11kV Three-Phase Oil-Immersed Grounding Transformer Gadon Transformer da 11kV na Tsohuwar Tsakiyar Rijisita
Abubuwa gaba
| Muhimmiya | Rockwell |
| Model NO. | 11kV Three-Phase Oil-Immersed Grounding Transformer Gadon Transformer da 11kV na Tsohuwar Tsakiyar Rijisita |
| Rated Frequency | 50/60Hz |
| Kpọmkwem kwamnyereke | 500kVA |
| Siri | JDS |
Bayani na sayen daga mai wuyaci
Deskripsioni
Transforma earthing tana gini da suka klasifikar da suka zama reactors na bi. Transforma earthing (neutral coupler) shine transforma uku mai sarrafa don ta haɗa da system din kula wanda yake iya bayar da neutral connection don earthing, bai haka ko kuma via impedance. Amma, transforma earthing suna iya bayar da local auxiliary load ba.
A lokacin fault uku, reactor yana ƙasa fault current a neutral, kuma yana cikin jirgin kula. Daga kimanin IEC 60076-6, neutral-earthing reactor ana haɗa da neutral na system din kula zuwa earth don ƙasa line to earth current under system earth fault conditions zuwa value da aka tabbatar.
Transforma earthing yana gina neutral point wanda ke system. ZN connection ana amfani da ita. Z connection yana bayar da linear da specified zero sequence impedance. YN + d kuma ina iya amfani da ita.
Abubuwa
Functional Uniqueness:
Constructing an Artificial Neutral Point: Bayar da reliable neutral point connection don systems da suka da ungrounded ko high-impedance grounded neutrals (kamar IT systems da resonant grounded systems).
Grounding Path Management: Neutral point yana iya haɗa da ground directly ko kuma via a reactor/resistor, precisely limiting single-phase ground fault current (in line with IEC 60076-6).
Fault Current Control:
Suppressing Fault Current: Limits the ground fault current zuwa safe valuev by connecting a neutral reactor in series, preventing equipment damage.
Accelerating System Recovery: Reducing the magnitude of the fault current helps the arc self-extinguish, shortens power outage duration, and improves power supply continuity.
Winding Connection Methods:
ZN Type (Zigzag Connection): A mainstream design that provides linear zero-sequence impedance, with strong magnetic circuit balance and anti-saturation capability.
YN+d (Star + Delta): The secondary delta winding can supply auxiliary loads (doubling as a station service transformer function).
Controllable Zero-Sequence Impedance: Impedance values can be customized to ensure precise matching with the system protection strategy.Safety and Standard Compliance:
Following IEC 60076-6: Regulates the temperature rise, insulation, and short-circuit withstand capability of neutral reactors.
Overvoltage Suppression: Limits transient overvoltages caused by ground faults, protecting equipment insulation.
Main Technical Parameters
Q: Wadannan suna da ya fi yin cewa haka a lokacin da karamin tashin hada na gida na mutanen jirgin samar da take sauya daidai?
A:
Zaman lafiya na iya zama aiki mai zurfi wajen bayar da shawarar zuwa a cikin hanyoyin kula/ƙarfin ƙarƙashin. Sabbin da suka haifar da wannan suna duka biyu, kuma bayanin abin da ya ba da shi ya kamata ta taimaka da "system first, then equipment": ① Sabbin da ke tsakiyar system: Mafi yawan da ake iya tabbatar da shi shine abu mai sauƙi da take faruwa a cikin hanyoyin kula (kamar hanyoyin zuba, kable da suka ƙare da kula), a lokacin da take faruwa, za a samun amfani da adadin zero-sequence current tare da babban fuskantar sashi; kafin kuma hanyoyin mafi yawa da kuma zero-sequence current da ake gina saboda amfani da kabilu masu kayayyakin (kamar frequency converters, electric arc furnaces). ② Sabbin da ke tsakiyar ƙarƙashin: Kasa mai sauƙi da take faruwa a cikin zigzag windings (kamar hanyoyin kula da suka ƙare da kula), abu mai sauƙi da take faruwa a cikin ƙarƙashin iron core, ko kuma kasa mai sauƙi da take faruwa a cikin hanyoyin kula mai sauki.
Q: Ko kowane da ake shafi matsaloli na biyu a lokacin da yawan zuba ta karamin jirgin karkashin kusurwa/kaɗarwa ta yi nasara?
A:
Har zuwa masu aiki na gaba tana da muhimmanci a yi da yin "system kafin, sannan samani", wanda zai ƙunshi hanyoyi kamar haka: Hanyar 1, kula ci gaba ce akwai single-phase grounding ta hanyar voltage monitoring (voltage rise of non-fault phase, voltage drop of fault phase); Hanyar 2, duba kwallon adadin da ke faru a baya da kuma tarihin yin aiki na nonlinear loads don in kare kan dalilin kwallon adadin da ba suka fi shi ko harmonics; Hanyar 3, fuskantar mafi girma da earthing/grounding transformer da system, ka kawo zero-sequence impedance ta kanta, kuma idan farkon da aka tabbatar da shi daga factory value ya kai ±15%, zai buƙata cewa an buƙaci mai girma da iron core.
Kayan da ke zuwa
kima mai yiwuwa da wata
Waktu na kirma
100.0%
≤4h
Gaskiya ta hanyar kamfanin
Workplace: 60000m²
Jami'a nanan mafi girma:
Zama-zama na Farko da aka Fitowa a Shekarar (USD): 100000000
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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