SPEF 3A2 C. Fault indicator. User s manual and Technical description SPEF 3A2 C. f n SPA. Serial port. RS AA Ser.No.

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1 SPEF 3A2 C Fault indicator User s manual and Technical description SPA f n = 50Hz x 60Hz U aux =24V- REGISTERS 0 1 I L1 [ A] 2 I L2 [ A] 3 I L3 [ A] 4 t ( I > )[%] 5 I o [ A] 6 t ( I o > )[%] 7 I [%] 8 t ( I > ) [%] RS AA Ser.No SPEF 3A2 C OPERATION IND. 0 1 I > start 2 I > alarm 3 I o > start 4 I o > alarm 5 I > start 6 I > alarm Serial port I L1 I L2 I L3 I o I > [ A] t > [ s] I o > [ A] t o > [ s] I > [%] t > [ s] SGF SGB I 3 I > IRF I > I > RESET STEP PROGRAM ALARM B470959B 1 18 X1

2 1MRS MUM EN Issued Version A (replaces 34 SPEF 1 EN1) Checked HM Approved TK SPEF 3A2 C Fault indicator Data subject to change without notice Contents Characteristics... 3 Application... 3 Alarming functions... 3 Connection diagram... 4 Connections... 5 Technical data... 7 Description of function... 9 Resetting possibilities Analog outputs for phase current, residual current or phase unbalance Front panel Operation indicators Settings Programming switches Measured data Recorded data Main menus and submenus of settings and registers Event codes Data to be transferred over the bus Fault codes Maintenance and repairs Spare parts Dimensions and instructions for mounting Ordering numbers and information required with order

3 Characteristics Three-phase overcurrent unit with definite time characteristic Phase unbalance indicator with definite time characteristic Neutral residual overcurrent unit Alternative analog or digital outputs if SPA bus not available Digital display of measured and set values and sets of data recorded at the moment when a fault occurs All measured values are displayed in amperes All settings may be entered via the push-buttons on the front panel or via a personal computer Continuous self-supervision of hardware and software. At a permanent internal fault all stages and outputs are blocked. This fault signal can be read via Weidmuller connection X1-6. Application The fault indicator SPEF 3A2 C is used in disconnector terminal units (DTU) with KOHU 24A1 or KOKU 072G3 current sensors to indicate short-circuit faults, earth faults and broken lines in a medium voltage distribution network. With the fault indicator it is possible to get information about measured and set values via a disconnector terminal unit to a SPIDER or MicroSCADA. This information can be used e.g. to locate faults in a medium voltage distribution network. If no serial communication (SPA bus) is available, it is possible to use output relays and analog outputs. The analog outputs are continuously monitoring the condition of the network and the output relays are signalling fault indications. Alarming functions IL1 IL2 Three-phase definite time overcurrent indicator 51 I> alarm I 0 > alarm I alarm IL3 Definite time earth-fault indicator 51N Analog output I load Analog output I 0 Control input BS Phase unbalance indicator 37 Analog output I IRF Serial communication SERIAL I/O funcblck Fig. 1. Function of the fault indicator type SPEF 3A2 C. 3

4 Connection diagram KOHU 24A1 IL1 IL2 IL1 IL2 IL3 SPEC 3 Common IL3 Disconnector + 24 Vdc - Motor drive Remote reset input BS Control unit SPOC 21XC Serial port IRF Overcurrent contact (SPST,NO) Can be used instead of serial interface Earth-fault contact (SPST,NO) Unbalance contact (SPST,NO) X1-1 X1-2 X1-3 X1-7 X1-17 X1-18 X2 X1-8 X1-9 X1-10 X1-11 X1-14 Common X1-12 X1-13 X1-6 X1-15 I (analog out) load X1-16 Io load (analog out) Unbal. (analog out) load + - I> t> >1s/ 80ms SGF 1/4 1 step & program SGF 1/1 HW Filter Imax-Imin Imax I> & t >1s/ 80ms SGF1/6 1 step & program HW Io> & to> SGF 1/3 >1s/ 80ms SGF 1/5 1 step & program HW Filter SGF 1/2 HW Filter SGB /1 SGB /2 SGB /3 SPEF 3A2 C Reset indicators Reset indicators and output relays Reset indicators, output relays and registers Reset 1 ALARM BLOCK_CO.FH3 Fig 2. Connection diagram of the fault indicator. Abbreviations of signal names I L1, I L2, I L3 Phase currents I 0 Residual current I Phase unbalance SGF, SGB Switchgroups for the selection of functions ALARM Alarm indicator IRF Internal fault I> Alarm, I 0 Alarm and Output relays I Alarm I load (phase current), Analog output signals I 0 (residual current) and I (phase unbalance) 4

5 Connections Inputs for phase current Terminal Function X1-1 I L1 X1-2 I L2 X1-3 I L2 X1-7 Common ground for phase currents Cable's shield Auxiliary supply voltage 24 V dc Terminal Function X Vdc X1-18 GND, internally connected to X1-7 Protective earth Terminal Function Protective earth terminal Remote reset input BS The fault indicator can be externally reset via the control input Terminal Function X1-12 Input Vdc, 10 ma floating X1-13 Input- Output relays Terminal Function X1-8 For overcurrent, closing contact X1-9 For residual current, closing contact X1-10 For unbalance, closing contact X1-11 Common Internal device fault signal Terminal Function X1-6 Internal device fault. At an internal fault the voltage level drops from 5 V to below 2 V X1-18 GND, internally connected to X1-7 5

6 Analog output signals Terminal Function X1-14 Analog real-time readout (0 5 V) of maximum current of the phases L1-L3. The scaling is user selectable by changing the range selector. This range selector is settable with the serial parameter S10 or at front panel, submenu of the setting I>. X1-15 Analog real-time readout (0 5 V) of residual current I 0. The scaling is user selectable by changing the range selector. This range selector is settable with the serial parameter S11 or at front panel, submenu of the setting I 0 >. X1-16 Analog real-time readout (0 5 V) of phase unbalance I. X1-18 GND, internally connected to X1-7. Serial communication connections Current loop connection to SPOC 2XX with cable SPA-ZP27A07 Terminal Function X2-2 TxD- to SPOC 2XX, 0/5 ma X2-8 TxD+ to SPOC 2XX X2-5 RxD+ from SPOC 2XX, 0/5-20 ma X2-6 RxD- from SPOC 2XX SPA logic/rs232 connection to PC with cable SPA-ZP5A Terminal Function X2-2 TxD, output X2-3 RxD, input X Vdc, supply voltage for SPA-ZP5A X2-7 GND Fibre optic bus connection module SPA-ZC21 Terminal Function X2-2 TxD, output X2-3 TxD, input X Vdc, supply voltage for SPA-ZC21 X2-7 GND Fibre optic bus connection module SPA-ZC17 or SPA-ZC22 with cable SPA-ZP14A2 Terminal Function X2-2 TxD, output X2-3 RxD, input X2-7 GND The fault indicator SPEF 3A2 C is interfaced with the SPA serial communication bus through a 9- pole, D-type subminiature connector X2 located on the front panel of the device. 6

7 Technical data Energizing inputs Primary Output of the Current current sensors (KOHU24A/KOKU 073G2) Measurement range of phase input currents A A *) Thermal withstand capability - continuously 400 A 0.1 A - for 1 s 20 ka 2.3 A *) Dynamic current withstand, half-wave value 50 ka 5.7 A Measurement range of neutral input current 0 70 A A Input impedance <100Ω Rated frequency 50/60 Hz *) According to IEC with the KOHU/KOKU current sensors and the connection box SPEC 3. Overcurrent stage I> Starting current I> A Starting time, typical 60 ms Operate time t> s Resetting time, typical 60 ms Drop-off/pick-up ratio, typical 0.95 Operation time accuracy ± 2% of set value or ± 25 ms Operation accuracy ± 3% of set value Neutral overcurrent stage I 0 > Starting current I 0 > 2 20 A Starting time, typical 60 ms Operating time t 0 > s Resetting time, typical 60 ms Drop-off/pick-up ratio, typical 0.95 Operation time accuracy ± 2% of set value or ±25 ms Operation accuracy ± 5% of set value and ± 1% of I load **) **) Summation error is about 1% of measured load current. Phase unbalance stage I> Starting current I> 10 60% Starting time, typical 90 ms Operate time t > s Resetting time, typical 90 ms Drop-off/pick-up ratio, typical 0.90 Operation time accuracy ± 2% of set value or ± 75 ms Operation accuracy ± 5% of displayed value Output contact ratings According to IEC : - Rated voltage 250 V ac - Resistive load 2 A at 30 Vdc/250 Vac - Inductive load (L/R < 7 ms)***) 2 A at 30 Vdc - Making and conducting capacity 5 A, 0.5 s - Minimum load 10 ma at 5 Vdc Contact material AgCdO 2 ***) L/R 7 ms according to contact ratings of the signal output relays used. 7

8 Analog outputs Voltage range Minimum load impedance Response delay Inaccuracy External control inputs External control voltage level Typical control current of input circuit Data transmission Transmission mode Protocol Selectable data transfer rates Power supply Supply Power consumption Test voltages For output relays: Insulation test according to IEC Impulse test according to IEC Insulation resistance test according to IEC V 10 kω < 500 ms I load 5% or ± 30 mv when current > 5 A I 0 5% or ± 30 mv I ± 200 mv when I phase (I L1 or I L2 or I L3 ) max 10 A Vdc 10 ma serial bus SPA bus 4800 or 9600 Bd V dc W (depending on relays and indicators) 2 kv, 50 Hz, 1 min 5 kv, 1.2/50 µs, 0.5 J >100 MΩ, 500 Vdc Disturbance tests Current inputs are measured with the connection box SPEC 3 and a connection cable of at least two meter. High frequency interference test voltage, inputs and output between themselves and to the fault indicator frame as per: Common mode acc. to IEC Differential mode acc. to IEC Common mode acc. to ANSI C Fast transient test IEC , cl. III Electrostatic discharge test acc. to IEC , cl. III - contact discharge 6 kv - air discharge 8 kv Environmental conditions Enviromental condition tests are made on SPEF 3A2 C without current sensors. Specified ambient service temperature range Transport and storage temperature range Temperature influence on the operating values over 2.5 kv, 1 MHz 1 kv, 1 MHz 2.5 kv, 1 MHz 2 kv -10 C to +55 C -40 C to +70 C, 72 h + 72 h the specified ambient service temperature range <0.02%/ C Climatic environmental tests - dry heat test acc. to IEC C/16h - dry cold test acc. to IEC C/16h - damp heat test acc. to IEC RH=93%, 55 C, 6 cycles Degree of protection by enclosure of the device case as per IEC 529 IP 20 Mass of the fault indicator about 1.3 kg 8

9 Description of functions Overcurrent unit The overcurrent unit of the fault indicator SPEF 3A2 C is designed for single-phase, two-phase or three-phase operation. The stage starts if the current on one of the phases exceeds the setting value of the stage concerned. When starting the concerned stage indicates starting on the digital display on the front panel. If the overcurrent situation lasts long enough to exceed the set operate time, the stage that started provides an alarm signal. At the same time the alarm indicator is lit with yellow light. The yellow indicator remains on although the stage resets. The alarm indicator is reset with the reset button. The alarm signal is always routed to overcurrent contact X1-8. The start current setting range I> of the unit is A. The operating time t> is set in seconds within the setting range, s. The operation of overcurrent stage is provided with a latching facility (SGF1/4) keeping the alarm output energized, although the signal which caused the operation disappears. The output relays may be reset by pressing the PRO- GRAM push-button, by pressing the RESET and PROGRAM push-buttons simultaneously, by remote control over the external input or over the SPA bus using the command V101 or the command V102. The minimum pulse length for the signal delivered by the I> stage can be set to 80 ms or 1 s (switch SGF1/1). Note! The latching function for I> stage (SGF1/4) will overrun this function. Earth fault unit The non-directional earth fault indicator is based on the sum of phase currents. The earth fault stage starts if the energizing current I 0 exceeds the set starting level of the stage concerned. When starting the concerned stage indicates starting on the display on the front panel. If the above mentioned criterions are fulfilled long enough to exceed the set operate time, the stage that started provides an alarm signal. At the same time the yellow alarm indicator is lit with yellow light. The yellow indicator remains on although the stage resets. The alarm indicator is reset with the reset button. The alarm signal is always routed to the earth fault contact X1-9. The setting range I 0 > of the earth fault unit is 2 20 A or (indicated by "- - -"). The operate time t 0 > is set in seconds within the setting range s. The operation of earth fault stage is provided with a latching facility (SGF1/5) keeping the alarm output energized, although the signal which caused the operation disappears. The output relays may be reset by pressing the PRO- GRAM push-button, by pressing the RESET and PROGRAM push-buttons simultaneously, by remote control over the external input or over the SPA bus using the command V101 or the V102. The operation of earth fault unit may be set out of operation by means of switch SGF1/7. When the earth fault unit is out of operation the display indicates "- - -", which means that the operation value is infinite. The minimum pulse length for the signal delivered by the I 0 > stage can be set to 80 ms or 1 s with switch SGF1/2. Note! The latching function for I 0 > stage (SGF1/5) will overrun this function. 9

10 Phase unbalance unit The phase unbalance unit constitutes a definite time current unbalance unit. The unbalance of the power system is detected by monitoring the highest and the lowest phase current values, i.e. the unbalance = 100% x (I Lmax -I Lmin )/I Lmax. At full unbalance the display shows 100% which equals a negative phase sequence current I 2 = 57.8%. If the unbalance exceeds the set operating level I, the unit starts and a timer is started. If the unbalance situation lasts long enough to exceed the set operate time, the phase unbalance stage provides an alarm signal. At the same time the yellow alarm indicator is lit. The yellow indicator remains on although the stage resets. The alarm indicator is reset with the reset button. The alarm signal is always routed to unbalance contact X1-10. The setting range of the starting current is 10 60% or (indicated as "- - -"). The basic operate time is set within the range s. The operation of the phase unbalance stage I is provided with a latching facility (SGF1/6) keeping the alarm output energized, although the signal, which caused the operation disappears. The output relays may be reset by pressing the PROGRAM push-button, pressing the RESET and PROGRAM push-buttons simultaneously, by remote control over the external input or over the SPA bus using the command V101 or the V102. The operation of unbalance unit may be set out of operation by means of switch SGF1/8. When the unbalance unit is set of operation the display indicates "- - -", which means that the operation value is infinite. The minimum pulse length for the signal delivered by the I stage can be set to 80 ms or 1 s with switch SGF1/3. The latching function for the I> stage (SGF1/6) will overrun this function. Note! To secure a proper operation of the phase unbalance unit in a two-phase application, the two phase currents should be summed up in the third phase current transformer, i.e. a virtual third phase is established. Note! To prevent the fault indicator unit from unwanted alarm signals, the earth fault and unbalance units will be blocked by the overcurrent unit. Additionally, the unbalance will be blocked in a single earth fault situation. Resetting possibilities The start and operation indicators on the front panel of the module, the latched output relays and registers 1-8 can be reset locally or by remote control as presented in the following table: Resetting of start Resetting of latched Resetting indicators and operation output relay of values recorded RESET X PROGRAM & display off X X STEP & RESET X X X parameter V101 X X parameter V102 X X X BS & SGB/1=1 X BS & SGB/2=1 X X BS & SGB/3=1 X X X Analog outputs for phase current, residual current or phase unbalance The fault indicator is provided with three analog outputs to be connected to any external device. When this facility is used, the max. phase current, residual current or phase unbalance can at any instant be read out by a meter or a programmable logic controller. The outputs are 0 5 Vdc signals. The scaling for phase current and residual current outputs are dependent on the setting of range selectors. These range selectors can be changed via submenus on the front panel or serial parameters S10 (I>) and S11 (I 0 >). The selected range values for I> are 10 A, 20 A, 50 A, 100 A, 200 A and 500 A and for I 0 > 5 A,10 A, 20 A, 50 A and 100 A. E.g: If the range selector parameter for phase current is set to 500 then the scaling of the primary current A is 0 5 V over the phase current output X1-14. Thus a phase current of 100 A will give 1 V over output X

11 Front panel Type designation Registers and Operation indicators Serial port connection Type number and serial number f n = 50Hz x 60Hz U aux =24V- REGISTERS OPERATION IND. 0 0 SPEF 3A2 C 1 I L1 [ A] 1 I > start 2 I L2 [ A] 2 I > alarm 3 I L3 [ A] 3 I o > start 4 t ( I > )[%] 4 I o > alarm 5 I o [ A] 5 I > start 6 t ( I o > )[%] 6 I > alarm 7 I [%] 8 t ( I > ) [%] SPA Serial port RS AA Ser.No I L1 I L2 I L3 I o I > [ A] t > [ s] I o > [ A] t o > [ s] I > [%] t > [ s] SGF SGB I 3 I > IRF I > I > RESET STEP PROGRAM ALARM Simplified device symbol Indicators for measured current values and Self-supervision alarm indicator. Display Indicators for different setting values. Reset and step display push-button Programming push-button Alarm indicator B470959B 1 18 X1 Output and input connections Fig 3. Front panel of the fault indicator SPEF 3A2 C Operation indicators Each stage has its own operation indicator shown as a red figure to the left on the digital display. Further, all stages have a common indicator named "ALARM"; a yellow LED indicates that the module has delivered an alarm signal. The red operation indicator on the display remains illuminated when the stage resets, thus indicating which stage has operated. If the start of a stage does not last long enough to cause an alarm, the start indication on the display is normally self-reset when the stage is reset. If needed, the start indicators can be given a latching function by means of switches SGF2/ 1 3. The following table explains the start and alarm indicators on the display. Indication nr Explanation 1 I> start The overcurrent stage I> has started 2 I> alarm The overcurrent stage I> has given an alarm 3 I 0 > start The earth fault stage I 0 > has started 4 I 0 > alarm The earth fault stage I 0 > has given an alarm 5 I> start Stage I> has started 6 I> alarm Stage I> has given an alarm The red self-supervision alarm indicator IRF indicates that the self-supervision system has detected a permanent fault. The indicator is lit about 1 minute after the fault has been detected. At the same time the plug-in module delivers a signal to the self-supervision system output connection X1-6. Additionally, in most cases, a fault code showing the nature of the fault appears on the display of the module. The fault code, which consists of a red figure one and a green code number, cannot be erased from the display of the module by resetting. When a fault occurs, the fault code should be recorded and stated when service, is ordered. 11

12 Settings The setting values are shown by the right-most three digits of the display. A lit indicator close to a setting value symbol shows which setting value is indicated on the display. Note! A symbol "//" in the text indicates that the following item is found in a submenu. Setting Parameter Setting range (Primary values) I> (A) The starting current of the I> stage // A Selection of the operative range expressed in amperes deter- 10 A, 20 A, mined by the max. phase current, corresponding to the output 50 A, 100 A, signal 0 5 V. 200 A, 500 A t> (s) The operate time of the I> stage, expressed in seconds s I 0 > (A) The starting current of the I 0 > stage // 2 20 A Selection of the operative range expressed in amperes deter- 5 A, 10 A, mined by the max. I 0 current, corresponding to the output 20 A, 50 A, signal 0 5 V. 100 A t 0 > (s) The operate time of the I 0 > stage, expressed in seconds s I> Setting I> for the unbalance indicator in per cent of the 10 60% highest phase current, expressed as a percentage t (s) The operate time of the I> stage, expressed in seconds s SGF1 SGF2 SGB The checksum of the programming switchgroups SGF1, SGF2 and SGB. The functions of the different switches are described in separate paragraphs. An example of calculating the checksum is given in the general description of the D-type SPC relay modules 12

13 Programming switches Switchgroups SGF1 and SGF2 Additional functions required by individual applications are selected by means of the switchgroup SGF, indicated on the front panel. The number of the switches, 1 8, and the switch positions, 0 and 1, are indicated when the switchgroups are being set. In normal service only the checksums are shown. Switch Function Factory setting SGF1/1 Choosing the minimum pulse length for the signal delivered by the 0 I> stage. Note! The latching function for the I> stage (SGF1/4) will overrun this function. When SGF1/1=0, the minimum pulse length of the signal delivered by the I> stage is 1 s. When SGF1/1=1, the minimum pulse length of the signal delivered by the I> stage is 0.08 s. SGF1/2 Choosing the minimum pulse length for the signal delivered by the 0 I 0 > stage. Note! The latching function of the I 0 > stage (SGF1/5) will overrun this function. When SGF1/2=0, the minimum pulse length of the signal delivered by the I 0 > stage is 1 s. When SGF1/2=1, the minimum pulse length of the signal delivered by the I 0 > stage is 0.08 s. SGF1/3 Choosing the minimum pulse length for the signal delivered by the 0 I> stage. Note! The latching function for the I> stage (SGF1/6) will overrun this function. When SGF1/3=0, the minimum pulse length of the signal delivered by the I> stage is 1 s. When SGF1/3=1, the minimum pulse length of the signal delivered by the I> stage is 0.08 s. SGF1/4 Latching function for the alarm signal of the overcurrent stage I> 0 When SGF1/4=0, the alarm signal returns to its initial state, i.e. the output relay drops off, when the signal causing th operation falls below the starting level. When SGF1/4=1, the alarm signal remains on, i.e. the output relay remains operated although the measuring signal falls below the starting level. Then the alarm signal of the overcurrent stage I> must be reset by pressing the RESET and PROGRAM push-buttons simultaneously or by using the command V101. When the display is off the signals can also be reset by pressing only the PROGRAM push button. 13

14 Switch Function Factory setting SGF1/5 Latching function for the alarm signal of earth fault stage I 0 >. 0 When SGF1/5=0, the alarm signal returns to its initial state, i.e. the output relay drops off, when the signal causing the operation falls below the starting level. When SGF1/5=1, the alarm signal remains on, i.e. the output relay remains operated although the measured signal falls below the starting level. Then the alarm signal of the earth fault stage I 0 > must be reset by pressing the RESET and PROGRAM push-buttons simultaneously or using command V101. When the display is off the signals can also be reset by pressing only the PROGRAM push button. SGF1/6 Latching function for the alarm signal of unbalance stage I>. 0 When SGF1/6=0, the alarm signal returns to its initial state, i.e. the output relay drops off, when the signal causing the operation falls below the starting level. When SGF1/6=1, the alarm signal remains on, i.e. the output relay remains operated although the measured signal falls below the starting level. Then the alarm signal of the unbalance stage I> must be reset by pressing the RESET and PROGRAM push-buttons simultaneously or by using command V101. When the display is off the signals can also be reset by pressing only the PROGRAM push button. SGF1/7 The earth fault stage can be set out of operation by means of 0 this switch. SGF1/8 The unbalance stage can be set out of operation by means of 0 this switch. SGF2/1 Switches SGF2/1 3 are used for selecting the mode of operation 0 SGF2/2 of the start indicators of the different stages and the LEDs for the 0 SGF2/3 measured currents. When the switches are in position 0 the start 0 indicators are all automatically reset when the fault is cleared. In order to get a hand reset start indication for the stages, their respective switches have to be in position 1. When the switches are in position 0 the LEDs for the measured currents are not affected by a start, and when the switches are in position 1 it is possible to get information of which phase activated a start. When SGF2/1=1, the start indicator of the overcurrent stage I> has to be manually reset. When SGF2/2=1, the start indicator of the earth fault stage I 0 > has to be manually reset. When SGF2/3=1, the start indicator of the unbalance stage I> has to be manually reset. SGF2/4 Reserved for future use 0 SGF2/5 Reserved for future use 0 SGF2/6 Reserved for future use 0 SGF2/7 Reserved for future use 0 SGF2/8 Reserved for future use 0 14

15 Remote reset input switchgroup SGB Switch Function Factory setting SGB/1 Remote reset of indicators 0 When SGB/1=0, the indicators are not reset by signal BS. When SGB/1=1, the indicators are reset by signal BS. SGB/2 Remote reset of indicators and output relays 0 When SGB/2=0, the indicators and output relays are not reset by signal BS. When SGB/2=1, the indicators and output relays are reset by signal BS. SGB/3 Remote reset of indicators, output relays and memorized values. 0 When SGB/3=0, the indicators, output relays and memorized values are not reset by signal BS. When SGB/3=1, the indicators, output relays and memorized values are reset by signal BS. SGB/4 Reserved for future use 0 SGB/5 Reserved for future use 0 SGB/6 Reserved for future use 0 SGB/7 Reserved for future use 0 SGB/8 Reserved for future use 0 Measured data The measured values are shown by the three right-most digits of the display. The currently measured data are indicated by an illuminated LED indicator on the front panel. Indicator I L1 I L2 I L3 I 0 I Measured data Line current on phase L1 in ampere Line current on phase L2 in ampere Line current on phase L3 in ampere Neutral current in ampere The actual value of phase unbalance in per cent of the highest phase current 15

16 Recorded data When the fault indicator provides an alarm signal, the current values at the moment of the alarm, the duration of the start of the different units and other parameters are stored in a five-place memory stack. A new event moves the old values up one place and adds the new value to the first place of the stack which contains registers 1 8. Five events are memorized - if a sixth alarm occurs, the oldest set of values will be lost. A master reset (pressing the push-buttons RESET and PROGRAM simultaneously) of the relay erases all the contents of the register blocks. The left-most red digit displays the register address and the other three digits the recorded information. Note! A symbol "//" in the text indicates that the following item is found in a submenu. Register Recorded information 1 Line phase current L1 (n) measured in ampere // Event (n-1) value of line phase current L1 // Event (n-2) value of line phase current L1 // Event (n-3) value of line phase current L1 // Event (n-4) value of line phase current L1 // 2 Line phase current L2 (n) measured in ampere // Event (n-1) value of line phase current L2 // Event (n-2) value of line phase current L2 // Event (n-3) value of line phase current L2 // Event (n-4) value of line phase current L2 // 3 Line phase current L3 (n) measured in ampere // Event (n-1) value of line phase current L3 // Event (n-2) value of line phase current L3 // Event (n-3) value of line phase current L3 // Event (n-4) value of line phase current L3 // 4 Duration of the latest starting situation (n) of overcurrent stage I> as a percentage of the set operating time t>. When the concerned stage has alarmed the counter reading is 100 per cent. // Duration of event (n-1) starting of stage I> // Duration of event (n-2) starting of stage I> // Duration of event (n-3) starting of stage I> // Duration of event (n-4) starting of stage I> // Number of startings of the stage I> in the range Neutral current measured in ampere // Event (n-1) value of neutral current // Event (n-2) value of neutral current // Event (n-3) value of neutral current // Event (n-4) value of neutral current // 6 Duration of the latest starting situation (n) of stage I 0 > expressed as a percentage of the set operate time t 0 >. When the concerned stage has alarmed the counter reading is 100 per cent. // Duration of event (n-1) starting of stage I 0 > // Duration of event (n-2) starting of stage I 0 > // Duration of event (n-3) starting of stage I 0 > // Duration of event (n-4) starting of stage I 0 > // Number of startings of the stage I 0 > in the range Phase unbalance I in per cent of the highest phase current // Event (n-1) value of phase unbalance I // Event (n-2) value of phase unbalance I // Event (n-3) value of phase unbalance I // Event (n-4) value of phase unbalance I // 16

17 Register Recorded information 8 Duration of the latest starting situation (n) of stage I> expressed as a percentage of the set operating time t. When the concerned stage has alarmed the counter reading is 100 per cent. // Duration of event (n-1) starting of stage I> // Duration of event (n-2) starting of stage I> // Duration of event (n-3) starting of stage I> // Duration of event (n-4) starting of stage I> // Number of startings of the stage I> in the range Display of external control signals. The right-most digit indicates the state of the control input of the unit. The following states may be indicated: 0 = no control signal 1 = the control signal is active From this register "0" it is possible to move on to the TEST mode, where the alarming signals of the module are activated one by one in the following order and indicated by the flashing setting indication LED: I > [ A] > t [ s] I o > [ A] > [ ] t o s I % > [ ] t > [ s] Alarm from I> Alarm from I 0 > Alarm from I> For further details see the description "General characteristics of D-type SPC relay units". A The address code of the fault indicator, required by the serial communication system. // The selection of the data transfer rate of the serial communication. // The bus traffic monitor indicating the operating state of the serial communication system. If the module is connected to a system including a control data communicator and if the communication system is operating, the counter reading of the bus traffic monitor will be zero. Otherwise the numbers are continuously rolling in the display. // Password required for the remote control of the settings. The password must always be entered via the serial communication before a setting can be altered remotely. The registers 1 8 are set to zero by pressing the push-buttons RESET and PROGRAM simultaneously. The registers are also cleared if the auxiliary power supply to the module is interrupted. The address code of the unit, the data transfer rate of the serial communication and the password are not erased by a voltage failure. Instructions for setting the address and the data transfer rate are given in the manual "General characteristics of D type SPC relay units". The recorded information contains a time stamp which includes date and time in the form at: yy-dd hh, mm; ss, sss. The time stamps of the registers can be read via the serial bus by using parameters V19, V39 99 (see page 21 "Data to be transferred over the bus"). After a power supply interruption or start-up, date and time should be set via the bus by using parameters T and D (se page 23). 17

18 Main menus and submenus of settings and registers MAIN MENU SUBMENUS STEP 0.5 s PROGRAM 1 s Normal status, display off Current on phase L1 Current on phase L2 Current on phase L3 Neutral current Io Phase unbalance I REV. STEP 0.5 s SUBMENUS FWD. STEP 1 s R E V. Start value I> 1 Range selector of Iload analog output S T E P.5 s M A I N M E N U Operate time t> Start value Io> Operate time to> Start value I> Operate time t > 1 Range selector of Io analog output F W D. Setting of functional switchgroup SGF1 1 Setting of functional switchgroup SGF2 2 Setting of functional switchgroup SGB S T E P 1 s 1 Latest memorized, event (n) Event (n-1) value of phase L1 1 value of phase L1 2 2 Latest memorized, event (n) Event (n-1) value of phase L2 1 value of phase L2 2 Event (n-2) value of phase L1 Event (n-2) value of phase L Latest memorized, event (n) Event (n-1) value of phase L3 1 value of phase L3 2 4 Duration of event (n) starting of stage I> 1 Duration of event (n-1) 2 starting of stage I> Latest memorized event (n) 5 1 Event (n-1) value of 2 value of neutral current neutral current Duration of event (n) 6 1 Duration of event (n-1) 2 starting of stage Io> starting of stage Io> Latest memorized, event (n) 7 1 Event (n-1) value of 2 value of phase unbalance I phase unbalance I Duration of event (n) 8 1 Duration of event (n-1) 2 starting of stage I> starting of stage I> Event (n-2) value of phase L3 Duration of event (n-2) starting of stage I> Event (n-2) value of neutral current Duration of event (n-2) starting of stage Io> Event (n-2) value of phase unbalance I Duration of event (n-2) starting of stage I> Status of external relay blocking / control signal IRF t> to> t > A Relay unit identification Communication rate address for communication 1 setting [Bd] 2 Loss of bus traffic time counter s A Fig 4. Main menus and submenus of the fault indicator SPEF 3A2 C 18

19 The measures required for entering a submenu or a setting mode, the setting procedure and how to use the TEST mode are described in detail on data sheet "General characteristics of the D-type relay modules". Below a short guide. Desired step or operation Push-button Action Forward step in main or submenu STEP Press > 0.5 s Rapid scan forward in main menu STEP Keep depressed Reverse step in main or submenu STEP Press < 0.5 s Entering a submenu from the PROGRAM Press 1 s main menu Entering or leaving a setting mode PROGRAM Press for 5 s Increasing a value in a setting mode STEP Moving the cursor in a setting mode PROGRAM Press about 1 s Storing a value in a setting mode STEP & PROGRAM Press simultaneously Resetting memorized values + STEP & PROGRAM output relays Resetting output relays PROGRAM Note! Display must be off 1 3 Event (n-3) value of phase L1 4 Event (n-4) value of phase L1 2 3 Event (n-3) value of phase L2 4 Event (n-4) value of phase L2 3 3 Event (n-3) value of phase L3 4 Event (n-4) value of phase L3 4 3 Duration of event (n-3) starting of stage I> 4 Duration of event (n-4) starting of stage I> 5 Number of startings of the stage I> since last reset 5 3 Event (n-3) value of neutral current 4 Event (n-3) value of neutral current 6 3 Duration of event (n-3) starting of stage Io> 4 Duration of event (n-4) starting of stage Io> 5 Number of startings of the stage Io> since last reset 7 3 Event (n-3) value of phase unbalance I 4 Event (n-4) value of phase unbalance I 8 3 Duration of event (n-3) starting of stage I 4 Duration of event (n-4) starting of stage I 5 Number of startings of the stage I> since last reset A 3 Password for altering settings 19

20 Event codes When the fault indicator module SPEF 3A2 C is linked to a control data communicator over the SPA bus, the module will provide timestamped events e.g. to a printer. The events are printed out in the format: time, user-specified text and event code. The events are generated on start, alarm, resetting and output relay operation. Every function has its own code designation from E1 E18. Masking parameters can be used to inhibit events from being generated by one or several functions. An event buffer is capable of memorizing up to eight events. If more than eight events occur before the content of the buffer has been sent to the communicator an overflow event "E51" is generated. This event has to be reset by writing a command "0" to parameter C over the SPA bus. More information about the serial communication over the SPA bus can be found in the document "SPA- BUS COMMUNICATION PROTOCOL", 34 SPACOM 2 EN1. Code Event Number Default value representing of the factor the event E1 Start of stage I> 1 1 E2 Start of stage I> reset 2 0 E3 Alarm of stage I> 4 1 E4 Alarm of stage I> reset 8 0 E5 Start of stage I 0 > 16 1 E6 Start of stage I 0 > reset 32 0 E7 Alarm of stage I 0 > 64 1 E8 Alarm of stage I 0 > reset Default checksum for mask V E9 Starting of stage I> 1 1 E10 Starting of stage I> reset 2 0 E11 Alarming of stage I> 4 1 E12 Alarming of stage I> reset 8 0 Default checksum for mask V156 5 E13 Output signal I> alarm activated 1 1 E14 Output signal I> alarm reset 2 0 E15 Output signal I 0 > alarm activated 4 1 E16 Output signal I 0 > alarm reset 8 0 E17 Output signal I> alarm activated 16 1 E18 Output signal I> alarm reset 32 0 Default checksum for mask V E50 Restarting * - E51 Overflow of event register * - E52 Temporary interruption in data communication * - E53 No response from the module over the data communication * - E54 The module responds again over the data communication * - 0 Not included in the event reporting 1 included in the event reporting * No code number - Cannot be programmed Note! The event codes E52 E54 are only generated by the data communicator unit. (SACO 100M, SRIO 1000M, etc.) 20

21 Data to be transferred over the bus In addition to the event data transfer the SPA bus allows reading of all input data (I-data), setting values (S-data), information recorded in the memory (V-data), and some other data of the module. Further, part of the data can be altered by commands given over the SPA bus. All the data are available in channel 0. Parameters can be changed only by opening a password. The password is a value within the range The password is opened by writing a value to the communication parameter V160 and closed by writing the value to parameter V161. The password is also closed when the auxiliary power supply is switched off. The password can be changed via the SPA bus or with the push-buttons on the unit. When using the SPA bus, the password must be opened. The new password is written to parameter V161. When using the push-buttons, the password is changed in subregister 3 of register A, where the old password is replaced by a new one. If a wrong password is entered 7 times, the password turns to zero, in which case it is no longer possible to open it via the bus. Then the password can be given a new value only by using the push-buttons. R = data to be read from the unit W = data to be written to the unit (P) = writing enabled by a password Data Code Data flow Value range direction INPUTS Line current measured on phase L1 I1 R A Line current measured on phase L2 I2 R A Line current measured on phase L3 I3 R A Measured neutral current I4 R 0 70 A Actual unbalance level I5 R 0 100% Remote reset input I6 R 0 = no control signal 1 = external control signal active OUTPUTS Start of stage I> O1 R 0 = I>-stage not started 1 = I>-stage started Alarm of stage I> O2 R 0 = I>-stage not alarmed 1 = I>-stage alarmed Start of stage I 0 > O3 R 0 = I 0 >-stage not started 1 = I 0 >-stage started Alarm of stage I 0 > O4 R 0 = I 0 >-stage not alarmed 1 = I 0 >-stage alarmed Start of stage I> O5 R 0 = I>-stage not started 1 = I>-stage started Alarm of stage I> O6 R 0 = I>-stage not alarmed 1 = I>-stage alarmed I> alarm relay O7 R,W(P) 0 = signal not active 1 = signal active I 0 > alarm relay O8 R,W(P) 0 = signal not active 1 = signal active I>alarm relay O9 R,W(P) 0 = signal not active 1 = signal active 21

22 Data Code Data flow Value range direction Memorized start of stage I> O21 R 0 = I>-stage not started 1 = I>-stage started Memorized alarm of stage I> O22 R 0 = I>-stage not alarmed 1 = I>-stage alarmed Memorized start of stage I 0 > O23 R 0 = I 0 >-stage not started 1 = I 0 >-stage started Memorized alarm of stage I 0 > O24 R 0 = I 0 >-stage not alarmed 1 = I 0 >-stage alarmed Memorized start of stage I> O25 R 0 = I>-stage not started 1 = I>-stage started Memorized alarm of stage I> O26 R 0 = I>-stage not alarmed 1 = I>-stage alarmed Memorized I> alarm relay O27 R 0 = signal not active 1 = signal active Memorized I 0 > alarm relay O28 R 0 = signal not active 1 = signal active Memorized I> alarm relay O29 R 0 = signal not active 1 = signal active SETTING VALUES Start value for stage I> S1 R,W(P) A Operate time for stage I> S2 R,W(P) s Start value for stage I 0 > S3 R,W(P) 2 20 A Operate time for stage I 0 > S4 R,W(P) s Start value for stage I> S5 R,W(P) 10 60% Operate time for stage t > S6 R,W(P) s Checksum of switchgroup SGF1 S7 R,W(P) Checksum of switchgroup SGF2 S8 R,W(P) Checksum of switchgroup SGB S9 R,W(P) Range selector for max phase analog output S10 R,W(P) 10, 20, 50,100, 200, 500 A Range selector for I 0 analog output S11 R,W(P) 5, 10, 20, 50, 100 A RECORDED AND MEMORIZED PARAMETERS Line current on phase L1 at alarm V11,V31 91 R A Line current on phase L2 at alarm V12,V32 92 R A Line current on phase L3 at alarm V13,V33 93 R A Neutral current I 0 at start or alarm V14,V34 94 R 0 70 A Phase unbalance I at start or alarm V15,V35 95 R % Duration of start of stage I> V16,V36 96 R % Duration of start of stage I 0 V17,V37 97 R % Duration of start of stage I> V18,V38 98 R % Time stamp of alarm V19,V39 99 R Y Y - M M - D D HH.MM;SS.sss Number of starts of stage I> V1 R Number of starts of stage I 0 > V2 R Number of starts of stage I> V3 R Alarming phase V4 R 1 = I>(L3), 2 = I>(L2), 4 = I>(L1), 8 = I 0 >, 16 = I Operation indicator V5 R

23 Data Code Data flow Value range direction CONTROL PARAMETERS Resetting of latched output relays V101 W 1 = reset Resetting of output relays and registers V102 W 1 = reset Event mask word for I> and I 0 > V155 R, W 0 255, see "Event codes" Event mask word for I> V156 R, W 0 15, see "Event codes" Event mask word for output signal events V157 R, W 0 63, see "Event codes" Opening of password for remote settings V160 W Changing or closing of password for remote settings V161 W (P) Activation of self-supervision IRF LED V165 W 1 = self-supervision IRF LED turned on Factory final test V167 W (P) 2 = format EEPROM Internal error code V169 R Data communication address of the module V200 R, W Data transfer rate V201 R, W 4.8 or 9.6 kbd Program version number V205 R 101 Event register reading L R time, channel number and event code Re-reading of event register B R time, channel number and event code Type designation of the module F R SPEF 3A2 C Reading of module status data C R 0 = normal state 1 = module been subject to automatic reset 2 = overflow of event register 3 = events 1 and 2 together Resetting of module state data C W 0 = resetting Time reading and setting T R,W s Date and time reading and setting D R,W YY-MM-DD HH.MM;SS.ms The event register can be read by the L command only once. If a fault occurs e.g. in the data transfer, the contents of the event register read by the L command may be re-read by using the B command. When required, the B-command can be repeated. Generally, the control data communicator reads the event data and forwards them to the output device continuously. Under normal conditions the event register of the module is empty. In the same way the data communicator resets abnormal status data, so this data is normally zero. The setting values S1 S11 are the setting values used by the fault indicator functions. All the settings can be read or written. A condition for writing is that a remote set password has been opened. When settings are changed, manually or remotely, the relay unit checks that the variable values are within the ranges specified in the technical data of the module. If not, the unit, will not store the value, but keeps the previous setting. 23

24 Fault codes A short time after the internal self-supervision system has detected a permanent relay fault the red IRF indicator is lit and a signal is delivered to the output connection X1-6. Further, in most fault situations, an auto-diagnostic fault code is shown on the display. This fault code consists of a red figure 1 and a green code number that indicates the fault type. The code number should be recorded and stated when service or repair is ordered. Below some fault codes that might appear with the unit SPEF 3A2 C: Fault code Type of error in module 30 Faulty programme memory (ROM) 50 Faulty work memory (RAM) 51 Parameter memory (EEPROM) block 1 faulty 52 Parameter memory (EEPROM) block 2 faulty 53 Parameter memory (EEPROM) block 1 and block 2 faulty 54 Parameter memory (EEPROM) block 1 and block 2 faulty with different checksums 56 Parameter memory (EEPROM) key faulty. Format by writing a "2" to variable V Too low value in reference channel with multiplier Too low value in reference channel with multiplier 5 67 Too low value in reference channel with multiplier Too high value in reference channel with multiplier Too high value in reference channel with multiplier 5 75 Too high value in reference channel with multiplier The I 0 hardware filter is faulty Maintenance and repair When the relay is operating under the conditions specified in the section "Technical data", it is practically maintenance-free. The relay modules include no parts or components subject to abnormal physical or electrical wear under normal operating conditions. If the environmental conditions at the fault indicator operating site differ from those specified, as to temperature, humidity, or if the atmosphere around the indicator contains chemically active gases or dust, the indicator ought to be visually inspected in association with the indicator secondary test. The visual inspection should focus on the following things: - Signs of mechanical damage to the fault indicator module, contacts and case - Signs of corrosion on terminals, in or outside the case If the relay fails in operation or if the operating values differ from those specified the relay should be given a proper overhaul. Major measures involving the electronics are to be taken by the manufacturer. Please contact the manufacturer or his nearest representative for further information about checking, overhaul and recalibration of the relay. Note! Static relays are measuring instruments and should be handled with care and protected against moisture and mechanical stress, especially during transport. Spare parts See chapter serial communication connections on page 5. 24

25 Dimensions and instructions for mounting The case is made of painted zinc coated steel sheet. The case text on the front is silk screen printed. The degree of protection is IP 20. The terminals consist of male and female part. To each terminal 1.5 mm 2 wires can be connected. The fault indicator is normally wall-mounted with screws or snapped onto a standard DINrail. The fault indicator must be earthed via protective earth terminal on the enclosure X ~95 DIM1.DRW φ 4, Ordering numbers SPEF 3A2 C-AA SPEF 3A2 C-BA RS AA RS BA The last letters of the ordering number indicate the rated frequency: AA f n = 50 Hz BA f n = 60 Hz Information required with order Example 1. Quantity and type designation 15 pcs SPEF 3A2 C-AA 2. Ordering number RS AA 3. Rated frequency f n = 50 Hz 4. Accessories 15 pcs SPA-ZP 27A07 5. Special requirements - 25

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