EC Insulator Jiangxi Co., Ltd. is one of the most reliable manufacturers and suppliers of single phase oil immersed transformer in China. With abundant experience, we are committed to offering high quality custom service. Please feel free to wholesale premium single phase oil immersed transformer made in China here from our factory.
Product Introduction
Our single phase oil immersed transformers are manufactured with grain-oriented silicon steel cores, copper windings and welded steel oil tanks.
The internal design focuses on insulation coordination, heat circulation and mechanical strength. The insulating oil works as both an insulation medium and a cooling medium during transformer operation.
With mature production technology and years of manufacturing experience, the transformers provide an economical solution for local distribution systems with simple maintenance requirements.
Each transformer is inspected and tested before shipment according to IEC and GB standards.
Manufacturing Standards
The design, manufacturing and testing processes comply with international and domestic transformer standards.
International Standards
IEC 60076 Series - Power Transformers
IEC 60296 - Mineral Insulating Oils for Electrical Equipment
Chinese Standards
GB/T 1094 Series
GB/T 6451
Core Structure
3.1 Silicon Steel Core
The core uses grain-oriented silicon steel sheets with low loss and good magnetic performance.
3.2 Core Assembly
Precision cutting and stepped lamination technology reduce eddy current loss and operating noise.
3.3 Core Clamping
A reinforced clamping structure fixes the core and improves mechanical stability during operation.
Protection Design
The transformer adopts a fully welded oil tank with reliable sealing structure to reduce oil leakage. Temperature monitoring devices, external overload and short-circuit protection, and grounding terminals are available according to project requirements for safe and stable operation.
Technical Specifications
Various rated capacities, voltage levels and connection methods are available to meet different distribution requirements.
The transformer design considers power loss, temperature rise and insulation performance to achieve efficient operation.
Standard models can be installed indoors or outdoors under normal operating conditions.
Customized designs are available according to technical specifications and project drawings.
Main Features
The transformer uses insulating oil for cooling and insulation, combined with low-loss core materials and optimized winding design to reduce energy consumption and noise. The welded oil tank provides good protection for outdoor applications, while the mature structure allows easy installation and routine maintenance.
Quality Inspection
Quality inspection covers the entire manufacturing process from raw materials to finished products.
● Incoming materials including silicon steel sheets, copper conductors, steel plates and insulating oil are inspected before production.
● Production processes are monitored according to standard procedures.
● Each finished transformer undergoes tests including insulation performance, winding resistance, loss measurement and oil leakage inspection.
● Factory test reports are provided before delivery.
● Warranty service and technical assistance are available after shipment.
Installation and Maintenance Support
Technical guidance is provided for transformer installation, operation and routine maintenance.
Recommended inspection items include:
- Oil level and sealing condition
- Tank surface and welding areas
- Grounding connections
- Operating temperature
Maintenance should be carried out by qualified technicians. Unauthorized opening or modification may affect product safety and warranty terms.
Delivery and After-sales Service
Production Time
- Standard products: 7–12 working days
- Customized products: 15–20 working days after technical confirmation
Packaging and Transportation
- Export standard wooden cases
- Protective packaging for overseas transportation
- Complete export documents
- Sea, air and land transportation options
Service Support
- Installation guidance
- Operation instructions
- Warranty service for manufacturing defects
- Production and shipment updates
FAQ
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