seal-in
be
the
first
contact
Next,
left—hand
can
step
tapped
ranging
tap
ranges
placed
right-hand
remove
and
remove
contact
remain
to
connections
be
controlled
the
seal-in
unit
2;
the
unit
at
from
screw
from
in
the
place
contact.
picks
seal-in
drops
and
0.2
0.2
2
to
the
2.0
stationary
connecting
it
the
screw
from
in
both
diagram)
unit
up.
unit
out.
to
should
30
ampere
in
This
over
contact.
See
2.0
amperes
the
from
getting
taps
to
should
See
amperes.
2.0
be
tap.
contact
plug.
desired
procedure
at
a
range
a
Table
Table
amperes
in
set
at
of
the
out
the
source,
DC
of
XI.
remain
XI.
at
the
the
the
Then
tap.
other
is
of
same
0.1
in
GEK-49822
TIME
Rotate
close
Where
brush
in
its
With
sufficient
ensure
Current
OVERCURRENT
the
time
at
the
0
time—dial
the
contacts
in
or
out
by
support.
the
contacts
gap
between
approximately
Setting
UNIT
dial
means
TARGET
TAP
0.2
2.0
slowly
just
just
the
1/32
setting.
close
of
its
closing
stationary
inch
AND
and
wipe.
SEAL-IN
PICKUP
CURRENT
0.115
1.15
check
can
be
adjusting
at
TABLE
UNIT
-
0.195
-
1.95
by
adjusted
screw.
No.
contact
XI
OPERATING
means
of
by
This
0
time—dial
brush
CURRENTS
DROPOUT
CURRENT
0.05
0.55
a
running
screw
and
OR
OR
lamp
its
MORE
MORE
that
the
should
setting,
metal
the
contacts
stationary
be
held
there
backing
contact
securely
should
strip
just
be
to
The
minimum
determined
block
When
the
procedure
relay
screw
the
connecting
The
minimum
should
time
dial
means
driver
current
This
adjustment
between
Pickup
IBCG53/54
IBCG77/78
means
of
permits
obtained.
closed.
is
marked
tap
must
and
shorts
and
place
be
within
position.
of
the
blade
of
the
adjustment
relays.
relays,
the
any
The
Further
current
by
the
setting
be
plug.
current
spring
in
the
unit
available
variable
desired
control
at
position
in
amperes,
is
followed:
the
it
in
required
5%
of
If
adjusting
the
notches
can
also
tap
by
means
A
different
the
pickup
resistor
setting
spring
adjustment
which
changed
current
the
the
this
be
permits
settings.
the
of
the
as
shown
with
(1)
transformer
tap
marked
to
value
adjustment
ring.
around
brought
any
of
the
procedure
of
the
in
intermediate
is
prewound
of
this
time
plug
in
the
Remove
rotate
marked
the
into
desired
control
unit
the
phase-shifting
setting
15
overcurrent
in
Tables
relay
the
secondary
for
the
the
on
has
The
ring
edge.
agreement
applies
for
between
approximately
the
tap
III,
energized
connecting
desired
disk
the
been
can
By
setting
spring
to
any
current
is
seldom
unit
block.
IV
slowly
tap
disturbed,
be
turning
with
to
applies
the
circuit.
the
will
and
in
plug;
winding.
pickup
and
plate
turned
the
be
IBCG77/78
tap
various
6600
required;
V.
its
for
the
obtained
setting
with
close
The
case,
this
(2)
current.
to
any
it
by
ring,
tap
to
This
tap
if
its
tap
de-energizes
Remove
close
tap
can
be
inserting
setting
intermediately
the
relays.
is
adjustment
settings
the
contacts
it
contacts
plate
the
following
the
(3)
the
contacts
setting
restored
a
the
operating
employed.
IBCG51/52
For
adjusted
is
required,
on
this
the
tap
Replace
and
screw
and
the
also
to
be
just
is
by
by
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