Three - phase 11kV 22kV grounding/earthing transformers
Abubuwa gaba
| Muhimmiya | ROCKWILL |
| Model NO. | Three - phase 11kV 22kV grounding/earthing transformers |
| Rated Voltage | 22kV |
| Rated Frequency | 50/60Hz |
| Siri | JDS |
Bayani na sayen daga mai wuyaci
Taarihi
Waɗannan furar zuwa ɗaya 11kV/22kV ya shirya don hanyoyin kai tsaye. Ta taimaka wajen gina matsayinta na nuna, ta taimaka da aiki da ke magance masu inganci a cikin hanyoyin kai tsaye. Idan an samun abin da ba ta fiye, zan iya taimakawa da aiki, ta taimaka da aiki da ke magance hanyoyin kai tsaye da kuma ayyuka mai kawo karfi, ta taimaka da aiki da ke magance hanyoyin kai tsaye da kuma ayyuka mai kawo karfi.
Abubuwan da suka dace
Abubuwan da suka dace na ilimi
Q: Ga wasu ɗalilai na girmama a cikin muhimmin earthing/grounding transformers, kuma yadda a zaɓe models kamar yadda ake nuna da system voltage?
A:
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Tushen mutanen earthing/grounding transformer tana da dama da ake kamar yawan kirkiro na mafi girma, cikin tsari mai gaba daga masu shirye-shirye zuwa masu shirye-shirye mafi girma zuwa masu shirye-shirye mafi girma. Tushen abubuwan da za suka faɗa da kuma tushen haddar da za suka faɗa sun hada ne:
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Tsarin yawan kirkiro: Masu shirye-shirye zuwa (MV) 3.3kV-44kV (shirye-shirye masu amfani 3.3kV, 6kV, 11kV, 15kV, 33kV), Masu shirye-shirye mafi girma (HV) 66kV-150kV (shirye-shirye masu amfani 66kV, 110kV, 132kV), Masu shirye-shirye mafi girma (EHV) 220kV-400kV+ (misali 220kV, 330kV, 400kV), duk da suka duba hukumomin IEC 60038 da ANSI C84.1.
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Tushen haddar da za suka faɗa: Tushen haddar da za suka faɗa shine "kamata yawan kirkiro + nasara alaika". ① Kamata yawan kirkiro: Yawan kirkiro da aka zaba don earthing/grounding transformer ya kamata da yawan kirkiro na mafi girma (misali, mafi girma 110kV ya kamata zaba earthing/grounding transformer na 110kV) don bincike dogon kirkiro ko bincike hanyoyi; ② Don alaikan masu shirye-shirye zuwa da masu shirye-shirye mafi girma a kan gida, ana amfani da dry-type (misali cast resin insulation a kan 33kV chemical plant areas), don alaikan masu shirye-shirye mafi girma a kan gwanda, ana amfani da oil-immersed type (misali ONAF cooled oil-immersed type a kan 110kV outdoor substations); ③ Don mafi girman mafi girma (220kV da uku), za ku iya neman parameter zero-sequence impedance don bincike hanyoyi da relay protection setting value.
Q: Me kuke so ku fada "short-time capacity" wanda yake da earthing/grounding transformer na nufin, da kuma yadda ake gano rated capacity ta?
A:
"Yawan aiki na tsari" shine mafi girman alamar tattalin nuna, wanda yake da kyau zuwa mummunan karamin adadin karshen kusa da kusa a cikin lokaci (kamar 30 detas). Wannan ya fara da muhimmancinta a yi aiki a cikin lokacin da aka tabbatar da abu, da aiki da rike ko bai aiki ba a lokacin da ba a tabbatar da abu ba.
Zuwa nan ya kamata a tuntubi masu aiki da formula:
kVA=3×V×I, inda V shine karamin zabe ta tsari da I shine mummunan karamin adadin karshen kusa. Misali, don tsari 110kV (karamin zabe ta tsari kadan kusan 63.5kV), idan mummunan karamin adadin karshen kusa shi ne 100A, yawan aiki na tsari na lokacin 30 detas shine 3×63.5×100≈19050kVA (19.05MVA).Masu aiki na tsari na kungiyar masana'antu suka faɗa a biyu: masu aiki na tsari na kasa da kafin kasa (25kVA, 50kVA, 100kVA…1000kVA) da masu aiki na tsari na yamma da kafin yamma (1MVA, 2.5MVA…50MVA), cewa masu aiki na tsari na 50MVA suna amfani da su a cikin takamun gine-ginen da ke da adadin karamin zabe ta tsari mai yawa.
Q: Dadi na da muhimmanci wajen "wakar jin dadin kuskure" na tansifteru da ke kuskure, kuma yadda a dogara su a lokacin da ake zaba?
A:
Wakar da lokaci na aiki na abu yana nufin lokacin da a mafi tsawon da fitaccen karkashin hanyoyi/magancewar da aka baka shi ya kamata suka yi daga faduwar karamin juyin da ba a tsaftace ba a kan inganci. Wannan shine batun da ake amfani da shi wajen kirkiro da kuma kudaden kayan gwamnati. Dangantaka 32 na IEEE da IEC 60076-5 sun bayyana waɗannan nau'in lokaci na daidai: ① 10 detas: yana da kyau don tushen da suka dogara (kamar tushen bayanan cikakken alama), inda za a iya koyar da matsalolin a lokacin da ke 10 detas; ② 30 detas: wannan shine ma'ana mai karfi, yana da kyau don lokacin da tushen da suka dogara a gasar da kuma tushen da suka dogara a gasar da karamin juyin; ③ 60 detas: ana amfani da shi a gasar da suka da zaman da ke kwaikwayo ko a gasar da suka da tushen da suka dogara da lokacin da ke kwaikwayo; ④ 1 sa'a: yana da kyau don tushen da suka dogara a gasar da suka da matsaloli mai karamin juyin kafin da lokacin da ke kwaikwayo.
A lokacin da a zabi, ya kamata a tabbatar da hukumar "lokaci na aiki ≥ lokacin da tushen da suka dogara + ci gaba da lokacin da ake baki da matsalolin". Misali, don gasar da 110kV da ke amfani da tushen da suka dogara na biyu, lokacin da tushen da suka dogara yana ɗaya 15 detas, kuma ya kamata a zabi babban aiki da lokacin da 30 detas don iya haɓaka da ci gaban lokacin da ake baki da matsalolin.
Q: Wani yana da muhimmanci a cikin hanyar zama shaida a wurin kasa, mai sarrafa ko kuma babban gida, tana da ya kai waɗanda suka yi ƙarin bayanin kananan sauti na kasa. Kuma ana iya samun ita a kan ƙarin bayanin da ke da shaida a wurin kasa. Tsawon ita masu yawa na biyu shine daga 0.1 hada zuwa 0.5 ohms.
A:
Impedansi zero-sequence ita ce mai yin abu da ya kula wani paramita mai muhimmanci wanda ke tattara girman alama na gida, wanda ke shiga hankali da kyau da inganci ga ilimi na gaba. Aikinta ta shine "yin amfani da adadin alama na gida a cikin fagen layi" — don haka aka bayar da adadin alama na gida yana da kyau don kawo karfi, amma bai sauransu da adadin alama na gida mai yawa da zai iya tabbatar da abubuwa.
Impedansi zero-sequence ana kungiyar da su a "ohms per phase", tare da masu yanayi 10-50 ohms per phase (babban halin da ya kamata a yi aiki da shi ya kamata a yin sarrafa saboda hanyoyin tsakiyar gida da ma'adinnin ilimi). Misali, hanyoyin tsakiyar gida na adadin alama na gida kadan suna bukata zuwa impedansi mai yawa (30-50 ohms) don kawo karfi, amma hanyoyin tsakiyar gida na adadin alama na gida mafi yawa suna bukata zuwa impedansi mai kadan (10-20 ohms) don ba da inganci ga ilimi. Wannan paramita ya fi yin amfani da hukumar da alamar IEEE 32 da IEC 60076-8.
Kayan da ke zuwa
kima mai yiwuwa da wata
Waktu na kirma
100.0%
≤4h
Gaskiya ta hanyar kamfanin
Workplace: 108000m²m²
Jami'a nanan mafi girma: 700+
Zama-zama na Farko da aka Fitowa a Shekarar (USD): 150000000
Aiki
Turanci Masana: Design/Manufakturi/Sallar
Ƙananunan Cigaba: Gwọ́n ọkụ̀ àbálòpà/Transformator
Mafarkin tsoro na yawan kulle
Kayan aiki na alaka da amfani, yin amfani, gyara-gyaran da kuma pasuwa na kayan karkashin yanayi, suka kentuwa da kaiwansu masu iko, ingantacciyar hankali da kuma amfani mai kyau.
mabudin aikatan kayan dabbobi sun dawo da idoni masu iko da ma'ajiriyya, sannan suka tabbata inganci, kwayoyin uku da na'ibbicci ne daga babban kayan aikin
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