1250kVA 11kv Oil Immersed Distribution Transformer
Nov 06, 2025
Leave a message
Features of 1250kVA 11kv Oil Immersed Distribution Transformer
The three-phase oil Immersed distribution transformer applies new type insulating structure and make the short-circuit resistance strong. The Iron core is made of high quality cold rolled silicon steel plate. High -voltage winding groups is made up of high quality oxygen free copper lines and it adopts multi drum type structure.
Reliable Structure
With the fundament of traditional frames and proved techniques our company made a great improvement for instance. We employ spiral loops with longitudinal oil path to produce a better cooling effect. We improve the effectual support of the loop's terminal face to strengthen the anti-short circuit electricity capability.
Excellent Materials
We use Oxygen free cooper lines of lower resistivity, which will become smoother and burr free after series of additional treatment so the load loss of our transformer is lower and the electric performance is better. We also use high quality silicon steel plate and high quality wooden laminating insulation pieces, and also we use thoroughly filtrated transformer oil and high quality rubber sealing material. All raw materials have passed the quality testing with national standard ISO90000 inspection.
Good Technology and Economic Performance
Compare with previous products, S9 and above series reduces the no load loss by 10%, and load loss by 24%, and no load electric current by 46%, as a result, the operating cost will drop by 19%.
Technical data sheet of 11KV S9,S9-M oil immersed distribution transformer
Rated capacity(KVA) |
Voltage Ratio | Connection group | Impedance | Losses | No load current (%) | Weight | Dimension (LXBXH) |
||||
| High voltage | Low voltage | No load | Load | Active part | Oil | Gross | |||||
| 5 | 11 10.5 10 6.3 6 |
0.4 0.69 |
Yyn0 Dyn11 |
4% |
0.07 | 0.35 | 4 | 50 | 45 | 145 | 550*450*800 |
| 10 | 0.09 | 0.40 | 3.5 | 70 | 55 | 185 | 550*450*800 | ||||
| 20 | 0.11 | 0.52 | 3.0 | 110 | 60 | 235 | 660*505*850 | ||||
| 30 | 0.13 | 0.63/0.6 | 2.3 | 130 | 65 | 265 | 660*530*870 | ||||
| 50 | 0.17 | 0.91/0.87 | 2.0 | 195 | 80 | 365 | 740*600*930 | ||||
| 63 | 0.20 | 1.09/1.04 | 1.9 | 230 | 80 | 400 | 720*620*100 | ||||
| 80 | 0.25 | 1.31/1.25 | 1.9 | 260 | 95 | 460 | 770*640*1030 | ||||
| 100 | 0.29 | 1.58/1.5 | 1.8 | 300 | 95 | 510 | 820*710*970 | ||||
| 125 | 0.34 | 1.89/1.8 | 1.7 | 335 | 115 | 585 | 1040*680*1080 | ||||
| 160 | 0.40 | 2.31/2.2 | 1.6 | 405 | 130 | 685 | 1090*670*1130 | ||||
| 200 | 0.48 | 2.73/2.6 | 1.5 | 490 | 150 | 810 | 1160*760*1090 | ||||
| 250 | 0.56 | 3.2/3.05 | 1.4 | 565 | 170 | 835 | 1215*775*1180 | ||||
| 315 | 0.67 | 3.83/3.65 | 1.4 | 655 | 200 | 1095 | 1345*890*1205 | ||||
| 400 | 0.80 | 4.52/4.3 | 1.3 | 840 | 250 | 1385 | 1450*935*1240 | ||||
| 500 | 0.96 | 5.41/5.15 | 1.2 | 935 | 235 | 1505 | 1410*970*1290 | ||||
| 630 | 4.5% |
1.20 | 6.2 | 1.1 | 1100 | 330 | 1830 | 1595*1040*1315 | |||
| 800 | 1.40 | 7.5 | 1.0 | 1360 | 370 | 2225 | 1765*1170*1350 | ||||
| 1000 | 1.70 | 10.3 | 1.0 | 1455 | 475 | 2555 | 1855*1255*1490 | ||||
| 1250 | 1.95 | 12.0 | 0.9 | 1715 | 545 | 3140 | 1885*1270*1590 | ||||
| 1600 | 2.40 | 14.5 | 0.8 | 2095 | 630 | 3680 | 1950*1620*2020 | ||||
| 2000 | 2.80 | 19.8 | 0.8 | 2340 | 715 | 4190 | 2060*1740*2050 | ||||
| 2500 | 3.30 | 23.0 | 0.7 | 2920 | 830 | 5100 | 2250*1800*2100 | ||||
| Note: Tapping range of high voltage : ±5%,±2*2.5%; Frequency 50Hz | |||||||||||
Oil Filled Distribution Transformer application
- Industrial facilities (manufacturing plants, refineries) needing to power heavy machinery.
- Commercial complexes (malls, hotels, office towers) with high-density electrical demands.
- Municipal or utility projects (substation upgrades, residential area 配电) requiring medium-to-low voltage conversion.
Customization Optional
1250kVA Oil Immersed Transformer
GNEE's 1250kVA oil-immersed transformers offer a variety of optional specifications to meet the needs of different customers. The rated voltage of the transformer can be customized according to customer requirements, with common high-voltage and low-voltage combinations to adapt to different power transmission environments. In order to improve efficiency and safety, the transformer is equipped with an adjustable temperature control device to ensure its stable operation under various working conditions. The oil tank is made of high-strength steel, which has excellent corrosion resistance and pressure resistance, ensuring durability in long-term use. The optional temperature protection system and overload protection device can cut off the circuit in time when the equipment is abnormal to prevent damage.
Customers can also choose different types of cooling methods, such as natural air cooling and forced air cooling, to adapt to different ambient temperature requirements. The insulation system of the transformer is made of high-quality materials, which can effectively improve its short-circuit resistance and service life. In addition, an intelligent monitoring system can be configured according to needs to monitor the operating status of the equipment in real time, provide early warning information, and ensure the safe operation of the equipment.
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
|
When choosing our company's products, please provide the following data to better serve you. |
||
|
Demander |
||
|
Demander: |
Telephonemethods: |
Fax: |
|
Project technical leader: |
Telephonemethods: |
Mailbox: |
|
Transformer type selection |
||
|
□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} |
|
Transformer basic data selection
|
Country of use: |
|
|
Phase number: |
□Three-phase(S conventional) □ Monophase □Other( ) |
|
Frequency: |
□50Hz(conventional) □60Hz □ Other( ) |
|
Transformer oil: |
□#25(conventional) □#45(minimum temperature below-25℃) |
|
Rated capacity: |
□( )kVA Conditions of use □Outdoor type □Indoor type |
|
Altitude: |
□Less than 1000m(conventional) □1000-2000m □3000m以上 over |
|
Rated voltage(High voltage) |
□6kV □10kV □20kV □35kV □66kV □110kV □220kV □Other( ) |
|
Rated voltage(Low pressure) |
□0.4kV □0.66kV □10kV □10.5kV □35kV □其他 Other( ) |
|
Connected group |
□Dyn11(conventional) □Yyn0 □YNd11 □li0(Single-phase) □Other( ) |
|
Impedance(%): |
□4% □4.5% □5.5% □6% □6.5% □7.5% □8% □Other( ) |
|
Voltage regulation mode |
□Voltage regulation without excitation(conventional) □On-load voltage regulation(Z) |
|
Voltage regulation range |
□±2*2.5% □±5% □±3*2.5% □Other( ) |
Transformer accessory selection
|
□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]} |
|
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)
|
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 |
|
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, Pakistan, Indonesia, Vietnam, Mongolia, Japan, Taiwan Province, Bangladesh, Sri Lanka, Lebanon, Saudi Arabia, Turkey, Armenia, Saudi Arabia, Saudi Arabia, 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, Mexico, Uruguay, Chile
Middle East: The Middle East region
Oceania: Australia, Papua New Guinea. Fiji