35 to 0.4kv 3 Phase 2500kva Power Transformer

The core of 35 to 0.4kv 3 phase 2500kva power transformer is made of high magnetic conductivity cold rolled oriented silicon steel sheets, and the entire jointing process is carried out using a full bevel joint and no hole binding method, effectively reducing no load loss and excitation current. Both the high voltage and low voltage windings are made of oxygen-free copper wires (or aluminum wires as required), with the high voltage winding in a multi layer cylindrical structure and the low voltage winding in a foil winding or double spiral structure, providing good electrical strength and short circuit resistance.

The 35 to 0.4kv 3 phase 2500kva power transformer’s casing undergoes vacuum drying and vacuum oil injection treatment, ensuring a stable and reliable insulation system. The oil tank adopts a corrugated sheet or heat dissipation tube structure, balancing heat dissipation efficiency and sealing performance, and is equipped with pressure relief valves, gas relays, oil level gauges, temperature measuring elements, and other complete protection devices.

Our factory has the full process production capacity for transformers of 35kV and above, including winding, core assembly, casing assembly, vacuum treatment, and factory testing. Before leaving the factory, each product undergoes multiple routine tests, such as winding resistance measurement, voltage ratio and connection group designation verification, etc.

35 to 0.4kv 3 phase 2500kva power transformer features low loss, low noise and low temperature rise, and is suitable for continuous operation in indoor, outdoor, high altitude or areas with high pollution levels.

Technical specification:

Q:What is the core function of a 35 to 0.4kv 3 phase 2500kva power transformer with a 6.5% short circuit impedance, and what is its significance for the safe operation of the transformer?

A:The 6.5% short circuit impedance specified as the standard configuration for 35 to 0.4kv 3 phase 2500kva power transformer is a key parameter for ensuring the safe and stable operation of the transformer. This parameter can effectively limit the short circuit current on the low-voltage side of the 35 to 0.4kv 3 phase 2500kva power transformer , enhance the dynamic and thermal stability of the transformer windings, and prevent the deformation and insulation damage of the windings caused by short circuit faults. At the same time, this impedance parameter is adapted to the structure of the transformer body, which can avoid abnormal leakage magnetic field and overheating problems. It can also provide a standard basis for the setting of transformer relay protection, avoid overstep tripping, and ensure that 35 to 0.4kv 3 phase 2500kva power transformer can operate in parallel without circulating current, thereby guaranteeing the safe, economic and stable operation of the transformers.

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