Power System 750kVA, 50Hz/60Hz, Three Phase
Certifications IEC 62271-200, IEC 694, GB3906, DIN VDE 0670
The Huajidian 750 kVA 3 phase dry type transformer is a core device suitable for modern high-standard power distribution scenarios. This product abandons the flammable insulating oil structure of traditional oil-immersed transformers, optimizing the core and winding process. It can operate stably in 10kV/11kV medium-voltage power grids, with a rated capacity of 750kVA, fully meeting the continuous power supply needs of medium-capacity scenarios.
Leveraging mature customized R&D and large-scale production capabilities, Huajidian adheres to national and IEC international standards throughout the manufacturing process. It is suitable for complex operating conditions such as indoor substations, basements, densely populated commercial spaces, and humid/dusty environments, making it the preferred power distribution equipment for high-safety, low-maintenance-cost projects.
Traditional oil-immersed transformers are prone to oil leaks, fires, and explosions. This product contains no flammable insulating oil and adopts an oil-free flame-retardant structure, ensuring it is non-flammable and non-explosive, eliminating various safety hazards at the source and fully meeting stringent fire safety standards. It can be safely installed in densely populated scenarios such as indoor substations, basements, and enclosed shopping malls, achieving zero-risk operation.
For the cooling needs of 750kVA medium-capacity equipment, the product comes standard with natural air self-cooling (AN) mode, relying on natural air convection for heat dissipation. It requires no additional power, has a simple structure, and an extremely low failure rate, fully meeting the cooling requirements of normal daily loads.
During peak power consumption or sudden overloads, a bottom crossflow fan can be added, upgrading to forced air cooling (AF) mode. This instantly increases load capacity, easily handling short-term high-load conditions, preventing equipment overheating and overload issues, and ensuring long-term stable operation.
The 750 kVA 3 phase dry type transformer does not require regular oil changes or inspections like oil-immersed transformers. Daily maintenance only requires simple cleaning, greatly saving on labor costs and equipment operating expenses. Equipped with a low-loss silicon steel core, it is energy-efficient, durable, and operates with low noise, without generating environmental noise pollution, making it suitable for high-standard environments such as commercial, medical, and office settings.
Utilizing vacuum epoxy resin casting winding technology, it boasts excellent moisture-proof, dust-proof, and stain-resistant properties, making it suitable for complex environments such as humid underground spaces and dusty industrial workshops. An IP protection enclosure can be added as needed to further enhance protection capabilities, comprehensively covering both conventional and special power distribution scenarios.
As a professional transformer manufacturer in China, Huajidian is equipped with a fully automated vacuum epoxy resin casting production line. The entire casting and curing process is precisely controlled mechanically, completely eliminating process problems such as winding bubbles, cracks, and uneven insulation, ensuring a high degree of consistency in quality and performance for every piece of equipment.
Quality control is implemented throughout the entire process. Raw materials such as silicon steel sheets, oxygen-free copper wires, and epoxy resin undergo layer-by-layer sampling inspection upon arrival. Finished products undergo rigorous testing before leaving the factory, including withstand voltage, partial discharge, temperature rise, and short-circuit impact tests, fully complying with IEC international standards and national industry standards. Quality can withstand on-site verification.
The factory boasts large-scale production capacity for 750 kVA 3 phase dry type transformers, flexibly handling both large-scale engineering orders and small-batch customized orders, strictly controlling production cycles to ensure on-time delivery. Leveraging a comprehensive supply chain and logistics system, it can stably supply domestic and international markets, making it a trustworthy supplier.
Simultaneously, the brand has a professional technical and foreign trade team, providing one-on-one service throughout the entire process, including selection and quotation, drawing coordination, on-site installation guidance, and after-sales maintenance. It can assist clients in completing project certifications and standard audits, reducing the difficulty of project implementation.
A public hospital in Southeast Asia underwent a power supply system upgrade, requiring high-safety, high-stability power distribution equipment to support the operation of precision medical equipment. The project purchased eight Huajidian 750kVA epoxy resin cast dry-type transformers. The products comply with IEC international standards, featuring low partial discharge, stable voltage output, and a dual heat dissipation system that can easily handle peak power consumption of medical equipment. The equipment has been operating stably for two years, achieving zero power outages for the hospital and helping the project successfully pass international safety certification.
Q1: What are the core advantages of oil-free dry-type transformers compared to traditional oil-immersed transformers?
A1：Traditional oil-immersed transformers rely on insulating oil for heat dissipation and insulation, posing risks of oil leakage, fire, and explosion, thus limiting their application scenarios. The Huajidian 750kVA dry-type transformer adopts a completely oil-free design, eliminating the safety risks associated with oil at the source. It also boasts advantages such as moisture and dust resistance, maintenance-free operation, low noise, energy saving, and low operating costs, making it suitable for a wider range of scenarios. Its safety and environmental friendliness far surpass traditional oil-immersed equipment.
Q2: How does the equipment ensure that heat dissipation does not exceed limits in the absence of oil-assisted cooling?
A2：The 750 kVA 3 phase dry type transformer employs a dual cooling solution of natural self-cooling (AN) + forced air cooling (AF), completely solving the heat dissipation problem of medium-capacity equipment. The standard self-cooling mode relies on natural air convection for heat dissipation, with zero energy consumption and high stability, meeting the heat dissipation needs of normal daily loads. During peak electricity consumption or sudden overloads, the fan can be activated to switch to air cooling mode, quickly improving heat dissipation efficiency and load capacity, effectively preventing high-temperature overload and ensuring stable operation.
Q3: Does this 750 kVA 3 phase dry type transformer support customized solutions for overseas projects?
A3: We support OEM/ODM customization for all product categories. We can personalize parameters such as protection level, voltage regulation method, temperature control accessories, and inlet/outlet wiring to suit specific overseas project conditions and local standards. All customized products comply with IEC international standards and regional industry specifications, are suitable for various overseas engineering scenarios, and are supported by a professional foreign trade team throughout the process, ensuring project compliance and smooth delivery.
Address
Room 2106, West End, Guangfeng Building, Ouhai District, Wenzhou City, Zhejiang Province, China
Tel
