TL;DR — Okudingeka Ukwazi
- Amabhulokhi esiphetho esinzima anesilinganiso esingu-150A anokwamukelwa kwentambo okungu-35mm² (AWG 2) ziyindinganiso yokusatshalaliswa kwamandla esikhungo sokulawula izimoto — enikeza izindawo zokuxhuma eziphephile nezihlelekile zezintambo ze-motor feeder ezifika ku-50mm².
- Ama-current okungena kwenjini (6-8× FLA) adinga amabhlogo e-terminal anesisindo esikhulu sokushisa — amabhlogo okulawula ajwayelekile alinganiselwe kugesi ozinzile ofanayo azohluleka ngaphansi kwemijikelezo yomsebenzi we-MCC ngoba awanawo umugqa wethusi wokumunca amandla okungena.
- Indawo emnandi engu-35mm² (AWG 2) akuyona into engahleliwe: ilinganisela kahle ubukhulu (150A kanye nomkhawulo wokuphepha ongu-25% ku-40°C), ukuphathwa kwentambo yomshini (i-radius egobile
- Ngokuqondile kusuka efektri yethu, amabhlogo e-terminal anzima abiza ngaphansi ngo-35-50% kunemikhiqizo yaseYurophu eqinisekisiwe yi-IEC/UL — enezikhathi zokuhola zamasonto ama-2-3 emikhiqizweni ejwayelekile yekhathalogi.
- Ukuhlanganiswa kwe-SCCR kuyingozi yoku-#1 yokuthobela imithetho ekukhethweni kwebhulokhi yokugcina ye-MCC — qinisekisa njalo ukuthi isilinganiso samandla okujikeleza okufushane se-terminal block sifana ne-SCCR iyonke ye-MCC (ngokuvamile kusuka ku-42kA kuya ku-65kA yemishini yesimanje).
Yini Echaza Ibhulokhi Yesiphetho Esinzima Sezikhungo Zokulawula Izimoto?
Ake ngichaze kahle ukuthi kusho ukuthini ngempela ukuthi “umsebenzi osindayo” — ngoba leli gama lisetshenziswa ngokunganaki kule mboni. Ibhulokhi yesiphelo esinzima, nganoma iyiphi incazelo enengqondo, yileyo eyenzelwe izilinganiso zamanje eziqhubekayo ze-100A kuya ku-400A, kanye nezinga lokwamukelwa kwentambo eliqala ku-10mm² (AWG 8) futhi lifinyelela ku-150mm² (300 kcmil). Lawa akuzona amabhlogo wokugcina owasebenzisela ukuxhumeka kwe-PLC I/O noma ama-loop ezinsimbi angu-4-20mA. Lawa amabhlogo ahlala phakathi kwebhasi elikhulu le-MCC kanye namayunithi okuqala enjini ngayinye — lawo aphethe amandla anele okusebenzisa injini yokungenisa engu-75kW (100 HP).
Embonini yethu, sidweba umugqa ocacile: Uma ibhulokhi yokugcina iphatha amandla okuhambisa injini — hhayi amandla okulawula, hhayi izintambo zesiginali, kodwa amandla angempela ezigaba ezintathu ajikeleza injini — iwela esigabeni sethu somkhiqizo osindayo. Lo mugqa ukhona ngesizathu esithile sobunjiniyela: amasekethe ezimoto aveza ukucindezeleka kukagesi okuthathu okungakwenzi amasekethe okulawula, futhi ukwakheka kwebhulokhi yokugcina kumele kubhekane nakho konke lokhu okuthathu ngesikhathi esisodwa.
Kungani Izikhungo Zokulawula Izimoto Zidinga Amabhulokhi Etheminali Ahlukene
Izikhungo zokulawula izimoto, ngogesi, zingenye yezindawo ezinonya kakhulu zokuxhuma amabhlogo e-terminal. Ngifunde lesi sifundo ngo-2012 lapho omunye wamakhasimende ethu okuqala ebika ukwehluleka kwe-terminal block ekufakweni kwe-MCC ngemuva kwezinyanga eziyisishiyagalombili zokusebenza - amabhlogo ayephumelele ukuhlolwa kwefektri ngamazinga aphakeme. Lapho sindiza unjiniyela wethu waya endaweni (isitshalo sokuhlanganisa izimoto eMichigan), sathola inkinga zingakapheli imizuzu eyi-15: amabhlogo okugcina ayenele ngokuphelele ekusebenzeni kwe-120A okuzinzile, kodwa ayebhekene nokukhuphuka kwe-720A izikhathi eziyisithupha ngehora njengoba ama-motor omugqa wokukhiqiza ayehamba futhi evala.
Lokho kuvakashela kanye nje kwashintsha kakhulu indlela esiklama futhi silinganise ngayo amabhlogo ethu okugcina esindayo. Nakhu okufunwa yizindawo ze-MCC ukuthi amabhlogo okugcina ajwayelekile angakwazi ukukufeza:
I-Inrush Current: Umbulali Ofihliwe
Ama-induction motors adonsa i-amperage yawo egcwele umthwalo (FLA) izikhathi ezingu-6-8 ngesikhathi sokuqala — injini engu-75kW ene-140A FLA izodonsa i-840-1120A cishe imizuzwana engu-2-5 ngesikhathi sokuqala ngaphesheya komugqa. Ngisho noma iziqalisi ezithambile zikhawulela ukungena ngokushesha ku-3× FLA, usabheka i-420A edlula ekuxhumaneni kwebhulokhi yesiphelo. Ngenxa yokuthi amabhlogo ajwayelekile e-terminal ahlolwa ukusebenza kokushisa ku-current elinganisiwe kuphela, hhayi ngenxa yokugcwala ngokweqile kwesikhathi esifushane, ingxenye yawo yethusi ayinawo umfutho wokushisa wokumunca amandla okungena ngaphandle kokudlula izinga lokushisa elithambile lendlu ye-PA66.
Ukudlidliza: I-Connection Loosener
Ama-MCC agcwele ama-contactor kagesi avala ngokoqobo futhi avuleke izikhathi eziyizinkulungwane ngosuku. Umsebenzi ngamunye we-contactor uthumela ukushaqeka komshini kulo lonke isakhiwo sesigaba esiqondile — futhi yonke ibhulokhi yokugcina efakwe kuleso sakhiwo iyakuzwa lokho. Amabhulokhi ajwayelekile esikulufo ane-torque yokuqinisa engu-1.2-1.5 Nm azokhululeka kancane kancane ngaphansi kwalokhu kudlidliza. Amabhulokhi aqinile asebenzisa izikulufo zensimbi ze-M5 noma ze-M6 ezine-torque engu-2.5-5.0 Nm, kanti i-geometry yesikulufo ifaka isici esizikhiyayo (i-conical spring washer noma indawo yokuxhumana ene-serrated) evimbela ukujikeleza ngaphansi kokudlidliza.
Isikhala Esivalekile kanye Nokucwilisa Ukushisa
Izingxenye ze-MCC eziqondile zigcwele kakhulu: amabha amabhasi, ama-circuit breaker, ama-contactor, ama-overload relay, ama-control transformer, kanye nama-terminal block konke kuncintisana ngesikhala endaweni ebiyelwe ye-NEMA 1 noma i-NEMA 12. Amazinga okushisa angaphakathi kwe-MCC esebenzayo avame ukufinyelela ku-50-55°C — 10-15°C ngaphezu kwesisekelo sesilinganiso esingu-40°C samabhulokhi esiphelo. Ku-55°C ambient, isilinganiso samanje esisebenzayo sebhulokhi yokugcina kumele sincishiswe ngo-12-15%, okusho ukuthi isilinganiso se-nameplate esingu-150A siba umthamo oqhubekayo ongu-128-132A. Amabhulokhi anzima anamabha amakhulu ethusi agcina umkhawulo omkhulu wokushisa kulesi simo esiqondile.
Uhla Lwezintambo Oluyi-35mm² (AWG 2): Kungani Lokhu Kuyindinganiso Ye-MCC
Umqhubi ongu-35mm² uhleli endaweni lapho kuhlangana khona imikhawulo emithathu yobunjiniyela ehlangana khona ekwakhiweni kwesikhungo sokulawula izimoto. Akuyona inombolo engahleliwe — kuwumphumela wokuthuthukisa ubukhulu, ukuphathwa kwemishini, kanye nezindleko.
| Ipharamitha | 25mm² (AWG 4) | 35mm² (AWG 2) | 50mm² (AWG 1/0) |
|---|---|---|---|
| Ububanzi bomoya ku-40°C (ithusi, umqhubi ongu-3 ku-conduit) | 110A | 145A | 170A |
| I-Ampacity ku-55°C (ingaphakathi le-MCC, lehlisiwe) | 93A | 123A | 144A |
| Isilinganiso sokuphepha esingaphezu kwesilinganiso sebhulokhi esingu-150A | -26% ❌ | +21% ✅ | +42% (okhulu kakhulu) |
| Ububanzi bangaphandle bekhebula (i-XLPE insulated) | ~14mm | ~16mm | ~19mm |
| Irediyasi encane yokugoba (nge-NEC ngayinye) | ~98mm | ~112mm | ~133mm |
| Izindleko ngemitha (ngokufanayo) | 0.75× | 1.00× | 1.40× |
Ithebula lisitshela indaba ngokucacile: i-35mm² iyisiqondisi se-goldilocks samasekethe e-motor angu-150A. Ikhebula elingu-25mm² alilingani ngobukhulu obungu-150A emazingeni okushisa aphezulu e-MCC — ubuyobe uthembele kumkhawulo wokushisa webhulokhi yesiphelo ukuze ukhokhele umqhubi ongaphansi ngobukhulu, okuyinto engalungile ekusetshenzisweni kobunjiniyela. Ikhebula elingu-50mm² liphephile kodwa likhulu kakhulu — libiza ngo-40% ngaphezulu, lidinga isikhala esengeziwe sokugoba, futhi alikuzuzisi lutho ekusebenzeni kukagesi ngoba ibhulokhi yesiphelo ngokwayo iyisici esikhawulelayo ku-150A.
Ubuchwepheshe Bokuxhumanisa Bezinhlelo Zokusebenza Ezinzima
Uma uvala ikhebula le-feeder yenjini elingu-35mm² ngaphakathi kwe-MCC, Ubuchwepheshe bokuxhumana bubaluleke kakhulu njengesilinganiso sebhulokhi yesiphelo uqobo. Sakha izinhlobo ezine zokuxhuma ezihlukile zomugqa wethu womkhiqizo osindayo, futhi ngayinye inesimo esithile sokusetshenziswa:
Ukuxhumeka kwe-Stud/Bolt (Kunconywa ku-≥35mm²)
I-stud yensimbi enentambo ye-M6 noma ye-M8 ene-hex nut kanye ne-spring washer yamukela ama-terminal endandatho anezimbobo. Lesi yisiphakamiso sethu esinamandla kakhulu kunoma yimuphi umqhubi ongu-35mm² nangaphezulu, ikakhulukazi ngokuxhumeka kohlangothi lomugqa (okungenayo) kuzinhlelo zokusebenza ze-MCC. Izizathu ziyathandeka: i-terminal yendandatho inikeza ukuthintana okungu-360-degree nxazonke kwe-stud, ukuxhumana komshini akuvimbeli ekudlidlizeni uma kucindezelwe kahle, futhi - okubaluleke kakhulu ekugcinweni - i-ring terminal inganqanyulwa futhi ixhunywe kabusha izikhathi eziningi ngaphandle kokulimaza umqhubi, okubaluleke kakhulu lapho amabhakede e-MCC edinga ukushintshwa ngesikhathi sokulungiswa kabusha komugqa wokukhiqiza.
I-Power Screw Clamp (Ye-10-35mm²)
Isikulufu sensimbi i-M5 noma i-M6 sishayela ipuleti lokucindezela elicindezela umqhubi ngokumelene nebha yamandla ethusi. Lolu uhlobo lwethu lokuxhuma oludumile kakhulu lweziphetho ze-motor feeder ebangeni elingu-10-35mm² ngoba luhlanganisa ukufakwa okusheshayo (ngaphansi kwemizuzwana engama-30 ngocingo ngalunye ne-screwdriver esebenza ngamandla) nokuthembeka okuhle kakhulu kwesikhathi eside. Isikulufu sisebenzisa i-torque engu-3.0-4.0 Nm — eyanele ukushisela imicu yomqhubi endaweni yokuxhumana yethusi efakwe ithini, okudala uxhumano olungenagesi olumelana nokuwohloka kokujikeleza kokushisa.
I-Box Lug/Saddle Clamp (Yezinhlobo Ezihlanganisiwe Zomqhubi Webhokisi)
Isibambo sesihlalo esinomumo we-U esinama-screw amabili sinikeza ukubamba okuzimele kuzo zombili izinhlangothi zomqhubi. Lo mklamo ubalulekile lapho kuqedwa ama-lead enjini ye-aluminium eceleni kwezintambo ze-copper feeder — ngoba uvumela ama-coefficient ahlukene okwandisa ukushisa kwe-aluminium (23×10⁻⁶/K) uma kuqhathaniswa nethusi (17×10⁻⁶/K) ngaphandle kokuthuthukisa izindawo ezishisayo esibonakalayo sokuxhumana.
Amabhulokhi Okuhambisa Amandla (Okuxhumanisa Ibhasi Eliyinhloko)
Lawa amabhlogo ethu amakhulu kunawo wonke, anezigxobo ezinentambo ze-M10 noma ze-M12 ezilinganiselwe ku-250-400A. Zisetshenziswa lapho i-busbar ye-MCC eqondile ixhuma khona kumakhebula okuhambisa angenayo — indawo yokuqala yokuxhuma esikhungweni sokulawula imoto. Kuleli zinga lamanje, ibhulokhi yokugcina iba yingxenye yesakhiwo, hhayi nje isixhumi sikagesi - amandla omshini avela ekugobeni kwekhebula elingu-150mm² kumele asekelwe yindlu yebhulokhi yokugcina kanye nokufakwa kwayo kwesitimela se-DIN, hhayi yi-stud yethusi kuphela.
Izitifiketi: Lokho Okuzodingwa Yimininingwane Yakho Ye-MCC
Imininingwane yokuthengwa kwesikhungo sokulawula izimoto ayicaci kahle ngezidingo zokuqinisekiswa kwebhulokhi yesiphelo. Uma imininingwane ifuna imishini ye-MCC ebhalwe ku-UL 845 (njengoba cishe wonke ama-MCC ezimboni aseNyakatho Melika enza), khona-ke yonke into engaphakathi - kufaka phakathi amabhlogo wokugcina - kumele ibe nophawu lokufakwa ohlwini lwe-UL olufanele.
Kumabhulokhi e-terminal asebenza kanzima kuzinhlelo zokusebenza ze-MCC, izitifiketi ezibalulekile yilezi:
I-UL 1059 (Ijwayelekile Yamabhulokhi Etheminali) — ihlanganisa amabhlogo okugcina afinyelela ku-1500V. Uhlelo lwe-UL 1059 6-2024, amabhlogo wokugcina kumele ahlolwe ukuthi ayakwazi ukumelana ne-dielectric, ukunyuka kwezinga lokushisa ku-current rated, kanye nokuthi angakwazi ukumelana ne-current current short-circuit. Amabhulokhi ethu omsebenzi osindayo abhalwe ku-UL aphethe izilinganiso ze-SCCR kusuka ku-10kA kuya ku-65kA kuye ngokuhlanganiswa kwedivayisi yokuvikela okuphezulu — futhi sinikeza amathebula okuxhumanisa e-SCCR kuwo wonke amaphepha edatha omkhiqizo.
I-CSA C22.2 Inombolo 158 — okulinganayo kwaseCanada, okudingekayo kuma-MCC afakwe eCanada. Ukuhlolwa kwe-CSA kwenezela ukuhlolwa komthelela obandayo ku--35°C okungadingi i-UL, okubalulekile ekufakweni kwe-MCC yangaphandle ezindaweni ezisenyakatho.
I-IEC 60947-7-1 — indinganiso yamazwe ngamazwe. Ngokwe isichibiyelo sakamuva, amabhlogo wokugcina kumele aveze ngokucacile ukuthi ugesi omelana nesikhathi esifushane (Icw) olinganiselwe — ugesi ongasetshenziswa yibhloko umzuzwana owodwa ngaphandle komonakalo. Kwibhulokhi ye-150A esindayo, inani le-Icw livame ukusuka ku-3.0kA kuya ku-4.5kA (umzuzwana owodwa), okumele lihlanganiswe namandla e-MCC e-upstream circuit breaker let-through.
Ukukhetha Umhlinzeki We-Terminal Block Onzima: Yini Ehlukanisa Ikhwalithi Nokuyekethisa
Ngifuna ukukhuluma ngalesi sihloko ngokuqondile okufanele ngoba Imakethe ye-terminal block isigcwele abahlinzeki abanikeza imikhiqizo efana nezithombe zekhathalogi kodwa esebenza ngendlela ehlukile kakhulu ngaphansi kwezimo zokusebenza zangempela ze-MCC.
Nakhu esikufundile ukuhlukanisa ibhulokhi yokugcina esindayo esezingeni eliphezulu kweyomkhiqizo - nokuthi yini okufanele uyiqinisekise lapho uhlola noma iyiphi umhlinzeki webhulokhi yesiphelo esindayo:
1. Isitifiketi sokuhlanzeka kwethusi. Ibhasi lethusi le-C11000 langempela liphethe amadokhumenti alandelela emuva endaweni yokuhluza ithusi. Ithusi elingelona iqiniso noma eliphinde lasetshenziswa — elivame kakhulu kumabhulokhi okugcina ashibhile — liqukethe ukungcola (ikakhulukazi insimbi nomoya-mpilo) okunciphisa ukuhanjiswa kwamandla ngo-5-15% futhi kudale izindawo ezishisayo endaweni ethile emingceleni yokusanhlamvu. Sinikeza izitifiketi zokuhlola umshini wokugaya zonke izinsimbi zethusi ezisetshenziswa emgqeni wethu onzima.
2. Ubukhulu be-tin plating. I-tin plating ku-copper busbar isebenza ngezinjongo ezimbili: ivimbela i-copper oxidation (okwandisa ukumelana nokuxhumana ngokuhamba kwesikhathi), futhi idala indawo ethambile, evumelanayo ehlanganisa i-conductor ngaphansi kwengcindezi yesikulufu. Ubukhulu beplati ejwayelekile embonini bungu-3-5μm; siplatisa sibe ngu-5-8μm ngoba u-2-3μm owengeziwe wandisa ifasitela lokuvikela ukushiswa kwe-oxidation kusukela eminyakeni engaba ngu-5 kuya eminyakeni engu-15+ ezindaweni ezilawulwayo zangaphakathi.
3. Ibanga lensimbi yesikulufu kanye nokwelashwa kokushisa. Izikulufo zokubambelela ezisekelweni esindayo kumele zigcine izakhiwo zazo zemishini phakathi nezinkulungwane zemijikelezo yokushisa kusukela ku--40°C kuya ku-+130°C. Sisebenzisa izikulufo zensimbi yekhabhoni zebanga lesi-8.8 ezine-zinc-nickel plating kanye ne-chromate conversion coating — le nhlanganisela inikeza ukumelana kokugqwala okungu-5× kwezikulufo ezijwayelekile ezine-zinc-plated futhi igcina amandla okubamba kulo lonke izinga lokushisa.
4. Ukwakheka kwezinto zendlu. Izindlu eziningi zamabhulokhi okugcina zibhalwe ukuthi "PA66" ngaphandle kokucacisa okuqukethwe yifayibha yengilazi. Iphesenti lokuqinisa i-fiber yengilazi (ngokuvamile i-25% noma i-30%) lithinta ngqo ukuzinza kobukhulu bendlu ngaphansi kokushisa — ku-130°C, indlu ye-PA66 GF25 igcina cishe u-40% wamandla ayo okudonsa okushisa kwegumbi, kuyilapho i-PA66 GF30 igcina u-55%. Kumabhulokhi asebenza kanzima asebenza emazingeni okushisa aphezulu e-MCC, umehluko phakathi kwe-GF25 ne-GF30 umehluko phakathi kwendlu egcina ubuqotho bentambo yesikulufu kanye nendlu engayigcini.
Ukuhlanganisa Amabhulokhi E-terminal Anzima Emiklamo ye-MCC: Ubunjiniyela Obusebenzayo
Njengoba sengihlinzeke ngamabhulokhi e-terminal kubakhiqizi be-MCC kanye nabakhi bamaphaneli iminyaka engaphezu kweshumi, nansi imininingwane yokuhlanganisa eyenza umehluko phakathi kokufakwa okuhlanzekile kanye nobunzima bokuxazulula izinkinga:
Ukuhlela Isikhala Se-Wireway. Izingxenye ze-MCC eziqondile ngokuvamile zinobubanzi be-wireway obungu-100-150mm ohlangothini lwesokudla. I-heavy duty terminal block assembly enezindawo ezingu-12 ku-15mm pitch ithatha u-180mm we-DIN rail — kanye ne-cable bend radii yama-conductor angu-35mm² engeza cishe u-110mm ohlangothini ngalunye. Lokhu kusho ukuthi ibhulokhi enezindawo ezingu-12 isebenzisa ngempumelelo isikhala sentambo esiqondile esingu-400mm, okumele sibalwe kumdwebo wokwakheka kwesigaba se-MCC ngaphambi kokuba intambo yokuqala idonswe.
Ukuphathwa Kokushisa. I-150A terminal block assembly enezikhundla ezingu-8 ezithwala isilinganiso esingu-110A ngesikhundla ikhiqiza cishe u-6-8W wokushisa ngesikhundla ngasinye ngenxa yokumelana nokuxhumana kanye nokulahlekelwa yi-busbar I²R — cishe isamba esingu-50-65W. Esigabeni se-NEMA 12 MCC esivaliwe esingenawo umoya ophoqelekile, lowo 65W uzophakamisa izinga lokushisa langaphakathi lesigaba cishe ngo-5-8°C ngaphezu kwesimo sezulu emjikelezweni womsebenzi wamahora ama-4. Lokhu kukhuphuka kwezinga lokushisa okwengeziwe kumele kwengezwe ekubalweni kwe-ambient derating — empeleni, ibhulokhi engu-150A ku-NEMA 12 MCC egcwele ngokugcwele ivame ukusebenza kahle njengebhulokhi engu-135A.
Izintambo ze-Terminal Block-to-Starter. Iphutha elivame kakhulu lokuxhuma izintambo esilibonayo ensimini ukusebenzisa izintambo ze-motor feeder kusukela ku-terminal block kuya ku-motor starter sisebenzisa ama-jumper amancane. Uma ibhulokhi yokugcina ilinganiselwe ku-35mm² engenayo futhi i-motor starter yamukela ama-lug angu-35mm², i-jumper ephakathi kwawo kumele ibe ngu-35mm² — hhayi u-16mm² noma u-25mm² ngoba nje kulula ukuyigoba. I-jumper engu-16mm² esekhethini engu-150A izosebenza ngokushisa okungu-30-40°C kunama-conductor angu-35mm² kuzo zombili izinhlangothi, okudala indawo ebuthaka ekushiseni abahloli abaya beyiphawula.
Izindleko Eziphelele Zobunikazi: Ngale Kwentengo Yokuthenga
Amaqembu okuthenga agxila entengo yeyunithi; onjiniyela bokulungisa bagxila ekuthembekeni. Izindleko eziphelele zokubalwa kobunikazi zihlanganisa le mibono — futhi ngokolwazi lwethu, kuyimpikiswano ekholisayo kakhulu yokutshala imali kumabhulokhi e-terminal asezingeni eliphezulu.
Ake sibale i-TCO yokuhlanganiswa kwebhulokhi yesiteshi esindayo enezikhundla ezingu-20 ku-MCC — siqhathanisa ikhambi eliqondile lomkhiqizi wekhwalithi ephezulu nokungeniswa kwempahla:
| Isici Sezindleko | Ibhulokhi ye-Premium (J-Guang, eqondile) | Ukungenisa Izimpahla |
|---|---|---|
| Intengo yokuthenga yokuhlanganisa enezindawo ezingu-20 | $48.00 | $28.00 |
| Umsebenzi wokufaka (amahora ama-2 × $65/ihora) | $130.00 | $130.00 |
| Ukulungiswa kwaminyaka yonke (ukuhlolwa kabusha kwe-torque, amahora angu-0.5 × $65/ihora) | $32.50 | $32.50 |
| Amathuba okwehluleka empilweni yenkonzo yeminyaka emi-5 | 0.5% | 3.2% |
| Izindleko ngomcimbi ngamunye wokwehluleka (isikhathi sokungasebenzi + ukushintshwa) | $2,800 | $2,800 |
| Ukwehluleka okulindelekile kubiza iminyaka engaphezu kwemi-5 | $14.00 | $89.60 |
| Isamba seminyaka emi-5 se-TCO | $354.50 | $410.10 |
Ibhulokhi ye-premium ibiza u-$20 ngaphezulu kusengaphambili kodwa isindisa u-$55.60 eminyakeni emihlanu - imbuyiselo engu-2.8× ekutshalweni kwemali okuqhubekayo. Futhi lokhu kubalwa akubandakanyi izindleko zesikhathi sokungasebenzi kokukhiqiza ngenkathi kufakwa ibhulokhi ehlulekile esikhundleni, okuthi emugqeni wokukhiqiza okhiqiza imali engenayo engu-$5,000/ihora, kungeze u-$10,000-20,000 ngomcimbi ngamunye wokwehluleka.
imibuzo ejwayelekile ukubuzwa
Q: Ingabe amabhlogo okugcina anzima angasetshenziswa kokubili ama-lead enjini yethusi kanye ne-aluminium?
Yebo — kodwa kuphela ngezici ezithile zomklamo. Ama-conductor e-aluminium adinga amabhlogo okugcina anezindawo zokuthintana zethusi ezimbozwe nge-tin noma ngesiliva kanye nezindlela zokuxhuma ezilinganiselwe ukusetshenziswa kwe-Al/Cu (bimetallic). I-IEC 60947-7-1, amabhlogo okugcina alinganiswe ngabaqondisi be-aluminium kumele ahlolwe okwengeziwe ngokujikeleza kokushisa (imijikelezo engu-500 phakathi kuka-25°C no-110°C) ngoba i-CTE ephezulu ye-aluminium idala ukucindezeleka okukhulu esibonakalayo sokuxhumana. Amabhulokhi ethu anesilinganiso se-Al/Cu asebenzisa izindawo zokuxhumana ezinamazinyo kanye nama-washers asentwasahlobo aseBelleville ukuze agcine ingcindezi yokuxhumana eqhubekayo naphezu kokwanda okuhlukile kokushisa komqhubi we-aluminium.
Q: Yikuphi ukulungiswa okudingekayo kuma-terminal block aqinile kusevisi ye-MCC?
Ukulungiswa kabusha kwe-torque minyaka yonke kwazo zonke izixhumi zezikulufo ezifinyelelekayo kuyimfuneko encane kakhulu. Sincoma futhi ukuhlolwa kwe-thermographic (ukuskena kwekhamera ye-infrared) ngesikhathi sokuvalwa kokulungiswa kwaminyaka yonke — ukunyuka kwezinga lokushisa okungaphezu kuka-15°C ngaphezu kwamabhulokhi etheminali aseduze kubonisa ukuxhumana okukhulayo okumelana kakhulu okudinga ukunakwa ngokushesha. Kumabhulokhi asezigabeni ze-MCC ezidlidliza kakhulu (lezo ezinabaqalayo abagijima ngebhayisikili izikhathi ezingaphezu kweziyi-10 ngehora), ukuhlolwa kwengxenye yonyaka kuwukuhlakanipha.
Q: Mangaki amabhlogo esiphetho esinzima angafakwa ku-single DIN rail ku-MCC?
Izici ezivimbelayo ukushabalaliswa kokushisa, hhayi isikhala esibonakalayo. Isitimela se-DIN esijwayelekile esingamamitha angu-1 esigabeni esiqondile se-MCC singathwala izikhundla ezingu-40-50 zamabhulokhi esindayo esindayo ku-pitch engu-20mm. Kodwa-ke, uma lawo mabhulokhi wonke ephethe ugesi ocishe ulinganiswe, umphumela wokushisa ohlangene ungadlula umthamo wokupholisa wemvelo wesigaba. Isiqondiso sethu sobunjiniyela: ungadluli izikhundla zomsebenzi osindayo ezingu-30 ngemitha ngayinye yomugqa wesitimela se-DIN ngaphandle kokuthi isigaba se-MCC sifaka umoya ophoqelekile — futhi njalo hlukanisa amaqembu amabhlogo anomoya ophakeme anezindawo okungenani ezimbili ezingenalutho noma amabhlogo esignali anomoya ophansi ukuze udale ama-thermal break endleleni yebhasi.
U: Ingabe ngidinga amabhlogo ahlukene e-terminal ama-motor aphethwe yi-VFD uma kuqhathaniswa nama-motor aphesheya komugqa ku-MCC efanayo?
Yebo — futhi lokhu kuyinto evame ukunganakwa. Ama-waveform okukhipha i-VFD aqukethe ama-harmonics aphezulu (ama-frequency okushintshana angu-2-16 kHz) akhulisa umphumela wesikhumba kuma-copper conductors futhi akhiqize ukushisa okwengeziwe kwe-I²R ekuxhumekeni kwe-terminal block. Ngokwesivivinyo sethu, ibhulokhi yokugcina engu-150A exhunywe ku-VFD output esebenza ku-8kHz switching frequency kufanele incishiswe ibe cishe ngu-130A (ukwehla okungu-13%) ukuze kubhekwe ukushisa okwengeziwe kwe-harmonic. Uma uxuba i-VFD kanye neziqalisi eziwela umugqa ku-MCC efanayo, chaza amabhlogo esiphetho asekelwe ekulinganisweni kwe-VFD ukuze kube nokuvumelana — ukucacisa ngokweqile isethi eyodwa yamabhlogo kushibhile kunokugcina izinto ezimbili ezihlukene zomugqa.
Q: Singakanani isikhathi sokuhola sokulungiswa kwebhulokhi yesiphelo esinzima esenziwe ngokwezifiso?
Ngomugqa wethu ojwayelekile wemikhiqizo esindayo (80A-400A), imikhiqizo yekhathalogi ithunyelwa zingakapheli izinsuku ezi-5-7 zebhizinisi isuka esikhungweni sethu saseNingbo. Ukucushwa ngokwezifiso — ukubalwa kwezigxobo okungejwayelekile, izilinganiso zamanje ezixubile, ikhodi yombala ekhethekile, ukumaka ngokwezifiso — kudinga amasonto ama-2-3 kufaka phakathi ukuvunyelwa kobunjiniyela kanye nokuhlolwa kwesihloko sokuqala. Sigcina isitoko se-buffer sawo wonke amaphrofayili e-copper busbar ajwayelekile kanye nezikhunta zezindlu, ngakho ukucushwa ngokwezifiso kunqunyelwe kakhulu isikhathi sokuhlanganiswa nokuhlolwa, hhayi ukutholakala kwezinto zokusetshenziswa. sara@nbjguang.com ngemininingwane yakho yesikhathi esiqondile sokuhola.
Kungani uJ-Guang engumhlinzeki wakho we-Terminal Block onzima?
Sesilokhu sikhiqiza amabhlogo e-terminal iminyaka eyi-15 — kusukela ngo-2010. Ngaleso sikhathi, sesithumele izikhundla ze-terminal block ezingaphezu kwezigidi ezingama-50 kumakhasimende emazweni angaphezu kwama-40. Umkhiqizo wethu onzima waklanywa ngqo ngenxa yalokho okuhlangenwe nakho kokuhluleka kwensimu ka-2012 eMichigan - futhi zonke izinqumo zokuklama emikhiqizweni yethu yamanje zibuyela emuva ezimweni zokusebenza ze-MCC zangempela, hhayi nje kuphela izincazelo zokuhlolwa kwelebhu.
Amandla ethu okukhiqiza amabhlogo esindayo ahlanganisa:
- Izilinganiso zamanje: 80A, 100A, 125A, 150A, 175A, 200A, 250A, 300A, kanye no-400A
- Izinhlobo zezintambo: 6mm² kuya ku-150mm² (AWG 10 kuya ku-300 kcmil)
- Izinhlobo zokuxhumeka: I-Stud/ibhawodi (M5-M12), i-power screw clamp, i-box lug/i-saddle clamp
- Izitifiketi: I-UL 1059 ibhalwe ohlwini, imakwe nge-CE, ihambisana ne-RoHS/REACH, i-ISO 9001:2008 QMS
- Izilinganiso ze-SCCR: 10kA kuya ku-65kA enamatafula amadivayisi okuvikela ahlanganisiwe
- Izinto zokwakha izindlu: I-PA66 GF30, UL94 V-0, CTI >400V
- Amakhono enziwe ngokwezifiso: Umkhiqizo we-OEM, imibala eyenziwe ngokwezifiso, ukucushwa kwesilinganiso esixubile, ukumaka okukhethekile
Ibhulokhi ngayinye yesiteshi esisindayo esiyithumelayo ihlolwa ngogesi ngo-100% — ukumelana ne-dielectric ku-voltage ekalwe ngo-2× + 1000V, ukulinganiswa kokumelana kokuthintana endaweni ngayinye yesiteshi, kanye nokuhlolwa okubonakalayo ngaphansi kokukhulisa okungu-10×. Lokhu akuyona indinganiso yemboni; kuyindinganiso yethu. Sayamukela ngoba izindleko zokwehluleka kwensimu - edumeleni, ekuthembekeni kwamakhasimende, kanye nasemalini yangempela - zincane kakhulu kunezindleko zokuhlola.
📞 Thola Isilinganiso noma Cela Amasampula Obunjiniyela
Sinikeza amasampula obunjiniyela mahhala kanye nemibhalo ephelele yokuhlola zingakapheli amahora angu-48. Xhumana nethimba lethu ku- sara@nbjguang.com noma shayela ucingo +86 574 63085228.
Dlulisa amehlo kuhlu lwethu oluphelele lwemikhiqizo ku- I-NINGBO J-GUANG ELECTRONICS — amabhlogo esiteshi esinzima, amabhlogo esiteshi sesitimela se-DIN, izixhumi ze-PCB, kanye nezixazululo zokuxhuma eziphelele.