Ser.No. n = n = SPAJ 140 C aux SPCJ 4D29 REGISTERS OPER.IND. 0000 0 1 2 3 4 5 6 7 8 n / L3 n / L1 n / L2 max (15min) on / 1 2 3 4 5 6 7 8 > START > TRIP > > TRIP > > START > o START > > o START > o TRIP > > o TRIP 9 % )( > % )( >> () > o % ( o ) % >> CBFP9 t t t t [] [] [] [] I 0074A I ( ) I ( ) o I I I I I I I I I I I I I I I I I I I I I n I / I 80 265V ~ – 18 80V – 5A1A 1A 5A 2 5 U f n = 50Hz 60Hz RS 611 006 - [ SGR SGB SGF SPCJ 4D29 TRIP PROGRAM RESET STEP L1 L2 L3 0 IRF 3 > I I I II I > n I I / k s > t ] n > > I I / s > > [] t s > k [] t n 0 > I I / s > > o t [] n > > o I / I 0012A 0 0 SPAJ 140 C Overcurrent and earth-fault relay User´s manual and Technical description 2 SPAJ 140 C Combined overcurrent and earth-fault relay Contents Features 2 Application 2 Description of operation 3 Connections (modified 2003-09) 4 Signal diagram 7 Signal abbreviations 7 Start and operation indicators 8 Power supply and output relay module 9 Technical data (modified 2007-02) 10 Maintenance and repairs 13 Spare parts 13 Dimensions and instructions for mounting 14 Order information 14 The complete manual for the relay SPAJ 140 C contains the following submanuals: General relay description for SPAJ 140 C 1MRS 750629 General characteristics of D type relay modules 1MRS 750066-MUM EN Combined overcurrent and earth-fault relay module type SPCJ 4D29 1MRS 750119 Features Three-phase, low-set phase overcurrent unit with definite time or inverse definite minimum time (IDMT) characteristic Three-phase, high-set phase overcurrent unit with instantaneous or definite time function Low-set, non-directional earth-fault unit with definite time or inverse definite minimum time (IDMT) characteristic High-set, non-directional earth-fault unit with instantaneous or definite time function Built-in breaker failure protection function Two heavy-duty and four light-duty output relays with field-selectable configuration Extensive data communication capabilities over built-in serial port Outstanding design flexibility for easy selection of appropriate operation schemes for different applications Numerical display of setting values, measured values, memorized fault values, fault codes etc. Enhanced system reliability and availability due to continuous hardware and software self-super- vision with auto-diagnosis Powerful software support for setting and parametrizing of the relay and for recording of relay parameters with a portable PC. The combined overcurrent and earth-fault relay SPAJ 140 C is intended to be used for the selective short-circuit and earth-fault protection of radial feeders in solidly earthed, resistance earthed or impedance earthed power systems. The integrated protection relay includes a phase overcurrent unit and an earth-fault unit with flexible tripping and signalling facilities. The overcurrent and earth-fault relays can also be used inother applications requiring single-, two- or three-phase overcurrent protection and non- directional earth-fault protection. The com- bined overcurrent and earth-fault relay also fea- tures circuit breaker failure protection. Application 1MRS 750629 Issued 1997-01-30 Modified 2007-02-26 Version D Data subject to change without notice 3 Description of operation The combined overcurrent and earth-fault relay is a secondary relay to be connected to the current transformers of the protected object. The three-phase overcurrent unit and the earth- fault unit continuously measure the phase cur- rents and the neutral current of the protected object. On detection of a fault the relay starts, trips the circuit breaker, initiates auto-reclosing, provides alarm, records fault data etc. in accord- ance with the application and the configured relay functions. When the phase current exceeds the set start current of the low-set stage I>, the overcurrent unit starts delivering a start signal after a preset ~60 ms start time. When the set operate time at definite time operation or the calculated operate time at inverse time operation elapses, the over- current unit operates. In the same way the high- set stage I>> of the overcurrent unit starts deliv- ering a start signal after a preset ~40 ms start time, when the set start current is exceeded. When the set operate time elapses, the overcur- rent unit operates. When the earth-fault current exceeds the set start current of the low-set stage I 0 >, the earth- fault unit starts delivering a start signal after a preset ~60 ms start time. When the set operate time at definite time operation or the calculated operate time at inverse time operation elapses, the earth-fault unit operates. In the same way the high-set stage I 0 >> of the earth-fault unit starts delivering a start signal after a preset ~40 ms start time, when the set start current is exceeded. When the set operate time elapses, the earth-fault unit operates. The low-set stage of the overcurrent unit and the low-set stage of the earth-fault unit may be given definite time or inverse definite minimum time (IDMT) characteristic. When the IDMT char- acteristic is chosen six time/current curves are available. Four of the curves comply with the BS 142 and IEC 60255 and are named "Normal inverse", "Very inverse", "Extremely inverse" and "Long-time inverse". The two additional inverse time curves called the "RI-curve" and the "RXIDG-curve" are also provided. By appropriate configuration of the output relay matrix, the start signals of the overcurrent and earth-fault units are obtained as contact func- tions. The start signals can be used for blocking co-operating protection relays, for signalling and for initiating auto-reclosing. The relay includes one external binary input, which is controlled by an external control volt- age. The function of the control input is deter- mined by selector switches in the protection relay module. The control input can be used for blocking the operation of one or more protec- tion stages, for resetting a latched output relay in the manual reset mode or for enforcing a new set of relay setting parameters by remote control. Fig. 1. Protection functions of the combined overcurrent and earth-fault relay type SPAJ 140 C. THREE PHASE DEFINITE TIME OR INVERSE TIME LOW-SET OVERCURRENT PROTECTION SERIAL COMMUNICATION PORT TRIP SIGNAL 1 SERIAL I/O IL1 IL2 IL3 Io BLOCKING OR RESET THREE PHASE INSTANTANEOUS OR DEFINITE TIME HIGH-SET OVERCURRENT PROTECTION INSTANTANEOUS OR DEFINITE TIME HIGH-SET EARTH-FAULT PROTECTION REMOTE RESET, REMOTE SETTING CONTROL OR BLOCKING INPUT FOR THE DIFFERENT CURRENT STAGES SIGNAL 2 START 1 IRF START 2 CIRCUIT BREAKER FAILURE PROTECTION DEFINITE TIME OR INVERSE TIME LOW-SET EARTH-FAULT PROTECTION 51 50 51 N 51BF 50 N 4 Connections (modified 2003-09) Fig. 2. Connection diagram for the combined overcurrent and earth-fault relay type SPAJ 140 C. 6162 SPAJ 140 C 63 25 26 27123456 789 1 A 5 A L1 L2 L3 70 71 72 0 65 66 U + (~) - (~) 3I> 3I>> Io> Io>> IRF I/O 68 6977 78 IRF SIGNAL 2 - + TRIP 74 75 START 1 80 81 1011 SGB/1 SGB/2 SGB/3 SGB/4 SGB/6 SGB/7 SGB/5 LATCHING SIGNAL 1START 2 RESET I - I 0 + + + B + C + F + E + D + A U1 1 1 T2 T4 T6 T8 T1 T3 T5 T7 RC SETTINGS SGB/8 SGF/4 0.1 1s SGR2/8 SGR1/6 SGR1/8 SGR1/2 SGR1/4 U3 TRIP R U2 U1 T9 TS2SS3SS2SS1TS1 SPA-ZC_ Rx Tx SERIAL PORT +- 1 A 5 A 1 A 5 A 1 A 5 A SGR2/6 SGR2/4 SGR2/2 1 SGR2/7 SGR2/5 SGR2/3 SGR2/1 1 SGR1/7 SGR1/5 SGR1/3 SGR1/1 1 SGR3/8 SGR3/7 SGR3/6 SGR3/5 SGR3/4 SGR3/3 SGR3/2 SGR3/1 aux ~ EXTERNAL CONTROL 5 U aux Auxiliary voltage A, B, C, D, E, F Output relays IRF Self-supervision SGR Switchgroups for the configuration of the output relays SGB Switchgroup for the configuration of the blocking or control signal TRIP Trip output relay SIGNAL 1 Signal on operation of the overcurrent unit SIGNAL 2 Signal on operation of the earth-fault unit START 1 Starting or auxiliary trip signal as selected with switchgroup SGR3 START 2 Start signal of the low-set overcurrent stage I> U1 Overcurrent and earth-fault relay module SPCJ 4D29 U3 Input module SPTE 4E1 U2 Power supply and output relay module SPTU 240 R1 or SPTU 48 R1 T1…T9 Start and operation indications SERIAL PORT Serial communication port SPA-ZC_ Bus connection module Rx/Tx Receiver bus terminal (Rx) and transmitter bus terminal (Tx) of the bus connection module Fig. 3. Terminal arrangement of the overcurrent and earth-fault relay type SPAJ 140 C. 68 69 77 78 80 81 Made in Finland 1 2 3 4 5 6 7 8 9 25 26 27 61 62 63 65 66 74 75 70 71 72 10 11 Serial Port SPA 6 The energizing currents of the overcurrent unit are connected to terminals 1-2, 4-5 and 7-8, when the rated current of the CT secondary circuits is I n = 5 A. When the rated current of the CT secondary circuits is I n = 1 A, terminals 1-3, 4-6 and 7-9 are used. The relay can also be used in single-phase or two-phase applications sim- ply by leaving one or two energizing inputs unoccupied. In single-phase applications the same energizing current can be routed through two energizing inputs, which may increase the operating speed of the overcurrent unit, espe- cially at instantaneous operation. The energizing current for the earth-fault unit is connected to terminals 25-26 when the rated current I n = 5 A and to terminals 25-27 when the rated current I n = 1 A. The control input 10-11 can be used in three different ways, i) as control input for an external blocking signal, ii) as the control input for unlatching the trip relay, or iii) as the control input for the remote control of relay settings. The requested function is selected by means of switches switchgroup SGB in the main menu of the protection relay module. The auxiliary supply voltage of the relay is connected to terminals 61-62. At d.c. supply the positive lead is connected to terminal 61. The level of the voltage to be applied to the terminals depends on the type of power supply and output relay module inserted in the relay. For further details see the description of the power supply module. The permitted auxiliary voltage range of the relay is marked on the relay front panel. Output relay A is a heavy-duty trip relay capable of controlling most circuit breakers. The oper- ate signals of the different protection stages are routed to the trip relay with switches 2,4,6 and 8 of switchgroup SGR1. On delivery from the factory all the protection stages are routed to the trip relay. A latching of the output relay A can be selected with switches 6 and 7 of switchgroup SGB. Output relays B and C can be used for signalling on operation of the relay module. The signals to be routed to the output relays B and C are selected with switches1 8 of switchgroup SGR2. The switch matrixes for routing operate signals to the output relays B and C are identical. Normally output relay B is used for signalling on operation of the overcurrent unit and C for signalling on operation of the earth-fault unit. This is also the default setting of the relay on delivery from the factory. The start signals of the protection stages of the relay are routed to output relay D. The signals to be routed to output relay D are selected by means of switches 1, 3, 5 and 7 of switchgroup SGR1, which is a software switchgroup found in the main menu of the protection relay module. The start signals of the low-set and high-set stage of the overcurrent unit are selected with switches 1 and 3, and the start signals of the high-set and low-set stage of the earth-fault unit with switches 5 and 7. The output relay E is a heavy-duty relay as output relay A. It can be controlled by the start and operate signals of the protection stages. Output relay E is also used a trip relay for the circuit breaker failure protection (CBFP), when the CBFP protection is used. In this case the trip signal can be used either to control a circuit breaker upstreams or to control a second trip coil on the main circuit breaker to increase the redundancy of the circuit breaker. Output relay F functions as output relay for the self-supervision system of the protection relay. The F relay is energized under normal operating conditions and contact gap 70-72 is closed. If a fault is detected by the self-supervision system, or on loss of auxiliary supply, the output relay drops off and the NO contact 71-72 closes. By means of bus connection modules type SPA -ZC17 and SPA-ZC21 the relay connects to the fibre-optic SPA bus via a 9-pole, D-type subminiature connector located at the rear panel of the relay. The terminals of the fibre-optic cables are connected to the counter terminals Rx (receiver) and Tx (transmitter) of the bus con- nection module. The fibre-optic cables are linked from one relay to another and to the substation level communication unit, for instance type SRIO 1000M. 7 be configured to obtain the required protection functions. SGR3 / 6 SGR1 / 8 IL1 IL2 IL3 SGR3 / 1 SGR1 / 1 SGR3 / 2 SGR2 / 1 SGR2 / 2 SGR1 / 2 SGR3 / 3 SGR1 / 3 SGR3 / 4 SGR2 / 3 SGR2 / 4 SGR1 / 4 SGR3 / 5 SGR1 / 5 SGR2 / 5 SGR2 / 6 SGR1 / 6 SGR3 / 7 SGR1 / 7 SGR3 / 8 SGR2 / 7 SGR2 / 8 I> I>> t>> t>, k to>, ko Io> to>> Io>> Io BS SGB / 1 SGB / 2 SGB / 3 SGB / 4 SGB / 5 SGB / 8 REMOTE SETTINGS RELAY RESET 1 SGB / 6 RESET+ PROGRAM 1 SGB / 7 RESET+ PROGRAM 1 1 1 SGF1 / 4 SS1 SS2 SPCJ 4D29 TS1 TS2 SS3 RESET TRIP 0.1 1s A B C D F IRF E START 1 START 2 SIGNAL 1 SIGNAL 2 TRIP IRF (AR2) (AR1) (AR3) SGF2 / 8 SGF2 / 7 SPTU ___R1 REDUCED BLOCK DIAGRAM Fig. 4. Signal diagram of the combined overcurrent and earth-fault relay type SPAJ 140 C The functions of the blocking and start signals are selected with the switches of switchgroups SGF, SGB and SGR. The checksums of the switchgroups, are found in the setting menu of the protection relay module. The functions of the different switches are explained in detail in the user´s manual of the protection relay mod- ule SPCJ 4D29. Signal diagram The figure below schematically illustrates how the start, trip, control and blocking signals can I L1 , I L2 , I L3 Energizing current of phase L1, L2 and L3 I 0 Neutral current (Residual current) BS Blocking or control signal SS1 Start signal 1 SS2 Start signal 2 SS3 Start signal 3 TS1 Operate signal 1 (Trip signal 1) TS2 Operate signal 2 (Trip signal 2) BS Blocking signal AR1 3 Auto-reclose start signals (not in use in relay SPAJ 140 C) IRF Internal relay failure SGF Switchgroup for functions SGB Switchgroup for blockings SGR Switchgroup for relay configuration Signal abbreviations 8 Operation indicators A) The indicator TRIP is lit when one of the protection stages operates. When the protec- tion stage resets, the red indicator remains lit. B) If the display is dark when one of the protec- tion stages I>, I>>, I 0 > or I 0 >> operates, the faulty phase or the neutral circuit is indicated with a yellow LED. If, for instance, the TRIP indicator glows red, and the indicators I L1 and I L2 at the same time are lit, overcurrent has occurred on phase L1 and L2. C) Besides being a code number at data presen- tation, the leftmost red digit in the display serves as a visual operation indicator. An operation indicator is recognized by the fact that the red digit alone is switched on. The following table named OPERATION IND. on the relay front panel is a key to the function code numbers used. Ser.No. n = n = SPAJ 140 C aux SPCJ 4D29 REGISTERS OPER.IND. 0000 0 1 2 3 4 5 6 7 8 n / L3 n / L1 n / L2 max (15min) on / 1 2 3 4 5 6 7 8 > START > TRIP > > TRIP > > START > o START > > o START > o TRIP > > o TRIP 9 % )( > % )( >> () > o % ( o ) % >> CBFP 9 t t t t [] [] [] [] I 0074A I ( ) I ( ) o I I I I I I I I I I I I I I I I I I I I I n I / I 80 265V ~ – 18 80V – 5A1A 1A 5A 2 5 U f n = 50Hz 60Hz RS 611 006 - [ SGR SGB SGF SPCJ 4D29 TRIP PROGRAM RESET STEP L1 L2 L3 0 IRF 3 > I I I II I > n I I / k s > t ] n > > I I / s > > [] t s > k [] t n 0 > I I / s > > o t [] n > > o I / I 0012A 0 0 Indication Explanation 1 I> START = The low-set stage I> of the overcurrent unit has started 2 I> TRIP = The low-set stage I> of the overcurrent unit has operated 3 I>> START = The high-set stage I>> of the overcurrent unit has started 4 I>> TRIP = The high-set stage I>> of the overcurrent unit has operated 5I 0 > START = The low-set stage I 0 > of the earth-fault unit has started 6I 0 > TRIP = The low-set stage I 0 > of the earth-fault unit has operated 7I 0 >> START = The high-set stage I 0 >> of the earth-fault unit has started 8I 0 >> TRIP = The high-set stage I 0 >> of the earth-fault unit has operated 9 CBFP = Circuit breaker failure protection has operated D) The TRIP indications persist when the pro- tection stage returns to normal. The indica- tor is reset by pushing the RESET/STEP push-button. Further, the indicators may be reset via the external control input 10-11 by applying a control voltage to the input, provided switch SGB/8 is in position 1. The basic protection relay functions are not depending on the state of the operation indica- tors, reset or non-reset. The relay is permanently operative. If a protection stage starts, but not operates, because the energizing quantity goes below the set start current before the operate time circuit has timed out, the start indicators are normally automatically switched off. However, by means of the switches SGF2/1…4 the start indications may be made persistant which means that they are to be manually reset by pushing the RESET/ STEP push-button. The persistent indications are obtained through the following switch set- tings. SGF2/1 = 1 manual reset of I> start indication SGF2/2 = 1 manual reset of I>> start indication SGF2/3 = 1 manual reset of I 0 > start indication SGF2/4 = 1 manual reset of I 0 >> start indication On delivery of the relay from the factory the switches SGF2/1…4 are preset at 0. E) Shortly after the internal self-supervision system has detected a permanent relay fault the red IRF indicator is switched on and the output relay of the self-supervision system operates. Further, in most fault situations an autodiagnostic fault code is shown in the display. The fault code is composed of a red figure 1 and a green code number which indicates fault type. The fault code persists until the STEP/RESET push-button is pressed. When a fault code appears on the display, the code number should be recorded for statistical and maintenance purposes. 9 Power supply and output relay module To be able to operate the relay needs a secured auxiliary voltage supply. The power supply module forms the voltages required by the pro- tection relay module and the auxiliary relays. The withdrawable power supply and output relay module is located behind the system front panel, which is fixed by means of four cross- slotted screws. The power supply and output relay module contains the power supply unit, all output relays, the control circuits of the output relays and the electronic circuitry of the external control inputs. The power supply and output relay module can be withdrawn after removing the system front panel. The primary side of the power supply module is protected with a fuse, F1, located on the PCB of the module. The fuse size is 1 A (slow). The power supply unit is a pulse-width modu- lated (PWM) dc/dc converter with galvanically isolated primary and secondary sides. It forms the dc secondary voltages required by the pro- tection relay module; that is +24 V, ±12 V and +8 V. The output voltages ±12 V and +24 V are stabilized in the power supply module, while the +5 V logic voltage required by the protection relay module is stabilized in the protection relay module. 1 A slow +8V +12V -12V +24V Uaux 80 265 V ac & dc 18 80 V dc Unstabilized logics voltage Operation amplifier voltage Output relay coil voltage Fig. 5.Voltage levels of the power supply unit A green LED indicator U aux on the system front panel is lit when the power supply module is in operation. The supervision of the voltages sup- plying the electronics is located in the protec- tion relay module. If a secondary voltage differs too much from its rated value, a self-supervision alarm will be generated. An alarm is also issued when the power supply module is withdrawn from the relay case, or on loss of auxiliary supply. There are two versions of power supply and output relay modules available. For both types, the secondary sides and the relay configurations are identical, but the input voltage ranges differ. Insulation test voltage between the primary and secondary side and the protective earth 2 kV, 50 Hz, 1 min Rated power P n 5 W Voltage ranges of the power supply modules: - SPTU 240 R1 U aux = 80 265 V dc/ac - SPTU 48 R1 U aux = 18 80 V dc The SPTU 240 R1 module can be fed from either an ac source or a dc source. SPTU 48 R1 is designed for dc supply only. The permitted auxiliary voltage range of the relay is marked on the relay system front panel. 10 Energizing inputs Rated current I n 1 A 5 A Thermal withstand capability - continuously 4 A 20 A - for 1 s 100 A 500 A Dynamic current withstand, half-wave value 250 A 1250 A Input impedance <100 mΩ <20 mΩ Rated frequency f n , on request 50 Hz or 60 Hz Output contact ratings Tripping contacts Terminals 65-66, 74-75 Rated voltage 250 V dc/ac Continuous carry 5 A Make and carry for 0.5 s 30 A Make and carry for 3.0 s 15 A Breaking capacity for dc, when the trip circuit time-constant L/R ≤ 40 ms, at 48/110/220 V dc 5 A/3 A/1 A Signalling contacts Terminals 70-71-72, 68-69, 77-78, 80-81 Rated voltage 250 V dc/ac Continuous carry 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 signal circuit time-constant L/R ≤ 40 ms, at 48/110/220 V dc signal circuit voltage 1 A/0.25 A/0.15 A External control inputs Blocking, remote reset or remote setting input 10-11 Control voltage level 18 265 V dc or 80 265 V ac Control current of activated input 2…20 mA Power supply and output relay module Supply and output relay module, type SPTU 240 R1 80 265 V dc/ac Supply and output relay module, type SPTU 48 R1 18 80 V dc Power consumption under quiescent/operating conditions ~4 W/ ~6 W Technical data (modified 2002-04) [...]... Order information 1 Quantity and type designation 2 Rated frequency 3 Auxiliary voltage 4 Accessories 5 Special requirements 14 34 136 30 250 216 186 a b 176 136 96 74 114 154 Example 15 pcs relay type SPAJ 140 C fn = 50 Hz Uaux = 110 V dc 15 pcs bus connection modules SPA-ZC17 MM 2 pcs fibre optical cables SPA-ZF MM 100 14 pcs fibre optical cables SPA-ZF MM 5 — General characteristics of D-type relay . L3 0 IRF 3 > I I I II I > n I I / k s > t ] n > > I I / s > > [] t s > k [] t n 0 > I I / s > > o t [] n > > o I / I 0012A 0 0 SPAJ 140 C Overcurrent and earth-fault relay User´s manual and Technical description 2 SPAJ 140 C Combined overcurrent and earth-fault relay Contents Features. 14 Order information 14 The complete manual for the relay SPAJ 140 C contains the following submanuals: General relay description for SPAJ 140 C 1MRS 750629 General characteristics of D type relay. 2003-09) Fig. 2. Connection diagram for the combined overcurrent and earth-fault relay type SPAJ 140 C. 6162 SPAJ 140 C 63 25 26 27123456 789 1 A 5 A L1 L2 L3 70 71 72 0 65 66 U + (~) - (~) 3I> 3I>> Io> Io>> IRF I/O 68