100kVA/10/0.4kv Oil Type Three-Phase Step-Down Transformer
Oct 29, 2025
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100kVA/10/0.4kv Oil-Immersed Transformer Introduction
Compared with ordinary oil-immersed transformers, the fully sealed transformer eliminates the oil storage cabinet. The change in oil volume is automatically adjusted and compensated by the elasticity of the corrugated sheet of the corrugated oil tank.
Energy-saving, environmentally friendly, safe, and reliable
Your trusted choice of Ideal power distribution equipment for urban and rural power distribution network centers


100kVA/10/0.4kv Oil-Immersed Three-Phase Step-Down Transformer Technical Parameter |
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| Model | Rated Capacity (kVA) |
Connection Group Number | Voltage Combination(kV) | No-load Loss (W) |
Load Loss(W) | No-load Current (%) |
Short Circuit Impedance (%) |
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| High voltage | Tap range | Low Voltage | Dy | Yy | ||||||
| S11-M-30 | 30 | Yyn0 or Dyn11 |
6 6.3 10 10.5 11 |
±5% or ±2×2.5% |
0.4 | 100 | 630 | 600 | 1.5 | 4 |
| S11-M-50 | 50 | 130 | 910 | 870 | 1.3 | 4 | ||||
| S11-M-63 | 63 | 150 | 1090 | 1040 | 1.2 | 4 | ||||
| S11-M-80 | 80 | 180 | 1310 | 1250 | 1.2 | 4 | ||||
| S11-M-100 | 100 | 200 | 1580 | 1500 | 1.1 | 4 | ||||
| S11-M-125 | 125 | 240 | 1890 | 1800 | 1.1 | 4 | ||||
| S11-M-160 | 160 | 280 | 2310 | 2200 | 1 | 4 | ||||
| S11-M-200 | 200 | 340 | 2730 | 2600 | 1 | 4 | ||||
| S11-M-250 | 250 | 400 | 3200 | 3050 | 0.9 | 4 | ||||
| S11-M-315 | 315 | 480 | 3830 | 3650 | 0.9 | 4 | ||||
| S11-M-400 | 400 | 570 | 4520 | 4300 | 0.8 | 4 | ||||
| S11-M-500 | 500 | 680 | 5410 | 5150 | 0.8 | 4 | ||||
| S11-M-630 | 630 | 810 | 6200 | 6200 | 0.6 | 4.5 | ||||
| S11-M-800 | 800 | 980 | 7500 | 7500 | 0.6 | 4.5 | ||||
| S11-M-1000 | 1000 | 1150 | 10300 | 10300 | 0.6 | 4.5 | ||||
| S11-M-1250 | 1250 | 1360 | 12000 | 12000 | 0.5 | 4.5 | ||||
| S11-M-1600 | 1600 | 1640 | 14500 | 14500 | 0.5 | 4.5 | ||||
| S11-M-2000 | 2000 | 1940 | 18300 | 18300 | 0.4 | 5 | ||||
| S11-M-2500 | 2500 | 2290 | 21200 | 21200 | 0.4 | 5 | ||||

The low-voltage winding of the oil-immersed transformer adopts copper foil winding or layer structure; the high-voltage winding adopts a multi-layer cylindrical structure, with balanced ampere-turn distribution, small magnetic leakage, high mechanical strength, and strong short-circuit resistance.
The iron core is made of high-quality, high-magnetic silicon steel sheets and adopts a full-slant step-joint stacking machine type. The process is advanced, with low no-load loss and low noise.
The iron core is made of high-quality, high-magnetic silicon steel sheets and adopts a full-slant step-joint stacking machine type. The process is advanced, with low no-load loss and low noise.INSULATION PERFORMANCE
The coil and the iron core are vacuum-dried, and the transformer adopts the vacuum oil injection process, which makes the insulation strength of the oil-immersed transformer higher and the electrical strength higher.
The coil and the iron core are vacuum-dried, and the transformer adopts the vacuum oil injection process, which makes the insulation strength of the oil-immersed transformer higher and the electrical strength higher.
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.
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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: |
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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

