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The 11KV Oil Immersed Transformer (S11-M-(30-2500)) is a three-phase distribution transformer designed for reliable outdoor and indoor power distribution networks. It adopts a fully sealed oil-immersed structure with high-efficiency cooling performance, ensuring stable operation under long-term load conditions.
Built with cold-rolled silicon steel core and oxygen-free copper windings, it delivers strong short-circuit resistance, low energy loss, and excellent voltage regulation performance, making it suitable for industrial, utility, and infrastructure power systems.
In modern grid systems, the 11KV Oil Immersed Transformer is widely selected for its balance between cost efficiency and operational reliability, especially in outdoor substations and industrial power networks.
Performance parameters of S11 type 10/11KV oil immersed transformer.
|
Rated capacity (kVA) |
Voltage combination (kV) |
No-load loss (W) |
Load loss (W) |
No-load current (%) |
Short-circuit impedance (%) |
|
|
high pressure |
low pressure |
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|
30 |
6 6.3 10 10.5 11 |
0.4 |
100 |
630/600 |
2.3 |
4.0 |
|
50 |
130 |
910/870 |
2.0 |
|||
|
63 |
150 |
1090/1040 |
1.9 |
|||
|
80 |
180 |
1310/1250 |
1.9 |
|||
|
100 |
200 |
1580/1500 |
1.8 |
|||
|
125 |
240 |
1890/1800 |
1.7 |
|||
|
160 |
280 |
2310/2200 |
1.6 |
|||
|
200 |
340 |
2730/2600 |
1.5 |
|||
|
250 |
400 |
3200/3050 |
1.4 |
|||
|
315 |
480 |
3830/3650 |
1.4 |
|||
|
400 |
570 |
4520/4300 |
1.3 |
|||
|
500 |
680 |
5410/5100 |
1.2 |
|||
|
630 |
810 |
6200 |
1.1 |
4.5 |
||
|
800 |
980 |
7500 |
1.0 |
|||
|
1000 |
1150 |
10300 |
1.0 |
|||
|
1250 |
1360 |
12800 |
0.9 |
|||
|
1600 |
1640 |
14500 |
0.8 |
|||
|
2000 |
2280 |
17820 |
0.6 |
5.0 |
||
|
2500 |
2700 |
20700 |
0.6 |
|||
Compared with standard market solutions, the 11KV Oil Immersed Transformer offers a more balanced performance in efficiency, durability, and lifecycle cost control.
|
Comparison Item |
Our S11 Oil Immersed Transformer |
Standard S9 Transformer |
Dry Type Transformer |
|
Core Material |
Cold-rolled silicon steel |
Ordinary silicon steel |
Silicon steel / epoxy resin |
|
Energy Loss |
Lower no-load loss |
Higher loss |
Medium to high loss |
|
Cooling Method |
Oil natural cooling |
Oil cooling |
Air cooling |
|
Service Life |
Long service life |
Medium |
Medium |
|
Maintenance |
Low maintenance cost |
Medium |
Higher maintenance in dusty environments |
The 11KV Oil Immersed Transformer is widely applied in rural power grids, industrial factories, mining operations, commercial complexes, and utility substations where stable voltage conversion and continuous operation are required.
Q1: What is the main advantage of an oil immersed transformer?
A: It provides better cooling performance, higher overload capacity, and longer service life compared to many dry-type alternatives.
Q2: Is the 11KV Oil Immersed Transformer suitable for outdoor use?
A: Yes, it is designed for both indoor and outdoor substations with proper installation protection.
Q3: How often does the oil need to be replaced?
A: Under normal operating conditions, transformer oil can last many years, but periodic testing is recommended instead of frequent replacement.
Q4: What makes this model more efficient than older transformers?
A: The S11 design reduces no-load losses and improves energy efficiency compared to older S9 series models.
Q5: Can it handle heavy industrial loads?
A: Yes, the transformer is designed for high-load industrial and utility applications with strong short-circuit resistance.
Address
Jinlu Industrial Zone, Beibaixiang Town, Yueqing City, Wenzhou City, Zhejiang Province, China
