ABB Network Partner

User´s manual andTechnical description

SPER 1B1 C4 SPER 1C1 and 1C2

Supervision relay

OK

FAULT

=U c 40...265 V –=I c 1.5 mA

=U aux 40...265 V –

2

5

0291

B

SPER 1B1 C4

RS 485 004-AAMade in Finland

2

1MRS 750231-MUM EN

Issued 95-12-27Modified 97-09-03Version BCheckedApproved

Data subject to change without notice

StationAutomation

SPER 1B1 C4SPER 1C1 and 1C2

Supervision relay

Content Features .......................................................................................................................... 2Application ..................................................................................................................... 2Description of operation (modified 97-09) ...................................................................... 3Auxiliary voltage ............................................................................................................. 5Connection diagram ....................................................................................................... 6Connections ................................................................................................................... 7Technical data (modified 97-09) ...................................................................................... 8Applications (modified 97-09) ....................................................................................... 10Dimension drawings and mounting.............................................................................. 14Maintenance and repair ................................................................................................ 15Ordering information ................................................................................................... 15Spares and exchange parts ............................................................................................. 15Reference data .............................................................................................................. 15

Features Continuous monitoring of circuit breaker tripcircuits and other control circuits

Preset operate time preventing unwanted alarmsignals at circuit-breaker operation

Indication of relay operation with LED indica-tor on the front panel, output relay for signal-ling

Indicates bad contact, contact welding and aux-iliary voltage failures in the circuit monitored

Continuous self-supervision of the auxiliarysupply voltage of the relay

High immunity to interference and galvanicallyisolated electronics

COMBIFLEX design or base mounting, de-pending on relay type

Application SPER series supervision relays are used for moni-toring important control circuits such as circuitbreaker and disconnector control circuits, sig-nalling circuits, etc., in power installations. Onecontact circuit is monitored by one relay. If sev-eral branches of a circuit are to be monitored,the required number of relays can be connectedto the same control circuit.

The supervision relay detects interruptions, toohigh resistances caused by galvanically bad con-

nections, increased transfer resistance in thecontacts, welding of the control contact, dis-appearing control voltage and voltage failuresin the relay itself.

The relay is available in three versions: twoCOMBIFLEX versions with different supplyvoltage ranges, to be mounted in a rack, andone version provided with a base to be mountedon a rail or on a plane surface.

3

Description ofoperation(modified 97-09)

The supervision relay contains the followingfunctional units:- constant current generator- opto-isolator

- triggering circuit- time circuit- LED indicators- output relay

Fig. 1. Block diagram for supervision relay SPER 1B1 C4

Fig. 2. Block diagram for supervision relays SPER 1C1 and SPER 1C2

I

3 s

1

1

11

8

4

9

5

7

2+

10-

OKSPER 1B1 C4

3

FAULT

-

+

ALA

RM

Supply voltage

I

3 s

1

16

26

27

17

25

11

21

18+

28-

OKSPER 1C1

15

FAULT

+

-A

LAR

M

Supply voltage

The circuit to be monitored and the constantcurrent generator, the measuring circuit and thechange-over contacts of the output relay are

galvanically isolated from each other, isolationlevel 2 kV, 50 Hz, 1 min.

4

Fig. 3. Current and voltages of the circuit monitored. For further information about relay typessee next page

-

+

7

5

I

SPER 1B1 C4

+

-

f

Rc

Uc

Ic≈ 1.5 mA

≥40 Vdc

I

The constant current generator (I) of the drivercircuit feeds a small Ic current of some 1.5-5mA, depending on the relay type used, throughthe circuit to be monitored. The contact inputs5-7 of SPER 1B1 C4 or 11-21 of SPER 1C1 orSPER 1C2 are connected over the NO controlcontact (f ) and so the measuring current flowsbetween the poles of the control voltage (see Figs1, 2 and 3).

To avoid spurious CB tripping, for instance, inthe event of a short circuit in the control cir-cuit, the constant current generator circuit ofSPER 1B1 C4 contains an internal current lim-iting series resistor. The relays type SPER 1C1and SPER 1C2 are not provided with such aresistance.

To secure operation, the control voltage over thedriver circuit is not allowed to fall below 40 Vdc for SPER 1B1 C4 and SPER 1C1 type re-lays. For the SPER 1C2 relay the minimumcontrol voltage is 20 V dc.

The control voltage over the driver circuit canbe calculated using the following expression:

Uc - (Rc x Ic) > 40 V dc for SPER 1B1 C4 andSPER 1C1 orUc - (Rc x Ic) > 20 V dc for SPER 1C2,

whereUc = control voltageIc = measuring currentRc = resistance of the coil controlled

5

The measuring current is measured by an opto-isolator circuit in the measuring circuit of therelay. In normal service the green LED "OK"on the front panel is lit and the output relay ofSPER 1B1 C4 is operated, the change-over con-tacts 1-3 and 9-11 being closed. In the sameway the output relay of SPER 1C1 and SPER1C2 is operated, and the change-over contacts15-16 and 25-26 are closed. Should the controlvoltage fall below the minimum value permit-

ted due to interruption, unreliable connectionor activated trip contact, the output relay willdrop off when a time delay of about 3 s hasexpired. The red LED indicator "FAULT" is lit,the green LED indicator "OK" goes out andthe contacts 1-4 and 8-11 of SPER 1B1 1B1C4 close. The output relay of the relays SPER1C1 and SPER 1C2 operates in the same man-ner and the contacts 16-17 and 26-27 are closed.

Fault situations Table 1. Faults normally detected by the supervision relays.

Type of fault Fault reason

The circuit monitored is interrupted or Broken wire, incorrect control operation,the resistance in the circuit increases. galvanically bad contact, increased contact

resistance, etc.

The voltage over the circuit monitored A fuse has blown, battery failure, etc.disappears.

Failure in the auxiliary voltage supply. See section "Auxiliary voltage" later in the text.

The NO contact of the monitored circuit, Contact welding if the tripping protectionthrough which the supervision relay is relay does not reset in time.connected, remains closed longer thanrequired for the operation.

Auxiliary voltage To operate the supervision relay needs a con-tinuous auxiliary voltage. The supply voltagerange of the relays type SPER 1B1 C4 and SPER1C1 is 40-265 V dc, whereas that of the relaytype SPER 1C2 is 20-60 V dc. In general, theauxiliary supply voltage and the voltage of thecircuit monitored are identical. The circuits aregalvanically separated. Separate voltage sourcescan be used for the auxiliary voltage supply tothe relay and for the voltage of the circuit moni-tored.

The driver circuit of the relay operates independ-ently of the measuring circuit and the outputcircuit so different voltage levels are permitted.Should the auxiliary voltage supply be inter-rupted, the indicator LEDs of the supervisionrelay go out and the change-over contacts of theoperated output relay operate without time de-lay in the measuring circuit. The contact op-eration of the relay is the same as for a fault inthe circuit monitored.

The supervision relay can be connected to re-ceive the supply voltage from the control cir-cuit monitored, over the connection wires ofthe driver circuit. A condition, however, is thatthe control coil of the circuit monitored is notaffected by the increased current consumptionof about 7-16 mA, depending on the type ofsupervision relay, and that the residual voltageover the circuit monitored is above 40 V dcwhen SPER 1B1 C4 or SPER 1C1 is used and20 V dc, when SPER 1C2 is used.

To be noted!With the voltage supply described above thesupervision relay operates instantaneously andthe red LED indicator "FAULT" remains dark.An undelayed alarm signal is obtained via theoutput relay, also at normal control contact op-eration.

The connection of the auxiliary voltage supplyfor the different types of supervision relay is il-lustrated in Figs 4 and 5 and in Table 2 in thesection "Connections"

6

Connectiondiagram

Fig. 4. Supervision relay SPER 1B1 C4 receiving its auxiliary voltage from the control circuit andthe monitored circuit

I

3 s

1

5

7

2+

10-

SPER 1B1 C4

-

+

-

+

f

Rc

Supply voltage

Fig. 5.Supervision relay SPER 1B1 C4 supplied from a separate voltage source

I

3 s

1

5

7

2+

10-

SPER 1B1 C4

-

+

-

+

f

Rc

+

-

Supply voltage

It should be noted that the connection for therelays SPER 1C1 and SPER 1C2 is the samebut for the terminals used, see "Connections".

7

Connections Table 2. Connection of relays SPER 1B1 C4, SPER 1C1 and SPER 1C2.

Relay type Terminal No. Function

SPER 1B1 C4 2 (+) and 10 (-) Supply voltage 40-265 V dc.The positive pole (+) of the dc voltage is connected toterminal 2.

SPER 1C1 18 (+) and 28 (-) Supply voltage 40-265 V dc.The positive pole (+) of the dc voltage is connected toterminal 18

SPER 1C2 18 (+) and 28 (-) Supply voltage 20-60 V dc.The positive pole (+) of the dc voltage is connected toterminal 18

SPER 1B1 C4 5 (+) and 7 (-) Voltage of the circuit monitored (control circuit)40-265 V dc.The positive pole (+) of the dc voltage supply is connectedto terminal 5.

SPER 1C1 11 (+) and 21 (-) Voltage of the circuit monitored (control circuit)40-265 V dc.The positive pole (+) of the dc voltage supply is connectedto terminal 11.

SPER 1C2 11 (+) and 21 (-) Voltage of the circuit monitored (control circuit)20-60 V dc.The positive pole (+) of the dc voltage supply is connectedto terminal 11.

SPER 1B1 C4 1 - 3 - 4 and Output relay with two change-over contacts.8 - 9 - 11 The relay operates on the closed circuit principle and in

normal duty the contacts 1 - 3 and 9 - 11 are closed.When a fault occurs, the contacts 1 - 4 and 8 - 11 of theoutput relay are closed.

SPER 1C1 and 15 - 16 - 17 and Output relay with two change-over contacts.SPER 1C2 25 - 26 - 27 The relay operates on the closed circuit principle and in

normal duty the contacts 15 - 16 and 25 - 26 are closed.When a fault occurs, the output relay contacts 16 - 17and 26 - 27 close.

8

Technical data(modified 97-09)

Circuit monitoredVoltage of the circuit monitored- SPER 1B1 C4 and SPER 1C1 40-265 V dc- SPER 1C2 20-60 V dcMeasuring current- SPER 1B1 C4 and SPER 1C1 1.5 mA, typ.- SPER 1C2 5 mA, typ.Min. residual voltage over the circuit monitored- SPER 1B1 C4, terminal 5-7 >40 V dc- SPER 1C1, terminal 11-21 >40 V dc- SPER 1C2, terminal 11-21 >20 V dc

Typical resistance of current limiting resistorin the control circuit at different voltage levelsSPER 1B1 C4 and SPER 1C1 (SPE-ZR3)- 48 V dc 1.2 kΩ/4 W- 60 V dc 5.6 kΩ/4 W- 110 V dc 22 kΩ/4 W- 220 V dc 28.8 kΩ or (33 kΩ)/4 WSPER 1C2 (SPE-ZR4)- 30 V dc 680 Ω/4 W- 48 V dc 2.2 kΩ/4 W

Time circuitOperate delay, typ. 3 sReset time, typ 1 s

Auxiliary supply voltage and currentSPER 1B1 C4 and SPER 1C1- rated voltage Un 48/60/110/220 V dc- operation voltage 40-265 V dcSPER 1C2- rated voltage Un 24/48 V dc- operation voltage 20-60 V dcCurrent drain, typ.- SPER 1B1 C4 and SPER 1C1 7 mA- SPER 1C2 16 mA

Output relayContact outputs, change-over contact- SPER 1B1 C4 1-3-4/8-9-11- SPER 1C1 and SPER 1C2 15-16-17/25-26-27Rated voltage 250 V ac/dcCarry continuouslyBreaking capacity for dc when the control circuittime constant L/R ≤ 40 ms at the control voltage levels- 220 V dc 0.15 A- 110 V dc 0.25 A- 48 V dc 1 A

9

Test voltagesInsulation test voltage acc. to IEC 255-5 and SS436 15 03 2 kV, 50 Hz, 1 minImpulse test voltage acc. to IEC 255-5 and SS 436 15 03 5 kV, 1.2/50 µs, 0.5 J

Disturbance testsHigh-frequency test voltage acc. to 255-5 andSS 436 15 03 2.5 kV, 1 MHzFast transients acc. to IEC 801-4 2 kV, 5/50 ns, 1 min.Spark interference test voltage acc. to SS 436 15 03 4-8 kV

Environmental conditionsService temperature range -10°C-+55°CTransport and storage temperature range (IEC 68-2-2) -40°C-+70°CDamp heat test (IEC 68-2-30) RH = 92-96%

+25°C/+55°C, 6 x 24 h

Mounting and weightDegree of protection by enclosure Not specifiedMounting- SPER 1B1 C4 11-pole base for rail mounting acc.

to DIN 50022, or screw fastening- SPER 1C1 and SPER 1C2 COMBIFLEX design, mounting

space 2U-6UWeight- SPER 1B1 C4 about 0.2 kg- 11-pole base about 0.05 kg- SPER 1C1 and SPER 1C2 about 0.2 kg

10

Applications One supervision relay is able to monitor onecircuit. When separate, parallel contact circuitsof the same control circuit are to be monitored,

each of these circuits has to be provided with itsown relay.

Example 1

-

Rc

+

f

I

5

7

SPER 1B1 C4

-

+

f

I

5

7

SPER 1B1 C4

-

+

f

I

5

7

SPER 1B1 C4

-

+

~1 mA ~1 mA ~1 mA

n x ~1 mA

1 2 n

Fig. 6. Monitoring of parallel contact circuits with separate supervision relays

When the supervision relays are connected inparallel, it should be noticed that each relaydrives a current of about 1.5-5 mA, dependingon the type of relay used, through the controlcircuit monitored. The currents are summedup in the trip or relay coil controlled by the cir-cuit. To avoid the operation of the control relaycoil being affected by these currents, the numberof parallel supervision relays has to be limited.The voltage drop over the control coil increaseswith the number of supervision relays connectedin parallel. The voltage drop has to be kept on

such a level that the difference between the aux-iliary voltage of the control circuit and the volt-age drop over the control coil, that is, the re-sidual voltage over the circuit monitored, is be-low 40 V dc or 20 V dc, depending on the relaytype used.

Lower voltage values are an indication of a faultin the circuit, for instance, poor galvanic con-tact, and will produce an alarm signal via thecontact of the output relay.

-

7

5

f1 f2 fn

~1.5 mA

+

I

SPER 1B1 C4

+

-

Rc

Fig. 7. Simplified supervision of parallel contact circuits using one common supervision relay

Example 2

11

To a certain extent, the number of supervisionrelays can be reduced by parallelling the con-tacts of the control circuit as illustrated in ex-ample 2. Then the wiring of the installation

should be carried out accordingly. Unless thesystem is continuously supervised, this methodreduces the reliability of the system.

Example 3 When the control circuit includes two or moreNO contacts in series, the supervision relay isconnected over all of the contacts. The supervi-sion relay is connected to the plus pole (+) ofthe control voltage at the first of the contactsand to the control coil side at the last of thecontacts in series, see Fig. 8. The circuit betweenthe contacts will not, however, be monitored inthis application of the relay.

-

+

7

5

I

SPER 1B1 C4

+

-

f2

Rc

Ic≈ 1.5 mA

If1

Fig. 8. Monitoring of a control circuit with se-ries-connected contacts using one supervisionrelay

Example 4(modified 97-09)

whereUc = control voltageIc = measuring currentRc = resistance of the coil controlled andn = number of relays connected in series

To achieve the same operate time for each su-pervision relay the auxiliary voltage for the sepa-rate relays and the voltage of the circuit moni-tored (control voltage of the series connection)should be supplied from the same source.

If the control voltage of the circuit monitoredis high enough, several supervision relays canbe connected in series in the same circuit, asillustrated in Fig. 9 above. With such a connec-tion all the control contacts connected in seriesare monitored. Then the control voltage has tobe high enough to prevent the residual voltagedistributed between the separate series-con-nected circuits from falling below 40 V dc or20 V dc at a 1.5-5 mA current flowing throughthe control coil.

The control voltage through a separate drivercircuit can be calculated using the followingexpression:

Uc - ( Rc x Ic ) n

for SPER 1B1 C4 and SPER 1C1 or

Uc - ( Rc x Ic ) n

for SPER 1C2,

≥ 40 V ls

≥ 20 V ls

12

-

+

7

5

I

+

-

f1

Rc

Ic≈ 1.5 mA

≥40 Vdc

I

7

5

I

SPER 1B1 C4

+

-

If2 ≥40 Vdc

Ic≈ 1.5 mA

Fig. 9. Monitoring of a control circuit with series-connected contacts and one relay for eachcontrol contact

Example 5

Fig. 10. Two supervision relays in serieswith series-connected contacts with self-holding.

I

3 s

1

1

11

8

4

9

5

7

2+

10-

OKSPER 1B1 C4

+

3

FAULT

f

+

-

I

3 s

1

1

11

8

4

9

5

7

2+

10-

OKSPER 1B1 C4

3

FAULT

+

-

-

h1 h2

Supply voltage

ALARM

Supply voltage

13

For breaking the control voltage the circuitbreaker control circuit includes an auxiliary con-tact (h1) connected in series with the controlcoil.

To prevent the supervision relay from provid-ing spurious alarm signals, for instance, at cir-cuit breaker operation, the measuring currentof the control circuit is routed so as to by-passthe break contact (h1), through the auxiliarycontact (h2) and a current limiting resistor Ry.

The resistance is calculated so that the currentover the auxiliary contact and the resistor doesnot affect the operation of the control coil, whenthe control contact is closed. The voltage dropover the resistor and the coil must be lowenough, to prevent the residual voltage over thedriver circuit of the supervision relay from fall-ing below the minimum values specified for thedifferent relay types.

The external current limiting resistor Ry is de-pending on the auxiliary voltages of the super-vision relays. The resistances for the most com-monly used voltages are given in "Technicaldata".

Fig. 11. Supervision relay with an auxiliary contact (h) and an external current limiting resistor Ry.

I>

I

3 s

1

1

11

8

4

9

5

7

2+

10-

OKSPER 1B1 C4

+

-

h1

Ry *)

h2

3

FAULT

f

+

-

*) Current limiting resistor

ALA

RM

Supply voltage

Example 6

14

Dimensiondrawing andmounting

The supervision relay is available in three ver-sions: SPER 1B1 C4, SPER 1C1 and SPER1C2. The relay type SPER 1B1 C4 is enclosedin a plastic case provided with an 11-pole ter-minal base with screw terminals for the con-nections. The base is fitted on a rail (DIN50022) or screwed to a plane surface. The ter-minal base meets the same requirements con-cerning insulation test voltage as the supervi-sion relay.

The relay types SPER 1C1 and SPER 1C2 aredesigned for COMBIFLEX mounting. The re-lays require a mounting height correspondingto 2U (1U = 44.45) and a mounting width cor-responding to 6C (1C = 7 mm). Separate ter-minal bases to be mounted in an apparatus frameor on a rail in a frame, are used for connectingthe relays. The frames and the terminal basesare part of the COMBIFLEX system and areavailable on separate order.

Supervision relay SPER 1B1 C4

Dimensions in mm.Width = 38.5 mm

90

103

(~3,5)

~115*)

36 (

DIN

462

77)

38,5

65,5

*) Depends on the type of the base

Dimensions

(2 x 1,5 mm2)

1 x 2,5 mm2

8 4

7 6 5

9 310 211 1

657

8 4

9 3

10 2

11 1

675

4 8

3 9

2 101 11

Terminal base Pin arrangement

15

Maintenanceand repairs

When the supervision relay is used under theconditions specified in "Technical data", it re-quires practically no maintenance. The relayincludes no parts or components that are sensi-tive to physical or electrical wear under normaloperating conditions and the input and outputcircuits are galvanically separated from the otherelectronic circuitry of the relay.

Should the temperature and humidity at theoperating site differ from the values specified,or the atmosphere contain chemically activegases or dust, the relay should be visually in-spected in association with the secondary test-ing of the relay. This visual inspection shouldfocus on:

- Signs of mechanical damage to relay case andterminals

- Collection of dust inside the relay case or onterminal bases; remove with compressed air

- Signs of corrosion on terminals, case or ter-minal bases

If the relay malfunctions or the operating val-ues differ from those specified, the relay shouldbe overhauled. Minor measures can be takenby the customer but any major repair involvingthe electronics has to be carried out by themanufacturer. Please contact the manufactureror his nearest representative for further infor-mation about checking, overhaul and recali-bration of the relay.

Note!Protective relays are measuring instruments andshould be handled with care and protectedagainst moisture and mechanical stress, espe-cially during transport.

Orderinginformation

Please state:

Type Auxiliary voltage Order number

SPER 1B1 C4 Supervision relay 40-265 V dc RS 485 004-AASPER 1C1 Supervision relay 40-265 V dc RS 485 002-AASPER 1C2 Supervision relay 20-60 V dc RS 485 003-AA

PC-XL2 Terminal base for SPER 1B1 C4 RS 961 051-AA

When required, current limiting resistorSPE-ZR3 for SPER 1B1 and SPER 1C1 RS 961 015-AASPE-ZR4 for SPER 1C2 RS 961 015-AA

Quantity

Spares andexchange parts

Type Order number

PC-XL2 Terminal base for SPER 1B1 C4 RS 961 051-AA

COMBIFLEX mounting, see "Relay mounting systems", data sheet 1MDB14003-EN inBuyer’s Guide.

Reference data Buyer’s Guide 1MDC92-WEN Mounting Systems 1MDB14000-ENRelay mounting systems 1MDB14003-ENDimensions 1MDB14005-EN

ABB Transmit OyRelays and Network ControlP.O.Box 699FIN-65101 VAASAFinlandTel. +358 (0)10 22 4000Fax. +358 (0)10 22 41094

1MR

S 7

5023

1-M

UM

EN

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