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- Technical Reference Manual, General
ABB REX 521 Technical Reference Manual, General
Summary of REX 521
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Rex 521 protection relay technical reference manual, general.
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3 protection relay technical reference manual, general rex 521 1mrs 751108-mum issued: 27.6.2001 version: b/05.07.2002 checked: ml approved: mk we reserve the right to change data without prior notice. Contents 1. Safety information ......................................................................
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4 1mrs 751108-mum protection relay technical reference manual, general rex 521 4.1.12.4.Spa bus ............................................................. 25 4.1.12.5.Lon bus ............................................................ 26 4.1.12.6.Iec 60870-5-103 bus ................................
Page 5: 1. Safety
1mrs 751108-mum protection relay technical reference manual, general rex 521 5 1. Safety information dangerous voltages can occur on the connectors, even though the auxiliary voltage is disconnected national and local electrical safety regulations must always be followed the device contains componen...
Page 6: 2. Introduction
6 1mrs 751108-mum protection relay technical reference manual, general rex 521 2. Introduction this document provides a general description of the protection relay rex 521 revision b. For more information about the earlier revisions, please refer to section “revision history of the rex 521” on page ...
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1mrs 751108-mum protection relay technical reference manual, general rex 521 7 2.2. Application the rex 521 is designed for protection of incoming and outgoing feeders in medium voltage distribution substations. Further, the relay can, e.G., be applied to back-up protection of power transformers and...
Page 8: 3. Requirements
8 1mrs 751108-mum protection relay technical reference manual, general rex 521 3. Requirements if the environmental conditions differ from those specified in section “technical data”, as to temperature and humidity, or if the environmental conditions around the protection relay contains chemically a...
Page 9: 4. Technical
1mrs 751108-mum protection relay technical reference manual, general rex 521 9 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 be...
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10 1mrs 751108-mum protection relay technical reference manual, general rex 521 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 tool. )lj 5hod\6hwwlqj7rroylhzv the settings view includes the parame...
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1mrs 751108-mum protection relay technical reference manual, general rex 521 11 recorded values are stored from start, trip and other important events. After an auxiliary power break, time and date and fault currents for the three last events can be viewed by navigating to the “recorded values” sect...
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12 1mrs 751108-mum protection relay technical reference manual, general rex 521 4.1.4.2. Low auxiliary voltage indication the relay is provided with a low auxiliary voltage indication feature. The power supply module issues an internal alarm signal when a drop in the power supply voltage is detected...
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1mrs 751108-mum protection relay technical reference manual, general rex 521 13 when scaling factors are used, it should be noted that they affect the operation accuracy of the relay. The accuracies stated in the description of each function block (in the cd-rom technical descriptions of functions) ...
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14 1mrs 751108-mum protection relay technical reference manual, general rex 521 9doxhvwrehvhwirudyrowdjhwudqviruphu • rated voltage of primary voltage transformer (0...440 kv) • rated voltage of voltage input (same as the secondary rated voltage of the primary voltage transformer connected to the vo...
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1mrs 751108-mum protection relay technical reference manual, general rex 521 15 5rjrzvnlfrlo 9rowdjhglylghu primary values and measurement device settings the conversion between primary and per unit values are based on the analogue scales of the i l1 (i l1 pu-scale), i 0 (i 0 pu-scale), i 0b (i 0b p...
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16 1mrs 751108-mum protection relay technical reference manual, general rex 521 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. The second low state is longer than the set f...
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1mrs 751108-mum protection relay technical reference manual, general rex 521 17 )lj +ljkvshhggrxeohsrohsrzhurxwsxw+632 the high-speed power output hspo1 can also be connected as a single-pole power output where the object to be controlled (e.G. A circuit breaker) is electrically connected in series ...
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18 1mrs 751108-mum protection relay technical reference manual, general rex 521 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 e.G. A circuit breaker. Available relay contacts are normally open/norma...
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1mrs 751108-mum protection relay technical reference manual, general rex 521 19 4.1.10. Trip-circuit supervision the trip-circuit supervision consists of two functional units: • a current limiter including the necessary hardware elements • a software-based function block, named tcs the supervision o...
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20 1mrs 751108-mum protection relay technical reference manual, general rex 521 )lj 2shudwlqjsulqflsohriwkhwulsflufxlwvxshuylvlrqzlwkrxwdq h[whuqdouhvlvwru7kh7&6eorfnlqjvzlwfklvvhweorfnlqjwkh7&6 zkhqwkhflufxlweuhdnhulvrshq )lj 2shudwlqjsulqflsohriwkhwulsflufxlwvxshuylvlrqzlwkdqh[whuqdo uhvlvwru7kh7&...
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1mrs 751108-mum protection relay technical reference manual, general rex 521 21 the microcontroller and the program execution are supervised by a watchdog once every 100 ms. The selector, the a/d converter and other measuring input electronics are tested by checking a very accurate reference voltage...
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22 1mrs 751108-mum protection relay technical reference manual, general rex 521 even a total breakdown of the relay, e.G. On loss of power supply, will be detected as the irf relay operates in a fail-safe mode, causing a signal when the relay drops off. The serial communication will also indicate lo...
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1mrs 751108-mum protection relay technical reference manual, general rex 521 23 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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24 1mrs 751108-mum protection relay technical reference manual, general rex 521 the incoming optical fibre is connected to the receiver, input rx, and the outgoing optical fibre to the transmitter, output tx. Special attention should be paid when handling, mounting and connecting fibre-optic cables....
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1mrs 751108-mum protection relay technical reference manual, general rex 521 25 4.1.12.4. Spa bus the spa bus protocol uses an asynchronous serial communication protocol (1 start bit, 7 data bits + even parity, 1 stopbit). Adjustable parameters are “baud rate” (default 9,6 kbps) and “spa address” (s...
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26 1mrs 751108-mum protection relay technical reference manual, general rex 521 )lj ([dpsohrid63$edvhgvxevwdwlrqdxwrpdwlrqv\vwhpzlwkd orqjhuwudqvplvvlrqglvwdqfh 4.1.12.5. Lon bus the protection relay is able to interface to the substation automation system with the lon communication protocol. The lo...
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1mrs 751108-mum protection relay technical reference manual, general rex 521 27 )lj ([dpsohrid/21edvhgvxevwdwlrqdxwrpdwlrqv\vwhp in the system described in the figure above, communication is usually arranged as shown in the table below. The lag 1.4 default communication settings may be loaded by sel...
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28 1mrs 751108-mum protection relay technical reference manual, general rex 521 4.1.12.6. 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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1mrs 751108-mum protection relay technical reference manual, general rex 521 29 4.1.13. Time synchronization the time synchronization ( configuration\time ) of the protection relay can be given from different sources: 1. The time can always be given manually from the front panel. 2. The time synchro...
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30 1mrs 751108-mum protection relay technical reference manual, general rex 521 • optically isolated serial communication port $gglwlrqdoihdwxuhvriwkhglvsod\ • contrast adjustment with temperature compensation • backlight control 4.1.15. Indication leds the relay is provided with three indication le...
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1mrs 751108-mum protection relay technical reference manual, general rex 521 31 table 4.2.1-3 digital inputs type ps_87h (rex521xxhxx) ps_87l (rex521xxlxx) operating range, dc 80…265 v dc (for di9 18...265 v) 18...265 v input voltage, dc 110/125/220 v (for di9 also 24/48/60 v) 24/48/60/110/125/220 v...
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32 1mrs 751108-mum protection relay technical reference manual, general rex 521 table 4.2.1-7 standard tests insulation tests dielectric test iec 60255-5 test voltage 2 kv, 50 hz, 1 min. Impulse voltage test iec 60255-5 test voltage 5 kv, unipolar impulses, waveform 1,2/50 µ s, source energy 0.5 j i...
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1mrs 751108-mum protection relay technical reference manual, general rex 521 33 table 4.2.1-9 data communication rear interface, connector x3.2 and x3.3 fibre-optic interface iec_103 bus or spa bus, selectable. Also lon bus in the rex 521 xxxxl versions. Data transfer rates spa bus: 4.8/9.6/19.2 kbp...
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34 1mrs 751108-mum protection relay technical reference manual, general rex 521 4.2.2. Terminal diagram of the rex 521: basic )lj 7huplqdogldjudpriwkh5(;%dvlf 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 1 2 x3.1 di...
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1mrs 751108-mum protection relay technical reference manual, general rex 521 35 4.2.3. Terminal diagram of the rex 521: medium )lj 7huplqdogldjudpriwkh5(;0hglxp 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 8 9 10 11 12...
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36 1mrs 751108-mum protection relay technical reference manual, general rex 521 4.2.4. Terminal diagram of the rex 521: high )lj 7huplqdogldjudpriwkh5(;+ljk 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 di3 di4 di5 d...
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1mrs 751108-mum protection relay technical reference manual, general rex 521 37 4.2.5. Terminal diagram of the rex 521: sensor )lj 7huplqdogldjudpriwkh5(;6hqvru 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 x2.6 diff diff ...
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38 1mrs 751108-mum protection relay technical reference manual, general rex 521 4.2.6. Terminal connections )lj 5hduylhzriwkh5(;%dvlf )lj 5hduylhzriwkh5(;0hglxp 1. Service pin is mounted if the hw version contains lon rearviewbasic 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 4 5 6 7...
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1mrs 751108-mum protection relay technical reference manual, general rex 521 39 )lj 5hduylhzriwkh5(;+ljk )lj 5hduylhzriwkh5(;6hqvru 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 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 x3.1 1 2 3 4 5 6 7 8 9 10 x3.2 x3.3 ce made in finlan...
Page 40: 5. Service
40 1mrs 751108-mum protection relay technical reference manual, general rex 521 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...
Page 41: 6. Ordering
1mrs 751108-mum protection relay technical reference manual, general rex 521 41 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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42 1mrs 751108-mum protection relay technical reference manual, general rex 521 7. Revision history of the rex 521 7.1. Revision identification the main releases of the rex 521 products are differentiated with the revision and configuration revision letters in the order number (refer to “ordering in...
Page 43: 8. References
1mrs 751108-mum protection relay technical reference manual, general rex 521 43 8. References 0dqxdoviruwkh5(; 3dudphwhudqghyhqwolvwviruwkh5(; 7rrovshflilfpdqxdov • technical reference manual, standard configurations 1mrs751802-mum • operator’s manual 1mrs 751107-mum • installation manual 1mrs 75052...
Page 44: 9. Index
44 1mrs 751108-mum protection relay technical reference manual, general rex 521 9. Index a analogue channels ..................................................................................... 12 auxiliary power .................................................................................... 1...
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1mrs 751108-mum protection relay technical reference manual, general rex 521 45 power supply .............................................................................................. 11 protocols iec 60870-5-103 ............................................................... 24, 28, 29, 48 lon ...
Page 46: 10. Customer
46 1mrs 751108-mum protection relay technical reference manual, general rex 521 10. Customer feedback date: to fax: +358 10 224 1094 category: comment query complaint in case of feedback related to a specific product, please state the name of the product. Product: description (what happened in the n...
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1mrs 751108-mum protection relay technical reference manual, general rex 521 47 service report for the rex 521 name of the station/project ___________________________________________________ (fill in this form. Use one form per relay.) date and time_______________________ relay information environme...
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48 1mrs 751108-mum protection relay technical reference manual, general rex 521 11. Appendix a: the iec 60870-5-103 bus 11.1. Functions supported by the rex 521 11.2. The general principle of application data mapping the interface between the rex 521 physical applications and the iec 60870-5-103 app...
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1mrs 751108-mum protection relay technical reference manual, general rex 521 49 11.3. The principle of the protection functions mapping the rex 521 applications, whose modularisation is based on trip stages, have been mapped into the iec 60870-5-103 information numbers according to the following mod...
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50 1mrs 751108-mum protection relay technical reference manual, general rex 521 11.5. Default mappings explanations to the table 11.5.-1: st status a according to the iec 60870-5-103 standard b according to “digitale stationsleittechnik - ergänze empfehlungen zur anwendung in verteilnetzstationen” p...
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1mrs 751108-mum protection relay technical reference manual, general rex 521 51 table 11.5.-1class 1 data signals function block iec name st ftyp inf num gi typ cot function block (abb name) io> non-directional earthfault general start a 160 67 1 2 1, 9 nef1low io> non-directional earthfault trip> a...
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52 1mrs 751108-mum protection relay technical reference manual, general rex 521 0-->i ar: cb opened manually or remotely p 169 160 0 1 1 ar5func 0-->i ar: cb opening failure p 169 161 0 1 1 ar5func 0-->i ar: closing inhibited p 169 162 0 1 1 ar5func 0-->i ar: lockout p 169 164 1 1 1, 9 ar5func i0 cb...
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1mrs 751108-mum protection relay technical reference manual, general rex 521 53 **) breaker failure is generated by all the protection functions sync1 synchro-check/voltage check, st 1, sc ok p 218 2 1 1 1,9 scvcst1 sync1 synchro-check/voltage check, st 1, alarm not passed p 218 3 1 1 1,9 scvcst1 f1...
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54 1mrs 751108-mum protection relay technical reference manual, general rex 521 commands explanations to the table 11.5.-2: 1) note! When controlling the output relays by using the iec_103 protocol, the interlocking of the standard configuration is bypassed. It is not allowed to use the same output ...
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1mrs 751108-mum protection relay technical reference manual, general rex 521 55 class 2 measurand sets explanations to the table 11.5.-3: the measurand sets 2, 3, 7 and 9 are not relevant for the basic and medium versions of the protection relay. The default measurand set is 11. *) according to the ...
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56 1mrs 751108-mum protection relay technical reference manual, general rex 521 ([dpsoh if the set no 11 is used, the asdu octets will look like in the following figure: )lj ([dpsohrq$6'8rfwhwv 9 cot adr 135 140 il1 il2 il3 io 5 uo iecexamp typeid vsq = num of data function type information number d...
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1mrs 751108-mum protection relay technical reference manual, general rex 521 57 12. 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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58 1mrs 751108-mum protection relay technical reference manual, general rex 521 13. Appendix c: parameters which cause reset rated frequency select io voltage combine il1: scaling il2: scaling il3: scaling io: scaling iob: scaling uo: scaling second. Current current trafo 1 primary current current t...
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1mrs 751108-mum protection relay technical reference manual, general rex 521 59 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 displ. Error voltage trafo 1 second. Voltage voltage trafo 2 prim...
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60 1mrs 751108-mum protection relay technical reference manual, general rex 521 14. 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 substation automation p.O. Box 699 fin-65101 vaasa finland tel. +358 10 22 11 fax. +358 10 224 1080 www.Abb.Com/substationautomation 1 m r s 75110 8-m u m e n 07.20 02.