Buried Transformer
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introduction of Buried transformer
GNEE TRANSFORMER supplies buried transformer.
Buried transformer can be used in road, bridge, tunnel and other long distance, small load high-voltage transmission system, overhead line into the underground project combined transformer and community power supply system. It is widely used in underground transmission and distribution networks with high power supply reliability, no impact on the surrounding environment, three groups of 50HZ, voltage level 10kV and below, for urban arterial roads airports, bridges, tunnels, large green spaces, parks and other fields for cooperative power distribution and lighting.
The box-type substa- tion, which is a complete set of equipment pre-assembled in factory and qualified in factory test, is composed of the buried transformer, the advertising light box switchgear and the prefabricated pit. The product is composed of two parts of equipment below the surface and above the surface, the below surface part includes prefabricated(or on-site concrete casting) pit and buried transformer, and the above surface part includes advertising light box type (or traditional) outdoor switchgear and ventilation and heat dissipation channels. The products are suitable for all kinds of power distribution systems in cities, especially for cable underground transformation and other municipal construction power supporting projects.
S□-MD Series Oil-Immersed Transformer
| Rated capacity (KVA) |
Voltage combination | Connection group label | No-load loss(W) | Load loss(W) | No-load current (%) |
Short circuit impedance (%) |
Dimensions | ||||
| High voltage (KV) |
Tapping range |
Low voltage (KV) |
L | W | H | ||||||
| 30 | 6.3 10 |
±2 ×2.5 | 0.4 | Dyn11 Yyn0 |
100 | 600 | 1 | 4 | 1025 | 625 | 995 |
| 50 | 135 | 870 | 0.9 | 1075 | 640 | 1025 | |||||
| 63 | 155 | 1040 | 0.9 | 1125 | 665 | 1065 | |||||
| 80 | 175 | 1250 | 0.8 | 1150 | 675 | 1095 | |||||
| 100 | 205 | 1500 | 0.8 | 1180 | 695 | 1100 | |||||
| 125 | 240 | 1750 | 0.7 | 1200 | 705 | 1110 | |||||
| 160 | 275 | 2100 | 0.7 | 1235 | 725 | 1210 | |||||
| 200 | 330 | 2500 | 0.7 | 1295 | 745 | 1240 | |||||
| 250 | 400 | 2950 | 0.7 | 1365 | 755 | 1260 | |||||
| 315 | 475 | 3500 | 0.7 | 1335 | 755 | 1320 | |||||
| 400 | 570 | 4200 | 0.7 | 1395 | 780 | 1360 | |||||
| 500 | 680 | 5000 | 0.7 | 1465 | 825 | 1440 | |||||
| 630 | 805 | 6000 | 0.6 | 4.5 | 1565 | 845 | 1460 | ||||
| 800 | 980 | 7200 | 0.6 | 1685 | 925 | 1560 | |||||
| 1000 | 1155 | 10000 | 0.6 | 1855 | 1095 | 1670 | |||||
| 1250 | 1365 | 11800 | 0.6 | 1925 | 1195 | 1700 | |||||
| 1600 | 1645 | 14000 | 0.6 | 1995 | 1235 | 1790 | |||||
Operating conditions
1. The maximum operating ambient temperature is+50℃ under natural ventilation,+40℃ under forced ventilation,+40℃ whenthe underground water depth does not exceed 1.5m,+45℃ when thunderground water depth exceeds 1.5m.
2. Altitude:No more than 1000m.
3. The power supply voltage's wave is similar to sine wave.
4. Three-phase power supply voltage is approximately symmetrical.
5. The total harmonic content of load current shall not exceed 5% of rated current.
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: |
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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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