ABB CIRCUIT SHIELD 49/50/51 User manual
Jl
1111
,.,1,1,
IB
7.2.1.
7-4
Issue D
INSTRUCTIONS
Overcurrent Relay for Motor Protection
CIRCUIT
9
SHIELD
en
TYPES
49/50/51,
49/50,
49
Catalog
Series
214
Standard
Case
Catalog
Series
414
Drawout
Test
Case
m1.2.1.1-4
Page2
Motor
Overcurrent
Relay
TABLE
OF
CONTENTS
Introduction.........................Page 2
Precautions...........................
Page 2
PlacingRelay into Service....Page 3
Application Data..................Page 4
Specifications.......................
Page 6
Testing.................................
Page
11
Obsolete Units......................Page
14
INTRODUCTION
These instructions contain the information required to properly install, operate, and test the
ABB
Circuit-Shield™ Type
49/50/51, Type 49/50, and Type 49 MotorOvercurrent Relays.
The relay is housed
in
a case suitable for conventional semiflush panel mounting. All connections to the relay are made
at
the
rear
of
the case
and
are clearly numbered. The 414 series relay provides totally drawout construction with integral test
facilities. Current transformer shorting is accomplished by a direct-acting spring
and
blade assembly upon removal
of
the
relay from its case. Sequenced disconnects prevent nuisance tripping during withdrawal or insertion
of
the relay
if
the
normally-open contact
is
used
in
the application. The 214 series relay is
of
partial drawout construction with the input
transformers remaining
in
the case upon withdrawal
of
the lower circuit board.
All settings are made
on
the front panel
of
the relay behind a removable clear plastic cover. The targets are resetby means
of
a push-buttonextending through the relay cover.
PRECAUTIONS
The following precautionsshouldbe taken when applying these relays:
I.
Incorrect wiring may result in damage. Be sure wiring agrees with the connection diagram for the particular relay before
energizing.
2.
Apply only the rated voltage marked
on
the relay front panel. Forunits rated for
de
control power, the proper polarity must be
observed.
3.
A tripping circuit must be interrupted by
an
"a" contact to remove high current from the output circuit. Do not exceed contact
ratings.
4. When applying high input currents during testing, interrupt the current immediately after the relay operates to prevent thermal
stress.
5.
High voltage insulation tests are not recommended. See section on testing for additional information.
6.
The entire circuit assembly
of
therelay is removable. The unit should insert smoothly. Do not use excessive force.
7. Follow test instructions to verify that the relay is
in
proper working order.
8.
When handling this relay, take all the necessary precautions to prevent damage from static electricity. This relay contains
static sensitive components which could be damaged without proper grounding.
.A ATTENTION
~
OBSERVE
PRECAUTIONS
~
._
.&.
FOR
HANDLING
.&f.a...'
ELECTROSTATIC
SENSITIVE
DEVICES
CAUTION: since troubleshooting entailsworking with energizedequipment, care shouldbe taken to avoidpersonal shock.
Only competent technicians familiar with
good
safetypractices shouldservice these devices.
Motor Overcurrent Relay
PLACING
1HE
RELAY INTO SERVICE
1.
RECEIVING. HANDLING. STORAGE
IB 7.2.1.7-4
Page3
Upon receipt
of
the relay (when not included
as
part
of
a switchboard) examine for shipping damage.
If
damage or loss is evident file a claim at
once and promptly notify the nearestAsea Brown Boveri office. Use normal care in handling to avoid mechanical damage. Keep clean and
dry.
2. INSTALLATION
Mounting- The outline dimensions and panel drilling and cutout information is given in Fig.
3.
Connections Internal connections are shown in Figure 2. Note that the external connections will be different
for
the 214 series
and
414 series
units. Typical external connections are shown in Figure
1.
These relays have metal front panels which are connected through printed circuit board runs and connector wiring to a terminal
at
the rear
of
the relay case. The terminal is marked "G".
In
all applications this terminal should be wired
to
ground.
FAST-RESET terminals
15
and
16
are provided for use during testing or for special applications. A momentary contact closure will fully
reset the relay overload memory. CAUTION: the overload (49) unitwill be inoperative
when1..'Ver
terminals 15
and
16
are connected;
therefore,
if
a contact is used,
it
mustprovide only a momentary closure.
Control power polarity must be observed for relays rated for use on de control. For relays rated for ac control voltage,
it
is preferred (but not
required) that the grounded end
of
the supply be connected to terminal 8 and the hot side to tenninal 7.
All units are supplied with an external power resistor mounted on the back
of
the relay and wired to tenninals 9 and
10.
Tilis resistor must be
connected for proper operation.
Ooerating Mode Selector Plug:
An internal RESET SELECT selector plug is provided
to
choose whether the relay output contacts will either Iatch(HAND reset) or reset
automatically (SELF reset) after the relay has operated. All units are shipped with the contacts set in the
self
reset mode.
If
the contacts are set
in the hand reset mode, the output contacts will latch and must be manually reset by depressing the target reset push button located on the front
panel
of
the relay.
3.
SETTINGS
CURRENT PICKUP TAPS
The tap block, located on the upper part
of
the front panel, is the "pickup" or "ultimate trip setting" for the OVERLOAD (49) unit. The
settings are marked in ct secondary amperes.
By means
of
the screwdriver VERNIER adjustment next to the tap block, the relay effectively has a continuous range. With the vernier turned
fully counterclockwise, pickup corresponds to the tap setting. As the vernier is turned clockwise, pickup increases, until
at
the fully clockwise
position, pickup corresponds to the next highest tap value. With the tap pin in the highest position, the vernier also gives additional range
equivalent to one tap position.
The tap pin may be moved with the relay in service. When the pin is pulled out, pickup switches
to
the maximum tap setting.
OVERLOAD (49 unit)
This is the time-dial setting for the overload unit
of
the relay. The dial is marked:
l,
2, 3, 4,
5.
TI1ese
marks correspond to the minutes
required for the relay to trip with an applied input current
of2
times the pickup setting. The dial is continuously adjustable between l and
5.
Refer to time-current curve 605838 on page
9.
The time curves shown are labeled I through 5 corresponding to the dial position.
STALL (51 unit)
This is the time-dial setting for the locked rotor unit
of
the relay. The
51
unit has its pickup fixed at 3 times the relay tap setting. The STALL
dial is marked: 5, 10, 15, 20, 30. These marks correspond to the seconds required for the relay
to
trip with an input current
of
6 times the
relay pickup setting. The dial is continuously adjustable between 5 and 30 seconds. See time-current curve 605837 on page
10.
FAULT (50 unit)
This is the pickup setting for the instantaneous unit
of
the relay. The dial is marked in multiples
of
the pickup setting
of
the relay. For
example: with a tap setting
of3.l
amperes and the FAULT dial
at
8 multiples, the pickup current is
3.1X8
= 24.8 amperes.
The dial is continuously adjustable from 4 to
16
multiples. See time-current curve 605837 on page I
0.
IB 7.2.1.7-4
Page4
4. INDICATORS
TARGETS
Motor
Overcurrent
Relay
For
the
Type 49/50/51, operation targets are provided for the 49
and
50/51 functions. For the Type 49/50, targets
are
provided for
the
49
and
50 functions;
and
for
the
Type 49, a target is provided for the 49 function. Control power must be
present to reset
the
targets,
and
the
overload
unit
must
be
in
a "thermally-reset" condition.
PICKUP INDICATOR
A light-emitting-diode
is
provided to indicate
when
the
input current is above
the
pickup setting.
The
led will flash on
and
off
at
a rate
that
is related to
the
current value:
the
higher above pickup,
the
faster
the
rate
of
flashing. With the OVERLOAD
dial set
at
1 minute, approximately 40 flashes will occur prior to a trip operation (assuming
the
relay was fully reset when the
overload was applied).
For
a 5 minute setting approximately 200 flashes will occur.
IMPORTANT: the pickup indicating led is not
an
operation target. Oncea trip occurs the state
of
the
indicating led is
indeterminate.
It
may go
out
or
it may remain continuously lighted.
The
led will remain in that state until secondary current
is re-established into
the
input
of
the
relay.
The
relay is "timing-out" only when
the
Jed is flashing.
APPLICATION
DATA
The
ABB Circuit-Shield™ Type 49/50/51 three-phase Overcurrent Relay provides three important functions for
the
protection
of
motors: overload, locked rotor,
and
fault detection. Although packaged
in
one case, the three functions
are
individually
adjustable, allowing optimum protection without compromise among
the
various elements. Settings
are
easily made with
all adjustments
on
the
front panel
of
the
relay.
OVERLOAD PROTECTION (Function 49)
The
overload function has time-current curves which match the allowable heating times
of
typical motors, thus allowing use
of
the
full capability
of
the
machine, without the risk
of
damage due to continuous
or
repetitive overloads.
The
time-current
curves are given
in
605838,
on
page 9.
Unlike
bi-metals
or
other
thermal
type
relays,
the
Type
49
element
has
memory
of
previous
overloads
with
long
reset
time;
long
enough
to
ensure
proper
protection
in
applications
involving
repetitive
overloads
and
hard
starts.
If
a
second
overload
occurs
before
the
full
reset
of
the
memory,
the
relay
will
trip
in
a
time
shorter
than
shown
by
the
current
curves.
This
relationship
may
be
expressed
by
the
equation
below,
which
is
a
rough
approximation.
T12
T1
= l
-T1
+
(Valid
when Ti less
than
I)
where
TR
is
the
time
in
minutes
required
for
a
specific
time
dial
setting:
Time
Dial 1 2 3 4 5
2.4 4.8 7.2 9.6 12
T2
is
the
time
requiredfor
the
second overload
to
cause
the
relay to trip,
as
a fraction
of
the value
re
ad
from
the
time
current curve.
TI is
the
time
for which
the
first overload lasted, expressed as a fraction
of
the
time allowed by
the
time-current
curve.
For
example,
with
the relay set
on
time dial #1,
if
the
first overload was 2 times pickup
and
lasted 20 seconds:
20
l
T1
= ········· - ....... (for time dial #1)
60 3
TI2
is
the
time
between removal
of
first overload
and
application
of
the
second,
in
minutes.
Motor
Overcurrent
Relay
Solutions to the equation yielding values greater than 1 are not valid, and should be set equal to
1.
IB 7.2.1.7-4
Page
5
Note that the solution is in terms
of
the time required for a trip. There is no requirement that the second overload
be
the
same magnitude as the first. For example
if
the second overload is 2X pickup, and
T2
was calculated as 100%, then the
second overload can last as long as 60 sec. (using time dial #1), before a trip occurs. However,
if
the second overload
happens to
be
4X pickup, it can only last
16
seconds or a trip will occur. The minimum interval between overloads may be
calculated by setting T2= 1 ; then
T12
=
T1
TR.
Another example is shown graphically in Fig. 5 for a repetitive overload
of
200% tap value, with the 49 unit time dial set
at
2 minutes.
LOCKED ROTOR PROTECTION (Function 51)
This element is designed to provide stalled rotor and high-overload protection. The shape
of
this curve accommodates both
full and reduced voltage starts. The time delay is adjustable from 5 to 30 seconds
at
6 times the overload setting, allowing its
use even with motors having very long starting times.
PHASE FAULT PROTECTION (Function 50)
This instantaneous element is adjustable from 4 to
16
multiples
of
the overload unit setting. The operating time
of
this unit
is such that on fused motor starters the relay will trip before the fuse opens on low grade faults, thus saving fuses, but the fuse
will
be
faster
than
the relay for faults above the interrupting capability
of
the starter.
COMPOSITE CHARACTERISTIC
An example
of
the composite Time-Current Tripping Characteristic for a relay equipped with the 49, 50, and
51
elements is
given in Figure
6.
For this example the relay settings are: pickup tap
at
120%
of
motor full load current; time dial (49) set
at 2 minutes; time dial for stall unit at 5 seconds; and instantaneous pickup at 7.2 times full load amperes.
Relay Type
49
49/50
49/50/51
CHARACTERISTICS OF COMMON UNITS
Function
Overload
Overload,
Fault
Overload,
Fault,
Locked Rotor
Connection
Diagram
16D414B
16D414B
16D414B
Control
Voltage
24 Vdc
48 Vdc
110 Vdc
125 Vdc
220 Vdc
250 Vdc
120 Vac
24 Vdc
48 Vdc
110 Vdc
125
Vdc
220 Vdc
250 Vdc
120 Vac
24 Vdc
48 Vdc
110 Vdc
125
Vdc
220 Vdc
250 Vdc
120 Vac
Catalog
Number
414A0096
414A0036
414A0006
414A0046
414A0026
414A0056
414A0066
414B0096
414B0036
414B0006
414B0046
414B0026
414B0056
414B0066
414C0096
414C0036
414C0006
414C0046
414C0026
414C0056
414C0066
m1.2.i.1-4
Page6 Motor Overcurrent Relay
SPECIFICATIONS
INPUT CIRCUIT
Rating:
Frequency:
Burden:
Pickup Taps:
TOLERANCES
3 multiples
of
tap
setting-
continuous
200 amperes - 1 second
(5
amp unit)
40 amperes -1second
(1
amp unit)
50160
Hz.
0.02 ohms, resistive
(5
amp unit)
0.10 ohms, resistive
(1
amp unit)
2.5, 2.8, 3.1, 3.5, 4.0, 4.5
(5
amp unit)
0.5, .56, .62, 0.7, 0.8, 0.9
(1
amp unit)
Pickup: +/- 10%
of
setting.
Operating Time (49/51): +/- 10%
of
setting.
TEMPERATURE RANGE
Nominal:
Additional
+/
-
5%
tolerance:
Must operate:
25 degrees C ambient
-15 to +55 degrees C
-30 to +70 degrees C
OUTPUT CONTACTS
Each contact
at
Tripping:
(Link
Selectable For Hand Reset
Or
SelfReset)
Continuous:
Break:
120 vac: at 125 vdc:
at
250 vdc:
30 amperes
5
2
30 amperes
5
0.3
30 amperes
5
0.1
Note: tolerances shown are with
respect to printed dial markings
on the relay. Final operating values may be
set
by
test using pickup vernier and time
dials.
For units with selector link
in
the hand-reset position, the contacts are reset
by
pressing the TARGET RESET
pushbutton.
If
the contacts do not reset
at
that time, additional time must be allowed for motor cooling.
CONTROL VOLTAGE
See relay nameplate for rating. Models available for:
120 vac 50/60 hz, 0.07 amp max.
125 vdc (100-140 range) 0.07 amp max.
llO
vdc ( 88-125 range) 0.07 amp max.
220 vdc ( 175-246 range) 0.07 amp max.
24 vdc ( 19-29 range) 0.15 amp max.
250 vdc (200-280 range) 0.08 amp max.
48 vdc ( 38- 58 range) 0.08 amp max.
Motor Overcurrent Relay
IMPORTANT: OBSERVE CT POLARITY
a i
52
b I
c l
DC
Reliable
Bus
(+) a I
b
f
11
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12
52
1:-
3 5 a
2~~
3
4 6
(-)
4
Wdh
Circuit
Breaker
Wdh
Motor
Starter
Figure I:
Figure
2:
Typical External Connections
1604148
Motor
Overload
Relay
a
Typea
49, 49/50, 49/50151
Or11wout Test
Case
..
Reset
1npu1
For Tesr Use Only.
Exlernal Resistor Supplied With Relay.
Internal Connections
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Figure
3:
Relay Outline and Panel Drilling
m7.2.1.7-4
Page7
0
M
IB 7.2.1.7-4
Page 8
Fivure
-4
Type
49
Allowable
Time Between
Overloads
for
a 2
Minute
Curve
Trip
Times
in
Percent
of
Times
from
Time-Current
Curves
0%.._~~~~~
.....
----------~
0
2.4
4.8
Minutes
Between
Successive
0Verl0&d•
Motor Overcurrent Relay
Figure
6
Example
Type
49/50/51
Composite
Motor
Protection
Overload
Unit
Set
at
1.2
times
full
load
amps.
Locked
Rotor
Unit
set
at
5
second
curve.
Instantaneous
Unit
Set
at
7.2
times
full
load
amps
1000
1000
100
.a
8 Locked
Rotor
• 10
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c:
...
I 1
...
f4 Locked
Rotor
Unit
'511
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.01
0 l
:z
l 4 5 ' 7 • !I
10
Current
in
Multiple•
of
full
Load
Aapere1
Figure
5
Example
Type 49
Typical
Operation
of
Thermal
Memory
Unit
2
Minute
Time
Dial
Motor
current
IA
in
\ Of
,.,,
Relay
Tap
Setting
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Contents
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Thermal
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in
\
of
Total
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Time
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Minutes
Motor Overcurrent Relay
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TIME.CURRENT
CHARACTERISTICS
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MULTIPLES
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51
MARCH
1977
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Note: Full size transparencies available on request from the factory.
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CHARACTERISTICS
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CURRENT
IN
MULTIPLES
OF
SETTING
CHARACTERISTIC 49 / 50 /
61
605837
Motor
Overcurrent Relay
TESTING
1.
MAINTENANCE AND RENEWAL PARTS
m7.2.1.7-4
Page
11
No routine maintenance is required on the
Type
49/50/51 relays. Follow test instructions to verify that the relay is in proper
working order. We recommend that an inoperative relay be returned to the factory for repair; however, a schematic
diagram will be provided on request. Renewal parts will be quoted by thefactory on request.
214 Series Units
Drawout circuit boards
of
the samecatalog number are interchangeable. Also units with catalog numbers
of
theform
214xxxx2 may replace units with catalog numbers the same except
of
theform 214xxxxl (hand-reset units),where all digits
except the last are identical. Similarly, units
of
the form 214xxxx3 may replace units
of
the form 214xxxx0 (self-reset units).
A unit is identified by the catalog number stamped on the front panel
and
the serial number stamped on thebottom side
of
the
drawout circuit board.
Theboard is removed by using the metal pull knobs on the front panel. Removing the board in service does not open circuit
the CT's; however,
in
applications using the normally closed contact, a trip will result.
An
18 point extenderboard (cat 200X0018) is available for use
in
troubleshooting.
414 Series Units
Metal handles provide leverage to withdraw the relay assembly from the case. Removing the unit
in
an
application that
uses the normally closed contact will cause a trip. The assembly is identified
by
a catalog number stamped on the
front
of
the unit and a serial number stamped on the bottom
of
the board.
Test connections are readily made to the Drawout relay unit by means
of
standard banana plugs. Current connections are
made to the vertical posts at the blade assemblies. Control power and output connections are made at the rear
vertical circuit board. This rear board is marked for easier identification
of
the connection points.
Should separation
of
the upper and lower circuit boards be needed, remove (2) screws that attach the left and right handle
assemblies to the upper printed circuit board. The lower board may then be withdrawn forward from the printed circuit
connector. An
18
point extender board (cat. 200X0018) is available from the factory
if
access to the lower circuit board is
required for troubleshooting.
A test plug assembly, catalog 400X0001 is available for use with the 414 series units. This device plugs into the relay
case on the switchboard and allows access to all external circuits wired to the case. See Instruction Book m 7.7.1.7-8 for
details on the use
of
this device.
2.
HIGH POTENTIAL TESTS
High potential tests are not recommended. A hi-pot test was performed at the factory before shipping.
If
a control wiring
insulation test is required, partially withdraw the relay unit from the case sufficient to break the rear connections before
applying the test voltage.
3. BUILT-IN
TEST
FEATURE
Tests should
be
made with the maincircuit de-energized.
A built-in trip testfeature is provided as a convenient means
of
testing the operation
of
the relay
and
theassociated
trip circuit. Be sure
to
record
or
mark
th
e relay settingsbefore proceeding, so you can easily return to the proper settings at
the end
of
the procedure.
To check theFAULT (50) function, set the Fault dial
at
4 multiples. Press the TRIP test button. The relay should trip
instantaneously
and
display the (50) target.
Motor
Overcurrent Relay IB 7.2.1.7-4
Page
12
To check the STALL (51) function, set the Faultdial at 8 multiples (or higher) to avoid instantaneous operation. Set the
Overload dial at 5 to avoid overload operation. Depress and hold the TRIP button. The relay should operate in
approximately the time
in
seconds set on the Stall dial and a target should
be
displayed for the
51
function. (The pickup led
should flash during this test, indicating proper operation
of
the overload unit.)
Theabove tests are quick functional checks that can
be
performed without test equipment. High accuracy should not be
expected.
RETURN
ALL
SETTINGS
TO
ORIGINAL
VALUES
.
4. ACCEPTANCE TESTS
A typical test circuitfor use with a single-phase test current source is shown in Figure
7.
The test current connections must
be
as shown. Also, since the relay is designed for three-phase applications and responds to the average
of
the 3 phase
currents, a test current correction must be made for single-phase testing: the test current source must be set to 1.5 times
the desired test currenc to obtain the correct response.
(If
a three-phase test source is available, no correction would be
required). Apply proper control power per the nameplate rating
of
the relay.
Thermal memory considerations: when control power is initially applied to the relay, the thermal memory is set at
approximately half-way to the trip point. Therefore, during testing it is preferable that the control power be applied
continuously. Also, terminals
15
and 16 should be momentarily shorted prior to any timing test
of
the overload (49)
element, to insure thatthe thermal memory is fully reset.
Interaction Between Elements: some settings
and
test currents may cause the relay to trip on a function other than that
expected. Check the time-current curves for the planned test current level and time-dial settings prior to running a test.
Usually one
or
more dials can be set temporarily higher
to
avoid such interaction.
Pickup test: set the desired tap (use 2.5
if
none specified). The vernier should be fully counterclockwise. Increase the test
current slowly until the pickup lamp begins flashing. Note the test current (Remember the l.5x factor when testing with a
single-phase source). Pickup should be within +/-10%
of
the tap setting (3.37 -4.13 amperes
ifthe
2.5 ampere tap is used
with single-phase testing). Pickup may then be set exactly to the desired value using the vernier adjustment.
Fault Unit (50): set the Stall dial to maximum. Set the Fault dial to the desired setting (use 8x it none specified). Increase
the current quickly to determine the instantaneous unit pickup current. Do not apply high currents more than a few
seconds due to the thermal stress.
If
the unit does not trip immediately remove the test current and review your procedures.
(Remember the l.5x factor when testing with a single-phase source). The setting may be trimmed as necessary to obtain
the required operating value.
(If
a setting
of
less than 6x is to be used, the final adjustment must be deferred until the stall
function is checked). Timing tests
of
the Fault element are not recommended due to the difficulties in controlling and
measuring very short times.
If
a timing test must be run, preset the test current for 2 times the fault elementpickup setting.
Operating time
of0
.03 seconds
or
less is acceptable.
Stall Unit (51): set the Fault dial at 8x or higher. Set the Overload dial at
5.
Set the Stall dial to the desired delay. (Use
10
seconds
if
none specified). Momentarily short terminals 15-16 to reset the overload unit. Apply a test current
of6x
the
overload pickup setting. (Remember the
l.5x
factor when testing with a single-phase source). The relay should trip on the
51
function within +/-lOX
of
the setting. (9-11 seconds
if
set at
IO)
.
If
the required setting is known the final timing
adjustment may
be
made using the time-dial and repeating the test.
Overload Unit (49): set the test current to 2x the pickup value. (Remember the 1.5x factor when testing with a single-phase
source). Set the overload time-dial to the desired setting. (Use
#1
dial
if
none specified). Reset the thermal memory. Apply
the test current. The relay should time out within +/-10%
of
the value shown on the overload curve 605838 (54 -66 seconds
if
dial # I used).
If
the required setting is known, the final timing adjustment may be made using the time-dial and retesting.
m1.2.1.1-4
Page
13
Notes:
i
CONTROL
VDLTAliE
PER
REL"Y
AflllTINli.
l
G
0
8 1
'f 'f
+
RESET
l l
iii;
iis
Figure
7:
Motor Overcurrent Relay
tr
•
TEST
SET
3
I
AMPSf
fTIME:Rf
I
STDP
1
*
* Resistor supplied with
Relay
Typical
Test Connections
1.
For single-phase testing
as
shown,
adjust current
to
1.5
times
desired
test
current
level.
2.
Momentary current closure
across
terminals
15
to
16
fully
resets
memory
circuit of
the
(
49)
overload function.
Motor
Overcurrent
Relay
OBSOLETE UNITS -- CATALOG SERIES 214A. 214B. 214C
m7.2.1.7-4
Page
14
The
relays referenced here are obsolete
and
no longer
in
production. They have been superseded by the improved series 414A,
414B
and
414C units covered by this instruction book.
The
information that follows is a guide to these older units, especially
in
the event you are replacing one with the newer relay.
Drawout circuit boards
of
the same catalog number are interchangeable. Also units with catalog numbers
of
the form
214xxxx2 may replace units with the same catalog number
of
the form
214xxxxl
(hand-reset units), where all digits except
the last
are
identical. Similarly, units
of
the form 214xxxx3 may replace units
of
the form 214xxxx0 (self-reset units). A unit
is identified by the catalog number stamped
on
the front panel
and
the serial number stamped
on
the bottom side
of
the
drawout circuit board.
The
major difference between the 214xxxx0,
214xxxxl
series
and
the 214xxxx3, 214xxxx2 series unit
is that the latter models use hermetically sealed output trip contacts.
CATALOG SERIES 414AOOx6. 414BOOx6. 414COOx6
The
414A, 414B
and
414C series units with catalog numbers ending with the digit
"6"
have been designed to provide a field
selectable link for changing the output contacts to either"self-reset" or "manually reset". Earlier models
had
to be purchased
with preselected output contact modes.
Drawout circuit boards are
not
interchangeable between the 414xxxx2,3
or
the 414xxxx6 series. However, the rear terminal
connections
are
the same for all three series, therefore, the entire relay including the case assembly may
be
replaced with no
change in
the
external wiring.
The
following is a list
of
recommended replacement units for the older models:
Old
models
214A00xl
214BOOxl
214COOxl
214AOOx2
214BOOx2
214COOx2
414AOOx2
414BOOx2
414COOx2
214A00x0
214BOOx0
214COOxO
214AOOx3
214BOOx3
214COOx3
414A00x3
414B00x3
414COOx3
16D214A
"
16D214A
16D414A
New models
414AOOx6
414BOOx6
414COOx6
414AOOx6
414B00x6
414COOx6
414AOOx6
414BOOx6
414COOx6
16D414B
16D414B
16D414B
Note:
To
complete the catalog number for the above relay list, the
"x"
must be replaced by a control voltage digit.
Control voltage: x = 0 for 110 Vdc x = 5 for 250 Vdc
+
=3 for 48 Vdc =6 for 120 Vac
= 4 for 125 Vdc
16D214A
Std,
C&s•
IHllET
IHl'UT
1'11111
Tt:IT
UIE
DNLV.
c
+
16D414A
T•st
c-•
tJS
td.l
t-Jt
01&
015
01~
u
111
f
:~~~
lllEllT
INl'UT
,.Diii
TIEIT
UI[
DNl.V.
Note: Units rated for 250 Vdc control are supplied with a 8200 ohm,
25
watt resistor connected to terminals
14
and
15. This resistor must be connected to these rear terminals for proper relay operation.
This manual suits for next models
2
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