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- Technical Reference Manual, General
ABB REX 521 Technical Reference Manual, General
Summary of REX 521
Page 1
Protection relay rex 521 technical reference manual, general.
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Protection relay technical reference manual, general © copyright 2004 abb oy, distribution automation, vaasa, finland 3 rex 521 1mrs 751108-mum issued: 27.06.2001 version: f/10.08.2004 contents 1. About this manual .....................................................................6 1.1. Copyright...
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4 protection relay technical reference manual, general rex 521 4.1.8.1. High-speed power output (hspo) ..................... 24 4.1.8.2. Single-pole power outputs (po) ......................... 24 4.1.8.3. Signalling outputs (so) ...................................... 25 4.1.9. Testing inputs and ou...
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Protection relay technical reference manual, general rex 521 5 9.2. General principle of application data mapping ............................63 9.3. Principle of the protection functions mapping .............................64 9.4. Class 2 data .........................................................
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6 1mrs 751108-mum protection relay technical reference manual, general rex 521 1. About this manual 1.1. Copyrights the information in this document is subject to change without notice and should not be construed as a commitment by abb oy. Abb oy assumes no responsibility for any errors that may app...
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1mrs 751108-mum rex 521 7 protection relay technical reference manual, general 1.4. Abbreviations 1.5. Related documents manuals for rex 521 parameter and event lists for rex 521 ascii american standard code for information interchange crc cyclic redundancy check ct current transformer di digital in...
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8 1mrs 751108-mum protection relay technical reference manual, general rex 521 tool-specific manuals 1.6. Document revisions 1.7. Safety information • cap505 installation and commissioning manual 1mrs751273-men • cap505 operator’s manual 1mrs751709-men • cap505 protocol mapping tool operator’s manua...
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1mrs 751108-mum rex 521 9 protection relay technical reference manual, general 2. Introduction 2.1. General the protection relay rex 521 is designed for protection, control, measuring, and supervision in medium voltage networks. Typical applications include incoming and outgoing feeders as well as s...
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10 1mrs 751108-mum protection relay technical reference manual, general rex 521 2.2. Application the rex 521 is designed for protection of incoming and outgoing feeders in medium voltage distribution substations. Further, the relay can, for example, be applied to back-up protection of power transfor...
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1mrs 751108-mum rex 521 11 protection relay technical reference manual, general for more information, see rex 521 technical reference manual, standard configurations (see “related documents” on page 7). Control functions io cb1 cocb1 x x x x x x x x x x x x io ind1 coind1 x x x x x x x x x x x x io ...
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12 1mrs 751108-mum protection relay technical reference manual, general rex 521 2.3. Hardware versions table 2.3.-1 hardware versions of rex 521 relay type rex 521 version name basic medium high sensor rex521xbxxx rex52 1xmxx x rex521xhxxx rex521xsxxx transformer modules (mim) 1 1 1 1 transformers •...
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1mrs 751108-mum rex 521 13 protection relay technical reference manual, general 3. Requirements if the environmental conditions differ from those specified in section “technical data” on page 44, as to temperature and humidity, or if the environmental conditions around the protection relay contain c...
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14 1mrs 751108-mum protection relay technical reference manual, general rex 521 4. Technical description 4.1. Functional description 4.1.1. Parametrization to ensure that a protection function block protects the feeder in the desired manner, the default values of parameters must be checked and set b...
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1mrs 751108-mum rex 521 15 protection relay technical reference manual, general rstmain.Tif fig. 4.1.1.2.-1 main dialog box of the relay setting tool 4.1.1.3. Relay setting tool view to improve usability, a rex 521 specific pull-down menu, view, with three views has been created to the relay setting...
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16 1mrs 751108-mum protection relay technical reference manual, general rex 521 parameters. In that case the disturbance recorder drec will be cleared. Measured values and registered data, for example current, digital input states, can be uploaded by means of the measurements & registered data view....
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1mrs 751108-mum rex 521 17 protection relay technical reference manual, general when starting again, the relay display shows the text :warning eeprom -> flash on the display. This means that the calibration parameters have been read from the mim card and copied to the non-volatile memory of the cpu ...
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18 1mrs 751108-mum protection relay technical reference manual, general rex 521 4.1.4. Auxiliary voltage for its operation, the protection relay requires a secured auxiliary voltage supply. The protection relay’s internal power supply module forms the voltages required by the protection relay electr...
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1mrs 751108-mum rex 521 19 protection relay technical reference manual, general 4.1.5. Overtemperature indication the rex protection relay includes an internal temperature supervision function. The cpu module issues an internal alarm signal when overtemperature has been detected inside the relay enc...
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20 1mrs 751108-mum protection relay technical reference manual, general rex 521 the scaling factor is calculated channel by channel as follows: scaling factor = i nmd / i np, where example: the scaling factors for the analog channels can be set via the hmi of the protection relay or with the relay s...
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1mrs 751108-mum rex 521 21 protection relay technical reference manual, general values to be set for a current sensor (rogowski coil): • secondary rated voltage of the current sensor used at the preset primary rated current (100...300 mv) • primary rated current of the current sensor used (1...6000 ...
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22 1mrs 751108-mum protection relay technical reference manual, general rex 521 voltage divider: 4.1.6.3. Calculated analog channels in case that no measuring devices are applied for measuring neutral current (io), the calculated (virtual) channel ios can be used in some of the configurations. See s...
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1mrs 751108-mum rex 521 23 protection relay technical reference manual, general fig. 4.1.7.1.-1 filtering of a digital input the figure above illustrates the input filtering. At the beginning, the input signal is at high state, the first low state is filtered and no input status change is detected. ...
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24 1mrs 751108-mum protection relay technical reference manual, general rex 521 4.1.8.1. High-speed power output (hspo) the high-speed power output hspo1 can be connected as a double-pole output where the object to be controlled (for example a circuit breaker) is electrically connected between the t...
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1mrs 751108-mum rex 521 25 protection relay technical reference manual, general po1connrex fig. 4.1.8.2.-1 single-pole power outputs (po1...3) 4.1.8.3. Signalling outputs (so) the signalling relay outputs (so1 and so2) are not heavy-duty outputs and thus they cannot be used for controlling, for exam...
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26 1mrs 751108-mum protection relay technical reference manual, general rex 521 when testing the general output relays, the user should notice, that normal operation of the relay cannot be disconnected. If an output relay is permanently activated by the configuration, it cannot be deactivated for te...
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1mrs 751108-mum rex 521 27 protection relay technical reference manual, general should the external shunt resistance be used, it has to be calculated not to interfere with the functionality of the supervision or the trip coil. Too high a resistance will cause too high a voltage drop, jeopardizing th...
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28 1mrs 751108-mum protection relay technical reference manual, general rex 521 tcsopen fig. 4.1.10.-2 operating principle of the trip-circuit supervision, with an external resistor. The tcs blocking switch is open, enabling trip-circuit supervision independent of circuit breaker position. If there ...
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1mrs 751108-mum rex 521 29 protection relay technical reference manual, general when the self-supervision detects a fault, different measures are taken depending on the severity of the fault. If the fault is fatal, the microcontroller tries to get the system to work by restarting ten times. If this ...
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30 1mrs 751108-mum protection relay technical reference manual, general rex 521 irfoutputrex fig. 4.1.11.1.-1 self-supervision output (irf) when a fault has been detected, the green ready led indicator starts blinking, a fault indication text is displayed on the hmi and an event “irf activated” (e31...
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1mrs 751108-mum rex 521 31 protection relay technical reference manual, general 4.1.12. Serial communication the protection relay has two serial communication ports, one on the front panel and the other on the rear panel. The connector located on the front panel is a standard abb optical connector t...
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32 1mrs 751108-mum protection relay technical reference manual, general rex 521 4.1.12.1. Optical communication port on the rear panel the fibre-optic interface on the rear panel contains two optical connectors, tx (x3.2) and rx (x3.3). The connectors are used for interfacing the unit to an optical ...
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1mrs 751108-mum rex 521 33 protection relay technical reference manual, general 4.1.12.3. Front panel optical connection for a pc the front connector is standardized for abb relay products and requires an opto- cable (abb art. No 1mkc950001-1). The connector supports only the spa bus protocol, and i...
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34 1mrs 751108-mum protection relay technical reference manual, general rex 521 fig. 4.1.12.5.-1 example of a spa-based substation automation system in the case of longer transmission distance, for example between microscada system and a substation, the system configuration presented in the followin...
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1mrs 751108-mum rex 521 35 protection relay technical reference manual, general fig. 4.1.12.5.-2 example of a spa-based substation automation system with a longer transmission distance 4.1.12.6. Lon bus the protection relay is able to interface to the substation automation system with the lon commun...
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36 1mrs 751108-mum protection relay technical reference manual, general rex 521 lonsysrex_a fig. 4.1.12.6.-1 example of a lon-based substation automation system in the system described in the figure above, communication is usually arranged as shown in the table below. The lag 1.4 default communicati...
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1mrs 751108-mum rex 521 37 protection relay technical reference manual, general 4.1.12.7. Iec 60870-5-103 bus the rex 521 includes an unbalanced iec 60870-5-103 slave communication interface. The interface provides a fixed cross-coupling between the rex 521 application (indications, commands and pro...
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38 1mrs 751108-mum protection relay technical reference manual, general rex 521 at physical level, the modbus systems may use different physical interfaces, for example, rs-485 or rs-232 (see figure 4.1.12.8.-1). Both the rs-485 two-wire interface and the optical rs-232 interface are supported by re...
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1mrs 751108-mum rex 521 39 protection relay technical reference manual, general 4.1.12.9. Dnp 3.0 bus the rex 521 can also be connected to a dnp 3.0 system. The dnp 3.0 protocol is used in a substation automation system for connecting the protection devices to a system level device. A daisy chain ne...
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40 1mrs 751108-mum protection relay technical reference manual, general rex 521 “net messages” state the parameter should be in the “net messages” state if the time synchronization is taken from one of the following sources: spa bus • time synchronization is received from the spa master device. Iec ...
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1mrs 751108-mum rex 521 41 protection relay technical reference manual, general 4.1.15. Indication leds the relay is provided with three indication leds (green, yellow and red). With latching/non-latching, steady/blinking light the leds indicate different states and operations of the relay. For more...
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42 1mrs 751108-mum protection relay technical reference manual, general rex 521 in hmi, the state of the alarm leds is shown bit-wise starting from the right with led1. The leds that were activated by writing to parameter alarm led states can be acknowledged by pressing the [c] button for 2 s in the...
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1mrs 751108-mum rex 521 43 protection relay technical reference manual, general 2. Depending on printer, the print size may vary: test print the label on paper before printing it on transparency. To adjust the print height to the maximum height of the label (106 mm), use the zoom option of the print...
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44 1mrs 751108-mum protection relay technical reference manual, general rex 521 4.2. Design description 4.2.1. Technical data table 4.2.1-1 energizing inputs rated frequency 50.0/60.0 hz current inputs rated current 0,2 a/1 a/5 a thermal withstand capability continuously 1.5 a/4 a/20 a for 1 s 20 a/...
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1mrs 751108-mum rex 521 45 protection relay technical reference manual, general table 4.2.1-5 power outputs max. System voltage 250 v ac/dc continuous carry 5 a make and carry for 0.5 s 30 a make and carry for 3 s 15 a breaking capacity when control circuit time constant l/r 48/110/220 v dc 5 a/3 a/...
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46 1mrs 751108-mum protection relay technical reference manual, general rex 521 table 4.2.1-8 electromagnetic compatibility tests the emc immunity test level fulfills the requirements listed below 1 mhz burst disturbance test, class iii, iec 60255-22-1 common mode 2.5 kv differential mode 1.0 kv ele...
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1mrs 751108-mum rex 521 47 protection relay technical reference manual, general modbus protocol baud rates 0.6/1.2/2.4/4.8/9.6/19.2 kbps data bits 7/8 (ascii/rtu) parity no parity/odd/even stop bits 1/2 modbus modes ascii, rtu dnp 3.0 protocol baud rates 0.3/0.6/1.2/2.4/4.8/9.6/19.2 kbps data bits 8...
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48 1mrs 751108-mum protection relay technical reference manual, general rex 521 4.2.2. Terminal diagram of rex 521: basic fig. 4.2.2.-1 terminal diagram of rex 521: basic 1a 5a 1a 5a 1a 5a 1a 5a x1.1 12 11 8 7 6 5 4 3 2 1 10 9 x4.2 di1 di2 di3 di4 di5 di6 di7 di8 5 6 7 8 9 10 11 12 13 14 15 16 17 18...
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1mrs 751108-mum rex 521 49 protection relay technical reference manual, general 4.2.3. Terminal diagram of rex 521: medium fig. 4.2.3.-1 terminal diagram of rex 521: medium 1a 5a 1a 0,2a 100v 1a 5a 1a 5a 1a 5a x1.1 16 15 14 13 12 11 8 7 6 5 4 3 2 1 10 9 18 x4.2 di1 di2 di3 di4 di5 di6 di7 di8 5 6 7 ...
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50 1mrs 751108-mum protection relay technical reference manual, general rex 521 4.2.4. Terminal diagram of rex 521: high fig. 4.2.4.-1 terminal diagram of rex 521: high 1a 5a 1a 0,2a 100v 100v 100v 100v 1a 5a 1a 5a 1a 5a x1.1 16 15 14 13 12 11 8 7 6 5 4 3 2 1 10 9 19 18 22 21 27 25 24 x4.2 di1 di2 d...
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1mrs 751108-mum rex 521 51 protection relay technical reference manual, general 4.2.4.1. Terminal diagram of h08 configuration fig. 4.2.4.1.-1 terminal diagram of rex 521: h08 configuration 1a 5a 1a 0,2a 100v 100v 100v 100v 1a 5a 1a 5a 1a 5a x1.1 16 15 14 13 12 11 8 7 6 5 4 3 2 1 10 9 19 18 22 21 27...
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52 1mrs 751108-mum protection relay technical reference manual, general rex 521 4.2.5. Terminal diagram of rex 521: sensor fig. 4.2.5.-1 terminal diagram of rex 521: sensor 1a 5a 1a 0,2a 100v x1.1 16 15 14 13 12 11 8 7 6 5 4 3 2 1 10 9 19 18 22 21 27 25 24 x2.1 x2.2 x2.3 diff diff diff x2.4 x2.5 x2....
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1mrs 751108-mum rex 521 53 protection relay technical reference manual, general 4.2.6. Terminal connections fig. 4.2.6.-1 rear view of rex 521 basic 1 fig. 4.2.6.-2 rear view of rex 521 medium 1 1. Service pin is mounted if the hw version contains lon rearviewbasic_a 1 2 3 4 5 6 7 8 9 10 11 12 13 14...
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54 1mrs 751108-mum protection relay technical reference manual, general rex 521 fig. 4.2.6.-3 rear view of rex 521 high 1 fig. 4.2.6.-4 rear view of rex 521 sensor 1 1. Service pin is mounted if the hw version contains lon. Rearviewmedium 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 x4.2 x4.1 1 2 3 ...
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1mrs 751108-mum rex 521 55 protection relay technical reference manual, general 5. Service when the protection relay is used under the conditions specified in section 4.2.1. Technical data, it is practically maintenance-free. The relay electronics include no parts or components subject to abnormal p...
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56 1mrs 751108-mum protection relay technical reference manual, general rex 521 6. Ordering information when ordering rex 521 protection relays, specify the following: • order number • quantity • additional language each protection relay has a specific order number that identifies the protection rel...
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1mrs 751108-mum rex 521 57 protection relay technical reference manual, general 7. Revision history of rex 521 7.1. Revision identification the main releases of rex 521 products are differentiated with the revision and configuration revision letters in the order number (see “ordering information” on...
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58 1mrs 751108-mum protection relay technical reference manual, general rex 521 8. Index a alarm leds ............................................................................................. 41 activating .............................................................................................
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1mrs 751108-mum rex 521 59 protection relay technical reference manual, general g graphical i/o setting tool ....................................................................... 16 h hardware versions .................................................................................... 12 hmi .......
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60 1mrs 751108-mum protection relay technical reference manual, general rex 521 r rated values ............................................................................................. 19 real-time clock ........................................................................................ 17 ...
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1mrs 751108-mum rex 521 61 protection relay technical reference manual, general t temperature supervision .......................................................................... 19 terminal connections ............................................................................... 53 terminal dia...
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62 1mrs 751108-mum protection relay technical reference manual, general rex 521 9. Appendix a: iec 60870-5-103 bus 9.1. Functions supported by rex 521 9.2. General principle of application data mapping the interface between the rex 521 physical applications and the iec 60870-5-103 application layer ...
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1mrs 751108-mum rex 521 63 protection relay technical reference manual, general 9.3. Principle of the protection functions mapping the rex 521 applications, whose modularization is based on trip stages, have been mapped into the iec 60870-5-103 information numbers according to the following model: f...
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64 1mrs 751108-mum protection relay technical reference manual, general rex 521 9.5. Default mappings explanations to the table 9.5.-1: st status a according to the iec 60870-5-103 standard b according to “digitale stationsleittechnik - ergänze empfehlungen zur anwendung in verteilnetzstationen” p p...
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1mrs 751108-mum rex 521 65 protection relay technical reference manual, general 3i>>> non-directional overcurrent start>>> p 162 96 1 1 1, 9 noc3inst 3i>>> non-directional overcurrent trip>>> p 162 98 0 1 1 noc3inst 3i>-> directional overcurrent general start p 164 84 1 1 1, 9 doc6low 3i>-> directio...
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66 1mrs 751108-mum protection relay technical reference manual, general rex 521 i0 cb1: closing time p 242 205 0 1 1 cocb1 i0 cb1: command status p 242 206 0 1 1 cocb1 control position (local/remote) p 250 220 1 1 1, 9 system auxiliary input 1 (digital input 6) a *) 27 1 1 1, 9 system auxiliary inpu...
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1mrs 751108-mum rex 521 67 protection relay technical reference manual, general *) the signal type ftyp corresponds with the unit function type. Unit function type may be adjusted via the function type parameter **) breaker failure is generated by all the protection functions ***) also dpi values 0 ...
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68 1mrs 751108-mum protection relay technical reference manual, general rex 521 class 2 measurand sets explanations to the table 9.5.-3: the measurand sets 2, 3, 5, 6, 7, 8 and 9 are not relevant for the basic and medium versions of the protection relay. The default measurand set is 11. *) according...
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1mrs 751108-mum rex 521 69 protection relay technical reference manual, general example if the set no 11 is used, the asdu octets will look like in the following figure: iecexamp fig. 9.5.-1 example of asdu octets 9 cot adr 135 140 il1 il2 il3 io 5 uo typeid vsq = num of data function type informati...
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70 1mrs 751108-mum protection relay technical reference manual, general rex 521 10. Appendix b: parameters visible only in the relay input 1 state input 2 state input 3 state input 4 state input 5 state input 6 state input 7 state input 8 state input 9 state input states output states test mode acti...
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1mrs 751108-mum rex 521 71 protection relay technical reference manual, general 11. Appendix c: parameters which cause reset rated frequency select io voltage combine il1: scaling il2: scaling il3: scaling io: scaling iob: scaling uo: scaling u1: scaling u2: scaling u3: scaling u12: scaling u23: sca...
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72 1mrs 751108-mum protection relay technical reference manual, general rex 521 corr. Factor 1 current trafo 5 displ. Error 1 current trafo 5 corr. Factor 2 current trafo 5 displ. Error 2 current trafo 5 second. Voltage voltage trafo 1 primary voltage voltage trafo 1 corr. Factor voltage trafo 1 dis...
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1mrs 751108-mum rex 521 73 protection relay technical reference manual, general 12. Appendix d: parameters which require test mode input 1 state input 2 state input 3 state input 4 state input 5 state input 6 state input 7 state input 8 state input 9 state input states output states activate irf.
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Abb oy distribution automation p.O. Box 699 fi-65101 vaasa finland tel. +358 10 22 11 fax. +358 10 224 1094 www.Abb.Com/substationautomation 1m r s 7 511 08 -m u m en 0 8 .2 00 4.