Micrologic control units 2.0 A, 5.0 A, 6.0 A and 7.0 A Low Voltage Products

Transcription

1 Micrologic conrol unis.0, 5.0, 6.0 and 7.0 Low Volage Producs User manual We do more wih elecriciy.

2 Micrologic conrol unis.0, 5.0, 6.0 and 7.0 Discovering your conrol uni Idenifying your conrol uni Overview of funcions 4 Seing your conrol uni 0 Selecing he ype of neural proecion 0 Seing procedure Seing he Micrologic.0 conrol uni Seing he Micrologic 5.0 conrol uni 3 Seing he Micrologic 6.0 conrol uni 4 Seing he Micrologic 7.0 conrol uni 5 Faul and saus indicaions 6 Reseing he faul indicaions and checking baery saus 6 Tesing he earh-faul and earh-leakage funcions 7 Menus 8 ccessing he s 8 Measuring phase currens 9 Displaying he maximum curren values 0 Reseing he maximum curren values Viewing he seings Technical appendix 4 Tripping curves 4 Changing he long-ime raing plug 6 Zone selecive inerlocking (ZSI) 7 Digial display 8 Thermal memory 9 Micrologic Schneider Elecric

3 long ime insananeous x seing long ime shor ime insananeous sd 3 4 I i x on I 0 off seing delay long ime shor ime insananeous sd I i on I 0 off x seing delay es Ig D.3 C G.3. B H.. I. on I ground faul long ime shor ime insananeous sd I i off x on I 0 off seing delay es I n 3 5 I earh leakage Discovering your conrol uni Idenifying your conrol uni Designaions ll Compac NS and Maserpac NT and NW circui breakers are equipped wih a Micrologic conrol uni ha can be changed on sie. Conrol unis are designed o proec power circuis and conneced loads. E5384 Micrologic.0 : basic proecion and ammeer Micrologic.0 E r a I Long ime + Insananeous E5450 Micrologic.0 Micrologic 5.0 : selecive proecion and ammeer X Y X: ype of proecion c for basic proecion c 5 for selecive proecion c 6 for selecive + earh-faul proecion c 7 for selecive + earh-leakage proecion Y: version number idenificaion of he conrol-uni generaion. "0" signifies he firs generaion. Z E5385 E5387 Micrologic 5.0 r 4 8 a E Ii I Long ime + Shor ime + Insananeous Micrologic 6.0 : selecive + earh-faul proecion and ammeer Micrologic 6.0 E5354 E5395 Z: ype of measuremen c for "ammeer" c P for "power meer" c H for "harmonic meer" c no indicaion: no measuremens I on I off E F r g a off Ii I Long ime + Shor ime + Insananeous g I Earh-faul proecion E5388 Micrologic 7.0 : selecive + earh-leakage proecion and ammeer Micrologic 7.0 E5354 E r a Ii I Long ime + Shor ime + Insananeous n I Earh-leakage proecion Micrologic Schneider Elecric

4 Presenaion op fasener boom fasener 3 proecive cover 4 cover opening poin 5 lead-seal fixure for proecive cover 6 long-ime raing plug 7 screw for long-ime raing plug 8 connecion wih circui breaker 9 infrared link wih communicaions inerfaces 0 erminal block for exernal connecions housing for baery digial display 3 hree-phase bargraph and ammeer djusmen dials 4 long-ime curren seing 5 long-ime ripping delay r 6 shor-ime pickup 7 shor-ime ripping delay sd 8 insananeous pick-up 9 insananeous pick-up Ii 0 earh-faul pick-up Ig earh-faul ripping delay g earh-leakage pick-up I n 3 earh-leakage ripping delay Indicaions 4 LED indicaing long-ime ripping 5 LED indicaing shor-ime ripping 6 LED indicaing earh-faul or earh-leakage ripping 7 LED indicaing auo-proecion ripping 8 LED indicaing an overload Navigaion E5389 E Micrologic 7.0 Micrologic % Micrologic long ime.7.8 r a E5394 E Micrologic long ime.7.8 r a 6 4 insananeous x seing Micrologic navigaion buon o change s 30 navigaion buon o view conens 3 buon for faul-rip rese and baery es Tes 3 es buon for earh-faul and earh-leakage proecion 33 es connecor long ime r a 6 4 shor ime 3 4 sd on I 0 off x seing delay I n 3 5 I () (ms) insananeous I i off es E Micrologic 6.0 long ime.7.8 r a 6 4 shor ime sd x on I 0 seing delay insananeous I i off earh leakage E long ime Ig B shor ime x seing D E F C G H I ground faul r a 6 4 sd on I 0 off delay g on I off insananeous I i off es Micrologic Schneider Elecric

5 Discovering your conrol uni Overview of funcions Curren proecion Proecion seings Depending on he ype of insallaion, i is possible o se he ripping curve of your conrol uni using he parameers presened below. E5358 Micrologic.0 0 I 3. curren seing (long ime). ripping delay r (long ime) for 6 x 3. pick-up (insananeous) E5359 Micrologic 5.0, 6.0, 7.0 I on I off E5386 Micrologic 6.0 I on I off E5396 Micrologic Ii I. curren seing (long ime). ripping delay r (long ime) for 6 x 3. pick-up (shor ime) 4. ripping delay sd (shor ime) 5. pick-up Ii (insananeous) g I n I. pick-up Ig (earh faul). ripping delay g (earh faul). pick-up I n (earh leakage). ripping delay (earh leakage) Long-ime proecion The long-ime proecion funcion proecs cables (phases and neural) agains overloads. This funcion is based on rue rms measuremens. Thermal memory The hermal memory coninuously accouns for he amoun of hea in he cables, boh before and afer ripping, whaever he value of he curren (presence of an overload or no). The hermal memory opimises he long-ime proecion funcion of he circui breaker by aking ino accoun he emperaure rise in he cables. The hermal memory assumes a cable cooling ime of approximaely 5 minues. Long-ime curren seing and sandard ripping delay r Micrologic conrol uni.0 and 5.0 curren seing = In x (*) ripping beween oher ranges or disable by changing raing plug.05 and.0 x ime delay r a.5 x accuracy: r a 6 x o -0 % r a 7. x * In: circui breaker raing Seing accuracy of he seing may be enhanced by using a differen long-ime raing plug. See he echnical appendix "Changing he long-ime raing plug". 4 Micrologic Schneider Elecric

6 For he characerisics and exernal wiring of he zone selecive inerlocking funcion, see he echnical appendix on "Zone selecive inerlocking". The porable es ki can be used o es he wiring beween circui breakers for he zone selecive inerlocking funcion. Shor-ime proecion c he shor-ime proecion funcion proecs he disribuion sysem agains impedan shor-circuis c he shor-ime ripping delay can be used o ensure discriminaion wih a downsream circui breaker c his funcion carries ou rue rms measuremens. c he I ON and I OFF opions enhance discriminaion wih downsream proecion devices c use of I curves wih shor-ime proecion: v I OFF seleced: he proecion funcion implemens a consan ime curve; v I ON seleced: he proecion funcion implemens an I inverse-ime curve up o 0. bove 0, he ime curve is consan. c zone selecive inerlocking (ZSI) The shor-ime and earh-faul proecion funcions enable ime discriminaion by delaying he upsream devices o provide he downsream devices he ime required o clear he faul. Zone selecive inerlocking can be used o obain oal discriminaion beween circui breakers using exernal wiring. Shor-ime pick-up and ripping delay sd Micrologic conrol uni.0, 5.0, 6.0 and 7.0 pick-up = x accuracy ± 0 % ime delay seings I OFF (ms) a 0 I ON I ON or sd (max reseable ime) I OFF sd (max break ime) Insananeous proecion c he insananeous-proecion funcion proecs he disribuion sysem agains solid shor-circuis. Conrary o he shor-ime proecion funcion, he ripping delay for insananeous proecion is no adjusable. The ripping order is sen o he circui breaker as soon as curren exceeds he se value, wih a fixed ime delay of 0 milliseconds. c his funcion carries ou rue rms measuremens. Insananeous pick-up Micrologic conrol uni.0 pick-up = x accuracy ± 0 % Micrologic conrol uni Insananeous pick-up Ii 5.0, 6.0 and 7.0 pick-up li = In x (*) OFF accuracy ± 0 % * In: circui-breaker raing 5 Micrologic Schneider Elecric

7 Discovering your conrol uni Overview of funcions Curren proecion Proecion of he fourh pole on four-pole circui breakers Proecion of he neural conducor depends on he disribuion sysem. There are hree possibiliies. Type of neural Neural unproeced Neural proecion a 0.5 In Neural proecion a In Descripion. The disribuion sysem does no require proecion of he neural conducor. The cross-secional area of he neural conducor is half ha of he phase conducors. c he long-ime curren seing for he neural is equal o half he seing value c he shor-ime pick-up for he neural is equal o half he seing value c he insananeous pick-up (Micrologic.0 ) for he neural is equal o half he seing value c he insananeous pick-up Ii (Micrologic 5.0 / 6.0 / 7.0 ) for he neural is equal o he seing value. The cross-secional area of he neural conducor is equal o ha of he phase conducors. c he long-ime curren seing for he neural is equal o he seing value c he shor-ime pick-up for he neural is equal o he seing value c he insananeous pick-ups and Ii for he neural are equal o he seing value. Earh-faul proecion on Micrologic 6.0 c an earh faul in he proecion conducors can provoke local emperaure rise a he sie of he faul or in he conducors. The purpose of he earh-faul proecion funcion is o eliminae his ype of faul. c here are wo ypes of earh-faul proecion. Type Residual Source Ground Reurn Descripion c he funcion deermines he zero-phase sequence curren, i.e. he vecorial sum of he phase and neural currens c i deecs fauls downsream of he circui breaker. c using a special exernal sensor, his funcion direcly measures he faul curren reurning o he ransformer via he earh cable c i deecs fauls boh upsream and downsream of he circui breaker c he maximum disance beween he sensor and he circui breaker is en meres. Micrologic conrol uni c earh-faul and neural proecion are independen and can herefore be combined. Earh-faul pick-up Ig and ripping delay g The pick-up and ripping-delay values can be se independenly and are idenical for boh he residual and "source ground reurn" earh-faul proecion funcions. 6.0 pick-up Ig = In x (*) B C D E F G H I accuracy In ± 0 % 400 < In In > ime delay seings I OFF (ms) a n (*) I ON I ON or g (max reseable ime) I OFF g (max break ime) * In: circui-breaker raing 6 Micrologic Schneider Elecric

8 Curren proecion and s Micrologic conrol uni Earh-leakage proecion on Micrologic 7.0 c he earh-leakage proecion funcion primarily proecs people agains indirec conac because an earh-leakage curren can provoke an increase in he poenial of he exposed conducive pars. The earh-leakage pick-up value I n is displayed direcly in amperes and he ripping delay follows a consan-ime curve c an exernal recangular sensor is required for his funcion c his funcion is inoperaive if he long-ime raing plug is no insalled c d proeced agains nuisance ripping. c k DC-componen wihsand class up o 0. Pick-up value I n and ripping delay 7.0 pick-up I n accuracy 0 o - 0 % ime delay seings (ms) (max reseable ime) (max break ime) Overload LED E5398 long ime r a 6 4 shor ime sd x on I 0 seing delay I n () 3 5 (ms) insananeous I i off es earh leakage This LED signals ha he long-ime curren seing has been overrun. The auo-proecion funcion (excessive emperaure or shor-circui higher han circui-breaker capaciy) opens he circui breaker and urns on he p LED. Cauion. If he circui breaker remains closed and he p LED remains on, conac he Schneider afer-sales suppor deparmen. Cauion. The baery mainains he faul indicaions. If here are no indicaions, check he baery. E5399 Faul indicaions Signals ripping due o an overrun of he long-ime curren seing. Micrologic 7.0 E5400 Signals ripping due o an overrun of he shor-ime pick-up or he insananeous pick-up / Ii. Micrologic 7.0 Signals ripping due o an overrun of he earh-faul pick-up Ig or he earhleakage pick-up I n. Signals ripping due o he auo-proecion funcion of he conrol uni. E540 Micrologic 7.0 E540 Micrologic Micrologic Schneider Elecric

9 Discovering your conrol uni Overview of funcions mmeer measuremens If no informaion is displayed on he screen, see he echnical appendix "Digial display". c all Micrologic conrol unis measure he rue rms value of currens c he mos heavily loaded phase is coninuously displayed on he digial screen c using he navigaion buons, i is possible o display successively he I, I, I3, neural IN, Ig, I N and sored-curren (maximeer) values c he percen load on each phase is displayed. bargraph displays he currens measured on phases, and 3 as a percenage of he long-ime curren seing. E x x 0.8 x 0.6 x 0.4 x 8 Micrologic Schneider Elecric

10 9 Micrologic Schneider Elecric

11 Seing your conrol uni Selecing he ype of neural proecion On four-pole circui breakers, i is possible o selec he ype of neural proecion for he fourh pole: c neural unproeced (4P 3D); c neural proecion a 0.5 In (3D + N/); c neural proecion a In (4P 4D). E5383 3D+N/ 4P 3D 4P 4D 0 Micrologic Schneider Elecric

12 Seing procedure Seing procedure. Open he proecive cover. E540 E54 Micrologic 7.0 Micrologic 7.0 = 40% 40%. Selec he desired seing. The se value is auomaically displayed on he digial screen in absolue value wih he relevan unis. c Curren in amperes ( and k); c Tripping delays in seconds. E54 Micrologic If no informaion is displayed, see he echnical appendix "Digial display". If no furher acion is aken, afer a few seconds, he display reurns o he main for curren measuremens. 4. Close he proecive cover and, if necessary, insall a lead seal o proec he seings. 40% 3 See he user manual for he porable es ki Using he porable es ki To es he conrol uni, connec he porable es ki via he es connecor. E540 E543 Micrologic 7.0 Micrologic % 40% Micrologic Schneider Elecric

13 Seing your conrol uni Seing he Micrologic.0 conrol uni E5366 The raing of he circui breaker in his example is 000. E60365 Se he hreshold values long ime insananeous x seing In = 000 = 0.7 = 400 = 3 x = 400 In = 000 In = 000 See pages 4 and 5 for informaion on he available seings E5368 Se he ripping delay E60366 long ime r a 6 4 r = second E5370 r Micrologic Schneider Elecric

14 Seing he Micrologic 5.0 conrol uni E5366 The raing of he circui breaker in his example is 000. E60367 Se he hreshold values long ime shor ime x seing insananeous I i off In = 000 = 0.7 = 400 = x = 800 Ii = 3 = 6000 In = 000 In = 000 See pages 4 and 5 for informaion on he available seings Se he ripping delay E5373 Thresholds I ON curve E537 I OFF curve E60368 long ime r a 6 4 r = second sd = 0. seconds Ii Ii shor ime sd on I delay I on I off Tripping delays I ON curve E5376 E5375 I OFF curve r r sd sd 3 Micrologic Schneider Elecric

15 Seing your conrol uni Seing he Micrologic 6.0 conrol uni E5366 The raing of he circui breaker in his example is 000. E544 Se he hreshold values long ime In = 000 = 0.7 = 400 In = 000 In = 000 shor ime x seing Ig D E F C G B H I insananeous I i off es = x = 800 Ii = 3 = 6000 B Ig = 640 ground faul See pages 4 o 6 for informaion on he available seings. Se he ripping delay E5373 Thresholds I ON curve E537 I OFF curve E6037 long ime r a 6 4 r = second E546 Ii E545 Ii shor ime ground faul sd on I 0 off delay g on I off es sd = 0. seconds I on I off g = 0. seconds Ig Ig Tripping delays E5376 I ON curve E5375 I OFF curve r r sd sd E549 E548 g g 4 Micrologic Schneider Elecric

16 Seing he Micrologic 7.0 conrol uni E5366 The raing of he circui breaker in his example is 000. In = 000 E540 Se he hreshold values long ime shor ime x I n () seing insananeous I i off es In = 000 = 0.7 = 400 = x = 800 Ii = 3 = 6000 I n = In = 000 ground faul See pages 4 o 7 for informaion on he available seings. Se he ripping delay E5373 E54 Thresholds I ON curve Ii E537 I OFF curve Ii E60373 long ime r a 6 4 shor ime sd on I 0 off delay (ms) es r = second sd = 0. seconds I on I off = 40 milliseconds ground faul I n Tripping delays E5376 I ON curve r E5375 I OFF curve r sd sd E543 5 Micrologic Schneider Elecric

17 Faul and saus indicaions Reseing he faul indicaions and checking baery saus The procedure for closing he circui breaker following a faul rip is presened in he circui-breaker user manual. Reseing he faul indicaions c deermine why he circui breaker ripped. The faul indicaion is mainained unil i is rese on he conrol uni. v press he faul-rip rese buon. E5439 Micrologic 7.0 v check he parameer seings of he conrol uni. Checking he baery E5440 Micrologic 7.0 Press he baery-es buon (same as he faul-rip rese buon) o display he baery saus. E544 Baery fully charged Baery half charged Change he baery If no informaion is displayed, eiher: c no baery is insalled in he conrol uni, or; c an auxiliary power supply is required. See he echnical appendix "Digial display". If he baery needs o be changed, please use he one wih Schneider caalogue number (characerisics given on he baery comparmen cover). E544 Changing he conrol-uni baery. Remove he baery cover. E5443. Remove he baery. 40% E Inser a new baery. Check he polariy. + E Pu he cover back in place. Press he baeryes buon o check he new baery. 40% 6 Micrologic Schneider Elecric

18 Tesing he earh-faul and earhleakage funcions Charge and close he circui breaker. Using a screwdriver, press he es buon for earh-faul and earh-leakage proecion. The circui breaker should open. E540 E5456 Micrologic 7.0 Micrologic % 40% If he circui breaker does no open, conac he Schneider afer-sales suppor deparmen. 7 Micrologic Schneider Elecric

19 Menus ccessing he s E5404 E5405 Symbols used: Briefly press a key. Three s may be accessed on Micrologic conrol unis, providing he following informaion: c phase curren measuremens I, I, I3, neural IN, earh-faul curren Ig on he Micrologic 6.0 conrol uni and earh-leakage curren I n on he Micrologic 7.0 conrol uni; c maximeer curren values for phases I, I, I3, neural IN, he maximum earhfaul curren Ig on he Micrologic 6.0 conrol uni and he maximum earh-leakage curren I n on he Micrologic 7.0 conrol uni; c proecion seings and ripping delays.. Measuremens. Maximeer 3. Seings Press and hold a key. I is possible a any ime o sop consuling a curren measuremen, a maximum curren value recorded by he maximeer or he seing values. fer a few seconds, he Micrologic conrol uni auomaically reurns o he main displaying he curren value of he mos heavily loaded phase. E5406 E5407 Max E5408 = The proecion seings can be displayed direcly on he digial display. Press he "" buon o access he maximum curren values measured by he maximeer. 4. The sysem reurns o he main "Measuremens". Press he "" buon o access he proecion seings and ripping delays. Press he "" buon o reurn o he curren measuremens. E Micrologic Schneider Elecric

20 Measuring phase currens Curren values may be read in he "Measuremens", which is also he main. If no paricular acion is aken, he sysem displays he curren value of he mos heavily loaded phase. Display of curren I. Display of curren I. E545 E546 "Measuremens" Phase is he mos heavily loaded. E5409 Press he "arrow" buon o go on o curren I. Press he "arrow" buon o go on o curren I3. Display of curren I3. Display of curren IN. E547 Press he "arrow" buon o go on o curren IN if he circui breaker is conneced o he neural. Display of curren Ig (Micrologic 6.0 ) or curren I n (Micrologic 7.0 ). The sysem reurns o he display of curren I. E548 E5409 E549 Press he "arrow" buon o go on o he earh-faul curren Ig or he earhleakage curren I n. Press he "arrow" buon o reurn o curren I. 9 Micrologic Schneider Elecric

21 Menus Displaying he maximum curren values Maximum curren values may be read in he "Maximeer". If no paricular acion is aken, he sysem reurns o he main. E5430 Display of he maximum I curren. MX E543 Display of he maximum I curren. MX "Maximeer". E5407 Max Press he "arrow" buon o go on o he maximum I curren. Display of he maximum I3 curren. Press he "arrow" buon o go on o he maximum I3 curren. Display of he maximum IN curren. E543 MX E5434 MX Press he "arrow" buon o go on o he maximum IN curren if he circui breaker is conneced o he neural. Display of he maximum Ig curren or he maximum I n curren. Press he "arrow" buon o go on o he maximum earh-faul curren Ig (Micrologic 6.0 ) or he maximum earh-leakage curren I n (Micrologic 7.0 ) The sysem reurns o he display of he maximum I curren. E5433 MX E5435 MX Press he "arrow" buon o reurn o he maximum I curren. 0 Micrologic Schneider Elecric

22 Reseing he maximum curren values Maximum curren values can be rese using he "Maximeer". Selec he maximum curren value o be rese (e.g. I max.). Rese. Selec anoher value o rese or reurn o he main. If no paricular acion is aken, he sysem reurns o he main. E5436 MX E5437 MX E5438 MX "Maximeer". E5407 Max Press he "arrow" buon as many imes as required o selec I max. Press and hold he "arrow" buon down for hree o four seconds. The curren value flashes during he rese, hen changes o he presen value (he new maximum). Press he "arrow" buon as many imes as required o selec anoher maximum value o rese or reurn o he main. Micrologic Schneider Elecric

23 Menus Viewing he seings Micrologic conrol uni E60374 Long-ime curren seing Selec he "Seings". The value is he firs displayed. = Long-ime ripping delay r Press he "arrow" buon o go on o he r value. r= s Shor-ime pick-up Press he "arrow" buon o go on o he shor-ime value. = Shor-ime ripping delay sd Press he "arrow" buon o go on o he sd value. sd= s Insananeous pick-up Press he "arrow" buon o go on o he insananeous value. = Or Insananeous pick-up Ii he insananeous Ii value. Ii= Earh-faul pick-up Ig Press he "arrow" buon o go on o he Ig value. Ig= Or Earh-leakage pick-up I n he I n value. I n= Earh-faul ripping delay g Press he "arrow" buon o go on o he g value. s Or g= Earh-leakage ripping delay he value. = s Press he "arrow" buon o reurn o he beginning of he. = Micrologic Schneider Elecric

24 3 Micrologic Schneider Elecric

25 Technical appendix Tripping curves Long-ime and insananeous proecion (Micrologic.0 ) E = r = s =.5 0 x I / Long-ime, shor-ime and insananeous proecion (Micrologic 5.0, 6.0 and 7.0 ) E = r = s I ON I OFF =.5 0 x Ii = 5. OFF () x 4 Micrologic Schneider Elecric

26 Earh-faul proecion (Micrologic 6.0 ) E Ig = J () 00 max I ON I OFF I / In 5 Micrologic Schneider Elecric

27 r r Technical appendix Changing he long-ime raing plug Selec he long-ime raing plug number of seing ranges for he long-ime curren seing are available on Micrologic conrol unis by changing he long-ime raing plug. The available raing plugs are lised below. Par number Seing range for he value 3354 sandard 0.4 o x low seing 0.4 o 0.8 x high seing 0.8 o x wihou long-ime proecion Cauion. Following any modificaions o he longime raing plug, all conrol-uni proecion parameers mus be checked. Change he long-ime raing plug Proceed in he following manner.. Open he circui breaker.. Open he proecive cover of he conrol uni. 3. Compleely remove he long-ime raing plug screw. E5378 E5379 Micrologic 7.0 Micrologic % 40% Cauion. If no long-ime raing plug is insalled, he conrol uni coninues o operae under he following downgraded condiions: c he long-ime curren seing is 0.4; c he long-ime ripping delay r corresponds o he value indicaed by he adjusmen dial; c he earh-leakage proecion funcion is disabled. E Snap ou he raing plug. Micrologic % E Clip in he new raing plug. Micrologic % long ime long ime Refi he screw for he long-ime raing plug. 7. Check and/or modify he conrol-uni seings. 6 Micrologic Schneider Elecric

28 Zone selecive inerlocking (ZSI) E5397 B Operaing principle c faul occurs a poin. Downsream device no. clears he faul and sends a signal o upsream device no., which mainains he shor-ime ripping delay sd or he earh-faul ripping delay g o which i is se. c faul occurs a poin B. Upsream device no. deecs he faul. In he absence of a signal from a downsream device, he upsream device immediaely rips wihou aking ino accoun is ripping-delay seings. If i is conneced o a device even furher upsream, i sends a signal o ha device, which delays ripping according o is sd or g seing. Noe : On a circui breaker likely o receive a ZSI signal, he sd and g ripping delays mus no be se o zero, as his would make discriminaion impossible. Connecions beween conrol unis logic signal (0 or 5 vols) can be used for zone selecive inerlocking beween he upsream and downsream circui breakers. c Micrologic 5.0, 6.0, 7.0. c Micrologic 5.0 P, 6.0 P, 7.0 P. c Micrologic 5.0 H, 6.0 H, 7.0 H. Cauion. If he proecion funcion is no used on circui breakers equipped for ZSI proecion, a jumper mus be insalled o shor erminals Z3, Z4 and Z5. If he jumper is no insalled, he shor-ime and earh-faul ripping delays are se o zero, whaever he posiion of he adjusmen dial. Wiring c maximum impedance:.7 Ω / 300 meres c capaciy of connecors: 0.4 o.5 mm c maximum cross-secional area of wires (including insulaion): 3.5 mm c wires: single or mulicore c maximum lengh: 3000 meres c limis o device inerconnecion: v he common ZSI - OUT - SOURCE (Z) and he oupu ZSI - OUT (Z) can be conneced o a maximum of 0 inpus; v a maximum of 00 devices may be conneced o an inpu ZSI IN CR (Z4) or GF (Z5) c connecions are made from he oupu ZSI - OUT (Z) on he downsream device o he inpu ZSI - IN - ST (Z4) and/or GF (Z5) on he upsream device. Terminals Z o Z5 correspond o he idenical indicaions on he circui-breaker erminal blocks. E60375 Terminal block for exernal connecions Z Z Z3 Z4 Z5 and/or Upsream circui breaker and/or Terminal block for exernal connecions Z Z Z3 Z4 Z5 Terminal block for exernal connecions Z Z Z3 Z4 Z5 Downsream circui breaker 7 Micrologic Schneider Elecric

29 Technical appendix Digial display For informaion on connecing an exernal power supply, see he elecrical diagrams in he circui-breaker user manual. c display of measuremens operaes wihou an exernal power supply. The digial display goes off if he curren drops below 0. (In = raed curren). c display back-lighing is disabled in he following siuaions: v curren less han on one phase; v curren less han 0.4 on wo phases; v curren less han 0. on hree phases. c he maximeer does no operae for currens under 0.. These hree funcions may be mainained by adding an exernal power supply. Even if an exernal power supply is insalled, he long-ime, shor-ime, insananeous and earh proecion funcions will no use i. 8 Micrologic Schneider Elecric

30 Thermal memory Thermal memory The hermal memory is a means o simulae emperaure rise and cooling caused by changes in he flow of curren in he conducors. These changes may be caused by: c repeiive moor saring; c loads flucuaing near he proecion seings; c repeaed circui-breaker closing on a faul. Conrol unis wihou a hermal memory (conrary o bimeal srip hermal proecion) do no reac o he above ypes of overloads because hey do no las long enough o cause ripping. However, each overload produces a emperaure rise and he cumulaive effec can lead o dangerous overheaing. Conrol unis wih a hermal memory record he emperaure rise caused by each overload. Even very shor overloads produce a emperaure rise ha is sored in he memory. This informaion sored in he hermal memory reduces he ripping ime. Micrologic conrol unis and hermal memory ll Micrologic conrol unis are equipped as sandard wih a hermal memory c for all proecion funcions, prior o ripping, he emperaure-rise and cooling ime consans are equal and depend on he ripping delay in quesion: v if he ripping delay is shor, he ime consan is low; v if he ripping delay is long, he ime consan is high. c for long-ime proecion, following ripping, he cooling curve is simulaed by he conrol uni. Closing of he circui breaker prior o he end of he ime consan (approximaely 5 minues) reduces he ripping ime indicaed in he ripping curves. 9 Micrologic Schneider Elecric

31 Schneider Elecric Indusries S 5, rue Nadar 9506 Rueil-Malmaison Cedex France Tel: +33 (0) Fax:+33 (0) hp:// s sandards, specificaions and designs develop from ime, always ask for confirmaion of he informaion given in his publicaion. This documen has been prined on ecological paper. Designed by: HeadLines Prined by: