S11 Type Double-Winding Full Sealed Oil Immersed Transformer of 160kVA 10-20kv
Oct 30, 2025
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One of the main advantages of our range of oil-immersed transformers is low loss and high efficiency. Through careful engineering and design, we have significantly reduced energy waste during the renovation process. This results in significant savings in power consumption, making our transformers ideal for energy efficient customers. By choosing our energy efficient transformers, businesses can not only reduce their carbon footprint, but also achieve significant cost savings in the long run.
In addition to saving energy, our line of oil-immersed transformers has an impressive array of features that enhance their overall performance. First, these transformers are designed to operate with minimal noise output. Noise reduction is achieved through advanced insulation materials and professional construction technology to ensure a quiet and comfortable working environment.

In addition, our fully sealed transformers are designed to prevent moisture and fire. By eliminating the need for oil storage tanks, we improve the overall safety and reliability of transformers. The elasticity of the corrugated plates in the tank compensates for changes in the amount of oil and prevents air contact, reducing the risk of oil deterioration and insulation aging. This innovative design not only improves the service life of the transformer, but also reduces the need for regular maintenance, thereby saving costs and improving operational efficiency.
S11 Double-Winding Full Sealed Oil Immersed Transformer Technical Parameters
| Rated capacity (kVA) | High voltage(KV) | Voltage Combination | Connective group label | No-load loss(KW) | Load loss (KW) |
No-load current(%) | Short circuit impedance (%) | Weight (KG) | ||
| High pressure tap range | Low voltage(KV) | Weight of oil | Total weight | |||||||
| 30 | 20/10 | ±5*2.5% ±2*2.5% |
0.4 | Dyn11 | 0.09 | 0.66 | 2.1 | 5.5 | 180 | 420 |
| 50 | 0.13 | 0.96 | 2.0 | 150 | 495 | |||||
| 63 | 0.15 | 1.145 | 1.9 | 170 | 560 | |||||
| 80 | 0.18 | 1.37 | 1.8 | 190 | 635 | |||||
| 100 | 0.2 | 1.65 | 1.6 | 215 | 710 | |||||
| 125 | 0.24 | 1.98 | 1.5 | 250 | 840 | |||||
| 160 | 0.29 | 2.42 | 1.4 | 285 | 945 | |||||
| 200 | 0.33 | 2.86 | 1.3 | 340 | 1125 | |||||
| 250 | 0.4 | 3.35 | 1.2 | 390 | 1295 | |||||
| 315 | 0.48 | 4.01 | 1.1 | 445 | 1475 | |||||
| 400 | 0.57 | 4.73 | 1.0 | 515 | 1712 | |||||
| 500 | 0.68 | 5.66 | 1.0 | 6.0 | 460 | 1995 | ||||
| 630 | 0.81 | 6.82 | 0.9 | 565 | 2450 | |||||
| 800 | 0.98 | 8.25 | 0.9 | 635 | 2765 | |||||
| 1000 | 1.15 | 11.33 | 0.7 | 840 | 3650 | |||||
| 1250 | 1.35 | 13.2 | 0.7 | 970 | 4220 | |||||
| 1600 | 1.63 | 15.95 | 0.6 | 1105 | 4800 | |||||
| 2000 | 1.95 | 19.14 | 0.6 | 1205 | 5240 | |||||
| 2500 | 2.34 | 22.22 | 0.5 | 1300 | 5650 | |||||
Customization Optional
160kVA Oil Immersed Transformer
GNEE's 160kVA three-phase oil-immersed transformer has a wide range of optional specifications to meet the specific needs of different scenarios and users.
In terms of voltage, the primary voltage can be selected from common voltage levels such as 10kV, 20kV, and 35kV, and the secondary voltage is generally 0.4kV, etc., and special voltage combinations can also be customized according to the actual power grid conditions.
In terms of connection groups, Yyn0, Dyn11, etc., are commonly selected. The Dyn11 connection group can provide better adaptability to three-phase unbalanced loads, while Yyn0 is more suitable for some systems with specific requirements for neutral point grounding. Cooling methods include oil-immersed self-cooling (ONAN) and oil-immersed air cooling (ONAF). Oil-immersed self-cooling relies on natural convection and radiation heat dissipation, with a simple structure and reliable operation. It is suitable for places with relatively stable loads and good heat dissipation conditions; oil-immersed air cooling adds fan-assisted heat dissipation on the basis of self-cooling, which can effectively reduce the temperature of the transformer when the load is large or the ambient temperature is high, and improve the overload capacity.
In addition, you can also choose to configure an on-load voltage regulator or an off-load voltage regulator. The on-load voltage regulator can adjust the voltage when the transformer is running with load, ensuring the stability of the output voltage, and is suitable for power grids with large voltage fluctuations; the off-load voltage regulator needs to adjust the voltage when the transformer is powered off, and the cost is relatively low. At the same time, according to user needs, it can also be equipped with temperature controllers, gas relays and other protection devices to further improve the safety and reliability of transformer operation.
company profile
GNEE TRANSFORMER has strong production capacity and an efficient marketing team.
Our transformer products include 500kV, 400kV, 330kV, 220kV, and 110kV ultra-high voltage transformers, various dry-type transformers/oil immersed transformers/amorphous alloy transformers of 35kV and below, new energy transformers, and prefabricated substations,
Export series: single-phase transformer, three-phase transformer, cylindrical transformer, isolation transformer, control transformer, voltage regulator and other products, And various specifications of special transformers such as grounding transformers, arc suppression coils, Bitcoin transformers, prefabricated cabins, reactors, electric furnace transformers, rectifier transformers, mining transformers, marine transformers, etc.
GNEE TRANSFORMER has successively passed ISO9001, ISO14001, ISO45001, SA8000 system certification. At the same time, 10kV and 35KV level distribution transformers and box type substations have obtained interna- tional Electrotechnical Commission IEC certification, US UL certification, German TUV certification, EU CE certification, Dutch KEMA certification, and GOST certification. Our product sales cover the global market, including 72 countries and regions such as the United States, Europe, Canada, Mexico, etc.
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GNEE Transformer Order specification
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Transformer type selection |
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□Dry transformer {□SC(B) Epoxy resin □SC(B) Non-encapsulated} □American Box(ZGS) {□Terminal type(-Z-) □Ring network type(-H-)} □European Box change(YBM){□ Dry change □Oil change} |
□ Oil-immersed transformer{□ Fully sealed(-M-) □Oil-bearing pillow} □Amorphous alloy transformer{□Dry amorphous □ Oil amorphous} □ Special transformer{Rectifier, Furnace, Mine, Etc} |
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Transformer basic data selection
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Country of use: |
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Phase number: |
□Three-phase(S conventional) □ Monophase □Other( ) |
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Frequency: |
□50Hz(conventional) □60Hz □ Other( ) |
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Transformer oil: |
□#25(conventional) □#45(minimum temperature below-25℃) |
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Rated capacity: |
□( )kVA Conditions of use □Outdoor type □Indoor type |
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Altitude: |
□Less than 1000m(conventional) □1000-2000m □3000m以上 over |
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Rated voltage(High voltage) |
□6kV □10kV □20kV □35kV □66kV □110kV □220kV □Other( ) |
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Rated voltage(Low pressure) |
□0.4kV □0.66kV □10kV □10.5kV □35kV □其他 Other( ) |
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Connected group |
□Dyn11(conventional) □Yyn0 □YNd11 □li0(Single-phase) □Other( ) |
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Impedance(%): |
□4% □4.5% □5.5% □6% □6.5% □7.5% □8% □Other( ) |
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Voltage regulation mode |
□Voltage regulation without excitation(conventional) □On-load voltage regulation(Z) |
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Voltage regulation range |
□±2*2.5% □±5% □±3*2.5% □Other( ) |
Transformer accessory selection
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□Fan □Temperature control{□ Common □With 485 computer interface} □Dry case{□ Ordinary steel sheet □Aluminum alloy » Stainless steel} □Protection level of dry case(□IP20(Conventional) □IP( )} □Dry case height requirements{□None □Requirements[ ]} □ Cable out mode of the dry variable shell {□ Up-and-out □ Up-and-down □Down-in/DOWN-out □Down-in/UP-out □Down-in/DOWN-out □Down-in/ side-out [□Left □ Right-out]} |
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Note: 1. (Dry change requirements s 100kVA transformer does not include fans, such as fans, need to be charged 2. (Oil changes <630kVA transformer does not include temperature control, gas relay, if necessary, need to increase the fee) |
Other special requirements(additional charges apply below)
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Dry transformer |
□Shell and bottom plate{□Ordinary □Fully sealed} □Travel switch □Magnetic lo □Zero sequence transformer □Copper bar to the low voltage cabinet □Protective mesh □Lighting □100kVA or less Fan □Shock absorber |
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Oil-immersed transformer |
□No.45 oil for non-low temperature areas □Designated brand on-load voltage regulator □400kVA and below low voltage outlet OABC phase with wiring terminals □630kVA or below requires temperature control □800kVA or below Low voltage outlet phase 0 requires wiring terminals □630kVA and below must be equipped with gas relay |
GNEE TRANSFORMER Industrial Layout
Asia:China, Philippines, Cambodia, Malaysia, Myanmar, Indonesia, Vietnam, Mongolia, Japan, Taiwan Province, Bangladesh, Sri Lanka, Lebanon, Saudi Arabia, Turkey, Armenia, Iraq, Iran, Kazakhstan, Kyrgyzstan, Tajikistan, Uzbekistan
Africa:Egypt, Ethiopia, Angola, Botswana, Burundi, Cape Verde, Congo, Guinea, Ghana, Gabon, Zimbabwe, Cameroon, Kenya, Rwanda, Malawi, Mauritius, Mauritania, Mozambique, South Africa, Nigeria, Somalia, Chad, Central Africa
North America: Aruba, Panama, Dominican Republic, Costa Rica, Honduras, Caribbean region,Canada, United States, Mexico, El Salvador, Guatemala, Jamaica
Europe: Bulgaria, North Macedonia, Finland, Norway, Ukraine, Greece, Hungary, Italy, United Kingdom
South America: Argentina, Paraguay, Ecuador, Colombia, Guyana, Venezuela, Uruguay, Chile
Middle East: The Middle East region
Oceania: Australia, Papua New Guinea. Fiji

