S11 oil-filled power transformer
Nov 07, 2025
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introduction of S11 oil-filled power transformer
The s11 oil-immersed power transformer uses the company's unique calculation program to optimize the transformer core, coil, body, lead, fuel tank and other components to ensure The S11 oil-immersed power transformer performance. Superior process equipment, careful material selection and efficient production make the s11 oil-immersed power transformer with low loss, low partial discharge, low noise and other characteristics, superior product quality, energy saving and environmental protection, reliable operation and effectively reduce product operating costs. This s11 oil-immersed power transformer is suitable for core structures such as power plants, substations, large industrial and mineralization enterprises.
The core material of s11 oil-immersed power transformer is made of high-quality high-permeability cold-rolled oriented silicon steel sheet. The core is processed by Jog wire shearing, full oblique step seam structure, non-hole lashing, and plate clamp structure. High- and low-voltage coil split-phase integral set, the design pressure is evenly compressed to ensure the axial strength of the coil. The inner coil is lined with a high-strength phenolic paper tube. The inner and outer struts are used for the high and low voltage coils. The bare wires inside s11 oil-immersed power transformer are all covered with insulation. Increase the lead support points to strengthen the strength of the lead bracket and housing. Lead connections are cold.
s11 oil-immersed power transformer tank adopts barrel type or bell cover type. Model "F" is a side-blow cooler. The sealing rubber adopts a "0" type overall structure to ensure that no leakage occurs.
All the gas collecting pipes on the top of the bell cover adopt the slope structure and lead to the gas relay. The fuel tank and the ribs are compression-molded. The pads for the jack pressing are 4 pieces, and they are marked with paint. The s11 oil-immersed power transformer is reasonably arranged and beautiful, and the inner wall of the fuel tank is painted with epoxy paint. The exterior paint uses high-quality silver paint.
S11 oil type transformer Technical Parameter
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| Rated Capacity(KVA) |
Voltage Combination | Vector Group |
No-load Loss (KW) |
Load Loss (KW) |
No-load Curent% |
Short-circuitimpedance | Weight (kG) | |||
| High Voltage(KA) | High Voltage Tapping Range |
Low Voltage(KA) | Oil Weight | Gross Weight | ||||||
| 50 | 20-10 |
±5×2.5% ±2×2.5% |
0.4 |
Dyn11 |
0.13 | 0.96 | 2 | 5.5 |
150 | 495 |
| 63 | 0.15 | 1.145 | 1.9 | 170 | 560 | |||||
| 80 | 0.18 | 1.37 | 1.8 | 190 | 635 | |||||
| 100 | 0.20 | 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 | 0.40 | 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 | 0.8 | 635 | 2765 | |||||
| 1000 | 1.15 | 11.33 | 0.7 | 840 | 3650 | |||||
| 1250 | 1.35 | 13.20 | 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 | |||||
The features of s11 oil-filled power transformer
1. No oil storage tank, lower height than similar products.
2. The fully sealed transformer is exactly the same as the transformer with oil storage tank, so it can correspond to different design models of transformer series for users to choose.
3. When the transformer is sealed, the vacuum oiling process is used to completely remove the moisture in the s11 oil-immersed power transformer. After sealing, the transformer oil does not come into contact with the air which effectively prevents oxygen and moisture from penetrating into the transformer and causing the insulation performance to deteriorate (insulation materials and oil ageing), so it is not necessary to conduct oil sample tests on a regular basis.
4, s11 oil-immersed power transformer has high and low voltage leads, the body and other fastening parts are equipped with self-locking lock nuts, adopting a non-suspended core structure, the body and the fuel tank are closely matched, can withstand transportation vibration and bumps.
5. There are two types of oil tanks: corrugated oil tank and expansion radiator oil tank. Corrugated sheet and expansion radiator not only have cooling function, but also have "breathing" function. The elasticity of corrugated sheet and expansion radiator can compensate for temperature. Changes in oil volume due to changes.
6. Sealing form: It is divided into welding type and removable type.
Welded type-The box edge and cover are welded to death after passing all tests.
Removable-Sealing the box edge and cover with sealing tape and screw.
7. The tank cover is equipped with a rod-shaped oil gauge or rod-shaped oil plug above the oil level of the high-pressure casing.
8. The maintenance cost is only 20% of the general type, and no oil change is required during the normal life cycle, which improves the safety and reliability of power grid 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.
transformer Workshop equipment display
types of transformer from GNEE
Get Transformer Order specification
GNEE Transformer Order specification
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When choosing our company's products, please provide the following data to better serve you. |
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Demander |
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Demander: |
Telephonemethods: |
Fax: |
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Project technical leader: |
Telephonemethods: |
Mailbox: |
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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