ABB TD-5 Manual

ABB Automation Inc.
Substation Automation and Protection Division
Coral Springs, FL 33065
Instruction Leaflet
All possible contingencies which may arise during installation, operation or maintenance, and all
details and variations of this equipment do not purport to be covered by these instructions. If further
information is desired by purchaser regarding this particular installation, operation or maintenance
of this equipment, the local ABB Power T&D Company Inc. representative should be contacted.
Printed in U.S.A.
ABB
ABBABB
ABB 41-579.1N
Effective: September 1980
Supersedes I.L. 41-579.1M dated March 1980
Denotes Change Since Previous Issue
Type TD-5
Time Delay Relay
*
resistor
(
Rs
)
.
The silicon
power
regulator
(
Z
)
is
a
10
watt
Zener
diode mounted
on
an
aluminum
heat sink
.
The
series
resistor
(
Rs
)
is
a
3
‘
/
2
inch
resistor
which
is
tapped
for
24
/
32
volt
dc and
48
/
125
volt dc
relays
.
CAUTION
:
Before
putting
relays
into service
,
operate
the
relay
to
check
the
electrical
connec
-
tions
.
Close
the
red
handle
switch
last when
plac
-
ing
the
relay
in
service
.
Open
the red handle
switch
first
when
removing
the
relay
from
service
.
°
APPLICATION
Rheostat
and
Scale
Plate
The rheostat
(
T
)
provides
a
variable
resistance
for
the
R
-
C
time
delay
circuit
.
It
is
of
wire
-
wound
construction
,
which
minimizes resistance
change
with
temperature
.
Do
not
remove
the knob
from
the rheostat
shaft
,
since
it
is
not
easy
to
replace
the
knob
in
the calibrated
position
.
The
timing
scale
is
non
-
linear
as
explained
in
the section
under
Printed
Circuit
.
The
type
TD
-
5
relay
is
used
in
timing
applications
where
accuracy
,
repeatability
and
fast
reset
are
required
.
Its
principal
use
is
in
time
delayed
distance
relaying
and
in
breaker failure
timing
applications
.
It
is
a
dc
relay
capable
of
direct
application
to
station
batteries
.
It
covers
0.05
to
30
seconds
in
4
different
ranges
.
For
dual
independent
timing
refer
to
TD
-
52
relay
,
I
.
L
.
41
-
579.3
.
Potentiometer
The
potentiometer
(
P
)
,
provides
a
biasing
voltage
which
keeps
the silicon
controlled
rectifier
(
SCR
)
turned
off
until
the
capacitor
voltage
reaches
the
potentiometer
brush
voltage
.
It
is
of
wire
-
wound
construction
and
has
a
locking
nut
which
should
not
be
loosened
unless
the
relay
is be
-
ing
re
-
calibrated
.
CONSTRUCTION
The
type
TD
-
5
relay
consists
of
a
reference
voltage
circuit
,
a
rheostat
(
T
)
and
scale
plate
,
a
voltage
biasing
potentiometer
(
P
)
,
a
printed
circuit
containing
static
timing
components
,
an
output
telephone
relay
(
TR
)
,
and
an
indicating
contactor
switch
(
ICS
)
.
An
auxiliary relay
(
TX
)
is
supplied
on
some
types
to
override bounce
of
the
initiating
contact
.
Printed
Circuit
The
printed
circuit contains
a
diode
(
Dj
)
which
protects
the static
components
in
case
the
relay
is
connected
with
reverse
polarity
,
a
limiting
timing
resistor
(
RjJ
,
timing
capaci
-
tor
(
C
)
,
a
parallel
resistor
(
Rp
)
which
makes
the
calibrating
scale
non
-
linear
,
and
a
silicon
controlled
rectifier
(
SCR
)
.
The
printed
circuit
also contains
a
diode
(
D
2
)
to
reverse
bias
Reference
Voltage
Circuits
The
reference
voltage
circuit
provides
a
fixed
supply
voltage
to
the
R
-
C
time
delay
circuit
and
protects
the
static
components
from
high
voltages
.
It
consists
of
a
silicon
power
regulator
and
a
series
Courtesy of NationalSwitchgear.com

41-579.1N Type TD-5 Time Delay Relay
2
RHEOSTAT
KNOB
KNOB LOCKING
SCREW
MODULE
TERMINAL
P
LOCK
NUT
Fig
.
1
.
Type
TD
-
5
Relay
Without
Case
.
Courtesy of NationalSwitchgear.com

Type TD-5 Time Delay Relay 41-579.1N
3
refry
is connected
around
the
contact
of
the
in
-
itiating
relay
to
maintain
V
0
liag
.
fi
10
the
timing
module
of
the
relay
if
the
contact
of
the
initiating
relay
bounces
.
Refer
to
Fig
.
5
.
A
resistor
and
diode
arc
connected
across
th
.
fi
coil
of
the
TX
relay
io
protect
the
static
com
-
ponents
from
the
inductive
voltage
kicks
associated
with
the
telephone
relay
{
TX
)
coil
.
A
resistor
is
connected
in
series
with the coil
of
the
TX
relay
for
use
on
48
/
125
volts
.
This resistor
is
jumpered
for
48
VDC
operation
.
Operate
time
is
9
ms
-
48
VDC
,
6
ms
-
125
V
DC
,
Dropout
time
is
1
Sms
.
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A
*
Indicating
Contactor
Switch
(
ICS
)
The
inditating
contactor
switch
is
a
small
!
dc
operated
clapper
type
device
.
A
magnetic
ar
*
mature
,
10
which leaf
-
spring
mounted
contacts
STC
attached
,
is
attracted
,
to
the
magnetic
core
upon
energization
of
the
swiidi
.
When
ihe
switch doses
,
the
moving
contacts
bridge
two
stationary
con
-
tacts
,
completing
ihe
trip
circuit
,
Also
,
during
this
operation
two
fingers
on
the
armature
deflect
a
spring
located
on
the
front
of
the switch
,
which
allows
the
operation
indicator
target
to
drop
.
The
target
is
.
reset
from
the outside
of
the
case
by
a
push
rod
located
at
the bottom
of
the
cover
.
The
front
spring
,
an
addition
to
holding
the
target
,
provides
restraint
for
the
armature
and thus
ggfiE
.
rols the
pickup
value
of
the
switch
.
m
(
WASH
fr
$
,
2
.
tolnFTttJ
-
Srtlfl
-
f
&
iEfc
or
Typ
#
TO
-
5
fl
-
filiy
.
SCR
,
a
resistor
(
R
^
)
end diode
(
Dj
)
to
pro
*
feci
the
static
components
from
the
inductive
voltage
kick
associated with
the
telephone
relay
coil
,
andi
series
diodes
(
D
4
,
Dj
,
and
Dfr
)
which
compensate
for
the
forward
voltage
drop
through
SCR
and
D
;
and
verier
re
-
ference
variations
.
OPERATION
Telephone
Relay
|
TR
)
The
telephone
relay
(
JR
)
is
energized by
SCR
at
Use
conclusion
of
the
time
delay
.
The
cmj
i
&
energized
by
at
least three
times
pick
-
up
wattage
to
insure
positive
contact
operation
.
The
contacts
are
made
of
palladium
and
are
suitable
for
circuit
breaker
trip
duty
,
as
proven
by
many
years
of
ex
-
perience
in
other
relays
.
Two
sets
of
transfer
con
-
tacts
arc
provided
to
give
a
flexible
crip
circuit
arrangement
.
Operation
of
the
TD
-
5
relay
occurs
when
a
silicon controlled
rectifier
{
SCR
)
switches
from
a
non
-
conducting
state to
a
conducting
state
.
In
Llhe
non
-
conducting
state
,
the
SCR
acts
as
an
opened
switch
to
prevent
energization
of
ihe
telephone
relay
(
TR
)
,
but
in
the
conducting
slate
acts
as
a
dosed switch
to connect
Lhe
telephone
relay
to
the
dc
source
.
To
switch
the
SCR
from
a
non
-
conducting
state to
a
conducting
stale
requires
that
3
maximum
of
20
microamperes
(
low
in
the
gate
uf
the
SCR
-
This
Cilfrent
is
produced
by
the
-
difference
in
voltage
across
the
capacitor
(
C
)
ar
,
d
the
brush
,
of
the
potentiometer
(
P
)
.
Telephone
Relay
(
TX
)
The
telephone
relay
(
TX
)
is
energized
by
the
application
of
a
dc
voltage
to
the
relay
.
Because
of
its
slow
dropout
characteristic
a
contact
oftlic
TX
When
dc
voltage
is first
applied
to
the
relay
,
.
Courtesy of NationalSwitchgear.com

41-579.1N Type TD-5 Time Delay Relay
4
Fig
.
3
.
Timing
Variation
with
Temperature
Changes
.
voltage
instantaneously
appears
across
the
poten
-
tiometer
brush
but
is
delayed
in
building
up
across
the
capacitor
in
accordance
with
the
R
-
C
time
constant
of
the
circuit
.
As
long
as
the
capacitor
voltage
is
less
than
the
potentiometer
brush
voltage
,
a
reverse
voltage
appears
across
the
diode
D
2
,
and
the
SCR
to
keep
the
silicon
con
-
trolled
rectifier
(
SCR
)
biased
off
.
When
the
capacitor
voltage
reaches
the
potentiometer
brush
voltage
plus
approximately
one
volt
(
forward
voltage
drop
across
SCR
and
D
2
)
,
gate
current
will
flow
to
the
silicon
controlled
rectifier
(
SCR
)
.
This
current
switches
the
SCR
to
a
conducting
state
to
allow
the
telephone
relay
(
TR
)
to
pickup
.
rate
is
not
a
linear
function
of
rheostat
setting
,
since
Rp
gives
a
parallel
resistive
path
.
This
has
the
effect
of
expanding
the
scale
for
short
times
and
thereby
permitting
more
accurate
settings
.
CHARACTERISTICS
Time
Delay
Range
and
Voltage
Rating
Voltage
Rating
(
Volts
dc
)
Time
Delay
Range
(
Seconds
)
24
/
32
48
/
125
.
05
-
0.4
.
05
-
0.4
.
05
-
0.4
250
The
SCR
latches
on
when
it
switches
and
can
be
reset
only
by
removing
voltage
from
terminals
8
and
9
.
If
a
trip
coil
supervisory
indicator
lamp
is
used
,
when
the
timer
is
used
with
a
fault
detector
to
trip
a
breaker
,
a
breaker
"
a
”
contact
must
be
connected
between
terminal
8
of
the
relay
and
negative
.
.
05
-
1.0
.
05
-
1.0
.
05
-
1.0
24
/
32
48
/
125
250
0.2
-
4.0
0.2
-
4.0
0.2
-
4.0
24
/
32
48
/
125
250
1.5
-
30
1.5
-
30
1.5
-
30
24
/
32
48
/
125
The
rate
at
which
the
capacitor
charges
is
determined
by
the
rheostat
setting
.
The
charging
250
Courtesy of NationalSwitchgear.com

Type TD-5 Time Delay Relay 41-579.1N
5
Battery
Drain
32
Volts
dc
48
Volts
dc
125
Volts
dc
250
Volts
dc
24
Volts
dc
0
0
0
00
STAND
-
BY
:
OPERATING
:
180
MA
80
MA
500
MA
420
MA
270
MA
NOTE
:
TD
-
5
with
TX
Relay
has
an
extra
operating
drain
of
63
MA
at
48
or
125
VDC
.
ting
for
settings
of
0.2
seconds
or
less
.
For
settings
above
0.2
seconds
,
this
accuracy
will
be
+
2
%
.
Voltage
Rating
Over
The
Temperature
Range
The
relay
can
stand
110
%
voltage
continuously
over
a
temperature
range
of
-
40
°
C
.
to
+
70
°
C
.
(
2
)
Consecutive
Timings
Incomplete
capacitor
discharge
will
cause
changes
in
time
delay
.
These
changes
are
a
func
-
tion
of
discharge
rate
.
Timing
accuracy
for
slow
repetitions
will
be
per
Table
I
.
Reverse
Polarity
Diode
(
Dj
)
limits
reverse
voltage
of
the
static
components
to
less
than
one
volt
dc
,
so
that
no
damage
is
done
to
the
circuit
by
connecting
the
relay
with
reverse
polarity
.
However
,
the
relay
will
,
of
course
,
not
operate
under
this
condition
,
and
series
resistor
(
R
§
)
may
over
-
heat
if
reverse
voltage
is
applied
for
approximately
15
minutes
or
more
.
Table
I
Delay
Between
Readings
Accuracy
,
as
Percent
of
Setting
Relay
Rating
Reset
Time
TR
drop
-
out
time
=
0.1
sec
.
or
less
.
TR
drop
-
out
time
of
Relay
with
TX
contact
is
an
additional
15
msec
.
at
least
3
seconds
at
least
5
seconds
at
least
5
seconds
.
05
-
1.0
seconds
0.2
-
4.0
seconds
1.5
-
30
seconds
±
2
%
+
2
%
+
2
%
Timing
accuracy
for
fast
repetitions
will
be
per
Table
II
.
Discharge
of
timing
capacitor
:
the
discharge
of
C
is
essentially
instantaneous
,
the
R
-
C
time
constant
through
P
being
less
than
20
milliseconds
,
in
most
cases
.
However
,
the
discharge
path
through
P
is
limited
by
silicon
voltage
drops
through
SCR
and
D
2
,
totaling
approximately
one
volt
.
Therefore
,
C
discharges
rapidly
through
P
down
to
about
one
volt
and
then
more
slowly
through
Rp
down
to
zero
volts
.
Table
II
Delay
Between
Readings
Accuracy
,
as
Percent
of
Setting
Relay
Rating
.
05
-
1.0
seconds
0.2
-
4.0
seconds
1.5
-
30
seconds
instantaneous
instantaneous
approx
.
V
2
sec
.
+
4
%
+
4
%
+
4
%
Accuracy
The
accuracy
of
the
time
delay
depends
upon
the
repetition
rate
of
consecutive
timings
,
the
supply
voltage
,
and
the
ambient
temperature
.
Self
-
heating
has
a
negligible
effect
on
the
time
ac
-
curacy
.
(
3
)
Supply
Voltage
Changes
in
supply
voltage
,
between
80
%
and
110
%
of
nominal
,
cause
time
delay
variations
of
no
more
than
+
3
milliseconds
for
settings
of
0.3
seconds
or
less
,
and
no
more
than
+
1
%
for
settings
above
0.3
seconds
.
(
1
)
Nominal
Setting
The
first
time
delay
,
as
measured
with
the
test
circuit
shown
in
Figure
4
,
taken
at
25
°
C
.
and
rated
voltage
,
will
be
within
four
milliseconds
of
1
its
set
-
(
4
)
Ambient
Temperature
Changes
-
in
ambient
temperature
cause
changes
in
time
delay
.
This
variation
in
time
Courtesy of NationalSwitchgear.com

41-579.1N Type TD-5 Time Delay Relay
6
delay
is
a
direct
function
of
capacitance
change
with
temperature
.
Typical
variation
of
time
delay
with
temperature
is
shown
in
Figure
3
.
For
detailed
FT
case
information
refer
to
I
.
L
.
41
-
076
.
ADJUSTMENT
AND
MAINTENANCE
SETTINGS
The
proper
adjustments
to
insure
correct
operation
of
this
relay
have been made
at
the
fac
-
tory
and
should
not
be disturbed
after
receipt
by
the
customer
.
In
particular
,
do
not
remove
knob
from
rheostat
shaft
and
do
not
loosen
poten
-
tiometer
lock
nut
.
Time
delay
is selected
by
adjusting
rheostat
,
T
.
O
For
zone
2
distance
applications
,
the
timer
setting
should
be
sufficient
to
allow
relays
and
breakers
beyond
the
next
bus
to
clear
the
fault
.
Also
,
it
should
be
set
to
allow
successful breaker
-
failure
clearing
without
it
operating
.
This
usually
requires
a
setting
of
approximately
0.25
seconds
.
Acceptance
Test
A
timing
check
at
minimum and
maximum
settings
is
recommended
to
insure
that
the
relay
is
in
proper
working
order
.
A
recommended
test
cir
-
cuit is shown
in
Figure
4
.
When
testing
the
TD
-
5
with
a
TX
telephone
relay
make
the
dotted
con
-
nection
as
shown
in
Figure
4
.
The
neon
lamp
will
light
if
the
TX
relay
is
operating properly
.
O
Zone
3
timing
must
coordinate
with
remote
zone
2
timing
.
A
typical
setting
is
0.5
seconds
.
O
Breaker failure
timing
is
set
to
assure
normal
fault
clearing
and
fault
detector
reset
plus
2
to
3
cycles margin
.
0.1
to
0.2
second
settings
are
typical
.
Routine
Maintenance
All
contacts
should
be cleaned
periodically
.
A
contact
burnisher
S
#
182
A
836
H
01
is
recommend
-
ed
for
this
purpose
.
The
use
of
abrasive
material
for
cleaning
contacts
is
not
recommended
,
because
of
the
danger
of
embedding
small
particles
in
the
face of
the
soft
silver
and
thus
impairing
the
con
-
tact
.
The
correct
tap
on
series
resistor
,
R
§
,
should
be
selected
for
the
supply
voltage
being
used
.
Indicating
Contactor
Switch
(
ICS
)
No
setting
is
required
on
the
ICS
unit
except
the
selection
of
the
0.2
or
2.0
ampere
tap
setting
.
This selection is
made
by
connecting
the
lead
located
in
front
of
the
tap
block
to
the
desired
set
-
ting
by
means
of
the
connecting
screw
.
Trouble
Shooting
Procedure
Use
the
following
procedure
to
locate the
source
of
trouble
if
the
TD
-
5
is
not
operating
cor
-
rectly
.
INSTALLATION
The
relays
should
be
mounted
on
switchboard
panels
or
their
equivalent
in
a
location
free
from
dirt
,
moisture
,
excessive
vibration
,
and
heat
.
Mount
the
relay
vertically
by
means
of
the
four
mounting
holes
on
the
flange
of
semi
-
flush
moun
-
ting
or
by
means
of
the
rear
mounting
stud
or
studs
for
projection
mounting
.
Either
a
mounting
stud
or
the
mounting
screws
may
be
utilized
for
grounding
the
relay
.
The
electrical
connections
may
be
made
directly
to
the
terminals
by
means
of
screws
for
steel
panel
mounting
or
to
the terminal
studs furnished
with
the
relay
for
thick
panel
mounting
.
The
terminal studs
may
be
easily
removed
or
inserted
by
locking
two
nuts
on
the
stud
and then
turning
the
proper
nuts
with
a
wrench
.
1
.
Inspect
all
wires
and
connections
,
paying
par
-
ticular
attention
to
telephone
relay
and
printed
circuit
terminals
.
2
.
Check
the
reference
voltage
circuit
.
This is
done
by
measuring
the dc
voltage
across
the
silicon
power
regulator
,
Z
.
Connect
the dc volt
-
meter
positive
terminal
to
the
rear
terminal
of
R
<
5
and
the
negative
terminal
to
relay
ter
-
minal
8
.
Apply
rated
voltage
per
the
test
circuit
diagram
,
Figure
4
.
The
Zener
voltage
should
be between
11.0
and
14.0
volts
for
24
/
32
volt
relays
,
between
21.5
and
25.5
volts
for
48
/
125
volt
relays
,
and between
50
and
59
volts
for
250
volt
relays
.
Courtesy of NationalSwitchgear.com

Type TD-5 Time Delay Relay 41-579.1N
7
minimum
scale
marking
is
obtained
.
Then
,
align
the
knob
for
this
delay
and
tighten
the
knob
set
-
screw
securely
.
Pause
several
seconds
between
readings
for
all
delays
above
.
05
seconds
.
See
sec
-
tion
under
Accuracy
for
discussion
of
this
.
3
.
Scale
Plate
Calibration
,
New
Scale
Plate
If
it
is
necessary
to
replace
the
potentiometer
(
P
)
or
the
printed
circuit
,
the
relay
should be
recalibrated with
a
new
scale
plate
.
Use
the
follow
-
ing
procedure
:
(
a
)
.
With
the
knob
off
the
shaft
,
set
the
rheostat
(
T
)
at
maximum
.
(
b
)
.
Adjust
P
so
that
the
times
are
5
%
to
10
%
longer
than
the
maximum
scale
marking
.
(
c
)
.
Set
the
rheostat
(
T
)
at
minimum
and
check
that
times
are
less
than
or
equal
to
the
minimum
scale
marking
.
If
not
,
adjust
P
slightly
to
reduce
times
.
Tighten
lock
nut
on
P
.
(
d
)
.
Place
the
knob
on
the
rheostat
shaft
in
such
a
position
that
the
times
are
symmetrical
with
respect
to
the scale
plate
marking
.
Tighten
the
knob
set
-
screw
and
mark
calibration
lines
on
the
scale
plate
.
When
striking
calibration
lines
for
delays
above
0.5
seconds
,
pause
at
least
3
seconds
between
readings
.
See
section
under
Accuracy
for
discussion
of
this
.
4
.
Indicating
Contractor
Switch
(
ICS
)
Close
the
main
relay
contacts
and
pass
suf
-
ficient
dc
current
through
the
trip
circuit
to
close
the
contacts
of
the
ICS
.
This value
of
current
should
be
not
greater
than
the
particular
ICS
tap
setting being
used
.
The
operation
indicator
target
should
drop
freely
.
The
contact
wipe
should
be
1
/
64
"
to
3
/
64
”
between
the
bridging
moving
contact
and
the
ad
-
justable
stationary
contacts
.
The
bridging
moving
contact
should
touch
both
stationary
contacts
simultaneously
.
3
.
Check
the
timing
capacitor
voltage
and
the
potentiometer
brush
voltage
(
between
printed
circuit terminal
3
and
relay
terminal
8
)
with
a
cathode
ray
oscilloscope
or
a
high
resistance
dc
voltmeter
.
It
is
necessary
to
scrape
varnish
from
the
capacitor positive
terminal
in
order
to
make
a
connection
at
this
point
.
The
brush
voltage
,
which is
constant
until
the
telephone
relay
trips
,
should
be
approximately
one
half
the
reference
voltage
.
The
capacitor
should
gradually change
to
the
potentiometer
brush
voltage
,
plus
approximately
one
volt
for
silicon
junction
forward
voltage
drops
through
SCR
and
D
2
-
4
.
If
reference
voltage
,
capacitor
voltage
,
and
potentiometer
voltage
all
appear
to
behave
correctly
,
the
SCR
may
be
the
cause
of
trouble
.
The
anode
to
cathode
voltage
,
as
measured
between
printed
circuit terminals
4
and
3
,
should
be
approximately
one
-
half
the
reference
voltage
until
capacitor
voltage
reaches
the
brush
voltage
,
at
which time
the
anode
to
cat
-
hode
voltage
should
drop
to
approximately
one
volt
.
Calibration
Use
the
following
procedure
for
calibrating
the
relay
if
the
relay
adjustments
have
been
disturbed
.
This
procedure
should
not
be
used
until
it
is
ap
-
parent
that
the
relay
is
not
in
proper
working
order
.
Before
calibrating
,
follow
the
Trouble
Shooting
Procedure
to
locate
the
source
of
trou
-
ble
.
1
.
Telephone
Type
Relay
Adjustment
Adjust
the
armature
gap
on
the
telephone
type
relay
to
be
approximately
.
004
inch
with the
ar
-
mature
closed
.
This is done
with
the
armature
set
-
screw
and
lock
-
nut
.
Also
,
adjust
contact
leaf
springs
to
obtain
at
least
.
015
inch
gap
on
all
con
-
tacts
and
at
least
.
010
inch follow
on
all
normally
open
contacts
and
at
least
.
005
inch
follow
on
all
normally
closed
contacts
.
2
,
Rheostat
Knob
Adjustment
,
Same
Scale
Plate
If
it
is
necessary
to
replace
the
rheostat
(
T
)
or
the
silicon
power
regulator
(
Z
)
,
the
relay
may
be
recalibrated
with the
same
scale
plate
,
in
most
cases
.
This
is
done
by rotating
the
rheostat
shaft
,
without knob
,
until
a
time
delay
equal
to
the
RENEWAL
PARTS
Repair
work
can
be
done
most
satisfactorily
at
the
factory
.
However
,
interchangeable
parts
can
be
furnished
to
customers
who
are
equipped
for
doing
repair
work
.
When
ordering
parts
,
always give
the
complete
nameplate
data
.
Courtesy of NationalSwitchgear.com

41-579.1N Type TD-5 Time Delay Relay
8
(
A
)
TMC
CONNECTION
OF
THE
LIGHT
IS
USED
WHEN
TESTING
A
TD
*
5
WITH
THE
TX
(
TELEPHONE
BELAY
)
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r
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r
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-
1
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1
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M
|
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TUT
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STAAT
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TIME
*
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UMIhU
.
r
*
*
T
TIC
*
187
A
527
188
A
016
Fig
.
A
.
Test
Circuits
for
Type
TD
-
5
Relay
.
Fig
.
5
.
Internal
Schematic
of
TD
-
5
with
Telephone
Relay
(
TX
)
.
Courtesy of NationalSwitchgear.com

Type TD-5 Time Delay Relay 41-579.1N
9
TABLE
OF
REPLACEABLE
PARTS
RELAY
CHARACTERISTIC
CIRCUIT
SYMBOL
STYLE
NlfM
HER
OESCREPTION
DC
VOL
T
5
TIUE
RANGES
24
/
32
«
/
125
R
&
All
fle
&
tscor
,
40
W
.
^
ccs
,
45
+
5
^
oh
m
&
.
cents
!
tap
Resistor
,
40
watc
*
.
550
*
5
%
shins
,
tap
at
95
obrns
R
-
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,
40
wa
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i
^
n
250
D
~
5
E
;
ohms
]
S
4
A
«
4
H
0
S
3
&
7
A
32
LHDL
J
&
55
&
53
m
250
All
24
/
32
All
Z
Zeaer
Djgdea
L
2
Si
2
£
77
Er
t
0
W
&
ns
,
13
Vedca
Diode
,
3
^
£
9663
,
10
W
*
ttfiP
24
Volte
-
Eene
*
Diode
P
11
^
29993
,
1.0
Wafts
,
56
Vp
]
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&
SiiitiJi
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4
S
1
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200
Volts
,
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Amp
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Diode
1
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3
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53
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Fa
*
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,
3
Watt
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40
K
Rfoecfltai
,
4
Watt
.
1
OQK
ftheost
&
t
,
4
WaLt
,
JQQK
Rheostat
,
4
Watt
.
20
K
Resjatotj
L
/
2
W
*
tt
.
m
i
1
ft
.
Resa
&
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,
1
/
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Walt
.
3
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;
\
%
Resistor
.
3
WfitCE
,
3
K
±
5
ft
HaBiBiET
.
1
/
2
w
>
altr
5.6
K
=
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%
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&
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.
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=
1
%
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&
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&
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05
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.
4
TanlftLum
Capacitor
,
22
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35
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,
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.
22
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,
35
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CatsBciLor
,
22
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>
35
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Capacifcu
,
22
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1
50
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>
JP
22
LL
£
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7
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paJa
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-
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,
.
22
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Resistor
.
1
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2
wait
.
2
S
7
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±
Lft
Telepiiwie
Relay
,
3
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Telephone
Relay
,
L
25
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750
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