SPCJ 4D34

TRIP

PROGRAM

RESETSTEP

L1 L2 L3 o IRFIIII

956

SGR 1SGR 2

SGB

SGF

kc

θ< II %[ ]

tΣ s[ ]si

<t s[ ]

∆ tΣ s/h[ ]

s[ ]t ∆LII %[ ]∆

ot s[ ]

>>t s[ ]nI I/>>

nsI I/st s[ ]

nθI I/6xt s[ ]

p [ ]%

θa [ ]%θ i [ ]%

oI nI[ ]%

s

3I >>3I

RS 641 Ser.No.

SPAM 150 C

Uaux

SPCJ 4D34

REGISTERS OPER.IND.

0 0 0 0 0

12345678

n/L3

n/L1

n/L2

12345678

>>

o<

2

5

9 EXT.TRIP9

t %[ ]

%θ [ ]

955D

II

II

II

I

I

I

I

I

80...265V18...80V –

n = ( )II 5A1A

n =I ( )oI5A1A

oI nI

∆2

θaθ>

θ tθ>

θ

t i

i + tΣ si EINH+

I∆

θm %[ ]

min[ ]

I 2 t

%[ ]

%[ ]LI

tI 2s s

–~ NONC

fn = 50Hz

60Hz

SPAM 150 CMotor protection relay

User´s manual and Technical description

2

1MRS 750637-MUM EN

Issued 1997-03-05Modified 2002-04-24Version B (replaces 34 SPAM 8 EN1)Checked MKApproved OL

Data subject to change without notice

SPAM 150 CMotor protection relay

Contents Characteristics ................................................................................................................ 2Area of application .......................................................................................................... 3Short description of operation ........................................................................................ 3Connection diagram ....................................................................................................... 4Connections ................................................................................................................... 6Control signals between the modules .............................................................................. 7Abbreviations of signal names ......................................................................................... 7Operation indicators ....................................................................................................... 8Power supply and output relay module ........................................................................... 9Technical data (modified 2002-04) ............................................................................... 10Maintenance and repair ................................................................................................ 13Spare parts .................................................................................................................... 13Ordering numbers ........................................................................................................ 13Dimensions and instructions for mounting .................................................................. 14Information required with order ................................................................................... 14

The complete user´s manual includes the following separate manuals:

Motor protection relay, general description 1MRS 750637-MUM ENGeneral characteristics of D type relay modules 1MRS 750066-MUM ENMotor protection relay module type SPCJ 4D34 1MRS 750476-MUM EN

Versatile multifunction relay for the protectionof circuit breaker or contactor controlled a.c.motors

Flexible single, two or three phase protectionrelay for feeders etc.

Thermal overload protection, monitoring allthree phases, the thermal replica is adjustableboth for protected objects with or protectedobjects without hot-spots

High-set overcurrent protection operating in-stantaneously or with definite time characteris-tic

Phase unbalance & single-phasing protectionwith inverse time characteristic

Fast operating incorrect phase sequence protec-tion

Sensitive definite time or instantaneous earth-fault protection with tripping or only signallingfunction

Characteristics Undercurrent protection with wide start cur-rent and operate time setting ranges

Start-up supervision with Is2 x ts-characteristic,

with a low-set overcurrent unit or as a start-uptime counter. The start-up supervision can alsocooperate with a speed switch on the motorshaft of an ExE-type motor

Continuous self-supervision of hardware andsoftware

Current range handled meets the requirementsfor ExE motor drives of Zone 1

Two versions; one with a normally open tripcontact for circuit-breaker controlled drives andanother with a normally closed trip contact forcontactor controlled drives

Fibre-optic serial communication over the SPAbus provides access to any relay data

Powerful support software for parametrizationof the relay and for recording of measured andrecorded values, events, etc.

3

The microprocessor based motor protectionrelay SPAM 150 C is an integrated designcurrent measuring multifunction relay for thecomplete protection of a.c. motors. The mainarea of application covers large or medium-sizedthree-phase motors in all types of conventionalcontactor or circuit breaker controlled motordrives. The motor protection relay is available in

two versions, one with a making trip contact andthe other with a breaking trip contact.

The relay can also be used in other applicationsrequiring a single-, two- or three-phase over-current and/or overload protection and non-directional earth-fault protection.

Area ofapplication

The combined multifunction motor protectionrelay is a secondary relay device which is con-nected to the current transformers of the pro-tected motor drive. The three phase currentsand the neutral current of the protected deviceare continuously measured and on the basis ofthis measurement, the thermal condition of themotor is calculated and the faults of the networkare detected. In fault situations the protectiveunits of the relay provide alarm or trip thecircuit-breaker.

By appropriate programming of the output re-lay matrix, various starting, prior alarm or re-start inhibit signals are received as contactfunctions. This contact information is used e.g.

for the blocking of co-operating protective re-lays located upstreams, for connection to annun-ciator units etc.

The motor protection relay contains one exter-nal logic control input, which is activated by acontrol signal on the auxiliary voltage level. Theinfluence of the control input on the relay isdetermined by programming switches of themeasuring module. The control input can beused either for blocking one or more of theprotective stages, for carrying out an externaltrip order, for inhibiting a restart attempt or forresetting a latched output relay in the manualreset mode.

Short descriptionof operation

Fig. 1. Protective functions of the motor protection relay type SPAM 150 C.The encircled numbers refer to the ANSI-numbering of protective functions.

START

THREE-PHASE THERMALOVERLOAD PROTECTION

TRIP

SIGNAL 1

SERIAL PORT

IL1

IL2

IL3

Io

PRIOR ALARMOR SIGNAL 2

IRF SELF-SUPERV.

CONTROLINPUT BS

CUMULATIVE START-UPCOUNTER AND RESTARTINHIBIT FUNCTION

SERIAL COMMUNICATION PORT

STALL PROTECTION WITH SPEED SWITCH INPUT FOR DRIVES WHERE ts > te

LOW-SET DEFINITE TIME EARTH-FAULT PROTECTION

RESTARTENABLE

DEFINITE TIME UNDER-CURRENT PROTECTION

49

51N

37

46INCORRECT PHASE SEQUENCE AND PHASE INVERSE TIME UNBALANCE PROTECTION

51

THERMAL STRESS SUPERVISION ALT. THREE-PHASE DEFINITE TIME OVERCURRENT PROTECTION

14

THREE-PHASE HIGH-SET DEFINITE TIME OVERCURRENT PROTECTION

50

48

4

Connectiondiagram

SP

AM

150 C

63

L1

L2L3

7071

72

0

6566

6869

7778

IRF

S

IGN

AL 1

-

+

TR

IP

7475

PR

IOR

ALA

RM

S

IGN

AL 2

8081

1011

11

SG

B/1

SG

B/2

SG

B/7

SG

B/8

SG

B/3

TR

IPRLA

TC

HIN

G

ST

AR

T

PR

IOR

ALA

RM

R

ES

TA

RT

E

NA

BLE

1

I-

I0

+

+

+B

+C

+F

+E

+D

+A

SG

B/4

11

SGR1/8

SG

B/5

SG

B/6

U1 S

PC

J 4D34

U3 S

PT

E 4E

3

U2 S

PT

U _ R

2

CO

NT

RO

LIN

PU

T

IRF

Σ >ts

3

ST

ALL

I/O

I>>

Io>I< ST

AR

T

∆I R

ES

TA

RT

INH

IBIT

R

ES

TA

RT

INH

IBIT

RE

LAY

RE

SE

T

θ>θiθ>θaθ>θt

EX

TE

RN

AL T

RIP

I x t2s

s

2526

271

23

45

67

89

1 A5 A

1 A5 A

1 A5 A

1 A5 A

SE

RIA

L P

OR

T

SPA-ZC_

Rx

Tx

6162

U+ (~)

- (~)

+-

aux

~

SGR1/7SGR1/6SGR1/5SGR1/4SGR1/3SGR1/2SGR1/1

SGR2/8SGR2/7SGR2/6SGR2/5SGR2/4

SGR2/3SGR2/2SGR2/1

SG4/3

I >s

SG4/2 TS

1S

S1

SS

2S

S3

TS

2

Fig. 2. Connection diagram of the motor protection relay SPAM 150 C. The version shown is theone with the normally open trip contact, i.e. with an auxiliary supply and output relay module typeSPTU 240R2 or SPTU 48R2.

5

Uaux Auxiliary voltageA, B, C, D, E, F Output relaysIRF Self-supervisionSGB Switchgroup for the configuration of the blocking or control signalTRIP Trip output relay, output 65-66SIGNAL Signal on trippingPRIOR ALARM Prewarning for a beginning overload conditionSTART Start information from the motorRESTART ENABLE Starting of motor inhibited in fault conditionsU1 Motor protection module SPCJ 4D34U2 Power supply and output relay module SPTU 240 R2 or SPTU 48 R2

with a normally open trip contact, SPTU 240 R3 or SPTU 48 R3 witha normally closed trip contact

U3 Input module SPTE 4E3SPA-ZC— Bus connection moduleSERIAL PORT Serial communication portRx, Tx Receiver bus terminal (Rx) and the transmitter bus terminal (Tx) of

the bus connection moduleSTALL External stall control inputRESTART INHIBIT External restart inhibit control signalLATCHING Latching function of the trip relay

68

69

77

78

80

81

Mad

e in

Fin

land

1

2

3

4

5

6

7

8

9

25

26

27

61

62

63

65

66

74

75

70

71

72

10

11

Ser

ial P

ort

SP

A

Fig. 3. Rear view of relay SPAM 150 C.

6

vides a latching function after any trip opera-tion. After having latched the output relay mustbe manually reset or reset by remote control.

The trip alarm signals from the relay module areobtained via output relays B and C. The signalsto be routed to these relays are selected withswitches1...7 of switchgroup SGR1 and switches4...8 of switchgroup SGR2 of the relay module.Normally the output relays B and C are givensuch a configuration that a thermal prior alarmis obtained over relay C and the trip signals ofthe protection units are linked to output relay Bto form an auxiliary trip signal. This is also thedefault setting of the relay on delivery from thefactory.

The signals to be routed to the output relay Dare selected with switches 1, 2 and 3 of softwareswitchgroup SGR2 in the main menu of therelay module. Switch SGR2/1 routes the ther-mal prior alarm, switch SGR2/2 routes thestartup information for the motor and switchSGR2/3 routes the start signal of the high-setovercurrent stage to output relay D.

Output relay E, terminals 74-75, is a heavy dutyoutput relay capable of controlling a circuitbreaker, as the main trip relay A. Relay E is usedfor controlling the restart of the motor. If thethermal capacity used exceeds the set restartinhibit level of the thermal unit, if the allowedmaximum cumulative start-up count is exceededor if the external restart inhibit signal is activethe output relay E prevents a motor restartattempt. This also applies to a condition wherethe protective relay is out of auxiliary voltage orthe relay is faulty.

Output relay F, terminals 70-71-72, operates asthe output relay of the integrated self-supervi-sion system. The relay operates on the closed-circuit principle, thus under normal service con-ditions the contact gap 70-72 is closed. If a faultis detected by the self-supervision system, or ifthe auxiliary supply fails, the output relay dropsoff, providing an alarm signal by closing the NOcontact 71-72.

The relay is connected to the SPA data bus bymeans of bus connection module type SPA-ZC17 or SPA-ZC21. The bus connection moduleis connected to the D type connector markedSERIAL PORT on the rear panel of the relay.The fibre-optic cables are connected to theconnectors Tx and Rx of the bus connectionmodule. The communication mode selectorswitches on the bus connection module are setin position "SPA".

The three phase currents are connected to ter-minals 1-2, 4-5 and 7-8, when the rated currentof the secondary circuits is In = 5 A. When usingcurrent transformers with a rated current of 1 A,terminals 1-3, 4-6 and 7-9 are used. The ther-mal overload protection may also be used insingle-phase or two-phase applications, in thiscase inputs not used may be left unconnected.

To get a proper operation of the unbalance andincorrect phase sequence protection in a two-phase application, the two phase currents shouldbe summed in the third phase current input. Insingle-phase applications, wiring the phase cur-rent through two or three current inputs in seriesmay slightly increase the operating speed of therelay and stabilize operation of the thermal unit.

The neutral current of the earth-fault protectionis connected to terminals 25-26 when the ratedcurrent is 5 A and to terminals 25-27 when therated current is 1 A.

The control input 10-11 can be used in fivedifferent ways:- as the control input controlled by a motor

speed switch in Ex-type applications- as the control input of an external blocking

signal for blocking the operation of the unbal-ance or earth-fault protection units

- as the control input for an external trip signal- as the control input for unlatching the trip relay- as the control input for the restart enable relay.

The designed function is selected by means ofswitches 1...8 of switchgroup SGB in the mainmenu of the protection relay module.

The auxiliary supply voltage of the relay isconnected to the terminals 61-62. At d.c. auxil-iary supply voltage the positive lead is connectedto terminal 61. The accepted input voltagerange is determined by the type of power supplyand output relay module inserted in the relaycase. For further details see the description of thepower supply module. The accepted auxiliaryvoltage range of the relay is indicated on thefront panel.

Output relay A provides the CB tripping com-mands when the operate time of a protectiveunit has elapsed. The earth-fault unit can bemade non-tripping, i.e. only signalling, withswitch 8 of switchgroup SGR1. On delivery fromfactory all protective units are selected to per-form tripping. A latching function of the outputrelay A can be selected by means of switchesSGB/7 and SGB/8. Switch SGB/7 gives a latch-ing function after a short-circuit, an earth-faultor an unbalance tripping. Switch SGB/8 pro-

Connections

7

Control signalsbetween themodules

The figure below schematically illustrates howthe starting, tripping, control and blocking sig-

nals can be programmed to obtain the requiredfunction of the protection relay.

IL1

IL2

IL3

SGR1 / 3SGR2 / 5

I>, Is

I>> t>>

t>, ts

to>, koIo>

Io

BS

SGB / 1

SGB / 2

SGB / 4

SGB / 5

SGB / 6

EXTERNAL TRIP

RELAY RESET

1

SGB / 7RESET+PROGRAM

1

SGB / 8RESET+PROGRAM

1

SS1

SS2

SPCJ 4D34

TS1

TS2

SS3

RESETTRIP

A

B

C

D

FIRF

ERESTARTENABLE

START /PRIOR ALARM

PRIOR ALARM /SIGNAL 2

SIGNAL1

TRIP

IRF

(AR2)

(AR1)

(AR3)

SPTU ___R2INTERNAL SIGNAL DIAGRAM

I ,tΘ

START

ia

t

Θ

∆I t∆

I< t<

RESTART INH.∑ts

SGR2 / 1SGR1 / 1

SGR2 / 4

SGR1 / 2

SGR1 / 4

SGR1 / 5

SGR2 / 6

SGR1 / 7

SGR2 / 8

SGR1 / 6SGR2 / 7SGR1 / 8

SGR2 / 3STALL

RESTART INH.

SGB / 3

SGR2 / 2

1

Θ>Θ

Θ>ΘΘ>Θ

SG4 / 3

SG4 / 2

6x

Fig. 4. Control signals between the modules of the motor protection relay SPAM 150 C.

the measuring relay module. The functions ofthe different switches are explained in the user´smanual of the measuring module SPCJ 4D34.

The functions of the blocking and starting sig-nals are selected with the switches of switchgroupsSGF, SGB and SGR. The checksums of theswitchgroups are found in the setting menu of

Abbreviations ofsignal names

IL1, IL2, IL3 Phase currentsI0 Neutral currentBS Blocking or control SignalSS1 Start Signal 1SS2 Start Signal 2SS3 Start Signal 3TS1 Trip Signal 1TS2 Trip Signal 2AR1...3 Auto-Reclose start signals (not in use in SPAM 150 C)IRF Internal Relay Fault signalSGF Switch Group for FunctionsSGB Switch Group for BlockingsSGR1...2 Switch Groups for Relay configuration

8

Operationindicators

B) If the display is dark when one of the protec-tion stages I>, I>> or I0> operates, the faultyphase or the neutral path is indicated with ayellow LED. If, for instance, the TRIP indi-cator glows red, and the indicators IL1 andIL2 at the same time are illuminated, over-current has occurred on phase L1 and L2.

C) Besides being a code number at data presen-tation, the leftmost red digit in the displayserves as a visual operation indicator. Anoperation indicator is recognized by the factthat the red digit alone is switched on. Nor-mally the first event to appear is indicated.For the thermal unit, however, a prior alarmsignal is later replaced by the trip indication,if tripping is carried out. In order to enablereading of actual thermal levels etc., it ispossible to acknowledge the indication ofthe thermal unit while the unit is still acti-vated. The same applies to a signalling earth-fault. In these cases the indications are memo-rized and reappear when the display is dark.All operation indicators are automaticallyreset when the motor is restarted. The fol-lowing table, named OPERATION IND.on the relay front panel, is a key to theoperation indicator code numbers used.

SPCJ 4D34

TRIP

PROGRAM

RESETSTEP

L1 L2 L3 o IRFIIII

956

SGR 1SGR 2

SGB

SGF

kc

θ< II %[ ]

tΣ s[ ]si

<t s[ ]

∆ tΣ s/h[ ]

s[ ]t ∆LII %[ ]∆

ot s[ ]

>>t s[ ]nI I/>>

nsI I/st s[ ]

nθI I/6xt s[ ]

p [ ]%

θa [ ]%θ i [ ]%

oI nI[ ]%

s

3I >>3I

RS 641 Ser.No.

SPAM 150 C

Uaux

SPCJ 4D34

REGISTERS OPER.IND.

0 0 0 0 0

12345678

n/L3

n/L1

n/L2

12345678

>>

o<

2

5

9 EXT.TRIP9

t %[ ]

%θ [ ]

955D

II

II

II

I

I

I

I

I

80...265V18...80V –

n = ( )II 5A1A

n =I ( )oI5A1A

oI nI

∆2

θaθ>

θ tθ>

θ

t i

i + tΣ si EINH+

I∆

θm %[ ]

min[ ]

I 2 t

%[ ]

%[ ]LI

tI 2s s

–~ NONC

fn = 50Hz

60Hz

A) The operation indicator TRIP is lit whenone of the protection stages operates. Whenthe protection stage resets, the red indicatorremains alight.

Indication Explanation

1 θ > θa = The thermal level has exceeded the set prior alarm level2 θ > θt = The thermal unit has tripped3 θ > θi, ∑tsi, = The thermal restart inhibit level is exceeded, the startup time

EINH counter is full or the external inhibit signal is active4 I>> = The high-set stage of the overcurrent unit has tripped5 ∆I = The unbalance/incorrect phase sequence protection unit has

tripped6 I2 x t = The start-up stall protection unit has tripped7 I0 = The earth-fault unit has tripped8 I< = The undercurrent unit has tripped9 EXT.TRIP = An external tripping has been carried out

D) The TRIP indications persist when the pro-tective stage returns to normal. The indica-tor is reset by pushing the RESET/STEPpush-button. A restart of the motor auto-matically resets the operation indications.

Further, the indicators may be reset via theexternal control input 10-11 by applying acontrol voltage to the input, provided thatthe switch SGB/6 is in position 1.

The basic protective relay functions are notdepending on the state of the operationindicators, i.e. reset or non-reset. The relay ispermanently operative.

E) In two minutes after the internal self-super-vision system has detected a permanent relayfault the red IRF indicator is lit and theoutput relay of the self-supervision systemoperates. Further, in most fault situations anautodiagnostic fault code is shown in thedisplay. The fault code is composed of a redfigure 1 and a green code number, whichindicates the fault type. The fault code cannot be reset as long as the fault persists.When a fault code appears on the display, thecode number should be recorded on a pieceof paper and given to the authorized repairshop, when overhaul is ordered.

9

To be able to operate the relay needs a securedauxiliary voltage supply. The power supplymodule forms the voltages required by the meas-uring relay module and the auxiliary relays. Thewithdrawable power supply and output relaymodule is located behind the system front panel,which is fixed by means of four cross-slottedscrews. The power supply and output relaymodule contains the power supply unit, alloutput relays, the control circuits of the outputrelays and the electronic circuitry of the externalcontrol inputs.

The power supply and output relay module canbe withdrawn after removing the system front

panel. The primary side of the power supplymodule is protected with a fuse, F1, located onthe PCB of the module. The fuse size is 1 A(slow).

The power supply unit is a transformer con-nected, i.e. galvanically isolated primary andsecondary side, flyback-type dc/dc converter. Itforms the dc secondary voltages required by themeasuring relay module; that is +24 V, ±12 Vand +8 V. The output voltages ±12 V and +24V are stabilized in the power supply module,while the +5 V logic voltage required by themeasuring relay module is formed by the stabi-lizer of the relay module.

1 A slow +8V

+12V

-12V

+24V

Uaux

80...265 V ac & dc18...80 V dc

Unstabilized logicsvoltage

Operation amplifier voltage

Output relay coilvoltage

Fig. 5.Voltage levels of the power supply module.

A green LED indicator Uaux on the system frontpanel is illuminated when the power supplymodule is in operation. The supervision of thevoltages supplying the electronics is placed inthe measuring module. If a secondary voltagedeviates from its rated too much, a self-supervi-sion alarm will be established. An alarm is alsoestablished when the power supply module iswithdrawn from the relay case, or when theauxiliary power supply to the relay is inter-rupted.

There are two versions of power supply andoutput relay modules available. For both types,the secondary sides and the relay configur-ations are identical, but the input voltage rangesdiffer.

Voltage ranges of the power supply modules:- SPTU 240R2 or SPTU 240R3 Uaux = 80...265 V dc/ac- SPTU 48R2 or SPTU 48R3 Uaux = 18...80 V dc

The modules SPTU 240 R2 or SPTU 240 R3can be used with both ac and dc voltages.Modules SPTU 48 R2 and SPTU 48 R3 aredesigned for dc supply only. The auxiliary volt-age range of the power supply module of therelay assembly is indicated on the system frontpanel.

The module SPTU 240R2 and SPTU 48R2have a normally open trip contact whereas themodules SPTU 240R3 and SPTU 48R3 have anormally closed trip contact.

Power supplyand output relaymodule

10

Energizing inputsPhase and neutral current inputs,terminals 1-2, 4-5, 7-8, 25-26 1-3, 4-6, 7-9, 25-27Rated current In 5 A 1 AThermal withstand capability- continuously 20 A 4 A- for 1 s 500 A 100 ADynamic current withstand, half-wave value 1250 A 250 AInput impedance < 20 mΩ < 100 mΩPhase current monitoring range 0...63 x InNeutral current monitoring range 0...210 % InRated frequency fn 50 Hz / 60 Hz

Output contact ratingsTrip contact and restart enable contactContact type *) NO (normally open) NC (normally closed)Terminals 65-66, 74-75 65-66- Rated voltage 250 V dc/ac 250 V dc/ac- Carry continuously 5 A 5 A- Make and carry for 0.5 s 30 A 10 A- Make and carry for 3.0 s 15 A 8 A- Breaking capacity for dc, when the control

circuit time-constant L/R ≤ 40 ms,at 48 / 110 / 220 V dc 5 A / 3 A / 1 A 1 A / 0.25 A / 0.15 A

Breaking capacity for ac 5 A 5 A

Signalling contactsTerminals 70-71-72, 68-69, 77-78, 80-81- Rated voltage 250 V dc/ac- Rated current 5 A- Make and carry for 0.5 s 10 A- Make and carry for 3.0 s 8 A- Breaking capacity for dc, when the control

circuit time-constant L/R ≤ 40 ms,at 48 / 110 / 220 V dc control circuit voltage 1 A / 0.25 A / 0.15 A

External control inputsBlocking, remote reset or remote setting input 10-11External control voltage level 18...265 V dc or 80...265 V acTypical control current of input circuit 2…20 mA

Power supply and output relay moduleSupply and relay module, type SPTU 240R2/ - R3 80...265 V dc/acSupply and relay module, type SPTU 48R2/ - R3 18...80 V dcPower consumption under quiescent/operatingconditions ~4 W/ ~6 W

Note!*) The trip contact 65-66 has different contact ratings depending on whether it is a normally open

contact (SPTU 240R2 or SPTU 48R2) or a normally closed contact (SPTU 240R3 or SPTU48R3).

Technical data(modified 2002-04)

11

Motor protection relay module SPCJ 4D34Thermal overload unitSetting of full load current, Iθ 0.5...1.50 x InResolution of current setting 0.01 x InSetting of maximum stall time, t6x 2.0...120 sResolution of stall time-setting 0.5 sCooling time-constant kc at zero current (standstill) 1...64 x the heating time constantThermal prior alarm level θa, if in use 50...100% of the thermal trip level θtRestart inhibit level θi 20...80% of the thermal trip level θtThermal unit initialization after an auxiliarysupply interrupt *) 70% of the thermal trip level θt,

i.e. hot motorLow-set overcurrent unit **)Setting range for I> 1.0...10.0 x InOperate time t> 0.3…80 s

Current based start-up supervision **)Startup current setting range Is 1.0...10.0 x InStartup time setting range ts 0.3…80 sShortest operate time ~300 ms

High-set overcurrent unitSetting range for I>> 0.5...20.0 x In and ∞, infiniteOperate time t>> 0.04...30 s

Earth-fault protection unitSetting range for I0 1.0...100% InOperate time t0 0.05...30 sAttenuation of the third harmonic, typ. -20 dB

Phase unbalance unitBasic sensitivity ∆I, stabilized to phase currentlevels below Iθ 10...40% x IL and ∞, infiniteOperate time at lowest settable pick-up level, 10 % 20...120 s, inverse timeOperate time at full unbalance (single phasing) 1 sOperate time incorrect phase sequence protection 600 ms

Undercurrent unitStart current I< in per cent of the full loadcurrent setting 30...80% Iθ or out of operationOperation inhibited below level 12% IθOperate time 2...600 s

Time-based start inhibit counterSetting range ∑tsi 5...500 sCountdown rate of start time counter ∆ts /∆t 2...250 s / h

Note!*) If the thermal prior alarm is set below 70%, the connection of the auxiliary supply to the relay

will cause a thermal prior alarm signal.

**)The operation can be defined either as a low-set definite time overcurrent function (SGF/7 = 0)or as a current based start-up supervision function (SGF/7=1). Both functions cannot be usedat the same time. In either case, the time-counting can be stopped by a control signal to the speedswitch input (SGB/1 =1).

12

Data transmissionTransmission mode Fibre optic serial busData code ASCIISelectable data transfer rates 4800 or 9600 Bd

Fibre optic bus connection modulefor supply from host relay- for plastic core cables SPA-ZC 21 BB- for glass fibre cables SPA-ZC 21 MMFibre optic bus connection module forsupply from separate power source- for plastic core cables SPA-ZC 17 BB- for glass fibre cables SPA-ZC 17 MM

Insulation Tests *)Dielectric test IEC 60255-5 2 kV, 50 Hz, 1 minImpulse voltage test IEC 60255-5 5 kV, 1.2/50 µs, 0.5 JInsulation resistance measurement IEC 60255-5 >100 MΩ, 500 Vdc

Electromagnetic Compatibility Tests *)High-frequency (1 MHz) burst disturbance testIEC 60255-22-1- common mode 2.5 kV- differential mode 1.0 kVElectrostatic discharge test IEC 60255-22-2 andIEC 61000-4-2- contact discharge 6 kV- air discharge 8 kVFast transient disturbance test IEC 60255-22-4and IEC 61000-4-4- power supply 4 kV- I/O ports 2 kV

Mechanical tests (tested with SPAJ 140 C)Seismic tests acc. to ANSI/IEEE C37.98-1987- operating basis earth-quake tests (OBE) 0.5…5.25 g- safe shut-down earth-quake tests (SSE) 0.5…7.5 gVibration test 2…13.2 Hz, ±1.0 mm

13.2…100 Hz, ±0.7 gShock/bump test acc. to IEC 60255-21-2 20 g, 1000 bumps/direction

Environmental conditionsCorrosion test Battelle-testSpecified ambient service temperature range -10...+55°CLong term damp heat withstand accordingto IEC 60068-2-3 <95% at 40°C for 56 dTransport and storage temperature range -40...+70°CProtection by enclosure according to IEC 60529,when the relay is panel mounted IP 54Mass of the relay including flush mountingrelay case ~3.5 kg

*) The tests do not apply to the serial port, which is used exclusively for the bus connection module.

13

When the protective relay is operating under theconditions specified in the section "Technicaldata", the relay is practically maintenance-free.The relay modules include no parts or compo-nents subject to an abnormal physical or electri-cal wear under normal operating conditions.

If the environmental conditions at the relayoperating site differ from those specified, as totemperature, humidity, or if the atmospherearound the relay contains chemically active gasesor dust, the relay ought to be visually inspectedin association with the relay secondary test orwhenever the relay modules are withdrawn fromthe case. At the visual inspection the followingthings should be noted:- Signs of mechanical damage on relay modules,

contacts and relay case- Accumulation of dust inside the relay cover or

case; remove by blowing air carefully- Rust spots or signs of erugo on terminals, case

or inside the relay

On request, the relay can be given a specialtreatment for the protection of the printed cir-cuit boards against stress on materials, caused byabnormal environmental conditions.

If the relay fails in operation or if the operatingvalues remarkably differ from those of the relayspecifications, the relay should be given a properoverhaul. Minor measures can be taken by per-sonnel from the instrument workshop of thecustomer’s company, e.g. replacement of auxil-iary relay modules. All major measures involv-ing overhaul of the electronics are to be taken bythe manufacturer. Please contact the manufac-turer or his nearest representative for furtherinformation about checking, overhaul and re-calibration of the relay.

Note!Numerical protection relays contain electroniccircuits which are liable to serious damage due toelectrostatic discharge. Before removing a mod-ule containing electronic circuits, ensure thatyou are at the same electrostatic potential as theequipment, for instance, by touching the relaycase.

Note!Static protective relays are measuring instru-ments and should be handled with care andprotected against moisture and mechanical stress,especially during transport.

Maintenanceand repair

Spare parts Motor protection relay module SPCJ 4D34

Power supply and output relay moduleUaux = 80...265 V ac/dc SPTU 240R2 for NO trip contactUaux = 18...80 V dc SPTU 48R2 for NO trip contactUaux = 80...265 V ac/dc SPTU 240R3 for NC trip contactUaux = 18...80 V dc SPTU 48R3 for NC trip contact

Relay box, complete with input module SPTK 4E3Input module as separate part SPTE 4E3Bus connection module SPA-ZC 17 or SPA-ZC 21

Orderingnumbers

Motor protection relay with make type tripping contactSPAM 150 C RS 641 014 - AA, CA, DA, FA

Motor protection relay with break type tripping contactSPAM 150 C RS 641 015 - AB, CB, DB, FB

The last letters of the ordering number indicate the rated frequency fn andthe auxiliary voltage range Uaux of the relay as follows:AA or AB equals fn = 50Hz and Uaux = 80…265 V ac/dcCA or CB equals fn = 50Hz and Uaux = 18…80 V dcDA or DB equals fn = 60Hz and Uaux = 80…265 V ac/dcFA or FB equals fn = 60Hz and Uaux = 18…80 V dc

Power supply and output relay modules with make type tripping contactSPTU 240R2 RS 941 021 - AASPTU 48R2 RS 941 021 - BAPower supply and output relay modules with break type tripping contactSPTU 240R3 RS 941 022 - AASPTU 48R3 RS 941 022 - BA