10 Trip Devices MicroVersaTrip® RMS-9 Programmer ‘The MicroVersaTTrip® AMS-9 system for POWER BREAK® insulated case crcult breakers ‘consists af four parts: the oro- tection programmer, fhacshift tip device, current sensors and rating plugs. ‘The programmer contains a ‘auront sonsor-pawored, solid- State logic unit and inearpo- ‘tes rotary adjustment swich- 2 fof up to nine functions, a Well a5 targets for mechanical aul ip incheation, MicroVersaTrix® AMS‘ rep- resenis the laiest technology indigtal soid-siate programmers. RMS Digital Sensing of Sinusoidal and Non-sinusoidal McroVersalTip® RMS pro- ‘vides accurate overioad pro- tection for bath sinusoidal and on-sinusoidal curents by = rect measurement of the tue rms content of the current ‘wav. Tis is accomplished by ‘ricreprocassor cigtal sam- pling techniques. Therotore, te Beli state ri is not affected by component tolerance and dows nat require ‘compensation for signal ds tortion, Since the design is based on complementary mat« a axide (GMOS) technology, it is lass sensitive to extraneous ‘noise produced by Kahthing, instrumentation, rado. et. The sok stste micrapro- ‘cessor technology and fast ‘anaiog fo citi! Corveriers make it possible 0 messure the magnitude of the phase current over a number of ime poriods winin the eyela. Tho ‘Microversaiig® FIMS-O sam- ping rate of 27 per cycle for ‘each phase abows for ences fle than 1% on systems with distortons through the 48th harmonic, Tis dial sampling techrique provides the most accurate sysiem pro- tection for éstrbuton systonss that incude ac and dc varia rectifiers, induction heating, and other loads thal cause ‘hon sinusoidal currents. Full Function Trip Unit Available with Various Protection Feature Combinations “The MicroversaTo" RMS tip ine of programmers pro ‘wes manu Breaker to breaker select ane custom tad protecten. Shoc-tme nd Ground Foust nets ine ‘the flexibility of coordination with and witout an PT rare POWER BREAK® circu breakers are avllale with Standard Instantaneous. Flux Shifter Programmer ‘9 Function Current Sensors, Rating Plug 10.1 MieroVersaTip RMS-9 System Componentsor High Range Instantaneous, ‘and Ground Fault. All ro- grammers inci.de a clear plastic cover with for sealing for tmper-proot inetalation. Current Sensors Three toroidal current sensors provide maximum textty ‘and relisity with miner ‘sgnal ertoe Far sensors rated 2000 and less, the sxcond- fry ouiput at rated input cur- rent is 200ma; for 2500, 9000, and 40004 sensors, second: ary current is 400ma. Flux-shift Trip Device ‘The fuscshiter is @ low ener- 4y. postive action tripping do- \Wee that i automatically pow red and controted by the protection programmer. The lou energy signal from the Programmer counteracts the strength of a permanent mag- net in the fuxshite, lowing a spring to unseal the magnet and tip the breaker. Rating Plugs for Con- venient Flexibility AILRMS-8 programmers utc ‘abroad renge of fed Insialabie rating plugs for future up-ating capabiy, minimum size cable selection, and an extra dogroo of ‘coordination flexibly. xeuR v—_}————— around aweurien [FAULT; gual SIGNAL] RATING PLUG| oe AMPLIFIER ee 2 Siamnerva | FACEPLATE | saipurien | SWITGHES oc Fig. 11.4 Programmer Camponents: Power Supply Board, Logie BoarMicroVersaTrip® RMS-9 Programmer Tripping Functions 4. Gument Seting— ‘Standard 2. Long-time Delay— Standard 3. Long-Time Pickup Light Standard 4, Shorttrme Pickup OF 5, Adustabla Short-Time Dalay its FIN ce (OUT—Optinas 6, Instantanzous Pickup— Standard 2, Ground Fault Pickup ‘Opt ional 8, Ground Fault Golay with Fi IN or OUT— Optional 9 Rating Plug— Several plugs are avaliable ta onsily change tre brasker continucus am. ere rating (see Table 19.2 and 18.2) 10, Test Jack (for use with test bit cat, no, TVRMS) 11, Fault Trip Annunciators— Optional ‘Not Siow + Adjustable High Range Instantanecus— Optional + Zone Selective Intarlack Optonat ‘Available prograntener fun tion combinations are shown Table 18.1 oon | Fig. 12.1 MicroVersaTrip® AMS-9 Programmer Table 12.1 Basic Frame Selection, Stationary or Draw-out, UL Listed, 100% Equipment Rated with MicroVersaTrip” RMS-9 Programmer reame | rrame sae | Suasr Siatormy Sree Seo xo | Wears | Twrazss | roxzes | moss) 0 oa woo | Tomas | Tneess | Tomasi | Mossssd weo_|_ tomes | Thess | Temes | Tromso) = oo} seco | “TerssasS | Tarvewoss | teveioss | twcresoss Trrewess | furveress | Tevetass | Ttowess BoD as Tease —| Taramass | —TomENGE | TeaDaies Sol Tpasioss | THPesi0ss | Tozsiass | THoes10S5, oem Teatmese | Frseoces | Yeseanee | Waceanes am Tresesss | THPrseses | _Teesesss | Twcaseses 88 Teaness | rwhwaess | —vosesass | Twcamess| ro “om zexo_|_Frasonua_| wissnseo® | —veaoeass — | Treaonoss Oar wane oe Upto 2¢saconday connect. Fr up 8 secondary daconnac, wie Cat Na, TCL_—_35 or THOL__S& 000. ampstatorary ioaborvacs Verse ograTable 13.4 POWER BREAK® MicroVersaTrip® RMS-9 Programmer Characteristics ‘Gureet Bb 1B BS, 86,19 vi Steg BT BSB, 8, 10a Ring Pg Ae 22 Pe Fine a1 al Gert Seng) Leet eee Oa 2, 49,08, 20 Seconds Peup 15, 2 25,9, 45: 7. 0 naa of Goren Sora (Sh = ay I 0 Scone [osu «oun 10, 21,9 Sora ae Ap arg [ay 600, 2000 eo 00 acpetaian a (vomet Sr, 18 15285, : 19 teatantanroue | Mtioo of ating pig ame oxy | V8 8.8.76 23,5, 7.8,10 523.5; mee [wn Saris 12.9, 7.8.10, TR RE Te We ag amgu on) | 1923-5: 7-8 10.10.18 2,8 1.9410 19 2387 ign [Free Ap Rating [oo 00,2600 Ee woot) natantaneoes [yn Spore Pre [Muti ot tare $1 airy gy | 48 818 [Free Arp Ring [5e0 6, Bao Ee Ered arcane [Maer Basle serscr ame 2 29 a. 5,4, 4858 228, 2628, 08 247 | 22 28 20, 29 oat | ring Belay (in Wie [Petey Pot 1, 21, 3 Seconds ee delay shown at 20% of carer ping rw ‘D's ealnyanown st ower Io each bar. lenges wo = 70%, Grou laut kup dows not excued ¥200 amps. ‘a0Q0-e70 sarlonwy Breaker uses Versa progiaree: Soe crate © Tale 18.) page 18 far evalale characteris ‘be HOP anaes charm a 20% af pcp seg tame Table 13.2 POWER BREAK® Rating Plug Selection [=e ES Ee ie oe | a te | oe amps) (amp) 00 a (ope) (8) | (Aenpe) 00 = These = ee » | & rae a 3 Sesto m0 wo | ie 2 & wae i 225 TRAS225. 2 we » | 2 tress - wo | = od fa 300 Tress00 m0 oo Teen ‘soo ‘200 9200 = rae oe lm | & Tras i to ior & ries is =o wo | iow 2 Thiet = 7 som Tee = ia Tater i Tsstooe =o wooo | Bee ox Thieece pas Thee = Teese = Tae 0 vo) th ‘seo worn | sow | meses ae ee od m | = nas Toran oo rarer or 34 MicroVersaTrip® RMS-9 Programmer Tripping Functions (Continued) Current Setting (Long-Time Function) Moving from left to right on the curent axis, Fre 141, the upper par of the time cure peers rent curve is the loeg-ime re- om (gon. The curtent setting is * os sod to protect a crcut x ™ ‘against low magnitude aver- = ceuronts, The breaker tips bo- a ‘cause the current has exeoed- | ‘ed the current sating. I a a od gee breaker is protecting a motor, ICKUP ‘he accelerating tre can be ‘accommodated by setting the breaker to alow for a momen- tary delay while the motor has ‘chance to reach its normal ‘operating speed or full oad current. Short-Time Function ‘The mac porton of he uve st sherttma fune- fon Wie sed to pratt against higher magnitude Srarcuronis an ewer shat rout lals, Overcarent ua to shart eels gonor | alvin he one aften or moe | times fuiced curent ancis | = measured as symmotieal me | = Woot mesn square) sror-ce | st eurent Instantaneous Function At the bottom ofthe te cure rent curve isthe protective de co's instantaneous function. ‘The instantaneous trp posnt determines the level at which the Oreaker will tip without an intontiona ne day, Ts ir tmedale interuption ovcurs only as 8 result of a severe ‘overcurrent condition, such a3 f hightevel short circu. that wwould damage the electrical system if not itorupted. PICKUP orFt Function ‘An PL function is availible with MicroVersaTrip® RMS-9, THis provides a ramp function (Ft=constant in the short- |ime and ground fauft charac- ‘tmristic (s0e Fig. 15.1) that al ows mamum ccordination wih downstream thermal-mag- netic protective deviogs that {olow a curve instead of a ‘#quare path. The Fl function also allows tighter motor pro- fection by accommodating the shertime pickup remains just ‘sight higher than the steady State Staring curent. In other words, the path follows the hy- polenta instead of the ight lange. When the square short time path might intersect with ‘a downstream fuse or breaker, the Ft funetion permits the hatte delay path to veer in ont of the time current cauve for the downstream de Vee. Without this function, 2o- (ordination and selectviy ‘would be dificul to ata Ground Fat Protection ‘trough a conducing ‘gourd. Is usualy of a low Trognitude (ess than te lang: time pickup value) and not sensed by the protective de- ‘vee. Using modem electronic ground fault pickup levels and fee delay bands with Pt in ‘and out allow full siectly, ‘ensuring that only the bresker josest to the ground faut wil trip. Askin of zone selective inledoching for the ground fault funetion further enhances this protection by permiting “imed" tipping and closer back-up protection | PICKUP \. Fig. 15.1 Time Current Gurve Detection — Ground Fault ower *6 a MicroVersaTrip® RMS-9 Programmer Tripping Functions (Continued) Current Setting (Standard) “The adusisble caren sating ‘ares the lal of curent he breaker will carry indefinitely ‘without tipping, It is adjustable in eight steps from 60-1005 of rating lug rateg Long-Time Delay (Standard) “This long me delay ad- justmeni varias th tema it wil {aka the breaker to trp under susisined averioad coreitons. I provides the funcion of withstanding momentary ove loads such as motor starting, Wwoldeg. of other vercurert Ceneftene without iterpting the service Light (Standard) ‘The long-time pickup ight po vides visual indication that the breaker is experiencing an overload condition. Indication is provided by a ight-emiting ‘ode (LED), Light lashes when current value is 05% of Pickup and is on contruously Bt 100% of pickup. Saves test ‘and system start up ime. Short-Time Pickup (Optional) ‘This shorttime pickup ad- iustmont eons tr tue of ‘high cuvent the breaker can ‘camy for short periods of time without tripping. Permits dawn- Siream breakers to clear shor rca ls wie oping out the upstream protective device. Short-Time Delay ‘pent condition, thea mi (Optional) Sota a eeulaneae ‘The shorttime delay ace fustment is usedin conunctin High Range Tato posde ater se. instantaneous finament of coordnationbe- (Optional) IweonoFOu OOF: oe ajutte shorts rabishes he ee Fiera the Brosker wil wat bel re bon, use son re ‘sponding to the short-crouit Stanlancous setting i ad Goran! level Seleciad on he Salanaous sting ade Sortie tn pont jusabl in four sts siren {5 100 percent ol he crud * . breaker frame short-time as permiing mssmurn woe of et Instantaneous Pickup breakers shortime capabily. (Standard) eee ea tases Theinsiaiancows tip point tcion wnat oan determines the lavel at which tho beaker wil rp meron. OC tentional time delay (0.025, Doconds ores). Ts med 2 erupron occurs er as trast ofa severe Ovo" tone rime DELAY az, i | Fig, 16.1 Current Setting | 280 Fig, 16.3 Long-Time Pickup Light Fig. 16.2 Long-Time Delay | SHORT TM PKU Fig. 16.4 Short-Time PickupGround Fault Pickup and Ground Fault Delay (Optional) “Tho ground faut pickup ac justment coriros the level ot found fault current at which Greuit intemuption wil ooo. ‘To comply wih the 1087 No- ‘ional Electrical Code (NEC 230-95), no tip point Gxcaeds 4200 amperes. The comrnon square hres of the curve can be replaced with an Pt tune ton Wo facilitate coordination ‘wath downstream devices such 8 therma-magnatic breakers. and fuses whose time-currant ‘eurves do not ensily relate 10 ‘he square-thape soneing characterstes common fo sol. id slate bip devices ‘The ground fault delay ad iusiment is used to add a pre- ‘determined delay in tine to ‘the tip point once the: ground fault pickup level has been reached. Thi provides tripping ‘selectivity between main and feeder oF other downstream breakers. The ground fault unit also includes as standard so- lectable inverse Pt ramp to ‘substantially improve coord pation with downstream pro- tective eviews euch as fuses and thermal magnetic Sreut broakors, Memory Circuit Because of the tighly inte. ritlont and errabc nals of arcing ground faults, @ memo- fy creut has been incorpo" fated in al MicoversaTro* FRMS.9 ground faut sensing cereus 8s standard. The roma ereut intsgratos arc- ing taut euront wi te, 25- ‘sensaly summing th ino snitlnt ground curent spas. Inthe dagams # oan be gen fon the memory Re tion works Diagram A shovs 9 typical ground fault with halF-cycies, ‘whole cycles and multiple oy ‘des missing, as normally iagram 8 shows tip re- sponse of a typical ground fault function which does not include memory. The breaker aver trips because the time olay Grout: are reset with every missing oye .C shows response cf MareversaTap RMS ‘round ful ects to the Same ground fut the circuit's emery caries through the fmisang cycles and generals 2 tp signal atte the preset tie ota. [GROUND FAULT PICKUP Fig, 17.3 Ground Fault Pickup Fg. 17.5 Short Time Detey | Z| et LETT? 2a | swaswey INSTANTANEOUS PICKUP L € iL Fig. 17.2 Instantaneous Pickup Fig. 17.5 Memory Cireuit wMicroVersaTrip® RMS-9 Programmer Tripping Functions (Continued) SHORT CIRCUT ROUND FAULT | | | | Fault Trip Indi ‘hat the system must now en- aul Trip Indicators gine tree othe Mah Inceators are designed to. —Garrent faut und iment ‘duce system downtine Dy Sanur. -enaiyzing any overcurent tsut The Zone Selective nix and identifying its cause. Me- lock module, Figure 182, re- rusiTo chanical pop-out type indics- —_ceives a signal from a down= coals ‘Ors are avaiable On the BAO strearn MicraVersaTTrip® garner ideryeg eve RMS programmer (Logic) Fig. 18.1 Faull Trp Indicators lead or short circuit aver- ‘which causes the module to ‘surent faulis when breakers tanemita low-kvel ireriock 7 are ordered wahout intapral signal to a MicroVersaTep. Source ‘rOund fault protection. Indica RMS-@ programmer upstream. tors are avaliable to entty The intalock signal actvatas ‘overload, short cicuitand the LED portion of an LED. ‘round fault vps —for breake — Transiser Opto-solator in the ‘rs suppliog with intogral Upstream programmer causing ‘round faut protecton. See tha fixed delay band to shit Figure 18:1 from “MIN” to the program= Zone Sel Sana om he Shon ‘one Selective Interlocking “Time and Ground Faut func: tions are capable of boing The standard means of ob rocked, ning soleetuily between Zone eslective i main and fecder breakers is is avalable forthe ground fault fy incorporating programmers furcten ony, of rhe ground ‘oi umnecoardrated tip faullard short hme ogc Stacting te larhest Sow tact ts ferbest dor lating Plug ‘ima delay, and progessively (Standard) increasing the tine delay as Various ratings plugs are avai “Output” from Programmer you got closer to the main able to fx the ampere rating a to Protective device. Te de- equal fo or lowor han fo ee ‘advantage in this meties i Senscr ampere rang as in Downs pen ee TT esa Tebe 182 Cormectons Cormectone oe | wing Table 18.1 Fig 182 MulthZone Interlocking POWER BREAK® Programmer Suffix Selection ‘oursc | ouscrar | ar zene] z | a ea Se a = |? 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