8/3/2019 SPEM 1A GB 97-09
1/12
Technical Brochure
Brochure SPEM 1 A GB 97-09
Low Voltage Apparatus
ABB Control Oy
Motor Protection RelaySPEM
8/3/2019 SPEM 1A GB 97-09
2/122 ABB Control Oy
Motor Protection Relay SPEM
1) In the following cases please contact the manufacturer:- Frequency Converters- Star-Delta Starters- Soft Starters- Power Factor Correction Banks (PFC)
ApplicationsThe SPEM relay is the ideal answer to problems requiringmore versatile or accurate protection for a motor than canbe offered by a standard thermal overload relay.SPEM relays can be used for protecting low voltagesquirrel cage (AC) motors 1).
Use of SPEM motor protection relay:- helps in extending life time of motor- helps in optimizing motor size- helps in planning maintenance work- protects the drive from mechanical damage
TCM - Thermal Capacity Memory
The SPEM relay is based on microprosessor techniqueswith a built in logic supervising thermal behaviour of motor.
The thermal capacity memory monitors the motor currentand continuously compares the data to the known thermalrecord of the motor, and operates when the thermal limit ofthe motor is exceeded.
The microprosessor based construction ensures long timestability, high accuracy and disturbance free operation.
The compact size enables installation in cramped places.
Protection
SPEM offers protection in the following ways: Thermal Overload Protection with complete
Thermal Capacity Memory (TCM) Start-up Current Protection Under Current Protection Unbalance Protection
- phase unbalance- phase failure- incorrect phase sequence
Earth Fault Protection Self Supervision Fail Safe Operation
In designing the SPEM motor protection relay the principle aim has not onlybeen to fully protect the motor, but also to reduce down time to a minimum.
S00789A
S00790A
EMC-testedTested according to EMC-directive No: 89/336/EEC.
8/3/2019 SPEM 1A GB 97-09
3/12ABB Control Oy 3
Thermal Overload Protection
Provides reliable protection formotor starting as well as for heavyand repeated starting.
1s3 421
I / I ~5 6
10s
5s
3s2s
40s30s20s
1min
2min
3min
5min
10min
20min
30min
1h
2h
3htime
0
1.05s
t6x
5s
2s
30s20s
10s
S00782A
Thermal tripping characteristics:
1s3 421
I / I ~5 6
10s
5s
3s2s
40s30s20s
1min
2min
3min
5min
10min
20min
30min
1h
2h
3htime
0
1.05
t6x
5s
2s
30s
20s
10s
S00783A
Without prior load (Cold curve)
Cooling time-constant = 4 x the heatingtime-constant.
With prior load 0.9 x I
(Hot curve)
100% Tripping
Thermalcapacity
1)2)
3)
S00793A
The microprosessor is continuously calculating thethermal capacity available in the motor:
1) starting2) overloading3) stand still (even after tripping)
Tripping takes place, when the thermal capacity ofmotor is exceeded i.e. motor current is higher than1.05 x full load current I
. Refer to the thermal
tripping characteristics below.
I
tS00792A
8/3/2019 SPEM 1A GB 97-09
4/124 ABB Control Oy
S00781A
Start-Up Current Protection
The relay trips if the thermalcapacity of motor is exceededduring starting. The tripping curveis defined by the preset maximumstarting time (t
6time). In the hot
state SPEMs TCM takes intoaccount also the thermal historyof the motor during starting.
The maximum motor starting times are available fromthe motor manufacturers. If the preset maximumstarting time exceeds 1.7 x the real motor starting time,SPEM allows two starts in the cold state and one in thehot state.
Thermalcapacity
Restart inhibit
t
100%
40%
S00794A
After tripping, if there is less than 60 % ofmotor capacity available, SPEM does notallow a new start until the motor cools down(restart inhibit). In this case, a new start ispossible approximately after 30 s.
Unbalance Protection
Provides protection against:1. Phase unbalance2. Phase failure3. Incorrect phase sequence
Under Current ProtectionProvides protection against asudden loss of loads e.g.
Dry running pumps Broken conveyer belts
This feature can be selected by means of switch S2(I OFF/ON) on the front panel of the SPEM relay(see page 6).
% Full load current
55
100
90
80
70
60
50
40
30
2010
0
12
S00786A
Typical off load currentfor large and mediumsized motors.
S00797A
Tripping is activated if the currentstays between 12...55 % of fullload current (I
) longer than 10 s.
8/3/2019 SPEM 1A GB 97-09
5/12ABB Control Oy 5
Earth Fault Protection(SPEM40_ and SPEM50_ types)
Provides an indication of a defect
in motor winding. Motor canremain in operation if necessaryfrom process point of view.
The maintenance of the motor canbe postponed to an appropriatetime.
A
S00788A
Unbalance percentage
(%)
t(s)
00 10 20 30 40 50
10
20
30S00796AIn case of complete phase failure or incorrect
phase sequence, the tripping time is 6 s.Otherwise according to the curve shown.
By means of switch S3 (I0
/ TRIP) on the front panelof SPEM, it is possible to select either tripping andsignalling or only signalling in case of earth faultfailure.
If only signalling is selected, there will be no tripping ofthe SPEM relay but the signalling contact (9-10) of therelay operates.
In case a tripping function is selected and the SPEMrelay has tripped, it will be automatically reset after200 ms when automatic reset is selected from switchS1 (Reset A/M).
Time lag 1 second for eliminating short time failures.
The tripping level for the earth fault current can be setwith the potentiometer I
0/I
non the front panel of the
SPEM relay.
Self SupervisionThe functions of the electronic circuits are continuouslysupervised by means of a hardware watchdog.
In case of an internal fault, contact 9-10 closes givingan alarm and contact 11 - 12 remains in its positionkeeping the motor circuit closed, and enablingcontinuation of the process.
Fail Safe OperationIn case of loss of external auxiliary voltage, the motorprotection relay trips and can be taken into operationafter reconnection of the auxiliary voltage.
After reconnection of auxiliary voltage supply, theSPEM considers the situation as 75 % of the thermalcapacity of motor would have been used.
Every time when the auxiliary voltage will beconnected, contact 9 - 10 closes for a short period oftime (10 ms) giving an OK signal e.g. to PLC.
The time-lag of the unbalance/singlephasing unit.
8/3/2019 SPEM 1A GB 97-09
6/126 ABB Control Oy
Presetting
t6
time
Adjustability from 2 s to 30 s. Informationfrom motor manufactures.
Switches S1...S8
S1Automatic or manual resettingThe SPEM is always automatically reset, whentripping takes place caused by thermal overload orstart-up current protection. Otherwise either manualor automatic resetting.Manual resetting by operating S1 from manualposition to automatic position and back to manualposition.
S2Undercurrent protection OFF/ONWhether underload protection is required or not
S3Alarm/trip from earth faultSelection of alarm or tripping and alarm.
S4...S8Full load current (I
) preset.Operation of dipswitches to ON-position by movingto the right.
Selectable from 60 % up to 122 % with accuracy of 1 %.
Steps are: 60 % (fixed)32 %16 %
8 %4 %2 %
Earth fault
(SPEM40_ and SPEM50_ types).Adjustability from 20 % to 60 % of ratedzero sequence (SPEM40_) or residual(SPEM50_) current.See table on the page 8.
SPEM
12
11OK
I
I~
Reset A/M
I< OFF / ON
Io / Trip
2
4
8
16
32
I =+60
[% In]
t x (s)
I /I
0~
0n0
0
610 20
2 30
0.3
0.4
0.2 0.6
MADE IN FINLAND
0.5
MOTOR PROTECTION RELAY
Setting of full load current preset in percentage (I
%) andadjustement of current transfomers.
The functions (except earth fault protection) arebased on full load current, which is the maximumallowed continuous on load current of the motor. Thepresets, in percent, can be calculated from thefollowing formula:
II
% = x 100%ICT
I
% = full load current preset in percentageI
= maximum allowed continous onload current = full load current
ICT
= rated primary current of current transformer
Example:ABB motor M2BA 315 SMC 4B3
Pn
= 160 kW, In
= 282 A,400 V used with 5 % overload allowedby themanufacturerFull load current:
I = 282 A x 1.05 = 296 ASPEM type selected from the table on page 9SPEM40B310 (with earth fault protection)
setting value:296 A
I
= x 100% = 95 %310 A
Select switches S8 and S4. Fixed 60% no need toselect.(60 + 32 + 2) % = 94 % < 95 %The t
6time for the motor:
M2BA 315 SMC 4B3 is 15 s
(information from motor manufacturer)
8/3/2019 SPEM 1A GB 97-09
7/12ABB Control Oy 7
When the relay is reset (manually or automatically),the OK LED lights again. Failure indications go out,when the motor is restarted.
Indicates when relay permits starting(steady yellow light)
Front Panel Indicators
Failure indications:When there is a failure, the relay trips and the yellowOK LED goes out and the correspondant red LEDfailure indication shows.
Tripping caused by:
Thermal overload, start-up current Steady red light on the middle LED Always automatically reset The tripped indication cancels when the motor
is restarted
Phase unbalance Irregular red flash of the middle LED Automatic or manual reset The tripped indication cancels when the motor
is restarted
Under current Steady red flash of the middle LED Automatic or manual reset The tripped indication cancels when the motor
is restartedEarth fault
Steady red light on the lower LED Automatic or manual reset The earth fault indication cancels when the motor is
restarted or if the fault disappears
SPEM
12
11OK
I
I~
Reset A/M
I< OFF / ON
Io / Trip
2
4
8
16
32
I =+60
[% In]
t x (s)
I /I
0~
0n0
0
610 20
2 30
0.3
0.4
0.2 0.6
MADE IN FINLAND
0.5
MOTOR PROTECTION RELAY
SPEM function chartPROTECTION PRESETTING INDICATION FUNCTION RESETTING
Tripping Alarm Automatic Manual
THERMAL I
% S4...S8 Steady Middle
OVERLOAD light LED x x x -
- overload Upper
- start-up current t6/ s potentiom.
UNDER CURRENT OFF/ON S2 Steady Middle x x x x
I
% (S4...S8) flash LED
UNBALANCE I
% (S4...S8) Irregular Middle x x x x
flash LED
- phase interrupt
- single phase
- incorrect phase
sequence
EARTH FAULT I0/ I
nLower Steady Lower
% potentiom. light LED
Alarm S3 - x - x
Trip S3 x x x x
SELFSUPERVISION - - - - - x Self Self
Internal fault resetting resetting
FAIL SAFE Upper
OPERATION - - "OK" OFF LED x - - -
Failure of
auxiliary voltage
8/3/2019 SPEM 1A GB 97-09
8/12
8/3/2019 SPEM 1A GB 97-09
9/12ABB Control Oy 9
Motor Protection Relay SPEMOrdering Information
Supply voltage 110 V 50...60 Hz. Current transformer included.
Type Rated Rated current Maximum Earth fault protection Orderingcurrent I
nrange I
nsetting Rated zero Rated residual Number
[A][A] of I
/[%] sequence current
current I0n/[A] I
0n/[A]
SPEM30C060 60 4.5...63 106 - -
SPEM30C105 105 63...111 106 - -
SPEM30C185 185 111...186 102 - -
SPEM30C310 310 186...310 100 - -
SPEM30C400 400 240...400 100 - -
SPEM30C500 500 300...500 100 - -
SPEM40C060 60 4.5...63 106 60 -
SPEM40C105 105 63...111 106 105 -
SPEM40C185 185 111...186 102 185 -
SPEM40C310 310 186...310 100 310 -
SPEM40C400 400 240...400 100 400 -
SPEM40C500 500 300...500 100 500 -
SPEM50C060 60 4.5...63 106 - 1
SPEM50C105 105 63...111 106 - 1
SPEM50C185 185 111...186 102 - 1
SPEM50C310 310 186...310 100 - 1
SPEM50C400 400 240...400 100 - 1
SPEM50C500 500 300...500 100 - 1
Motor Protection Relays SPEM
Supply voltage 230 V 50...60 Hz. Current transformer included.
Type Rated Rated current Maximum Earth fault protection Orderingcurrent I
nrange I
nsetting Rated zero Rated residual Number
[A][A] of I
/[%] sequence current
current I0n/[A] I
0n/[A]
SPEM30B060 60 4.5...63 106 - -
SPEM30B105 105 63...111 106 - -
SPEM30B185 185 111...186 102 - -
SPEM30B310 310 186...310 100 - -
SPEM30B400 400 240...400 100 - -
SPEM30B500 500 300...500 100 - -
SPEM40B060 60 4.5...63 106 60 -
SPEM40B105 105 63...111 106 105 -
SPEM40B185 185 111...186 102 185 -
SPEM40B310 310 186...310 100 310 -
SPEM40B400 400 240...400 100 400 -
SPEM40B500 500 300...500 100 500 -
SPEM50B060 60 4.5...63 106 - 1
SPEM50B105 105 63...111 106 - 1
SPEM50B185 185 111...186 102 - 1
SPEM50B310 310 186...310 100 - 1
SPEM50B400 400 240...400 100 - 1
SPEM50B500 500 300...500 100 - 1
S00789A
S00790A
The connection cable between SPEM and current transformer can be shortened but not madelonger. Cable length appr. 75 cm.
1SCA022388R3210
1SCA022388R5090
1SCA022388R5170
1SCA022388R5250
1SCA022388R5330
1SCA022388R5410
1SCA022388R6140
1SCA022388R6220
1SCA022388R6310
1SCA022388R6490
1SCA022388R6570
1SCA022388R6650
1SCA022388R6730
1SCA022388R6810
1SCA022388R6900
1SCA022388R7030
1SCA022388R7110
1SCA022388R7200
1SCA022388R5500
1SCA022388R5680
1SCA022388R5760
1SCA022388R5840
1SCA022388R5920
1SCA022388R6060
1SCA022388R7380
1SCA022388R7460
1SCA022388R7540
1SCA022388R7620
1SCA022388R7710
1SCA022388R7890
1SCA022388R7970
1SCA022388R8010
1SCA022388R8190
1SCA022388R8270
1SCA022388R8350
1SCA022388R8430
8/3/2019 SPEM 1A GB 97-09
10/1210 ABB Control Oy
Motor Protection Relays SPEMConnection Diagrams
Primary windings for lower rated currents
Only for types SPEM_060
Current range In
Turns around Max. setting[A] current transformer of I
/[%]
[turns]
4.5 ... 7.5 8 100
7.2 ... 12.0 5 100
12.0 ... 20.0 3 100
18.0 ... 36.0 2 120
36.0 ... 63.6 1 106
1pc 2pc 3pc
S00787A
8/3/2019 SPEM 1A GB 97-09
11/12ABB Control Oy 11
Motor Protection Relays SPEMConnection Diagrams
Connection diagram with a separate residual current transformer
Direct On Line Starters
F1
1
2
L1
F2
3
4
L2
F3
5
6
L3
K1
M
3 ~
M1U1
V1
W1
V2
U2 W2
7
8
9
101
1
12
SPEM
TRIP
SIGNAL
UauxA
B
C
DE
F
T1
T2
T3
S1
S2S1
S2
S1
S2
F4
L1
21
22
S1
O
13
14
A1
A2K1
13
14
I K1
S2
N
S00785A
H2H1 1
2
1
2
F1
1
2
L1
F2
3
4
L2
F3
5
6
L3
K1
M3 ~
M1U1
V1
W1
V2
U2 W2
7
8
9
10
11
12
SPEM
TRIP
SIGNAL
Uaux
T1
T2
T3
S1
S2S1
S2
S1
S2
F4
L1
21
22
S1
O
13
14
A1
A2K1
13
14
I K1
S2
N
H1 H21 1
2 2
S00784A
A
B
C
D
E
F
8/3/2019 SPEM 1A GB 97-09
12/12
SYSTEM
QUALITY
CERTIFIEDSFS
ISO 9001
CERT
IFIED
ENVIR
ONMENTA
LSYSTEM
SFSISO 14001
ISO 9001
ABB Control OyP.O. Box 622FIN - 65101 VAASA
Finland
Tel +358 10 22 4000Fax +358 10 22 45708
Motor Protection Relays SPEMDimensionDrawings
SPEM _60...400 SPEM_500
82 82
245
82
42
203
111
44
22
6080
100
O7
SPEM
12
11
OK
I I
~
ResetA/M
I
Top Related