Shin kuna buƙatar kariya daga girgiza?
Har yanzu ina tuna warin robar da ta ƙone lokacin da injin inverter na abokin ciniki ya soya a shekarar 2019. Wannan ƙarin kuɗin ya kashe masa dala 28,000 da kuma makonni shida na hutu.
Eh, kuna buƙatar mai kare ƙaruwa.Sau ɗaya walƙiya ko matsalar grid zai iya aika dubban volts zuwa kebul ɗinka. SPD yana cin wannan ƙarar kafin ya isa ga inverter ɗinka, mita, ko batirinka. Na ga yana adana rufin hasken rana gaba ɗaya.
Har yanzu ba ka da tabbas? Ci gaba da karatu. Zan yi maka bayani game da ainihin lalacewar, lambobi na gaske, da kuma ainihin bayanan da muke amfani da su lokacin da muke jigilar kaya zuwa Berlin ko Milan.
Me Ke Faruwa Ba Tare da Kariyar Surge ba?
Na buɗe murfin ƙarfe, PCB ɗin ya yi kama da burodin baƙi. Abokin ciniki ya yi tunanin inshora zai biya. Bai biya ba.
Ba tare da SPD ba, ƙarfin lantarki fiye da kima yana hawa kai tsaye cikin inverter ɗinka.Na'urar DC link capacitor ta fashe, IGBTs ta gajarta, kuma dukkan igiyar ta tsaya. Ɗaya daga cikin ƙarar V 1 500 zai iya share na'urar canza wutar lantarki ta kasuwanci ta USD 50 000 cikin daƙiƙa 0.2.
Rarraba Farashi na Gaske
| Wurin Lalacewa | Farashin da Aka Saba (USD) | Lokacin Jagora | Kuɗin da aka ɓoye |
| Injin juyawa 100 kW | 28,000 | Makonni 8–12 | Rashin Daidaito |
| Batirin 20 kWh | 14,000 | Makonni 6 | Sake shigarwa |
| Asarar samarwa | 4,200 / mako | – | Dokokin hukunci |
Me yasa Mai Bugawa Bai Yi Tafiya ba
Masu fashewa suna mayar da martani ne kawai ga yawan wutar lantarki, ba yawan wutar lantarki ba. Ƙarfin wutar lantarki zai iya zama 2000 V amma 3 A kawai, don haka mai fashewa yana murmushi kuma yana ci gaba da kasancewa a rufe. Shi ya sa kuke buƙatar na'urar da ke duba ƙarfin lantarki, ba wutar lantarki ba. SPD yana yin hakan daidai: yana rage ƙarin volts zuwa ƙasa sannan ya sake saitawa.
Tatsuniyoyi Uku Da Nake Ji Duk Mako
- "An yi amfani da na'urorina wajen yin katangar."
Gina ƙasa yana rage ƙarfin taɓawa, amma ba ya ɗaure wani ƙarfi.
- "Ba ma taɓa samun walƙiya a nan ba."
Sauya grid, bankunan capacitor, har ma da injinan lif suna yin ƙararrawa kowace rana.
- "Inverter yana da kariya a ciki."
Yawancin MOVs na masana'anta suna da girman 40 J. Harbin kai tsaye yana ɗauke da 50,000 J. Lissafi abin baƙin ciki ne.
Shari'a daga Hamburg, Maris 2023
Rufin rufin mai karfin MW 2 ba shi da SPD na waje. Yajin aiki mai nisa ya haifar da wutar lantarki mai karfin V 1 200 a kan igiyar DC. Injin inverter ya mutu, amma mafi muni, arc ya fashe rufin polymer. Ruwa ya shiga, kuma kamfanin inshora ya zargi "rashin kulawa." Biyan kuɗi: sifili. Daga baya abokin ciniki ya sayi 120 daga cikin 1 000 V DC SPDs ɗinmu don sake ginawa.
Matsalar Zafi da Ɓoye
Injiniyoyin da yawa suna mantawa cewa SPD yana cikin ƙaramin akwatin IP65 duk rana. Rana tana dafa ƙarfen zuwa 70 °C. A ciki, faifai na MOV yana aiki mafi zafi. Faifan diski masu arha suna fara zubar da wutar lantarki a 85 °C. Da zarar ɓullar ta fara, zafi yana ƙaruwa, wutar lantarki tana ƙaruwa, kuma faifai yana fashewa. Masana'antarmu tana ƙara hanyar haɗin zafi wanda ke jan SPD ba tare da layi ba a 120 °C. Na'urar ta lalace lafiya, ba ta da gajeru ba, kuma shafin yanar gizonku yana ci gaba da aiki.
Asarar Sigina vs. Hadarin Gobara
Wasu masu siye suna kallon matakin kariyar wutar lantarki ne kawai. Ina kuma duba tsaron wuta. A shekarar 2021 wani rumbun ajiya a Netherlands ya ƙone saboda wani SPD da ba a san sunansa ba ya kama da wuta bayan da MOV ta gaza. Kamfanin inshora ya ƙi biyan kuɗi saboda SPD ba shi da jerin UL 1449 na 4th Edita. Muna gwada kowane rukuni zuwa IEC da UL don ku iya barci da dare.
Yadda Ake Zaɓar Mai Kariyar Juyawa Mai Dacewa Don Ayyukan Rana
A bara wani mai siye ya aiko min da RFQ mai shafuka 20. Layi na farko ya ce: "Mafi arha SPD, guda 1000." Na goge imel ɗin.
Haɗa SPD da ƙarfin lantarki na tsarin ku, wutar lantarki ta gajeriyar hanya, da matakin haɗari.Fara da IEC 61643-31. Zaɓi Uc 20% sama da ƙarfin wutar lantarki na buɗewa. Sannan duba Imax: 40 kA don rufin gida, 100 kA don sikelin amfani. Kullum ina ƙara lamba ta nesa don ƙungiyar SCADA ta ga tafiyar.
Teburin Zaɓin Sauri
| Nau'in Tsarin | Uc (VDC) | Imax(kA) | Aji | Siginar Nesa |
| Rufin 600 V | 720 | 40 | II | Ee |
| 1000 V igiya | 1 200 | 60 | II+III | Ee |
| Mai amfani da wutar lantarki 1 500 V | 1 800 | 100 | I+II | Ee |
Hanyar Mataki-mataki
- Rubuta Voc a ranar da ta fi sanyi.
Sanyi yana ƙara ƙarfin lantarki har zuwa kashi 15%.
- Ƙara kashi 20% na riba mai kyau.
Wannan yana ba ku Uc.
- Ƙidaya tsawon mai sarrafa ƙasa.
Idan tsawonsa ya wuce mita 10, ƙara SPD na biyu a gefen inverter.
- Duba fis ɗin.
Dole ne SPD ɗin ya kasance yana da fis ɗin da ke sharewa kafin kebul ɗin ya narke. Muna amfani da gPV 15 A don 4 mm².
- Rahoton gwajin buƙata.
Nemi IEC 61643-11 da UL 1449 4th Edita a cikin PDF ɗaya. Babu rahoto, babu yarjejeniya.
Cikakkun Bayanai: Gudun Zafi
Tubalan MOV masu araha suna fara zubewa a digiri 85 na Celsius. A cikin akwatin IP65 baƙi a kan rufin Sipaniya, hakan yana faruwa a kowace bazara. Tubalan mu suna amfani da haɗin zafi wanda ke katsewa a digiri 120 na Celsius. SPD ɗin ya gaza lafiya, ba gajere ba.
Kuskuren Tsawon Gilashi
Ina ganin masu shigarwa suna amfani da na'urorin tashi mai tsawon santimita 30 saboda yana da sauri. Wannan yana ƙara V 300 ga ƙarfin lantarki na barin wutar lantarki. Dokarmu: kiyaye na'urorin gaba ɗaya
Daidaitawa tare da AC Side
Kar a manta da gefen AC. Bayan inverter ya juya zuwa 400 V AC, har yanzu kuna buƙatar SPD. Muna sanya na'urorin AC na Class II 275 V a babban allo. Ga wuraren da ke da transformers, muna ƙara Class I 25 kA 10/350 µs a gefen LV. Har yanzu ana iya yin amfani da maki ɗaya a layin MV.
Me yasa Manyan EPCs ke Amfani da Tsarin SPD Masu Haɗaka
Na ziyarci wani kamfanin EPC mai matsayi 10 mafi girma a Milan. Injiniyan su ya juya SPD ya ce: "Ba na son a saka min miyar MOV a cikin injina."
SPDs masu haɗaka sun haɗu da bututun iskar gas mai sauri tare da ƙarfi MOVBututun iskar gas yana ɗaukar kashi 90% na farko na yajin aiki, don haka MOV ɗin ya kasance cikin sanyi. Sakamako: tsawon rai ya ninka sau uku, ƙarfin lantarki na barin wutar lantarki ya ragu da kashi 30%. Shi ya sa yanzu EPCs na Tier-1 suna rubuta "hybrid kawai" a cikin BoQ ɗinsu.
A Cikin Akwatin Haɗin Kai
| Matakin mataki | Sinadarin | Aiki | Rayuwa (yajin aiki) |
| 1 | na'urar riƙe iskar gas |
| 200 |
| 2 | MOV | Sauran maƙallan | 150 |
| 3 | Fis ɗin zafi | Tsaron wuta | Tafiya 1 |
Dalilin da Yasa Yake da Muhimmanci ga O&M
Kowace motar ɗaukar kaya tana kashe dala 1,200. Idan SPD ta ɗauki shekaru 15 maimakon shekaru 5, za ku adana biredi uku. A kan fayil ɗin 100 MW wanda shine dala 360,000. Ƙarin dala 12 da kuke biya don haɗakar motoci shine hayaniya.
Takamaiman da Na Gani a cikin RFQs na 2024
- Fitar da aka ƙayyade A cikin: 20 kA
- Matsakaicin fitarwa Imax: 100 kA
- Matsayin kariyar wutar lantarki Sama:
- Lambobin sadarwa daga nesa: busasshe 250 V 1 A
- Zafin Aiki: -40 °C zuwa +85 °C
- Takaddun shaida: IEC, UL, TÜV, CE, RoHS
Idan masana'antar ku ba za ta iya yin alama a kowane akwati ba, to kun fita.
Bututun Gas da Tsarin Tsufa na MOV
Mun yi gwajin 20 kA 8/20 µs sau 200. Na'urar MOV mai tsabta ta ga ƙaruwar sama da kashi 38% bayan harbi 100. Na'urar haɗin gwiwa ta tashi da kashi 9% kawai. Wannan delta yana nufin inverter yana ganin ƙarancin damuwa na 400 V. Fiye da shekaru 20, wannan shine bambanci tsakanin rayuwar inverter na shekaru 12 da musanya na shekaru 6.
Shawarar Nauyi
SPD mai ƙarfin 40 kA yana da nauyin kilogiram 0.8 saboda bututun iskar gas yana ƙara jan ƙarfe da yumbu. Naúrar 40 kA MOV kawai tana da nauyin kilogiram 0.4. Idan samfurin ya ji sauƙi, buɗe shi. Kuna iya samun rabin faifan MOV ɗin sun ɓace.
Daga Masana'anta Zuwa Fili: Me Yake Sa Mai Kayatar da SPD?
Na taɓa yin bincike a wani taron bita da ke manne MOVs da epoxy. A shekara mai zuwa tubalan sun faɗi yayin jigilar kaya. Mun rasa na'urori 800 a teku.
Mai samar da SPD mai aminci yana da cikakken sarkar: shagon ƙarfe, na'urar buga faifan MOV, walda TIG, ƙonewa, da gwajin 100%.Nemi takardar QC. Dole ne ya nuna In da Imax ga kowane na'ura, ba samfurin rukuni ba. Masana'antar da nake da ita a Wenzhou tana adana waɗannan bayanan har tsawon shekaru 10.
Jerin Abubuwan da Na Bawa Masu Sayen Jeff-Style
| Abu | Abin da Nake Nunawa | Tutar Ja |
| Girman masana'anta | 2000 m², ISO 9001 |
|
| Dakin gwaji | 8/20 µs, 10/350 µs | Sai kawai 8/20 |
| Bin diddigin abubuwa | Lambar Serial + QR | Sitika kawai |
| Garanti | Shekaru 5 cike | shekara 1 na aikin koyarwa |
| Hannun Jari | Kwamfutoci 10 k a shirye | MOQ 500, kwanaki 60 |
Gefen Kayan Aiki
Muna gudanar da haja mai bonded a Hamburg. Akwatin ku zai iya barin Wenzhou yau kuma ya share kwastam a Bremerhaven gobe. Babu VAT har sai kun cire kayan. Wannan zai rage lokacin kuɗin ku da kwanaki 21.
Biyan Kuɗi Da Ya Yi Maka Aiki
Muna rage kashi 30%, kashi 70% idan aka kwatanta da kwafin BL. Idan kiredit ɗinku ya kai sama da dala 500,000 a kowace shekara, za mu ƙara kwanaki 90 na OA ta hanyar Sinosure. Za ku sami abin da kuke buƙata, ni ne zan ba ku odar.
Nasiha kan Duba Kuɗi
Idan ka ziyarci masana'anta, ka nemi ganin binciken MOV da ke shigowa. Ya kamata su gwada kashi 100% na faifan diski don ganin ƙarfin lantarki a 1 mA. Idan sun gwada kashi 5% kawai, ka tafi. Mun ƙi kashi 3% na kowane yanki; shi ya sa adadin dawowarmu na shekaru biyar shine kashi 0.2%.
Kayan Bayan Siyarwa
Kowanne akwati yana ɗauke da lambar QR. Duba shi kuma za ku ga rahoton gwaji, zane-zanen wayoyi, da bidiyon shigarwa na daƙiƙa 45. Ƙungiyarmu kuma tana raba fayil ɗin DXF don haƙa layin dogo na DIN. Ƙananan bayanai suna ceton ku awa ɗaya a wurin.
Tsarin Kayayyakin Sayayya
Muna ajiye kashi 2% na kowace jigilar kaya a matsayin kayan gyara kyauta a Hamburg. Idan na'urar guda ɗaya ta yi hatsari, muna aika wani abu da zai maye gurbinsa cikin awanni 48. Ba za ku jira akwati na gaba ba.
Kammalawa
SPD na dala 30 zai iya adana injin canza wutar lantarki na dala 50,000. Zaɓi ajin da ya dace, nemi ƙwararrun masana'antu, sannan ka duba masana'antar. Aika min da imel a yau, zan aika samfura gobe.