31.5 MVA three phase oil immersed power transformer
Primary Voltage Ratings: 115 kV
Secondary Voltage Ratings: 34.5 kV
Power Rating: 31.5MVA/36MVA
Standards: IEC
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Send E-mail: sales@gneeelectric.com
Tel: +8615824687445
Henan GNEE Electric Co., Ltd. is one of the most reliable manufacturers and suppliers of 31.5 mva three phase oil immersed power transformer in China. If you're going to buy customized 31.5 mva three phase oil immersed power transformer made in China, welcome to get quotation from our factory. Quality products and reasonable price are available.
introduction of 31.5 MVA Power Transformer
GNEE TRANSFORMER supplies 31500 kVA three phase oil immersed power transformer.
The 31.5 MVA 115/34.5 kV Transformer is an IEC-standard, mineral oil-immersed unit designed for continuous operation. It features a robust ONAN/ONAF cooling system and includes a 32-step on-load tap changer, automatic voltage regulator, and multiple safety accessories like Buchholz relays and thermal imaging.
Suitable for outdoor installation, it supports a maximum primary voltage of 123 kV and secondary voltage of 36 kV. This oil filled transformer ensures reliable performance with a temperature rise of 55/65 ºC and includes comprehensive monitoring and protection features.
31500 kVA three phase oil immersed power transformer Specifications:
| Rated Power: 31.5 MVA (Continuous) / 36 MVA (Short-Term) | Nominal Voltage: 115 kV / 34.5 kV |
| Number of Phases: 3 | Cooling System: ONAN/ONAF |
| Type: Mineral Oil Immersed Transformer | Rated Frequency: 60 Hz |
| Working Regime: Continuous | Primary Voltage: 115 kV |
| Maximum Service Primary Voltage: 123 kV | Primary Winding: Wye with Neutral |
| Tapping Range: +/- 16 x 0.625% | Secondary Voltage: 34.5 kV |
| Maximum Service Secondary Voltage: 36 kV | Secondary Winding: Wye with Neutral |
| Compensation Winding Voltage (Tertiary): 15 kV (Compensation Only, Not Accessible) | Maximum Service Tertiary Voltage: 17.5 kV |
| Compensation Winding: Delta | Connection Group: YNyn0d1 |
| BIL: 550/170/95 kV | Coil Material (HV/LV): Copper |
| Coil Material (Compensation Winding): Copper | Isolation Material: Mineral Oil |
| Conservator Tank: Included | Temperature Class: E (120 ºC) |
| Temperature Rise (Oil/Coil): 55/65 ºC | Altitude: <3000 feet |
| Ambient Temperature: Max 45 ºC, Min 5 ºC | Location: Outdoor |
| Color: Gray, RAL 7035 | Bushing Location (HV/LV): Top Cover |
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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Project technical leader: |
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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
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