750 KVA 11KV Oil Cooled Power Distribution Transformer
Nov 10, 2025
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The rated power of the oil transformer is 750 KVA. This 750 KVA Step Down transformer 11kv to 0.4kv, the primary voltage is 11kv, the secondary voltage is 400v. This oil cooled transformer used mineral oil, which has good insulation, good heat dissipation and so on. Our 750 KVA power transformer was designed with advanced technology and adopts high quality material and components which result in reliable quality and long operation time.
Technical Specification
750 KVA oil filled transformer to Mozambique
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Model |
S11-750 KVA-11/0.4KV |
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Type |
Oil Immersed Distribution Transformer |
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Standard |
IEC60076 |
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Rated Power |
750 KVA |
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Frequency |
50 HZ |
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Phase |
Three |
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Cooling Type |
ONAN |
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Primary Voltage |
11 KV |
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Secondary Voltage |
0.4 KV |
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Winding Material |
Copper |
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Vector Group |
Dyn11 |
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Impedance |
4.5% |
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Tap Changer |
NLTC |
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Tapping Range |
±2*2.5% |
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No Load Loss |
0.98KW |
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On Load Loss |
7.5KW |
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Accessories |
Standard Configuration |
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Remarks |
N/A |
750 KVA 11KV Oil Cooled Power Distribution Transformer Applications
- Commercial and residential power supply: They are used to provide power for apartment buildings, hotels, shopping malls, and hospitals, converting high-voltage distribution power to usable levels for customers.
- Industrial facilities: 750 kVA transformers are a common choice for smaller industrial applications, such as factories, to meet their power needs.
- Small-scale distribution substations: They are used in smaller substations as part of the larger power grid to step down voltage for local distribution.
- Decentralized power sources: In some cases, multiple 750 kVA transformers can be used to handle a large load, such as 7500 kVA, by breaking it into smaller, manageable units, especially when a single larger transformer is impractical to install.
Two types of tap changer for transformer：
There are two ways of transformer voltage regulation: no load voltage regulation and on load voltage regulation. It is called no-load voltage regulation if the tap voltage can be adjusted after power failure; it is called on load voltage regulation if the tap voltage can be adjusted on line.
Basic technical requirements for installation of transformer:
1. The transformer's high-voltage down lead and high-voltage bus must adopt copper core or aluminum core rubber insulated wire;
2. The different phase to phase distance of high-voltage bus, high-voltage down lead and drop out fuse must be less than 300 mm;
3. The distance between the low-voltage side line and the high-voltage down lead shall not be less than 150 mm;
4. It is strictly prohibited that the low-voltage line passes through the high-voltage down lead, and the sag of the lead up and down lead should be neat and consistent;
5. The transformer shell, circuit breaker, arrester ground wire and transformer low-voltage side zero line should be grounded together first;
6. The transformer platform should be kept horizontal and the height difference of diagonal line of the table should be less than 30mm.
What are the advantages of oil cooled transformers?
Generally, oil cooled transformers are very effective heat insulators. Among the many advantages of oil cooled transformers are their low price, great efficiency, and excellent insulating and insulation properties.
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