6KV 10KV 35KV to 110V 220V 380V 440V 480V Three-Phase MV&HV Power Transformers | 50Hz/60Hz
1. Product Description
This universal series covers professional three-phase MV&HV power transformers tailored for global power usage, supporting mainstream medium and high input voltage grades of 6KV, 10KV and 35KV, with comprehensive low-voltage output options including 110V, 220V, 380V, 440V and 480V. Designed to adapt to dual global power frequencies of 50Hz and 60Hz, this multi-voltage power transformer fully complies with IEC and IEEE industry standards, serving as a versatile core device for medium voltage distribution and high voltage power conversion in utility grids, industrial facilities and civil power systems.
Classified as reliable medium voltage and high voltage power transformation equipment, the product adopts mature industrial manufacturing technology, featuring high-quality silicon steel core and high-purity copper winding structure to effectively reduce no-load loss and load fluctuation during operation. This multi-specification three-phase transformer integrates MV and HV voltage conversion functions, covering low, medium and high voltage level matching requirements that single-specification transformers cannot meet. It supports flexible voltage ratio customization, perfectly adapting to different regional grid standards and terminal equipment power demands worldwide.
Available in both oil immersed and dry-type structural configurations, the series can meet outdoor open-air installation and indoor closed power distribution scenarios respectively. With stable electromagnetic performance, strong anti-interference capability and wide frequency adaptability, the 50Hz/60Hz dual-frequency design eliminates regional power grid compatibility barriers. Whether for urban and rural power grid renovation, industrial dedicated power supply or overseas engineering power projects, this universal MV&HV power transformer can provide accurate and stable voltage conversion solutions, and is one of the most widely used general-purpose power transformers in the global power industry.
2. Core Product Purposes
The core purpose of 6KV/10KV/35KV three-phase MV&HV power transformers is to realize safe, efficient and low-loss hierarchical voltage step-down and electric energy distribution in medium and high voltage power systems, bridging the voltage gap between MV&HV transmission grids and multi-standard low-voltage terminal power consumption equipment for global power usage scenarios.
Primarily, this multi-voltage power transformer undertakes precise voltage conversion tasks for different grade power grids. It can step down 6KV and 10KV conventional medium distribution voltage, as well as 35KV high medium transmission voltage into multiple low-voltage specifications including 110V, 220V, 380V, 440V and 480V. It covers low-voltage power standards for Asian, European, American and African regions, meeting differentiated power demands of civil residential electricity, commercial facility power consumption and industrial mechanical equipment operation. The flexible multi-output design avoids redundant equipment configuration caused by single voltage matching, greatly simplifying the overall structure of power supply systems.
In addition, this dual-frequency power transformer optimizes grid operation quality and power supply safety. It effectively suppresses power grid harmonic interference, stabilizes terminal output voltage, and reduces electric energy loss during power transmission and conversion. With excellent short-circuit resistance and overload tolerance, it can buffer instantaneous current surges caused by grid load changes and equipment startup, isolate circuit fault risks, and protect subsequent power distribution cabinets, electrical machinery and intelligent equipment. Compatible with both 50Hz domestic power grids and 60Hz overseas power systems, it ensures stable and continuous power supply for cross-regional power projects and diversified power usage scenarios.
3. Typical Application Scenarios
3.1 Urban & Rural MV Power Grid Distribution Projects
This three-phase MV&HV power transformer is widely applied in new construction and upgrading projects of urban and rural 6KV, 10KV and 35KV medium voltage power grids. For municipal distribution networks and township power supply stations, it converts medium voltage grid power into standard 220V residential electricity and 380V public facility power, meeting daily power consumption of residential communities, schools, hospitals and urban public infrastructure. Its stable operation performance and strong environmental adaptability fully adapt to long-term unattended operation of outdoor urban and rural substations.
3.2 Industrial Park & Factory Dedicated Power Supply
It serves as core power transformation equipment for light industry, manufacturing, chemical industry, mining and other industrial bases. Most industrial dedicated power grids adopt 10KV or 35KV medium and high voltage power supply standards, while factory production lines, mechanical equipment and automated systems require diversified low-voltage power such as 380V, 440V and 480V. This multi-voltage transformer can realize one-stop voltage matching, adapt to 24-hour continuous high-load operation of industrial parks, and solve the problem of voltage mismatch of imported industrial equipment and multi-type mechanical facilities.
3.3 Overseas Engineering & International Power Projects
Thanks to its 50Hz/60Hz dual-frequency compatibility and full-range low-voltage output coverage of 110V to 480V, this universal MV&HV power transformer is the preferred equipment for overseas infrastructure construction, cross-border industrial parks and international EPC projects. It perfectly adapts to 110V/220V civil power standards and 440V/480V industrial power standards in Europe, America, Southeast Asia and other regions, solving the incompatibility problem of domestic power equipment accessing overseas power grids, and providing reliable power guarantee for global engineering construction.
3.4 New Energy Power Generation & Energy Storage Systems
The transformer series is widely used in supporting power supply of photovoltaic power stations, wind power plants and grid energy storage projects. New energy power generation systems are mostly connected to 6KV, 10KV and 35KV medium voltage grids, requiring stable voltage conversion for on-site equipment operation and grid-connected power transmission. This high-stability three-phase transformer can stabilize fluctuating new energy power output, convert medium and high voltage power into multi-standard low voltage, and improve the safety and stability of new energy grid connection and on-site power distribution.
3.5 Commercial Complex & Special Facility Power Distribution
It is also applicable to large shopping malls, office buildings, airport supporting facilities, railway transit stations and intelligent building power distribution systems. These commercial and public facilities have mixed power demands of civil lighting, office equipment, central air conditioning and intelligent control systems, requiring multiple voltage specifications such as 220V and 380V. The multi-output design of this transformer can meet comprehensive power consumption needs, ensuring stable and efficient operation of commercial and public power systems.
4. Core Product Features
4.1 Full-Range Voltage Matching & Strong Universality
Covering three mainstream MV&HV input voltages of 6KV, 10KV and 35KV, and supporting seven common low-voltage output specifications of 110V, 220V, 380V, 440V and 480V, this three-phase power transformer realizes full coverage of global mainstream power voltage standards. It can freely match civil, commercial and industrial power usage scenarios, completely solving the limitation of single voltage specification of traditional transformers. Users can customize voltage ratios according to project grid conditions and equipment requirements, with extremely high engineering adaptability and market versatility.
4.2 50Hz/60Hz Dual-Frequency Universal Adaptation
Different from conventional single-frequency transformers, this MV&HV power transformer adopts optimized electromagnetic winding and magnetic circuit design, which can maintain stable operation under both 50Hz and 60Hz grid frequencies. It will not cause core overheating, efficiency attenuation or voltage deviation due to frequency switching, perfectly adapting to domestic 50Hz power grids and overseas 60Hz industrial power systems. The dual-frequency design greatly reduces equipment customization costs for cross-regional and international power projects, and improves the global application scope of the equipment.
4.3 Low Energy Loss & High Power Conversion Efficiency
Adopting high-grade low-loss silicon steel sheet core and precision copper winding process, the equipment effectively minimizes no-load loss, load loss and magnetizing current. The optimized internal magnetic circuit structure avoids magnetic flux leakage, and the overall power conversion efficiency is far higher than that of traditional old-fashioned transformers. It can maintain high-efficiency operation under long-term partial load and full-load conditions, effectively reducing daily power consumption and long-term operation costs for power grid enterprises and industrial users, with outstanding energy-saving and environmental protection performance.
4.4 Diversified Structure & Strong Environmental Adaptability
The series provides oil immersed and dry-type dual structural options. Oil immersed transformers adopt fully sealed oil tank and natural heat dissipation system, with excellent waterproof, dustproof and anti-corrosion performance, suitable for outdoor open-air substations and harsh industrial sites. Dry-type transformers feature flame retardant, explosion-proof and pollution-free advantages, ideal for indoor power distribution rooms, commercial buildings and densely populated areas. The whole machine adapts to extreme temperature changes and complex environmental conditions, with strong weather resistance and stable long-term operation.
4.5 Excellent Safety & Fault Resistance Performance
The internal winding adopts integral fastening and multi-layer composite insulation structure, with strong mechanical stability and short-circuit impact resistance, which can effectively resist instantaneous short-circuit current and grid voltage surge damage. Equipped with perfect overvoltage, overcurrent and overheating protection mechanisms, the equipment can automatically isolate faults and avoid equipment burnout and safety accidents. The low partial discharge design ensures safe and reliable long-term operation under medium and high voltage working conditions, meeting strict global power safety standards.
4.6 Low Maintenance & High Comprehensive Cost Performance
This universal three-phase MV&HV power transformer has a mature and reliable internal structure without fragile vulnerable parts, with low daily failure rate and stable overall performance. The oil immersed model adopts fully sealed design without frequent oil replacement, while the dry-type model requires almost no daily maintenance. Both structures support long-term unattended operation, greatly saving later operation and maintenance manpower and material costs. With full specifications, flexible matching and long service life, it has extremely high comprehensive cost performance in various power transformation projects.
5. Frequently Asked Questions (FAQ)
Q1: How to choose the right input and output voltage specification for this multi-voltage MV&HV transformer?
Input voltage selection needs to strictly match the on-site grid voltage: 6KV and 10KV models are suitable for conventional urban, rural and general industrial medium voltage distribution grids, while 35KV models are applied to high-medium voltage transmission grids and large industrial dedicated power lines. For output voltage, 110V and 220V are mainly used for residential civil power and overseas household facilities; 380V is the mainstream domestic industrial three-phase power; 440V and 480V are dedicated voltage standards for European and American industrial equipment. It is recommended to confirm local grid frequency and terminal equipment parameters before selection to ensure accurate matching.
Q2: What is the difference in application between 50Hz and 60Hz dual-frequency operation of the transformer?
This three-phase power transformer is specially optimized for dual-frequency adaptation, with no difference in structural strength, insulation performance and safety standards between 50Hz and 60Hz operation. The core optimization lies in electromagnetic parameter calibration, which avoids magnetic saturation and overheating problems caused by frequency differences. The 50Hz mode is applicable to most domestic, Asian and African power grids, while the 60Hz mode perfectly matches European, American and Southeast Asian power system standards. The equipment can switch frequencies freely without modification, making it highly suitable for cross-border engineering and multi-standard grid integration projects.
Q3: Which structure is better, oil immersed or dry-type for this MV&HV power transformer series?
The two structures have their own applicable scenarios with no absolute superiority. Oil immersed MV&HV transformers have lower manufacturing cost, better heat dissipation performance and stronger overload resistance, suitable for outdoor open-air substations, industrial sites and long-term full-load operation scenarios, with longer service life. Dry-type transformers are flame-retardant, explosion-proof and pollution-free, with low operation noise, more suitable for indoor power distribution rooms, commercial buildings, schools and other indoor densely populated and high fire protection requirement scenarios. Users can select the structure according to installation environment and project safety standards.
