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
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