Zhejiang Jiangshan Hengli Electrical Co., Ltd. is one of the leading manufacturers and suppliers of oil immersed power transformer in China. If you're going to wholesale durable oil immersed power transformer made in China, welcome to get pricelist from our factory. All customized products are with high quality and low price.
This 6000kVA oil immersed power transformer is a high-performance heavy-duty power transformation equipment, different from small and medium power transformers, this 6000kVA model owns larger rated load capacity for heavy industrial and large grid project use.
The transformer rated capacity reaches 6MVA, designed with 33kV high voltage primary side and 11kV low voltage secondary side, suitable for 33kV to 11kV voltage conversion. It adopts full oil immersed sealed structure, insulating mineral oil fills the tank to realize excellent insulation, heat dissipation and anti-aging performance, stable for long-time continuous operation.
This 6000kVA Oil Immersed Power Transformer is fitted with no load tap changer (NLTC) installed on the primary 33kV side. The tapping adjustment range is ±2×2.5%, which allows manual voltage regulation under power-off status. It stabilizes output voltage to adapt to different incoming voltage fluctuation on site, flexible for various grid working conditions.
Technical Parameter Table
|
Item |
Specification |
|
Rated Capacity |
6000kVA |
|
Phase |
3 Phase |
|
Primary Rated Voltage |
33kV |
|
Secondary Rated Voltage |
11kV |
|
Tap Changer Type |
No Load Tap Changer (NLTC) |
|
Tap Adjustment Range |
±2×2.5% (Primary Side) |
|
Cooling Method |
ONAN (Oil Natural Air Natural) |
|
Core Material |
Cold Rolled Silicon Steel Sheet |
|
Winding Material |
High Purity Copper |
|
Insulation Medium |
Insulating Mineral Oil |
|
Frequency |
50Hz / 60Hz Optional |
|
Vector Group |
Dyn11 / Yyn0 Optional |
|
Standard |
IEC 60076 |
|
Installation |
Outdoor / Indoor Available |
|
Working Temperature |
-25℃ ~ +45℃ |
|
Noise Level |
Low Silent Operation |
|
Service Life |
25 Years+ |
Key component
Transformer windings are the core part of transformers, crafted from high-purity oxygen-free copper. Supported by mature craftsmanship, our windings of Oil Immersed Power Transformerfeature premium performance:
1.Great resistance to lightning, transient and long-term overvoltage
2.Excellent heat resistance, 20+ years long service life under continuous thermal operation
3.Strong short-circuit current withstand capacity
4.High mechanical structural strength


Our Services
Pre-Sales Support
Professional model selection by experienced engineers
24/7 technical consultation (email, phone, online)
Fast customization and design solutions
After-Sales Service
1-year warranty (extended options available)
Dedicated customer support team
Installation and maintenance guidance
Rapid response for technical issues

Factory Capability
As a direct Oil Immersed Power Transformer manufacturer we provide:
- Direct manufacturer pricing: Factory-direct (Best price for 100% upfront).Skip the middleman and the long wait.
- MOQ: 1 unit – flexible cooperation
- Large stock available, fast delivery
- Service: No bidding, no delays, direct deal for private projects.
- Quality tested. Ready for your mines & factories in your country.
- Standard production lead time: 15 days
- Focused on Chinese power transformer supply with stable quality and compliance with multiple international standards.
- Power utilities, installers, and EPC contractors are welcome for long-term cooperation.



Package and transport

We pack all transformer accessories into plywood cases. These boxes come with heavy-duty iron frames and non-fumigation plywood panels. The main transformer unit will be shipped bare and securely fixed inside the container. For large-sized transformers, we'll attach impact recorders to track the G-force data during ocean shipment.
FAQ
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