Product Overview
This three-phase double-winding distribution transformer is a fully sealed, maintenance-free oil-immersed power unit integrated with industry-leading manufacturing processes and high-performance magnetic materials. Built with vacuum oil impregnation technology and a high-grade amorphous alloy core, it represents a new generation of energy-efficient distribution equipment that far outpaces traditional models in energy performance, mechanical robustness and service life.
1. Ultra-Low Energy Loss & Remarkable Energy-Saving Performance
Compared with conventional S11 and S13 series oil-immersed transformers, this transformer achieves a substantial reduction in both no-load loss and load loss, thanks to the low-loss characteristic of the amorphous alloy core and optimized electromagnetic design. The drastically lowered energy consumption delivers tangible long-term benefits: it cuts daily power waste, slashes electricity operation costs, and fully complies with strict energy-efficiency regulations, bringing outstanding economic and low-carbon environmental benefits.
2. 40% Higher Short-Circuit Withstand Capacity
Through structural reinforcement and precision winding technology, the transformer's short-circuit resistance is enhanced by 40% over traditional products. It can reliably withstand short-circuit shocks, instantaneous overloads and voltage fluctuations in the power grid, effectively avoiding winding deformation, insulation damage or operational failures. This high mechanical strength ensures stable and safe operation even under complex and harsh grid conditions.
3. Excellent Thermal Stability & Extended Service Life
Equipped with advanced vacuum oil-immersed technology and a fully sealed structure, the transformer strictly controls its oil surface temperature rise within ≤45K. Excellent heat dissipation performance slows down the aging of insulating oil and internal insulation materials, greatly prolonging the product's service life. The fully sealed, maintenance-free design also eliminates frequent oil inspection, replenishment and leakage handling, reducing on-site maintenance workload and full-life-cycle operating costs.
Technical Features
● Adopts high-performance amorphous alloy core for ultra-low no-load loss and industry-leading energy efficiency
● Vacuum oil impregnation process ensures even oil distribution, high insulation strength and efficient heat dissipation
● Fully sealed oil tank structure, 100% maintenance-free, free of oil leakage and external contamination risks
● Short-circuit withstand capacity improved by 40%, with strong resistance to grid faults and load shocks
● Oil surface temperature rise ≤45K, delivering exceptional thermal stability and slow insulation aging
● Three-phase double-winding design with balanced electromagnetic field, low noise and stable output
● High adaptability to outdoor and unattended distribution stations, suitable for urban, rural and industrial power systems
Type And Meaning
Product Features
Strong overload capacity
This transformer can usually be overloaded by 50% under air cooling conditions. This can meet some temporary or sudden high-load power demands.
Maintenance-free
During the transformer life, you do not need to check, refill or replace the transformer oil. This can greatly reduce the maintenance workload and cost.
Level 1 Energy Efficiency
Level 1 Energy Efficiency
Compared with S9 and S11, this oil-immersed transformer has significantly lower no-load loss and load loss. It can help you save a lot of electricity bills.
Main Technical Parameters
|
Rated Capacity (kVA) |
Voltage |
Vector Group |
No-Load Loss (kW) |
On-Load Loss (kW) |
Short cirait-z (%) |
No-Load Cur (%) |
||
|
V (kV) |
Chng (%) |
V (kV) |
||||||
|
30 |
6 6.3 10 10.5 11 |
±5 Or ±2×2.5 |
0.4 |
Dyn11 Or Yyn0 |
0.33 |
0.60 |
4.0 |
1.70 |
|
50 |
0.43 |
0.87 |
1.30 |
|||||
|
63 |
0.50 |
1.04 |
1.20 |
|||||
|
80 |
0.60 |
1.25 |
1.10 |
|||||
|
100 |
0.75 |
1.50 |
1.00 |
|||||
|
125 |
0.85 |
1.80 |
0.90 |
|||||
|
160 |
0.10 |
2.20 |
0.70 |
|||||
|
200 |
0.12 |
2.60 |
0.70 |
|||||
|
250 |
0.14 |
3.05 |
0.70 |
|||||
|
315 |
0.17 |
3.650 |
0.50 |
|||||
|
400 |
0.20 |
4.30 |
0.50 |
|||||
|
500 |
0.24 |
5.15 |
0.50 |
|||||
|
630 |
0.32 |
6.20 |
4.5 |
0.30 |
||||
|
800 |
0.38 |
7.50 |
0.30 |
|||||
|
1000 |
0.45 |
1030 |
0.30 |
|||||
|
1250 |
0.53 |
12.00 |
0.20 |
|||||
|
1600 |
0.63 |
14.50 |
0.20 |
|||||
|
2000 |
0.75 |
17.40 |
5 |
0.20 |
||||
|
2500 |
0.90 |
20.20 |
0.20 |
|||||
Note:
1. The load loss values below the slash in the table are for products with a Dyn11 connection group.
2. The load loss values above the slash in the table are for products with a Dyn11 connection group, and the load loss values below the slash are for products with a Yyn0 connection group. We can provide products with various voltage transformers, short-circuit impedances, and connection methods according to user needs.
3. The weights and dimensions provided in the table are for reference only. Please contact us for detailed specifications.
Executive Standards
|
GB1094. 1-1996 |
GB1094. 2-1996 |
|
GB1094. 3-2003 |
GB1094. 1-1996 |
|
GB311. 1-1977 |
GB/T25446-2010 |
FAQ
Q: How long is the delivery time?
A: Normal within 10 days. It depends on detail items and quantity.Please contact us for details.
Q: How to get product quotation?
A: You can contact us anytime through the contact information on the website. You will receive our response within 24 hours.
Q: What after-sales services can I enjoy?
A: The transformer comes with a one-year warranty. Long-term online technical support is provided, along with customer training, and regular updates to maintenance manuals and technical guides.
Q: How long is the average lifespan of a transformer?
A: The lifespan ranges from 20 to 40 years, influenced by factors such as maintenance level, operating environment, and load conditions.
Q: How to determine the parameters of the transformer?
A: We can usually find the parameters in transformer nameplates, drawings, outline drawings, and technical tables.
Q: Do you have oil-immersed transformers and dry-type transformers in stock?
A: No, as transformers require customized parameters based on demand, we usually need to design them after receiving an order.
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