300KVA 11KV Oil Immersed Distribution Transformer
Nov 07, 2025
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10 units 300kva 11kv oil immersed transformer were produced and shipped to Nigeria.
GNEE transformers are made of high-quality materials and adopt the latest technology, with more reliable performance and structure, high efficiency and energy saving, and favorable price.
300KVA 11KV Oil Immersed Distribution Transformer Product Features
The core is made of high-quality, high-performance silicon steel sheets, with low no-load loss.
The high-voltage winding adopts a layered structure, with high mechanical strength, balanced distribution, and strong short-circuit resistance.
The overall structure is fully sealed, and the vacuum oil filling process is adopted to ensure that the transformer oil is isolated from the outside air, prevent oil aging, and improve the reliability of transformer operation.
The product is equipped with a pressure relief valve, signal thermometer, gas relay, etc. to ensure the safe operation of the transformer.
The corrugated oil tank is used, which is simple to process, has high mechanical strength, good welding effect, no leakage, and good heat dissipation capacity.
It has beautiful appearance and small size, and is widely used in urban and rural power grids.
300KVA 11KV Oil filled Transformer Technical Parameters
| Country of Origin | China |
| Type | Three Phase Oil Immersed Distribution Transformer |
| Winding material | Copper |
| Related capacity | 300KVA |
| Primary voltage | 11000V |
| Secondary voltage | 400V |
| Vector group | Dyn11 |
| Frequency | 50hz |
| Transformer oil | Mineral Oil |
| Cooling method | ONAN |
| Impedance voltage | 4.0% |
| Load loss | 3650W |
| No-load loss | 465W |
| Reference weight | 1005kg |
| Reference dimension | 1305*910*1050mm |
| Manufacturing standards | IEC60076 |
300KVA 11KV Oil Transformer applications
Residential and commercial buildings: Powering homes, offices, and shopping centers.
Industrial sites: Providing electricity to factories, and other industrial and mining enterprises.
Public infrastructure: Used in locations like airports, subway stations, and high-rise buildings.
Power distribution networks: As a key component in stepping down voltage for consumer-level electricity consumption.
What are the two types of distribution transformers?
Based on several phases, there are mainly two types:
Single Phase Distribution Transformer. Ideal for lower capacity applications like residential complexes, commercial buildings etc. ...
Three-Phase Distribution Transformer. Used for higher capacities in industrial setups, large residential complexes etc.
What are the applications of distribution transformers?
Applications of Distribution Transformer
Commercial buildings to step down utility primary voltages to required utilization voltages.
Pumping stations, farms, and isolated houses are located far from the distribution network.
Railway AC electrification systems to power the overhead contact wires.
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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Demander |
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Demander: |
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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, 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