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Reliable 400kVA Oil-Immersed Transformer for High-Efficiency Industrial Solutions
US$179.10-1,791.04
1 Piece
Product profile
Customization
AvailableApplication
Power, ElectronicPhase
ThreeModel NO.
S20-MCore
Core-type TransformerCooling Method
Oil-immersed Type TransformerWinding Type
Two-winding TransformerCertification
ISO9001-2000, ISO9001, CCCUsage
Power Transformer, Distribution TransformerFrequency Characteristics
Low FrequencyShape of Core
RingBrand
YuantongVoltage Grade
10.5kvRated Capacity
400kVAInsulation
Insulating OilWinding Material
AluminumTransport Package
Wooden BoxSpecification
1400kgTrademark
YuantongOrigin
ChinaKey features
Superior Heat Dissipation: Oil-circulating structure ensures efficient temperature control and stable operation under overload.
Long Service Life: Built for durability with minimal maintenance, operating reliably for decades.
Comprehensive Protection: Real-time monitoring of temperature, pressure, and oil-gas status prevents faults and discharge.
Wide Compatibility: Adaptable to power distribution, industrial production, new energy, and transport hubs.
Flexible Customization: Offers full customization from samples, designs, minor adjustments to complete custom solutions.
1-Year Warranty: Covers mechanical defects with comprehensive after-sales support for peace of mind.
OEM & ODM Services: Professional engineering team supports custom transformer solutions meeting international standards.
High Safety Standards: ISO9001, CCC certified with 100% inspection ensuring quality and safety for high-voltage conditions.
Company profile
Business Type: Manufacturer/Factory CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 1 Year CertifiedNearest Port: Shanghai PortAverage Response Time: ≤5.27h
About Our Factory & Business Background
AddressNantong, Jiangsu, China
Plant Area15458 square meters
Terms of PaymentLC, T/T, D/P
International Commercial Terms(Incoterms)FOB, CIF, CFR, EXW
Average Lead TimePeak Season Lead Time: within 15 workdays, one month Off Season Lead Time: within 15 workdays, one month
Minimum Order Quantity1
Supply Chain Partners86
Our Production Capability & Technical Expertise
Main ProductsPower Transformer, Oil Immersed Transformer, Dry Type Transformer, Pole Mounted Transformer, Amorphous Alloy Transformer, Compact Substation (European Type Prefabricated, New Energy Transformer, Special Transformer, Open Ventilated Dry Transfomer(Non-Encapsulated), Vpi Dry Transformer
Production Lines5
Production MachinesCross Cutting Production Line, Automatic Laminating Machine, Curing Oven, Pouring Machine, Slitting Cutter, Wire Wrapping Machine
QA/QC inspectors12 people
Inspection Type for Finished Products100% inspection(Visual inspection & Function inspection)
Inspection Method for Finished ProductsHave instructions and uniformly followed
R&D Engineers13 people
Traceability of Raw MaterialsYes
Our Industry Experience & Global Business Record
Main MarketsDomestic
Repeat Buyers Choice10%~30%
Overseas Agent/BranchNo
New Products Launched in Last yearYes
Our Certifications, Standards & Industry Recognition
Management System CertificationISO9001:2015, ISO45001:2018, ISO14001
Product CertificationCE
Cooperated with Fortune 500Yes
Product Q&A
Q:Are oil-immersed transformers only suitable for outdoor use?
A:
No. Oil-immersed transformers are suitable for outdoor, indoor, and box substation installations. With superior heat dissipation and overload capabilities, they are widely applied in power grids and industrial settings, capable of indoor operation with adequate ventilation and fire protection.
Q:Is noise during operation of oil-immersed transformers a fault?
A:
Steady humming is normal electromagnetic noise. Sharp sounds, intense vibration, and unstable noise indicate issues due to core looseness, unbalanced load, or abnormal voltage, needing timely maintenance.
Q:Does transformer oil need regular replacement?
A:
Frequent replacement is unnecessary. Regular quality testing, impurity filtering, and dehumidification suffice. Replace oil when severely aged, damp, carbonized, or failing insulation standards.
Q:What are the core advantages of oil-immersed transformers compared with dry-type transformers?
A:
They offer superior heat dissipation, greater heat capacity, stronger overload resistance, longer life, and lower maintenance costs, ideal for high-power and continuous use in industrial and grid environments.
Q:Can oil-immersed transformers operate under full load for a long time?
A:
Yes. Standard oil-immersed transformers support long-term operation at rated load with short-time overload capacity. They run stably with quality oil and proper heat dissipation and ventilation.
Send Inquiry
*To:
Jiangsu Yuantong Electric Group Co., Ltd.
Jiangsu Yuantong Electric Group Co., Ltd.*Content:
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