750kV Single-phase Oil-Immersed Autotransformer with Three Windings and No Excitation 译为宿务亚诺语: 750kV Single-phase Oil-Immersed Autotransformer nga may Tulo ka Windings ug Wala'y Excitation

Pagdeskrip siyahan sa Produkto：

Ang 750kV Single-phase Oil-Immersed Autotransformer nga may Tres Windings ug Wala'y Excitation mao ang importante nga komponente nga gihimo alang sa pinaka taas nga yugto sa mga sistema sa pagpadala og kuryente. Ang robust nga teknolohiya sa oil-immersed cooling nia nagpahibalo og stable nga thermal performance ug long-term reliability sukad sa heavy loads. Ang unique nga tres-winding configuration naghatag og exceptional nga operational flexibility, nagpadayon sa efficient nga power transfer ug system interconnection. Isip usa ka "wala'y excitation" design, ipasabot kini nga mas superior nga reliability ug simplified maintenance tungod kay wala na ang pangangailangan sa on-load tap-changing mechanisms, gihatagan kini og ideal ug dependable nga solusyon alang sa ultra-high voltage (UHV) grid applications nga nagpangita og unwavering performance.

Mga Katangian sa Produkto:

• Optimized Structural Design: Nagamit ang advanced nga computational analysis sa electrical, magnetic, mechanical, ug thermal behavior aron masiguro ang robust ug reliable nga construction.

• Superior Electrical Performance: Complies sa IEC standards tungod kay naghatag og customized solutions, ang partial discharge levels mas laba pa kaysa sa IEC 60076-3 limits.

• Enhanced Operational Reliability: Multi-physics field analysis optimizes insulation, amp-turns balance, ug cooling, delivering strong resilience sa overvoltage ug short-circuit events tungod kay wala na ang risks sa local overheating.

• Premium Component Selection: Naghatag og exceptional nga user experience sa clean nga appearance, leak-free construction, ug maintenance-free operation—wala na ang pangangailangan sa core disassembly.

Technical Parameters

Sa among mga autotransformers, kasinatian niini ang non-standard nga voltage levels sama sa 121kV, 132kV, 138kV, 200kV, 225kV, 230kV, 245kV, 275kV, 330kV, 345kV, 400kV ug 756kV,  Naghatag mi usab og customization services.

Pahibalo: Ang mga transformer nga may daghang espesyal nga mga parametro ug performance mahimo nga magbutang basehan sa mga pangutana sa customer.

Normal nga mga Kondisyon sa Serbisyo

(1) Altitude:  ≤1000m;

(2) Ambient temperature:Maximum temperature: +40℃;Maximum monthly average temperature: +30℃;Maximum yearly average temperature: +20℃;Minimum temperature: -25℃.

(3) Power supply: approximate sinusoidal wave, three-phase symmetrical approximately

(4) Installation site: indoor or outdoor, without the obvious contamination.Note: The transformer used in special conditions should be specified when ordered.

Pakilala sa Structure ug Performance:

Core:

• Adopting highest quality, non-aging, cold-rolled, grain-oriented, and high permeability silicon steel lamination silicon steel sheets.

• Processed on the GEORG length-cutting line from Germany.

• Fully mitred joint, step lapping and polyester tape binding structure making the transformer with low no-load losses and low noise level.

• Placing vibration isolation pads between the body and the tank to reduce vibration that transmits to the tank.

Winding:

• Winded by high-quality oxygen free copper with lower resistivity.

• Processed and manufactured on horizontal winding machines and large CNC vertical winding machines from both radial and axial directions.

• Reasonable transposition applied between paralleling wires, magnetic shielding used for guiding flux leakage when necessary to reduce the stray losses of the transformer.

• Reasonable design of insulation structure improving the ability of withstanding overvoltage.

• Optimizing the ampere turns distribution of the winding, increasing the radial support and axial compression of the winding, using the pre-densification of spacers, constant pressure drying, to resist the impulse current.

Tank:

• Bell type or cover bolted type tank.

• Carbon dioxide shielded welding process.

• High-quality gaskets and the limit groove.

• Strict leak detection test procedures.

Others:

• Cold-weld connection technology leads to improve the cleanliness of active part.

• The vacuum disassembly and the vacuum filling technology measures reduce the partial discharge level effectively and enhance the transformer operating reliability.

• The structure of "Six Direction Positioning" between the active part and the tank assures that the transformer has a strong ability of anti-transportation impact or anti-earthquake.

• Surface treatment and coating, fine processing to tank surface, 7 steps such as acid-washing and phosphating, etc. special anti-fouling paint, ensuring not falling off or rusting away.