Qalabka korantada-hooseeya iyo kuwa dhexdhexaadka ah waxay u adeegaan jagooyin kala duwan nidaamka qaybinta awooda, markaa iibsadayaashu waa inaysan dooran dhexdooda iyaga oo ah inay yihiin cabbiro kale oo golaha wasiirada ah. Qalabka korantada dhexdhexaadka ah wuxuu helaa, beddelaa oo ilaaliyaa awoodda qaybinta ka hor beddelka-soo-dejinta ama marinka shabakadda MV. Qalabka korantada yar ayaa u qaybiya tamarta ka dib marka loo beddelo quudiyeyaasha, matoorada, dhismooyinka, dabaysha ama culaysyada kale. Xulashada saxda ah waxay raacdaa jaantuska hal-line, korantada nidaamka magac ahaan iyo kan ugu sarreeya, heerka khaladka, dhul-dhigista, falsafada ilaalinta, jadwalka culeyska, habaynta beddelka, isku-xidhka fiilooyinka, deegaanka iyo heerka la adeegsan karo. Mashaariic badan ayaa labadaba u baahan. The procurement task is to define each assembly’s electrical boundary and evidence—not to decide whether LV or MV is “better.”
Waa maxay Farqiga Dhaqan ee u dhexeeya LV iyo MV Switchgear?
Qalabka korantada-hooseeya waxay maamushaa wareegyada dhinaca korantada hoose ee nidaamka qaybinta. Shaqadeeda waxaa ka mid noqon kara dakhli-soo-geliyayaasha, qaybaha baska, quudiyaasha baxaya, kontoroolka mootada, cabbiraadda iyo ilaalinta. Qalabka danab dhexdhexaadka ah wuxuu ka shaqeeyaa utility ama dhinaca qaybinta-voltage-ka waxaana laga yaabaa inuu helo oo qaybiyo quudiyeyaal, beddelo beddelka ama qayb ka mid ah giraanta ama shabakad radial ah.
Eray-bixintu waa inay raacdaa sharciga iyo heerka mashruuca. Summada suuqgeyntu kuma filna. Jaantuska hal-line waa inuu caddeeyaa danab kasta bas iyo qalab, halka qeexida qalabku sheegayo heerka iyo qiimaynta lagu dabaqi karo.
Ku bilow jaantuska hal-line iyo booska beddelka
Soo hel barta utility, feederiyaha soo socda ee MV, qalabka beddelka ee MV, beddelka, kulanka weyn ee LV iyo culaysyada hoose. Haddii mashruucu helo koronto dhexdhexaad ah oo uu ku beddelo goobta, waxa uu badiyaa u baahan yahay beddelka/ilaalinta MV ka hor beddelka iyo qaybinta LV ka dib. Goob yar oo si toos ah loogu keenay danab yar ayaa laga yaabaa inay u baahato xirmada LV oo keliya.
Kaliya ha ka iibsan liiska rarka. SLD waa in ay muujisaa ilo caadi ah iyo kuwo kale duwan, lammaaneyaasha baska, qiimaynta beddelka, koronto-dhaliyaha ama xidhiidhada la cusboonaysiin karo, habaynta dhexdhexaadka ah iyo dhulka, dhibcaha cabbirka iyo xuduudaha go'doominta.
Waa kuwee isbeddellada ay tahay inay iibsadayaashu is barbar dhigaan?
| Go'aanku waa beddeli karaa | Dib u eegida Voltage-hoose | Dhexdhexaad-Voltage Review | Caddaynta iibsadaha |
| booska nidaamka | Transformer ka bacdi, culeyska u dhow | Kahor transformerka ama meesha MV node | SLD la ansixiyay |
| Voltage | LV bus and utilization voltage | Nidaamka MV magac ahaan iyo kan ugu sarreeya | Utility/xogta mashruuca |
| Waajibka qaladka | Mustaqbalka LV-gaaban ee hadda jira | MV-waqti gaaban iyo heerka ugu sarreeya ee u adkeysiga waajibaadka | Barashada khaladka ah |
| Ilaalinta | Iskuduwidda jabiyaha/ quudiyaha | Gudbinta, CT/VT iyo falsafada jebi/ beddelka | Daraasad ilaalinta |
| Habaynta baska | Soo-galayaasha, qaybaha, quudiyeyaasha, MCC | Radial, ring, bus section and transformer feeder | SLD iyo jadwalka quudiyaha |
| Cable interface | Cabbirka LV, booska gelitaanka iyo joojinta | Nooca fiilada MV, joojinta iyo gelitaanka tijaabada | Jadwalka fiilada/sawirrada |
| Deegaanka | Qolka, hawo-qaadista, IP-ga iyo gelitaanka | Indoor/outdoor, altitude, pollution and arc-risk controls | Site data |
| Heerka | Qaybta IEC 61439 ama xeerka mashruuca | Qaybta IEC 62271 ama xeerka mashruuca | Compliance schedule |
Waa maxay sababta Voltage iyo Heer Cilad u kala Go'aansan yihiin?
Danab magaceedu waxa uu tilmaamayaa fasalka nidaamka, laakiin ma qeexdo qiimaynta qalabka beddelka oo dhammaystiran. Iibsadayaashu waa inay sidoo kale bixiyaan soo noqnoqoshada, shuruudaha dahaarka, wakhtiga wareega gaaban ee mustaqbalka, mudada cillada iyo habaynta dhulka. Laba mashruuc oo isku dan ah oo isku mid ah ayaa u baahan kara qalab kala duwan sababtoo ah xoogga shabakada iyo waqtiyada ilaalinta-ilaalinta ayaa kala duwan.
Ha weyddiin alaab-qeybiye inuu ka soo saaro masuuliyadda khaladka ah ee kVA oo keliya. Xakamaynta fiilada, ilaha isbar-bar yaaca, is-beddelka is-beddelka iyo wax ku biirinta shabakadda kor ayaa laga yaabaa inay beddesho natiijada. Use a project fault study or clearly stated design basis.
Sidee bay u kala duwan yihiin Ilaalinta iyo Xakamaynta Falsafadaha?
Kuliyada LV waxay inta badan isku dubbaridaan daqliga iyo furayaasha wareegga wareegga, ilaalinta matoorka, cabbiraadda iyo xakamaynta. Nidaamyada MV inta badan waxay u baahan yihiin gudbinta ilaalinta, beddelayaasha hadda iyo korantada, isku-xidhka, wareegyada safarka, calaamadaha fogaanta iyo isku-dubbaridka ilaalinta tamarta ama beddelka.
Farqiga u dhexeeya kaliya maaha in MV uu leeyahay "ilaalin dheeraad ah." Nidaam kastaa wuxuu ilaaliyaa qalab kala duwan iyo aagagga cilladaha. Iibsaduhu waa inuu soo saaraa hawlaha ilaalinta, shuruudaha CT/VT, dhibcaha isgaarsiinta, korantada xakamaynta iyo macquulka safarka. Sawirada alaab-qeybiyeyaashu waa inay muujiyaan sida hawlahaas loo fuliyo.
Goorma ayuu Mashruucu u baahan yahay LV iyo MV Switchgear labadaba?
A factory, charging hub, commercial complex or microgrid receiving a medium-voltage supply and distributing low-voltage power usually needs an integrated chain: MV receiving/distribution, transformer and LV main distribution. Xirmooyinka waxaa laga yaabaa inay bixiyaan hal dhinac ama dhowr, laakiin is-dhexgalkooda waa in la qaboojiyo.
Dhexdhexaadiyeyaasha muhiimka ah waxaa ka mid ah fiilada beddelka ama isku xirka baska, isku-dubbaridka ilaalinta, lahaanshaha mitirka, awoodda kaalmaynta, calaamadaha xakamaynta, dhulka iyo mas'uuliyadda rakibidda. Iibsashada xirmo kasta si gaar ah iyada oo aan lahayn jadwal interface waxay abuuri kartaa daldaloolo xitaa marka wasiir kasta oo shakhsi ah uu u hoggaansamo.
Waa maxay Farqiga udhaxeeya Bedelka iyo Sabuuradaha?
Erayada waxaa mararka qaarkood si kala duwan u isticmaala gobollada iyo soosaarayaasha. Iibsadayaashu waa inay iska ilaaliyaan inay ku doortaan calaamad. Qeex dhismaha kulanka, kala soocida, nooca qalabka-ilaalinta, gelida, joogteynta, shuruudaha gudaha-xeereedka halka lagu dabaqi karo, qiimeynta baska, qiimeynta wareegga gaaban iyo heerka maamulka.
If a specification uses both words, request a terminology note and equipment schedule. Magaca ganacsigu waa inuusan waligiis burin waajibaadka korontada ee ku qoran SLD.
Heerarkee ayay tahay inay iibsadayaashu ku dhejiyaan RFQ?
Qalabka korantada yar yar iyo shirarka qalabka kontoroolka, iibsadayaashu waxay caadi ahaan qiimeeyaan qaybaha lagu dabaqi karo taxanaha IEC 61439. Qalabka birta ku xidhan ee dhexdhexaadka ah ayaa inta badan wax looga qabtaa iyada oo loo marayo shuruudaha IEC 62271 ee khuseeya. Qaybta saxda ah, daabacaadda, korsashada maxalliga ah iyo wax ka beddelka mashruuca waa in la sheegaa.
Ha u isticmaalin IEC 60439-1 tixraac hadda jira oo keliya sababtoo ah waxay ku muuqataa sharraxaadda alaabta hore; Waxaa lagu beddelay qaabka IEC 61439. Alaab-qeybiyuhu waa inuu soo celiyaa qodob ama jadwalka u hoggaansanaanta tilmaamaya weecsanaanta. Heerarka qaranka waxaa lagu dari karaa halka uu mashruucu uga baahan yahay, laakiin waa in aanay si aamusnaan ah u beddelin qeexitaanka xukunka iibsadaha.
Sidee ayay tahay in Iibsadayaashu u qiimeeyaan MNS Qalabka Bedelka Voltage-hoose?
The Qaybta qalabka korantada ee Dingsheng waxaa ka mid ah qaybinta LV, isteeshinka beddelka iyo agabka qaybinta hore loo sii diyaariyey. Mashruuca korantada yar, MNS-ku-xidhka qalabka beddelka ee-hooseeya Boggu wuxuu dhisaa qoys nooca khaanadaha modular ah oo loogu talagalay qaybinta korantada yar iyo waajibaadka xakamaynta mootada, oo leh qaabayn lagu xushay quudiyeyaasha mashruuca iyo qaybaha.
Boggu ma qeexayo ururinta mashruuca oo dhamaystiran. Iibsadayaashu waa inay wali bixiyaan danab, baska hadda, qiimaynta khaladka ah, jadwalka dakhli bixiyaha iyo quudiyaha, ilaalinta, cabbiraadda, qaabka kala soocida, gelitaanka fiilada, xidhitaanka, cabbirada iyo dukumentiyada. Tixraaceeda la daabacay ee nidaamyada ka hooseeya 4000 A waa soohdin qoys, ma aha xaqiijinta in golaha wasiirada ee la soo xigtay uu leeyahay 4000 A.
Sidee ayay tahay in Qalabka Voltage-dhexe dib loogu eego?
Bogga Dingsheng's XGW-12 wuxuu qeexayaa booska bannaanka-nooca sanduuqa qoyska ee loo isticmaalo helitaanka iyo qaybinta awoodda korantada dhexdhexaadka ah, oo ay ku jiraan codsiyada isku-xidhka giraanta iyo beddelaadaha-quudiyayaasha. Tani waxay taageertaa fahamka dhinaca MV.
Soo jeedinta MV ee dhabta ah, xaqiiji danab la qiimeeyay, heerka dahaarka, wakhtiga caadiga ah, adkaysiga wakhtiga gaaban, qalabka beddelka, gudbinta ilaalinta, CT/VT, shuruuda gudaha-arc, isgoysyada, beddelka dhulka, joojinta fiilada, sahayda caawimada, xidhitaanka iyo caddaynta tijaabada. Waligaa ha u wareejin qiimeyn hal qoys MV mid kale.
What Evidence Should Support Technical Approval?
Codso SLD la ansixiyay, habayn guud, jadwalka quudiyaha, qiimaynta baska iyo qalabka, liiska qaybaha, jaantusyada fiilooyinka, ilaalinta iyo jadwalka cabbiraadda, faahfaahinta gelitaanka fiilada, habaynta dhulka iyo jaantuska u hoggaansanaanta. Iibsaduhu waa inuu xaqiijiyaa in dukumeentiyadu ay tixraacayaan isla dib u eegis iyo safka qalabka.
Qeex xaqiijinta naqshadeynta, xaqiijinta joogtada ah, baruurta iyo imtixaanada goobta iyadoo loo eegayo qeexitaanka maamulka. Shahaadada ama buug-yaraha ma beddelaan sawiro gaar ah oo dalbashada. Weecadu waa inay furnaataa ilaa uu ka aqbalo injineerka masuulka ah.
Waa maxay khaladaadka xulashada guud ee abuura khatarta?
- Ku dooranaya magaca danab kaliya: fault duty and protection remain undefined.
- Iyaga oo iska indha tiraya booska beddelka: Xuduudaha xirmada MV iyo LV ma cadda.
- Isticmaalka "switchboard" iyo "switchgear" si is beddel ah: dhismaha iyo filashada imtixaanku way kala duwan yihiin.
- Xigasho SLD aan dhammayn: feeder count and ratings change after engineering begins.
- Isticmaalka tixraaca caadiga ah ee duugoobay ama aan dhamaystirnayn: alaab-qeybiyeyaashu waxay qiimeeyaan baaxadda xaqiijinta ee kala duwan.
- Isbarbardhigga qiimayaasha golaha wasiirada: qaybaha, ilaalinta, mitirka iyo dukumentiyada aan caadi ahayn.
What Should an LV/MV Switchgear RFQ Include?
- SLD iyo falsafada hawlgalka nidaamka
- Danta magaca ah/ugu saraysa iyo inta jeer
- Isha iyo xogta beddelka
- Qiimaynta baska iyo quudiyaha
- Heerka qaladka iyo muddada
- Earthing system
- Ilaalinta, cabbiraadda iyo isgaarsiinta
- Jadwalka soo-gale, lammaane iyo quudiyaha
- Dookhyada qaybaha
- Gelida fiilada iyo joojinta
- Bey'adda gudaha/dibadda
- Xiritaanka, kala-soocidda iyo shuruudaha arc
- Heerarka iyo daabacadaha lagu dabaqi karo
- Sawirada, xaqiijinta iyo baruurta
- Soohdinta Rakibaadda/gudbinta
- Tirada, goobta iyo jadwalka
U soo gudbi dukumentiyada mashruuca iyada oo loo marayo Foomka codsiga mashruuca qalabka beddelka ee Dingsheng waxayna u baahan tahay Xaqiijin, leexasho, Beddelka ama wax-soo-gelinta iibiyaha ayaa looga baahan yahay goob kasta oo agab ah.
Su'aalaha Inta Badan La Isweydiiyo
Qalab-bedelashada-dhexe-dhexe had iyo jeer ma kor buu u socdaa qalabka beddelka ee LV?
Habka caadiga ah ee goobta hoos-u-dhaca ah, haa, laakiin mashruuca SLD iyo xidhiidhka utility ayaa qeexaya habaynta dhabta ah.
Golaha wasiirada MNS ma beddeli karaa qalabka beddelka ee danab dhexdhexaadka ah?
Maya. MNS waa qoys isku xidha korantada yar mana bedeli karo qalabka looga baahan yahay barta shabakad danab dhexdhexaad ah.
Hadda baska sare ma ka dhigayaa beddelka LV mid ku habboon MV?
Maya. Qiimaynta hadda iyo heerka danabku waa kala duwan yihiin. Dahaarka, beddelidda, ilaalinta iyo shuruudaha imtixaanku way kala duwan yihiin.
What should buyers freeze first?
Jooji SLD, danab, xogta isha/badaliyaha, heerka khaladka, dhul-dhigista, falsafada ilaalinta iyo jadwalka quudiyaha kahor injineernimada qalabka kama dambaysta ah.
