motor protection relay spam 150 c - sangro bv … · abb automation abb substation automation oy...

ABB AutomationABB Substation Automation Oyspam150Cb.ppt 1MRS750224-MPR p 1 (31) EN 09.2000

Motor Protection Relay SPAM 150 C

SPCJ 4D34

TRIP

PROGRAM

RESETSTEP

L1 L2 L3 o IRFIIII

0094

A

SGR 1SGR 2

SGB

SGF

kc

< II %[ ]

t s[ ]si

<t s[ ]

t s/h[ ]

s[ ]tLII %[ ]

ot s[ ]

>>t s[ ]nI I/>>

nsI I/st s[ ]

nI I/6xt s[ ]

p [ ]%a [ ]%i [ ]%

oI nI[ ]%

s

3I >>3I

RS 641 Ser.No.

aux

0 0 0 0 0

80...265V ~ œ18...80V œ

2

5

U

fn = 50Hz60Hz

SPAM 150 C

SPCJ 4D34

REGISTERS OPER.IND.

12345678

n/L3

n/L1

n/L2

12345678

>>

o<

9 EXT.TRIP9

t %[ ]

%[ ]

0093

A

IIIIII

II

I

II

n = ( )II 5A1An =I ( )oI5A1A

oI nI

2

a>t>

t i

i+ t si EINH+

I

m %[ ]

min[ ]

I 2 t

%[ ]%[ ]LI

tI 2s s

NONC

• Numerical multi-function motorprotection relay

• Protection of medium-sized andlarge ac motors

• Contactor and circuit-breakercontrolled ac motor drives

• Remote communication viaserial interface

• Extensive self-supervision includingauto-diagnosis

• Application references in all extremesof climate

• Registered for use in off-shoreand marine application

• Rigid aluminium relay case to IP 54

Features


Motor Protection Relay SPAM 150 C4 9

5 1 N

3 7

4 6

4 8 /5 1

1 4

5 0

Toiminn.fh4

IL 1

IL 2

IL 3

lo

CONTROLINPUT BS

TRIP

SIGNAL 1

PRIOR ALARMOR SIGNAL 2

START ORPRIOR ALARM

RESTARTENABLE

IRF

SERIAL I/O

THREE-PHASE THERMALOVERLOAD PROTECTION

STALL PROTECTION WITHSPEED SWITCH INPUT FORDRIVES WITH LIMITED te-TIME

THERMAL STRESS SUPERVISIONOR THREE-PHASE DEFINITE TIMEOVERCURRENT PROTECTION

THREE-PHASE DEFINITE TIMEHIGH SET OVERCURRENTPROTECTION

DEFINITE TIME LOW-SETEARTH-FAULT PROTECTION

PHASE SEQUENCE PROTECTIONINVERSE TIME PHASEUNBALANCE PROTECTION

DEFINITE TIME UNDERCURRENTPROTECTION

CUMULATIVE START-TIMECOUNTER FOR RESTART INHIBIT

SERIAL COMMUNICATION PORT

Protection units


Motor Protection Relay SPAM 150 CBlock diagramSelector switchesshown in defaultpositions

SPAM 150 C

63

L1L2L3

70 71 72

0

65 6668 6977 78

IRF

-

+

74 75 80 811011

1 1

SGB/1

SGB/2

SGB/7SGB/8

SGB/3

R

1

I-

I 0

+

+

+

B

+

C

+

F

+

E

+

D

+

A

SGB/4

1 1

SGR1

/8

SGB/5SGB/6

U1 SPCJ 4D34

U3 SPTK 4E3

U2 SPTU _ R2

IRF

3

I/O

I>>

Io>

I<

I

> i> a> t

25 26 271 2 3 4 5 6 7 8 9

SPA-

ZC_

Rx Tx

6162

Uaux+- (~)

+ -

~

SGR1

/7SG

R1/6

SGR1

/5SG

R1/4

SGR1

/3SG

R1/2

SGR1

/1

SGR2

/8SG

R2/7

SGR2

/6SG

R2/5

SGR2

/4

SGR2

/3SG

R2/2

SGR2

/1

SGR4

/3

SGR4

/2

I s>Is2 x ts

ts>

AM15

0blc.

fh4

1 A

5 A

1 A

5 A

1 A

5 A

1 A

5 A

STALL

RESTARTINHIBIT

RESTARTINHIBIT

START

TRIP

SELF HOLD.

CONTROLINPUT BS

PRIOR ALARMSIGNAL 2

START PRIORALARM

RESTARTENABLE

SIGNAL 1 TRIP SERIALPORT

BUSCONNECTION

MODULE

RELAY RESET

EXTERNAL TRIP


Motor Protection Relay SPAM 150 CSpecial features • Wide setting ranges, accurate digital settings,

high long-time stability of settings• Flexible configuration of output relays and

external control input• Recording of fault parameters at the moment

of relay operation• Local man-machine communication via push-buttons

and digital display• Powerful software support for parametrization and

supervision via PC• High immunity to electrical and electromagnetic

interference• Member of the SPACOM family and PYRAMID®, ABB´s

coordinated protection and control concept


Motor Protection Relay SPAM 150 CArea of application• High-voltage or low-voltage circuit-breaker

controlled motors.Full protection against different types of fault

• Contactor-controlled high-voltage and low-voltage motors.Operation inhibited at fault currents exceeding the breaking capacity ofthe contactor

• Motor drives with complicated start-up sequences.Several methods for start-up supervision with restart inhibit option

• Critical ExE motor drives with feed-back from motor speed switch.Motors with the permitted stall time shorter than the normal start-up time


Motor Protection Relay SPAM 150 CDimensions of relay case and panel cut-outFlush mounting

Semi-projecting mounting

SPA-ZX 111SPA-ZX 112SPA-ZX 113

176136 96

74114154

a b

a b

129 ±1

139

±1

142

162

136

3034

250

186216

Raising frame

Panelcut-out

Mit1

00SC

.FH4



SPCJ 4D34

TRIP

PROGRAM

RESETSTEP

L1 L2 L3 o IRFIIII

0094

A

SGR 1SGR 2

SGB

SGF

kc

< II %[ ]

t s[ ]si

<t s[ ]

t s/h[ ]

s[ ]tLII %[ ]

ot s[ ]

>>t s[ ]nI I/>>

nsI I/st s[ ]

nI I/6xt s[ ]

p [ ]%a [ ]%i [ ]%

oI nI[ ]%

s

3I >>3I

Readouts and operation indicatorsIndicators for readout of measured phase currents, doubling as phase-fault indicators

Indicator for readout of measured neutral current, doubling as earth-fault indicator

Indicator for internal relay fault

Digital display for presentation of numerical parameters, i.e. settings, measured and recorded values including start and operation indications, auto-diagnostic fault messages, etc.

Indicator showing that the main trip relay of the motor protection relay has operated



SPCJ 4D34

TRIP

PROGRAM

RESETSTEP

L1 L2 L3 o IRFIIII

0094

A

SGR 1SGR 2

SGB

SGF

kc

< II %[ ]

t s[ ]si

<t s[ ]

t s/h[ ]

s[ ]tLII %[ ]

ot s[ ]

>>t s[ ]nI I/>>

nsI I/st s[ ]

nI I/6xt s[ ]

p [ ]%a [ ]%i [ ]%

oI nI[ ]%

s

3I >>3I

Motor full load current I�� 0.50...1.50xInMaximum safe stall time t6x 2.0...120 s

Thermal weighting factor p 20...100%

Thermal prior alarm level �a 0.50...1.00 x �t

Thermal restart inhibit level �i 0.20...0.80 x �t

Cooling-time multiplier kc 1...64 x �h



SPCJ 4D34

TRIP

PROGRAM

RESETSTEP

L1 L2 L3 o IRFIIII

0094

A

SGR 1SGR 2

SGB

SGF

kc

< II %[ ]

t s[ ]si

<t s[ ]

t s/h[ ]

s[ ]tLII %[ ]

ot s[ ]

>>t s[ ]nI I/>>

nsI I/st s[ ]

nI I/6xt s[ ]

p [ ]%a [ ]%i [ ]%

oI nI[ ]%

s

3I >>3I

• Operation principles: Is & ts or ls2 x ts

• The operation of the start-up supervision unit can be inhibited by a motor speed switch connected to the control input of the relay

Motor start current Is 1.0...10.0 x InMotor start up time t6x 0.3...80 s



SPCJ 4D34

TRIP

PROGRAM

RESETSTEP

L1 L2 L3 o IRFIIII

0094

A

SGR 1SGR 2

SGB

SGF

kc

< II %[ ]

t s[ ]si

<t s[ ]

t s/h[ ]

s[ ]tLII %[ ]

ot s[ ]

>>t s[ ]nI I/>>

nsI I/st s[ ]

nI I/6xt s[ ]

p [ ]%a [ ]%i [ ]%

oI nI[ ]%

s

3I >>3I

• The start current setting can be automatically doubled during a motor start-up

Start current I>> 0.5...20.0 x In or infinite

Operate time t>> 0.04...30.0 s



SPCJ 4D34

TRIP

PROGRAM

RESETSTEP

L1 L2 L3 o IRFIIII

0094

A

SGR 1SGR 2

SGB

SGF

kc

< II %[ ]

t s[ ]si

<t s[ ]

t s/h[ ]

s[ ]tLII %[ ]

ot s[ ]

>>t s[ ]nI I/>>

nsI I/st s[ ]

nI I/6xt s[ ]

p [ ]%a [ ]%i [ ]%

oI nI[ ]%

s

3I >>3I

• In contactor-controlled drives, the earth-fault unit can be inhibited at phase current levels above 4, 6 or 8 times In

Start current I0> 0.01...1.00 x InOperate time t0> 0.05...30 s



SPCJ 4D34

TRIP

PROGRAM

RESETSTEP

L1 L2 L3 o IRFIIII

0094

A

SGR 1SGR 2

SGB

SGF

kc

< II %[ ]

t s[ ]si

<t s[ ]

t s/h[ ]

s[ ]tLII %[ ]

ot s[ ]

>>t s[ ]nI I/>>

nsI I/st s[ ]

nI I/6xt s[ ]

p [ ]%a [ ]%i [ ]%

oI nI[ ]%

s

3I >>3I

• Inverse time operation characteristic

• The unbalance unit and the incorrect phase sequence protection unit can be set out of operation separately

Start current �I 0.1...0.40 x IL or infinite

Operate time t� at 0.1 x IL 20...120 s



SPCJ 4D34

TRIP

PROGRAM

RESETSTEP

L1 L2 L3 o IRFIIII

0094

A

SGR 1SGR 2

SGB

SGF

kc

< II %[ ]

t s[ ]si

<t s[ ]

t s/h[ ]

s[ ]tLII %[ ]

ot s[ ]

>>t s[ ]nI I/>>

nsI I/st s[ ]

nI I/6xt s[ ]

p [ ]%a [ ]%i [ ]%

oI nI[ ]%

s

3I >>3I

• The operation of the undercurrent unit is inhibited at motor standstill, i.e. at load current values below 0.12 x I�

Start current I< 0.30...0.80 x I��or infinite

Operate time t< 2...600 s



SPCJ 4D34

TRIP

PROGRAM

RESETSTEP

L1 L2 L3 o IRFIIII

0094

A

SGR 1SGR 2

SGB

SGF

kc

< II %[ ]

t s[ ]si

<t s[ ]

t s/h[ ]

s[ ]tLII %[ ]

ot s[ ]

>>t s[ ]nI I/>>

nsI I/st s[ ]

nI I/6xt s[ ]

p [ ]%a [ ]%i [ ]%

oI nI[ ]%

s

3I >>3I

• Any attempt to restart the motor is prevented when the accumulated start-up time exceeds the set maximum accumulated start-up time �tsi permitted

Maximum accumulated start-up time �tsi 5...500 s

Countdown rate ��tsi of accum. start-up time 2...250 s/h



SPCJ 4D34

TRIP

PROGRAM

RESETSTEP

L1 L2 L3 o IRFIIII

0094

A

SGR 1SGR 2

SGB

SGF

kc

< II %[ ]

t s[ ]si

<t s[ ]

t s/h[ ]

s[ ]tLII %[ ]

ot s[ ]

>>t s[ ]nI I/>>

nsI I/st s[ ]

nI I/6xt s[ ]

p [ ]%a [ ]%i [ ]%

oI nI[ ]%

s

3I >>3I

Switchgroup settings

Switchgroup SGF for selection of required optional functions in various applications

Switchgroup SGB for routing of blocking signals and selection of the latching function for the trip relay

Switchgroup SGR1 and SGR2 for confIuguration of the output relays



SPCJ 4D34

TRIP

PROGRAM

RESETSTEP

L1 L2 L3 o IRFIIII

0094

A

SGR 1SGR 2

SGB

SGF

kc

< II %[ ]

t s[ ]si

<t s[ ]

t s/h[ ]

s[ ]tLII %[ ]

ot s[ ]

>>t s[ ]nI I/>>

nsI I/st s[ ]

nI I/6xt s[ ]

p [ ]%a [ ]%i [ ]%

oI nI[ ]%

s

3I >>3I

Push-button operations

Use both push-buttons simultaneously to:- make a complete relay reset, i.e. clear memorized values

and release latched output relays- store a new setting value- test an output relay

Use the PROGRAM push-button to:- enter a submenu from the main menu- enter the setting mode of an adjustable parameter- control the cursor in the setting mode or- control the selected output in the test mode

Use the RESET/STEP push-button to:- reset operation indicators- step forward or backward in main menus or submenus - scroll set values in the setting mode


Motor Protection Relay SPAM 150 CFlexible configuration of output relays

70 71 72 65 6668 6977 78IRF

74 75 80 81

1 1SGB/7SGB/8

R

1

+

B

+

C

+

F

+

E

+

D

+

A

1 1

SGR1

/8

IRF

3

I/O

I>>

Io>

I<

I

> i

> a> t

SGR1

/7SG

R1/6

SGR1

/5SG

R1/4

SGR1

/3SG

R1/2

SGR1

/1

SGR2

/8SG

R2/7

SGR2

/6SG

R2/5

SGR2

/4

SGR2

/3SG

R2/2

SGR2

/1

SGR4

/3

SGR4

/2

I s>Is2 x ts

ts>

U1 SPCJ 4D34

STALL

RESTARTINHIBIT

RESTARTINHIBIT

START

TRIP

SELF HOLD.

PRIOR ALARMSIGNAL 2

START PRIORALARM

RESTARTENABLE SIGNAL 1 TRIP

RELAY RESET

EXTERNAL TRIP Relco

nf.fh

4



4

1

2

3

5

6

9

8

32

Vika

_ana

.fh4

1

1

1

1

1

1

1

1

1

2

2

2

2

2

2

2

3

3

3

3

3

3

3

7

Latest memorized, event (n)final value of phase current IL1



Latest memorized, event (n)final value of neutral current Io

Latest memorized, event (n)final value of unbalance I / IL

Latest memorized, event (n)final value of start-up stress

Approximate time ti beforea restart attempt is enabled

Actual value m of thethermal capacity used

Latest memorized, event (n)final value of thermal level m

Actual value ts of thestart-up time counter

Duration of latestactivation of unit I>

Duration of latestactivation of unit I>>

Duration of latestactivation of unit I<

Duration of latestactivation of unit Io

Duration of latestactivation of unit I

Motor start-upcount at event (n)

Thermal level beforethe latest event (n)

Actual value of thephase unbalance I

Previous event (n-1)value of current Io

Previous event (n-1)value of unbalance I

Previous event (n-1)value of start-up stress

Thermal level afterthe prior event ( n-1)

Start-up time ts of thelatest motor start-up

Previous event (n-1)value of phase L1



Duration of previousactivation of unit I>

Duration of previousactivation of unit I>>

Duration of previousactivation of unit I<

Duration of previousactivation of unit Io

Duration of previousactivation of unit I

Motor start-upcount at event (n-1)

Thermal level beforethe prior event ( n-1)

Counter for numberof service hours

DATA REGISTERED DURING THE PREVIOUS EVENT (n-1)DATA REGISTERED DURING THE LATEST EVENT (n)

Comprehensive post-fault analysis


Motor Protection Relay SPAM 150 CSerial communication features

When the relays is connected to a control data communicator the following parameters can be accessed:• Actual measured values can be read

• Analogue setting values and switchgroup settings can be read and, if necessary, changed using a password

• Recorded fault parameters can be read and erased• Status information of output relays, etc. can be read• Spontaneous reporting of selected events to an event

recorder or a printer


Motor Protection Relay SPAM 150 CHigh immunity to electrical interference

• Galvanically isolated electronic circuits

• Protection by enclosure of relay case to IP 54

• High immunity to electrical interference:Insulation test to IEC 60255-5 2 kV, 50 Hz, 1 minImpulse test to IEC 60255-5 5 kV, 1.2/50 �s, 0.5 JHigh frequency test to IEC 60255-22- common mode, class III 2.5 kV, 1 MHz, 400 bursts/s- differential mode, class III 1.0 kV, 1 MHz, 400 bursts/s

Fast transient test to IEC 60255-22 4 kV, 5/50 msElectrostatic discharge test to IEC 60255-22-2 8 kV/6 kVElectromagnetic field test to IEC 60801-3 10 V/m, 150 kHz...1000 MHzMagnetic field test to IEC 60521 400 A/m


Motor Protection Relay SPAM 150 CContinuous self-supervision

Memory- RAM Rotating “one” One byte per 10 ms- ROM Checksum- EEPROM Write and read of

reference voltage

Microprocessor Watch-dog Every 5 msA/D converter, Measuring of Once a minute and always

reference voltage before tripping

MUX and amplifiers Settings Checking for

correct value Once a minuteMan-machine display Visual inspection Only on connection of supply voltageDG/DC converter Measurement of

supply voltages Once a minuteOutput amplifiers Feedback from and trip relay coil output relays Once a minuteProgram execution Watch-dog Every 5 msWatch-dog Auto-reset and IRF relay

Test object Check contents Execution frequency


Motor Protection Relay SPAM 150 CPush-button operation guide

STEP 0,5 s PROGRAM 1 s PROGRAM 5 s PROGRAM 5 s

2

1 1 0 0 0

3

Paini

ket.f

h4

Normal status, display off

First measuring value

Last measuring value

Memorized values etc.

Actual setting value 1

SUBMENUMAIN MENU SETTING MODE

Second settingvalue for stage 1

Main settingvalue for stage 1

INCREASE VALUESTEP 0.5 s

MOVE FIGURE OR DECIMAL POINTCURSOR WITH THE PROGRAM BUTTON 1 s

STORE THE NEW SETTING BY PRESSINGSTEP AND PROGRAM BUTTONSSIMULTANEOUSLY AFTER THE VALUEHAS BEEN SET AND THE WHOLEDISPLAY IS BLINKING

Actual setting value 2

FWD. STEP 1 s

REV. STEP 0.5 s

FWD. STEP 1 s

REV. STEP 0.5 s

In most menu charts the submenus have been drawn in a horizontal directionin order to ge all main and submenu positions shown in the same chart.

NOTE !



12345678

SGF1 01 0

1 01 0

1 0

x 1 =x 2 =x 4 =x 8 =x 16 =x 32 =x 64 =x 128 =

1

1

00

04

x I6

x I

00

110

11

I s2 x t s

0 1

1

1

1

0

SGFr

yhm

a.fh

4

8 x I

Yes

No Defa

ult p

r.

Settin

g

Phase unbalance protection in usePhase reversal protection in useStartup supervisionUnderload protection in use

Checksum(default = 115 )

High-set O/C protection in useHigh O/C setting doubled during startupE/F protection inhibitedfor phase currents above:

No in

hibit

Def.t

ime

Settings of switchgroup SGF


Motor Protection Relay SPAM 150 CControl signal switchgroup SGB

12345678

SGB1 01 01 01 01 01 01 01 0

x 1 =x 2 =x 4 =x 8 =x 16 =x 32 =x 64 =x 128 =

00000000

Yes

No Def

ault

pr.

Setti

ng

Signal BS used as motor speed switchMotor restart inhibited by signal BSPhase unbalance unit blocked by signal BSEarth-fault unit blocked by signal BSExternal trip order from signal BSExternal relay reset via signal BSLatching tripping signal TS2 for l>>,lo, lInternal tripping signal always latched

Checksum =(default = 000)


Motor Protection Relay SPAM 150 COutput relay configuration switchgroup SGR1

12345678

SGR11 01 01 01 01 01 01 01 0

0

1

0

00

0

0

164 =32 =16 =

4 =2 =1 =

8 =

xxxxxxxx 128 =

Settin

g

Defa

ult p

r.

NoYes

Checksum(default = 129)

Thermal prior alarm linked to SS2Thermal trip signal linked to SS2Stall protection trip signal linked to SS2l>> trip signal linked to SS2

l trip signal linked to SS2Io> trip signal linked to SS2l< trip signal linked to SS2lo> trip signal linked to TS2



SGR212345678 128 =

64 =32 =16 =

4 =2 =1 =

8 =

xxxxxxxx

01011111

00000000

11111111

Setti

ng

Defa

ult p

r.

NoYes

Checksum(default = 250)

Thermal prior alarm linked to SS1Motor startup information linked to SS1l>> start output linked to SS1Thermal trip signal linked to SS3Stall protection trip signal linked to SS3

l trip signal linked to SS3lo> trip signal linked to SS3U< trip signal linked to SS3

Output relay configuration switchgroup SGR2


Motor Protection Relay SPAM 150 CBehaviour of thermal unit at two cold startsA Thermal capacity curve taking into account

the hot spot behaviour at heavy overloadB Thermal history curve following

curve A at a rate of p%C Rapid increases in thermal capacity

available when hot spots are levelled outD Cooling down when the motor is

running at normal loadE Restart enabled when the thermal

level falls below the set inhibit levelF The thermal capacity is used according

to this curve during the second start-upG The thermal background curve follows curve F with a rate p%H Rapid increase in available thermal capacity due to hot spot levellingI When the motor runs at normal current, the curves decline to the normal heat levelK The restart enable is activated when the thermal level goes below the set inhibit level

100

60

80

%

40A

B

C

Kyl

mak

ay.fh

4

20tD

E

F

G

H

KI

First startup Running Second startup Motor running at normal load

Thermal Capacity


Motor Protection Relay SPAM 150 CBehaviour of thermal unit at a hot startA Thermal capacity curve taking into

account the hot spot behaviour atheavy overload

B Thermal history curve followinggcurve A at a rate of p%

C Rapid increase in thermal capacity available when hot spots are levelled out

D Cooling down at standstill at a rate decreased by a factor kc

E Restart enabled when the thermallevel falls below the set inhibit level

F The thermal capacity is used at this rate during start-up

G The thermal background curve follows curve F with a rate p%

H When the motor runs at normal current level, the curves decline to the normal heat level

100

60

80A

40

Moo

tlam

p.fh

4

20

tt

B

C

D

E

F

G

H

Overload leadingto a thermal trip.

Cooling down at standstill, time in minutes. Restart at I = Isfor time t = tsMotor running,time in minutes.

Thermal Capacity


Motor Protection Relay SPAM 150 CThermal unit equationsHeating during overload:�A = (l / (1.05 x l�))2 x (1-e -t/�) x 100%�B = (l / (1.05 x l�))2 x (1-e-t/�) x p%

Cooling at normal load or during standstill:When the current falls below 1.0 x l��, the thermal curve A is linearly brought down to the level of the thermal history curve B as shown in curve part C. This corresponds to the levelling out of the hot spots in the motor. Thereafter the cooling follows the lower curve with a time constant equal to the heating time constant as long as the motor is running at normal load or idling.For a motor at standstill, i.e. when the current is below 12% of l��, the cooling can be expressed as:Q=Q02 x e -t/kc x �, where Q0 is the initial thermal level and kc is the cooling time multiplier.In the equations above, the heating time constant can be substituted by �� 32 x t6x.The thermal unit is supervised twice a second in the relay, giving a maximum trip time resolution of 0.5 s.

A

B

C

D

Lamp

yht.f

h4

100

80

60

% Thermal Capacity


Motor Protection Relay SPAM 150 CThermal trip curves

1 2 3 4 5 6 8 101

2

345

10

20

30

4050

100

200

300

400500

1000

2000

30004000

t/s

Cold curve; prior load = 0p = 20...100%

l/l2.5

5

10

15

20

30

60

120

t6x[s]

1.05

1 2 3 4 5 6 8 101

2

345

10

20

30

4050

100

200

300

400500

1000

2000

30004000

t/s

Hot curve; prior load = 1.0 x lp = 20%

l/l2.5

5

10

1520

30

60

120

1.05

1 2 3 4 5 6 8 101

2

345

10

20

30

4050

100

200

300

400500

1000

2000

30004000

t/s


l/l

5

10

1520

30

60

120

1.05 2.5

1 2 3 4 5 6 8 101

2

345

10

20

30

4050

100

200

300

400500

1000

2000

30004000

t/s


l/l

30

60

120

1.05 2.5 10 15 205

t6x[s]

t6x[s]

t6x[s]

Ther

mcur.

FH4


Motor Protection Relay SPAM 150 COperate time of unbalance unit

10 20 30 40 50 60 70 80 90 100I/ IL [%]

100

80

60

50

40

30

20

10

8

6

5

4

3

2

1

ts

120

120

ts

Op_time

s.FH4

100

80

60

40

20

motor protection relay spam 150 c - sangro bv … · abb automation abb substation automation oy...

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