GE IAV53E User manual

JNSTR
UCTJONS
VOLTAGE
RELAY
TYPE
IAV53E
GE
I-28824B
INSERT
BOOKLET
GEH-1814
The
Type-IAV53E
relay
has one
open
and
one
closed
contact,
and
is
similar
to the
Type-1AV53
relay
described
in
the
included
instructions,
GEH-1814,
except the
operating
coil
has no
taps
and
the
seal-in
units
are
omitted.
The
relay
is
adjusted
to
close
its left
contacts
at
25 volts
and
its
right
contacts
at
20
volts.
With
this
caHbration,
the
relay
coses
its
right
contacts
in
3
seconds
when
the
voltage
is
suddenly reduced
to
zero
(0).
A
typical
time—voltage
curve
is
shown
in
Figure
2.
The
internal
connections
are
shown
in
Figure
1.
BURDEN
VOLTS
AMPERES
WATTS
115
0.144
4.5
-J
•
OPERATING
-
COIL
#..
1
ø.O.
Figure
1 (K-6400143[21)
Internal-Connection
Diagram
These
instructions
do
not
purport
to
cover
all
details
or
variations
in
equipment nor
to
provide
for
every
possihie
contingency
to
be
met
in
connection
with installation,
operation
or
maintenance.
Should
further
information
he
desired
or
should
particular
problems
arise
that are
not
covered
sufficiently
for
the
purchaser’s
purposes,
the matter
should
he
referred
to
the
General
Electric
Company.
To
the
extent
required
the
products described
herein
meet
applicable ANSI,
IEEE
and
NEMA
standards:
hut
no
such
assurance
is
given
with
respect
to
local
codes
and ordinances
because
they
vary
greatly

GEI-28824
I.—
—
l
1
L
I’
-i:
‘..T;it.:
.1
4
1O
&O
-_
it&
I
Wfl
QO$TACZ2
—
—
———i——
—
——
—
—————
Figure
2
(K—6315689)
Typical
Time-Voltage
Curves
for
Type-IAV53L
Relays
(±
10%)
(10/90)
(200)
GENERAL
ELECTRIC
METER
AND
CONTROL
BUSINESS
DEPT..,
MALVERN,
PA
19355
2

GEH- 1814J
IAV51A
IAV52A
IAV53A
I AV
53
B
IAV53C
1AV530
IAV53K
IAV53L
IAV53M
IAV53N
JNSTR
(ICTIONS
VOLTAGE RELAYS
TYPES
GENERAL ELECTRIC

GEH-1814
TABLE
OF
CONTENTS
PAGE
DESCRIPTION
3
APPLICATION
3
RATINGSANDBURDENS
4
CHARACTERISTICS
6
CONSTRUCTION
7
RECEIVING,
HANDLING
AND STORAGE
8
RECEIVING
8
HANDLING
8
STORAGE
8
ACCEPTANCE
TESTS
8
VISUAL
INSPECTION
8
MECHANICAL
INSPECTION
9
ELECTRICAL TESTS
9
Drawout
Relays, General
9
PowerRequirements,General
10
Pickup
VoltageTest
10
Time-Voltage Test
10
INSTALLATION
11
INSPECTION
11
LOCATION
11
MOUNTING
11
CONNECTIONS
11
GROUND
CONNECTIONS
11
FIELD
INSTALLATION
TESTS
11
PERIODIC
CHECKS AND ROUTINE
MAINTENANCE
11
DISKANDBEARINGS
11
CONTACTCLEANING
12
SERVICINGANDADJUSTMENTS
12
TARGETANDSEAL-lN
UNIT
12
VOLTAGE
SETTING
12
TIME
SETTING
13
BEARINGANDCONTACTS
13
RENEWAL
PARTS
13
LISTOFFIGURES
14
2

GEH-t
814
VOLTAGE
RELAYS
TYPES
IAV51A
IAV52A
IAV 53A,
53B, 53C, 53D,
53K,
531,
53M,
and
53N
DESCRIPTION
Type
IAV
relays
are
single-phase,
voltage-operated,
induction-disk
relays
with adjustable
time
delay.
The
IAVS1A
and
IAV52A
are
overvoltage
relays.
The
IAV53A,
B,
C,
D,
K,
L,
M,
and
N
are
over-
and
undervoltage
relays.
APPLICATION
These
IAV relays
are
used
for
protection
against
alternating-current
(AC) overvoltage,
for
permissive
control
and
tripping
of
automatic
equipment,
and for
ground
detection
on
equipment
and feeders.
Figure
10
shows
the
typical
connections
for
the
application
of
an
IAVS1A
relay
for
protection against
overvoltage
in
a
three-phase
system.
The
IAV52A
can be
used
for
applications
requiring
two
trip-output
circuits.
The
operating-time
characteristics
for
these
relays
are
shown
in
Figure
12.
Figure
1
1
shows
the
connection
diagram
for
1AV53
over-
and
undervoltage
relays.
The
IAV53A
has
separate
normally-open and
normally-closed
contacts with
seal-in
units
on
each
contact.
A
typical
application
for
permissive
control
and
tripping
of
automatic
equipment
would
utilize
the
normally-open
contact
to
enable
the
machine
breaker-closing
circuit
when
normal
machine
voltage
is
present,
and
the
normally-closed
contact
to
operate
the
machine
breaker-trip
circuit
for
undervoltage
conditions.
The
operating-time
characteristic
for
the
IAV53A,
IAV53B,
IAVS3K
and
IAVS3L
relays
are
shown
in
Figure
13.
The
IAV53D
and
IAV53N
time
characteristics
are
shown
in
Figure
14.
The IAV53C
is
designed
for
ground-fault
protection,
and
would
normally
be
applied
with a
phase-to-neutral
connection,
giving
58%
of
rated voltage.
The
relay
is
adjusted
to
have a
10-second
operating
time
for
either
a
ground
on
the
connected
phase (0
volt
operates
the
UV
contact),
or
a
ground
on
another
phase (rated
volts
operates
the
OV
coil).
These
instructions
do
not
purport
to
cover
alt details
or
variations
in
equipment
nor
provide for
every
possible
contingency
to
be
met
in
connection
with
installation,
operation
or
maintenance.
Should
further
information
be
desired
or
should
particular
problems
arise
which
are
not
covered
sufficiently
for
the
purchaser’s
purposes,
the
matter
should
be
referred
to
the
General Electric
Company.
To
the
extent
required
the
products
described
herein
meet
applicable
ANSI,
IEEE and
NEMA
standards;
but
no
such
assurance
is
given
with
respect
to
local
codes
and
ordinances
because
they vary
greatly.
3

GE
H-I
814
RATINGS
AND
BURDENS
The
operating-circuit
ratings
avaIabIe
are shown
in
Table
I.
The
operating
coil
will
stand
rated
voltage
continuously
on
any
tap,
and
will
stand
tap
voltage continuously
on
the
taps
above
rated
voltage.
TABLE
I
VOLTAGE
RATINGS
RELAY
60Hz 50Hz
IAV51A 115
115
208
208
230
230
460
460
IAV52A 115
115
199
199
230
230
460
IAV5A
115
115
IAV53K
230
230
460
IAV53B
115 115
IAV53L
230 230
460
IAVS3C
115 115
IAVS3M
199
199
IAV53D
115
IAV53N
240
The
current-closing rating
of
the
contacts
is 30
amperes
for
voltages
not
exceeding
250
volts.
The
current-carrying
ratings
of
all
but
the
IAV53C
and
IAV53M
are
affected
by
the
selection
of
the
tap
on
the
seal-in
coil
as
indicated
in
Table II.
TABLE
II
TAP
FUNCTION
02
2.0
0.6
2.0
DC
Resistance
±
10%
8.3
0.24
0.78 0.18
Minimum
Operating
“I”
0.2 2.0
0.6 2.0
Carry
“I”
Continuously (amperes)
0.37
2.3
1.2
2.6
Carry3oampsfor
(seconds)
0.05
2.2
0.5
3.5
Carry
lOampsfor
(seconds)
0.45
20
5.0
30
60
Hz
‘1”
(ohms)
50
0.65
6.2
0.65
50
Hz
‘7”
(ohms)
42
0.54
5.1
0.54
4

GEH-1814
The tap
setting
used
on
the
seal-in
element
is
determined
by
the
current
drawn
by
the
trip
coil.
The
0.2
ampere
tap
is
for use
with
trip
coils
that
operate
on
currents
ranging
from
0.2
up
to
2.0
amperes at
the
minimum
control
voltage.
If
this
tap
is
used
with
trip
coils
requiring
more
than
two
(2.0)
amperes,
there
is
a
possibility
that
the
eight
ohm (8Q)
resistance
will
reduce
the
current
to
so
low a
value
that
the breaker
will be
tripped.
The
two-ampere
(2
.0
amp)
tap
should
be
used
with
trip
coils that
take
two amperes
or
more
at
minimum
control
voltage,
provided
the
tripping
current
does
not
exceed
30
amperes
at
the
maximum
control
voltage.
If
the
tripping
current
exceeds
30 amperes,
an
auxiliary
relay
should
be used,
the
connections
being
such
that
the
tripping
current
does
not pass
through
the
contacts
of
the
target/seal-in
coil
of
the
protective
relay.
The above
data
in
regard
to
contact
rating
apply
to
all
relays
covered
by
these
instructions
except
the
Types
IAV53B
and
IAV53D,
which
do
not
have seal-in
units.
In
these
cases,
the
contact
ratings
are limited
in
their
current-carrying
capacity
by
the
interrupting
ratings
as
shown below:
FUNCTION
VOLTS
AMPERES
AC
DC
Makeand
125
1.5
0.3t
interrupt
250
0.75
0.1Sf
at
600
0.00
0.00
f
Noninductive
Load
Representative
burdens
for
the
various
relay
types
are
given
in
Table
Ill.
TABLE
III
RELAY
VOLTAGE
TAPtf
VOLT-
POWER
TYPES
RATING
SETTING
AMPS
FACTOR
WATTS
60
-
CYCLE
BURDENS
115
140
1.3
0.34
0.4
120
1.8
0.35
0.5
IAV51A
105
2.4
0.34
0.7
&
93
3.1
0.33
0.9
IAV52A
82
3.9
0.32
1.2
70 5.4
0.31
1.7
64
6.6
0.31
2.1
55
9.2
0.35
3.2
IAV53A, 115 140
2.2
0.32 0.7
IAV53B,
120
3.0
0.30 0.9
IAV53D
105
4.0
0.31
1.2
IAV53K
93 5.4
0.31
1.7
IAV53L
82 7.0
0.32
2.2
&
70 9.9
0.34
3.4
IAV53N
64
12.0
0.36
4.3
55
17.0
0.39
6.6
IAV53C
&
53M
115
NO
TAPS
5.7
0.29
1.7
tt
Minimum
pickup
volts
5

GEH-1
814
TABLE
III
(continued)
RELAY
VOLTAGE
TAPtt
VOLT-
POWER
TYPES
RATING
SETTING
AMPS
FACTOR
WATTS
50- CYCLE
BURDENS
IAV51A
115
140
12
0.34
0.4
&
120
1.6
0.34
0.5
IAVS2A
105
2.1
0.34
0.7
93
2.8
0.38
1.9
82
16
0.36
1.3
70
5.1
0.34
1.7
64
6.2
0.34
2.1
55
8.2
0.34
2.9
IAV53A,
115
140
1.9
0.32
0.6
1AV538,
120
2.5
0.30 0.8
)AV53D 105
3.4
0.29
1.0
IAVS3K
93
4.6
0.31
1.4
IAVS3L
82
6.0
0.32
1.9
&
70
8.4 0.35
2.9
IAVS3N
64
12.9
0.29
3.7
55
13.2
0.35
4.6
IAV53C&53M
115
NOTAPS
4.8 0.32
1.6
ft
Minimum
pickup
volts
CHARACTERISTICS
The
Type-IAV51A
is
an
overvoltage
relay with single-circuit
closing
contacts
that
close
when
the
voltage
increases
to
pickup value,
as
set
on
the
tap
block.
The
time delay
in
closing
the
contacts
is
determined
by
the setting
of the
time
dial
at
the top of
the
shaft.
The
time/voltage
characteristics
of
this relay
are
shown
in
Figure
12.
The
IAV52A
relay
is
similar
in
every
respect
to the
IAV51A
relay,
except
that
it
has
additional
contacts
for
closing
a
second
circuit.
The time/voltage
characteristics
are
shown
in
Figure
12.
The
IAV53A
relay
is
an
under-
and overvoltage
relay
with
double-throw
contacts.
The
left-
hand contacts
close
as
the
voltage
increases
to
some
predetermined
value.
The right-hand
contacts
close
when
the
voltage decreases
to
some
lower
value.
Between
these
two
voltage
values,
both
contacts
are
open.
Time/voltage characteristics
are shown
in
Figure
13.
The
Type
IAV53B
relay
differs
from
the
Type
IAV53A
relay in
that it
does
not
have
seal-in
elements.
Time/voltage
characteristics
are
shown
in
Figure
13
The
Type
IAV53C
and
IAV53M
relays
are
similar
to
the
Type
IAV53A
relay
except
that
there
are
no
taps
on
the coil.
The
relay is
adjusted
to
close its
right
contacts
in
10
seconds
when
the
voltage
is
reduced
from
58% rated
voltage
to
zero
(0)
voltage;
with this
calibration
the
relay
closes its
left contacts
in
approximately
10
seconds
when
the
voltage
is
increased
from
58%
of
rated
voltage
to
rated
voltage.
These
relays
are
used
connected
line-to-ground
so
that
under
normal
conditions
the relay
receives
58%
of
rated
phase-to-phase voltage,
and
both
relay
contacts
are
open.
If
the
phase
to
which
the
relay
is
connected
is
grounded,
the
relay
voltage
goes
to
zero
(0)
and
the right-hand
contacts
close
in
10
seconds.
If
either
of
6

GEH-1814
the
other
two
phases
are grounded,
the
relay
voltage
increases
to
rated voltage
and
the
left-hand
contacts
close
in
approximately
10
seconds.
The
IAV53D
relay
is
similar
to the
Type
1AV538
relay
except
that
it
has a
shorter
time
curve.
Time/voltage
characteristics are shown
in
Figure
14.
The Type
IAV53K
is
similar
to
the
Type
IAVS3A,
IAV53L
to
IAVS3B,
IAV53M
to
IAVS3C
and
IAV53N to
IAV53D.
While
the
IAV53A,B,C,
&
D
are in
single-end
cases,
the
IAV53K,
L,
M,
and
N
relays
are
in
the
double-end
case,
with
contacts
connected
between
the
upper
and
lower
blocks
and
operating
coils
connected
to
both
blocks.
The
purpose
of
this
is
to
avoid
false
tripping
of
the
breaker
if
the
connecting
plugs
are
removed
and
subsequently
reinserted
with
the
relay
in
the
reset
position,
i.e.,
circuit-opening
contacts
closed.
Insertion
of
either
plug
causes
the
relay
to
pick
up;
both
plugs
must
be
in
place
before
the
contact
circuits
are
completed.
See
internal connections
Figures
1
-
8
for
coil and
contact
circuits,
and
Figures
10
and
11
for
external
connections.
CONSTRUCTION
These
relays
are
of
the
induction-disk
construction.
The
disk
is
actuated
by
a
potential
operating
coil
on
a
laminated
U-magnet.
The
disk
shaft
carries
the
moving
contact,
which
completes
the
trip
or alarm
circuit
when
it
touches
the
stationary
contact
or
contacts.
The
disk
shaft
is
restrained
by
a
spiral
spring
to
give
the
proper
contact-closing
voltage,
and
its
motion
is
retarded
by
permanent
magnets
acting
on
the
disk to
give
the
correct time
delay.
There
is
a
seal-in
unit
mounted
to
the
left
of
the
shaft
of
all
but
the
IAV53B,
D,
L
and
M
models,
as
shown
in
Figure
15.
This
unit
has its
coil
in
series
and
its
contacts
in
parallel
with
the
main
contacts,
such
that
when
the
main
contacts
close,
the
seal-in
unit
picks
up
and
seals
in. When
the
seal-in
unit
picks
up,
it
raises
a
target
into
view,
which
latches
up
and
remains
exposed
until
released
by
pressing
a
button
beneath
the
lower-left
corner
of
the
cover.
The
case
is
suitable
for
either
surface
or semi-flush
panel
mounting
and
an assortment
of
hardware
is
provided
for either
mounting.
The
cover
attaches
to
the
case,
and
carries
the
reset
mechanism
when one
is
required.
Two
of
the cover screws
have
provision
for
a
sealing
wire.
The
case has
studs or
screw
connections
at
both
ends
(IAVS3K,
L.
M,
or
N)
or
at
the
bottom
only
(IAV51
and
52A, and
IAV53A,
8,
C,
and
D)
for the
external
connections.
The
electrical
connections
between
the
relay
units
and
the
case
studs
are made
through
spring-backed
contact
fingers
mounted
in stationary
molded
inner
and
outer
blocks,
between
which
nests
a
removable
connecting
plug
(two plugs
for
the
IAV53K,
L,
M, and
N
models)
that
completes
the
circuits.
The outer
blocks,
attached
to
the
case,
have
the
studs
for the
external
connections,
and
the
inner
blocks
have
the
terminals
for the
internal
connections.
The relay
mechanism
is
mounted
in
a
steel
framework
called
the
cradle
and
is
a
complete
unit,
with
all
leads
being
terminated
at
the
inner
block.
This cradle
is
held
firmly
in
the
case
by a
latch
at
the
top and
bottom
and by
a
guide
pin
at
the
back
of
the
case.
The cases
and
cradles
are
so
constructed
that
the
relay
cannot
be
inserted
in
the
case
upside
down.
The
connecting
plug,
besides
making
the
electrical
connections
between
the
respective
blocks
of
the
cradle
and
case,
also
locks
the latch
in
place.
The
cover,
which
is
fastened
to
the
case
by
thumbscrews,
holds
the
connecting
plug
in
place.
To
draw
out
the
cradle
from
a
single-ended
case,
the
cover
must
first
be
removed.
Then
the
connecting
plug
can be
drawn
out.
In
so doing,
the
trip
circuit
is
first
opened,
then
the
7

GEH-1
814
voltage
circuits
are
opened.
After
the
connecting
plug
has
been
removed,
the
lower
latch
can
be
released
and
the
cradle
easily
drawn out.
To
replace
the
cradle,
the
reverse
order
should
be
followed.
The
cradle
can
be
drawn
out
from
a
double-ended
case
in
the
same
way,
except
that
two
connecting
plugs
must
be
drawn
out
first.
RECEIVING,
HANDLING
AND STORAGE
RECEIVING
These
relays,
when
not
shipped
as
a
part
of
a control
panel,
will
be
shipped
in cartons
designed
to
protect
them
against
damage.
Immediately
upon receipt
of
the
relay,
an
examination
should
be
made
for
any
damage
sustained during shipment.
If
injury
or
rough
handling
is
evident,
a damage
claim
should
be
filed
at
once
with
the
transportation
company,
and
the
nearest
General
Electric
Sales
Office
should
be notified
promptly.
HANDLING
Reasonable
care
should
be exercised
in unpacking
the
relay
in
order
that
none
of
the
parts
are
damaged
nor
the
adjustments disturbed.
STORAGE
If
the
relays
are
not
to
be
installed
immediately,
they
should
be
stored
in
their
original
cartons
in
a place
that
is
free
from
moisture,
dust, and
metallic
chips.
ACCEPTANCE TESTS
Immediately
upon
receipt
of
the
relay
an
INSPECTION
and
ACCEPTANCE
TEST
should
be
made to
make
sure
that
no
damage
has
been
sustained
in
shipment
and
that
the
relay
calibrations
have
not
been
disturbed.
If
no
pickup
value
for
the
left
contact
is
specified
on
the
requisition
for
the
relays
with
tap
blocks,
the
relay
is
shipped
with
the tap
plug
in
the
fifth
tap.
If
pickup
is
specified,
the
tap
plug
is
set
in
the
tap
corresponding
to
this
value.
If
a
specified
value
does
not
coincide
with
one
of
the
taps,
the
tap
plug
is put
in
the
tap
nearest
the
required
value
(the lower
tap
is
used
if
the
value
is
half
way
between
two
taps)
and
the
spring
is
adjusted
to
obtain
the
required
pickup.
VISUAL
INSPECTION
Check
the
nameplate
stamping
the
make
sure
that
the
model
number
and rating
of
the
relay
agree
with
the
requisition.
CAUTION
Every
circuit
in
the drawout
case
has
an auxiliary
brush.
It
is
especially
important
on
current
circuits,
and
other
circuits
with
shorting
bars,
that
the
auxiliary
brush
be
bent
high
enough
to
engage
the
connecting
plug or
test
plug
before
the
main
brushes
do.
This
will
prevent
ct
secondary
circuits
from
being
open.
8