China Three Phase Transformer Supplier for Global Power Projects
With over 17 years of experience, Jinan Omek Electric Power Co., Ltd. (OMEK Power) is a leading three phase transformer supplier in China. You can select dry type transformer or oil type transformer for different cooling methods. If your project requires for voltage step-up or step-down, impedance matching, and safe electrical isolation, our three phase transformers are engineered to satisfy.
We offer OEM and ODM customization for various connection types – Delta (Δ) and Wye (Y). Welcome EPC contractors and project partners to visit our transformer factory for on-site inspections!
OMEK™ 3 Phase Transformer
OMEK Power 3 phase transformers use a concentric winding design. Different from our single phase transformers, they are designed for voltage step-up or step-down in three-phase power systems or for low-voltage distribution networks (3 phase distribution transformer) with fluctuating loads.
Product Specifications
Key Specifications
>> Core: Three-limb 3D wound core, made of amorphous alloy or silicon steel
>> Windings: Copper or aluminum
>> Connection Groups: Dyn11, Yyn0, Yzn11
>> Dry type: forced air cooling (fans)
>> Oil-immersed: radiators or cooling fins
>> Tap changer: On-load tap changer available for large-capacity units
>> Bushings: High-reliability design for safe operation
Our Delivery Information
Payment Terms: T/T, L/C
Price: Starting from USD 6,000
Minimum Order Quantity: 1 unit
Customization capabilities: both for small batch and large scale
Lead Time: 7–14 business days
Ships from: Qingdao/Shanghai, China
Shipping Methods: Ocean freight, road transportation, and railway transportation
Packaging Details: Wooden crate packaging. The transformer is securely fixed with bolts and fastening straps.
Delivery Details: Complete documentation enclosed with the shipment. The files are packing list, product certificate of conformity, electrical drawings, and installation manual.
OMEK Three Phase Transformer Supplier's Main Export Markets
- Algeria
- Nigeria
- Egypt
- Ghana
- Ethiopia
- Mauritius
- South Africa
- Argentina
- Brazil
- Peru
- Dubai
- India
- United States
- Philippines
- other regions
Our Hot Selling Categories
Three Phase Dry Type Transformer
SCB Model series
SCB18-(30-2500)/10
SCB13-(30-2500)/10
SCB12-(30-2500)/10
SCB12-(30-2500)/35
SCB10-(30-2500)/10
SCB14-(30-2500)/10
3 phase dry type transformer features
Capacity Range: 10–10,000 kVA available
Voltage: Custom voltages available upon your request
Conductor Material: High-purity oxygen-free copper foil
Mechanical & Electrical Performance: High mechanical strength with excellent electrical performance
Safety & Reliability: Safe and reliable operation with stable electrical conductivity
Maintenance: Easy maintenance
Applications: Commercical buildings and public facilities, health care systems, data center, transportation, photovoltaic power generation system
Three Phase Isolation Transformer
Specifications
Cooling type: dry type/air cooled
Capacity: 5 kVA – 4,000 kVA
Voltage conversion: input and output voltage can be customizable (such as 380v to 220v, 480v to 120v, etc.)
Electroplated and baked paint tripod: anti corrosion, anti-rust, durable
High-quality casters: easy to move, can rotate 360°
High-quality wire cores and voltage regulating coils: with precise adjustment, ensure accurate output
The shell is designed with multiple holes, and a cooling fan is installed on the back for strong heat dissipation
3 phase isolation transformer features
- Overload protection: 1.2 times of rated load is allowed
- Isolation of electricity
- Stable voltage, safe output
- Ultra high temperature resistance
- Water and dust proof
- Short circuit is not easy to occur
- Applications: Construction site, tunnel lighting, mechanical equipment, industrial parks, medical rooms
Three Phase Transformer Variants & Customization Options (OEM/ODM)
Manufactured by OMEK Power, a professional three phase transformer manufacturer with over 17 years of experience. Each transformer is engineered and manufactured to your exact specifications.
Product Types Available- – 3 Phase Auto Transformer
- – 3 Phase Step-Down Transformer
- – Phase Step-Up Transformer
- – Core Type Transformer
- – Dry-Type Transformer
- – Oil-Immersed Transformer
- Performance & Design Options
- – Standard / High / Ultra-High Efficiency
- – Double-Shielded Design
- – On-Load Tap Changer (OLTC)
- – High Protection Class (Indoor / Outdoor Enclosures)
- – Non-Standard Voltage Designs
- Technical
Capability- – Rated Capacity: up to 10,000 kVA
- – Primary Voltage: up to 35 kV
- – Secondary Voltage: customized per requirement
- – Tap Range: typically ±5% (customizable)
- Global Voltage Compatibility
Supports global standard voltages, including but not limited to:
600V / 480V / 400V / 380V / 220V / 208V / 120V — any input/output combination available. - Full Custom Design Capabilities
According to your project requirements, we can tailor:
- – Input & output voltage levels
- – Vector group configuration
- – Winding capacity distribution
- – Secondary single-phase windings
Tell Us About Your Requirement
The above are the regular product variations of OMEK Power. We are well aware that each project has its own uniqueness. Our highly skilled engineering team can provide fully customized solutions, including special impedance, noise reduction design, special dimensions, color, and customer-specified brand logos.
Please provide your specific technical parameters and application scenarios, and we will recommend or design the most suitable variation for you.
OMEK Power 3 Phase Transformer Manufacturing Process
Our 3 Phase Transformer Tests
- load test
- phasing out test
- polarity test
- short circuit (sc) test
- open circuit (oc) test
- vector group test
Authorized Certification Leads to Reliable Quality Assurance
State Grid, Southern Power Grid, Triple System Certification, Patent Invention
Advantages of Our Three Phase Transformer
One-Stop Procurement to Save Your Time and Effort
To save your time and effort in purchasing related products, OMEK has the abilities to supply you with the following ranges.
Application of three phase transformer
Three phase transformers have wide applications. We can commonly see them in the below places.
Related Products
FAQ
Have any questions? We’re here to help you out.
A three (3) phase transformer is an electrical device specifically used in three-phase power systems. It is capable of increasing or reducing voltage. It is indispensable in various industrial settings such as power transmission, substations, and factory workshops. With it, the electricity can be delivered stably and efficiently.
The most common structure of a 3 phase transformer is a three-column core and a three-phase three-winding design. This structure is compact and highly efficient.
Additionally, three single-phase transformers can be connected in a star (Y) or delta (Δ) configuration. In these connections, they can still achieve the function of three phase voltage transformation.
The three phase transformer made by OMEK Power have the magnetic core, primary and secondary windings, insulation system, bushings, tap changer, cooling components, and protection devices. These parts work together to ensure an efficient, stable, and safe power transformation.
Key parts include below for your reference:
- – Magnetic core
- – Primary windings
- – Secondary windings
- – Insulation system
- – Bushings
- – Tap changer (off-load or on-load)
- – Cooling system (fans or radiators)
- – Protection and monitoring devices
Three phase transformers have numerous types. These types can be classified as follows based on their cooling methods, applications, insulating media, and structural features.
Classification Basis | Types | |
By Cooling Method | Dry-Type Transformer | The coil is cast or impregnated with solid materials, such as epoxy resin. It is cooled by air. |
Oil-Immersed Transformer | The coil is immersed in transformer oil. The oil helps insulate and cool. | |
By Application | Power Transformer | It is the most widely used type. This type is used for voltage increase and decrease in power transmission and distribution systems. |
Rectifier Transformer | It can provide special power supplies for some equipment requires direct current. | |
Electric Furnace Transformer | For steelmaking electric and submerged arc furnaces, it provides high-current power supplies. | |
Grounding Transformer | In a three-phase power grid without a neutral point, a neutral point is artificially created for grounding. | |
By Internal Structure | Core-Type Transformer | Most commonly, the coil surrounds the iron core column |
Shell-Type Transformer | The iron core surrounds the coil. It has extremely high mechanical strength and strong resistance to short-circuit current, and is often used in high-current special transformers. | |
Combined-Type Transformer | It is combined by three single transformers. | |
By Operating Frequency & Special Requirements | Power Frequency Transformer | Working at 50/60Hz. It is the most common |
Medium / High Frequency Transformer | It is used in special fields, such as frequency converters and induction heating. |
The three phase transformer has a unique advantage, which is that it can perform voltage conversion in a three-phase power system. This is a necessity for industrial production and power grid operation!
Cheaper and more efficient
Under the same power output, the iron core and copper material used for a single three-phase transformer are less than the combined total of three single-phase transformers.
Super flexible wiring
It can be connected in either a star (Y) or delta (Δ) configuration. It can also output different voltages such as 380V and 220V, which can match the power requirements of any equipment.
It is indispensable in industry. Factories, buildings, and motor drive systems all rely on it for power supply. This role cannot be replaced by single-phase transformers at all.
So, like the OMEK Power’s three phase transformers, with their efficient three-phase power conversion ability, they can provide a compact, reliable, and efficient complete solution for modern power facilities.