Power System 4000kVA, 50Hz/60Hz, Three Phase
Certifications IEC 62271-200, IEC 694, GB3906, DIN VDE 0670
The Huajidian 4000 KVA three phase oil immersed transformer is a core piece of equipment in industrial and mining enterprises and substations. Utilizing a mature oil-immersed heat dissipation structure and independent conservator design, it is suitable for large-capacity, long-term, heavy-load continuous operation. With advantages such as low loss, high insulation strength, and strong short-circuit impact resistance, it can smoothly cope with operating condition fluctuations and load surges, making it a key piece of equipment for large-scale industrial power distribution and long-term stable power supply.
Utilizing high-permeability, oriented cold-rolled silicon steel sheets, processed with a multi-stage stepped core and full-slant joint technology, significantly reducing no-load losses and no-load current. Even under long-term full-load operation, it maintains high energy efficiency, effectively reducing long-term electricity costs for enterprises.
Both high-voltage and low-voltage windings use oxygen-free copper wire: the high-voltage winding has a multi-layer cylindrical structure, and the low-voltage winding has a continuous structure, resulting in uniform leakage flux distribution and high mechanical strength, capable of withstanding the enormous mechanical stress caused by sudden short circuits in the power grid.
The 4000 KVA three phase oil immersed transformer tank is made of high-quality cold-rolled steel plate and equipped with corrugated heat sinks; an independent oil conservation tank is located at the top to compensate for the thermal expansion and contraction of the transformer oil during the operation of large-capacity equipment. Combined with a dehumidifier to filter moisture and impurities from the air, it slows down oil aging. Compared to fully sealed models, this unit has a moderate height, facilitating oil level monitoring and routine maintenance, making it suitable for routine maintenance scenarios in substations and large factories.
The oil tank surface is coated with a corrosion-resistant and weather-resistant coating, adapting to oil, dust, and humid industrial environments, and is resistant to rust and corrosion during long-term outdoor use.
The high-voltage side uses multi-layer shed porcelain bushings, providing ample creepage distance to meet insulation requirements for 35kV and below, preventing flashover accidents. A pressure relief valve and gas relay are installed on the top to monitor the internal status of the equipment in real time, providing rapid warning and pressure relief in case of faults to protect equipment safety. The nameplate clearly indicates the model, capacity, voltage level, and other parameters for easy verification by maintenance personnel.
A large non-ferrous metal mining company in North China purchased three Huajidian 4000 KVA three phase oil immersed transformer for underground power supply and surface substation construction. The mining area experiences high equipment load impacts, complex outdoor operating conditions, and high requirements for power supply continuity. Since its commissioning a year ago, the equipment has been operating at full load for over 16 hours daily, demonstrating stable operation, low no-load loss, and no short-circuit faults. The independent oil conservator design facilitates daily inspection and maintenance, significantly reducing the risk of power outages and ensuring continuous mine production.
Q1: Does this 4000 KVA three phase oil immersed transformer require regular maintenance?
A1: Depending on the industrial environment and operating load, regular checks of oil level, oil quality, and component condition are necessary, along with replacing the desiccant in the desiccant absorber. Compared to small, fully sealed transformers, this model has a longer maintenance cycle and controllable maintenance costs.
Q2: What are the installation requirements?
A2: It must be installed in a dedicated power distribution room or on a concrete foundation in an outdoor substation. Proper ventilation, heat dissipation, and water prevention measures must be in place, and sufficient space must be reserved for maintenance.
Q3: Can it adapt to humid and dusty outdoor industrial environments?
A3: Yes. The entire unit is coated with anti-corrosion and weather-resistant paint. The oil tank structure isolates water vapor from deteriorating the oil. The high-voltage bushing has stable insulation performance and can be stably applied to harsh outdoor working conditions such as substations, mining areas, and large factories.
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Room 2106, West End, Guangfeng Building, Ouhai District, Wenzhou City, Zhejiang Province, China
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