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


 
The S11 fully sealed oil-immersed power transformer developed and produced by our company has the advantages of low loss, low noise, and high efficiency, which can achieve good energy-saving effects and reduce pollution.

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.
 
The transformer is isolated from the air, preventing and slowing down the deterioration of oil and insulation aging, enhancing operational reliability, and making normal operation maintenance-free.

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
 Oil-Immersed Transformer
100kVA/10/0.4kv Oil-Immersed Three-Phase Step-Down Transformer
 Oil-Immersed Transformer

100kVA/10/0.4kv Oil-Immersed Three-Phase Step-Down Transformer Technical Parameter

Model Rated Capacity
(kVA)
Connection Group Number Voltage Combination(kV) No-load Loss
(W)
Load Loss(W) No-load Current
(%)
Short Circuit Impedance
(%)
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

100kVA/10/0.4kv Oil-Immersed Three-Phase Step-Down Transformer

 

STRUCTURAL COMPOSITION
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.
 
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.
 
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.
 
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.
 

 

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


 

Transformer Test equipment
Test equipment
Transformer Test equipment2
Test equipment

 

Oil transformation workshop
Oil transformation workshop
Dry transformation workshop
Dry transformation workshop

 

Transformer Intelligent automatic bending machine
Intelligent automatic bending machine
Transformer Cnc punch press
Cnc punch press

 

Transformer Intelligent laser cutting machine
Intelligent laser cutting machine
Transformer Welding robot
Welding robot

 

Transformer Fully automatic laminating unit
Fully automatic laminating unit
Transformer Fully automatic laminating unit2
Fully automatic laminating unit

 

Transformer Wire winding unit
Wire winding unit
Transformer Wire winding unit2
Wire winding unit
Transformer Wire winding unit3
Wire winding unit

 

 

 

 

types of transformer from GNEE


 

500kV oil-immersed single-phase double-winding unexcited voltage regulating power transformer

500kV oil-immersed three-phase double-winding unexcited voltage regulating power transformer
330kV oil-immersed three-phase double-winding unexcited voltage regulating power transformer
330kV oil-immersed three-phase three-winding unexcited voltage regulating power transformer
220kV oil-immersed three-phase double-winding unexcited voltage regulating power transformer
220kV oil-immersed three-phase three-winding unexcited voltage regulating power transformer
220kV oil-immersed three-phase double-winding on-load voltage regulating power transformer
220kV oil-immersed three-phase three-winding on-load voltage regulating power transformer
110kV oil-immersed three-phase double-winding unexcited voltage regulating power transformer
110kV oil-immersed three-phase three-winding unexcited voltage regulating power transformer
110kV oil-immersed three-phase double-winding on-load voltage regulating power transformer
110kV oil-immersed three-phase three-winding on-load voltage regulating power transformer
66kV oil-immersed three-phase double-winding unexcited voltage regulating power transformer
66kV oil-immersed three-phase double-winding on-load voltage regulating power transformer
35kV oil-immersed three-phase double-winding unexcited voltage regulating power transformer
35kV oil-immersed three-phase double-winding on-load voltage regulating power transformer
10kV oil-immersed three-phase double-winding unexcited voltage regulating power transformer
10kV oil-immersed three-phase double-winding on-load voltage regulating power transformer
S(B)H15(21~25)-M sealed amorphous alloy power transformer
SCB three-dimensional core transformer
35kV dry-type non-excitation voltage regulating power transformer
35kV dry-type on-load voltage regulating power transformer
35kV dry-type three-phase double-winding transformer for photovoltaic, wind power and energy storage on the new energy power generation side without excitation voltage regulation
20kV dry-type non-excitation voltage regulating distribution transformer
10kV dry-type three-phase double-winding non-excitation voltage regulating distribution transformer
10kV dry-type three-phase double-winding transformer for photovoltaic, wind power and energy storage on the new energy power generation side
SC(B)H15(17~19) amorphous alloy dry type transformer
SG(B)12~18 non-encapsulated H-class dry type transformer
CSD marine transformer
SGB three-dimensional core transformer
New energy transformer
35kV oil-immersed three-phase double-winding non-exciting voltage regulation new energy generation side for photovoltaic, wind power, energy storage transformers
10kV oil-immersed three-phase double-winding non-exciting voltage regulation new energy generation side for photovoltaic, wind power, energy storage transformers
Prefabricated cabin substation
Integrated inverter and step-up converter
10000V mine transformer
6000V mine transformer
Buried transformer
Phase-shifting rectifier transformer
Electric furnace transformer
Grounding transformer
QSG/SG three-phase dry isolation transformer
Three-phase pad-mounted transformer
Single-phase pad-mounted transformer
Single-phase pole-mounted transformer

Get Transformer Order specification

GNEE Transformer Order specification

When choosing our company's products, please provide the following data to better serve you.

Demander

Demander:

Telephonemethods:

Fax:

Project technical leader:

Telephonemethods:

Mailbox:

Transformer type selection

□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}

Transformer basic data selection

Country of use:

 

Phase number:

□Three-phase(S conventional) □ Monophase □Other( )

Frequency:

□50Hz(conventional) □60Hz □ Other( )

Transformer oil:

□#25(conventional) □#45(minimum temperature below-25℃)

Rated capacity:

□( )kVA Conditions of use □Outdoor type □Indoor type

Altitude:

□Less than 1000m(conventional) □1000-2000m □3000m以上 over

Rated voltage(High voltage)

□6kV □10kV □20kV □35kV □66kV □110kV □220kV □Other( )

Rated voltage(Low pressure)

□0.4kV □0.66kV □10kV □10.5kV □35kV □其他 Other( )

Connected group

□Dyn11(conventional) □Yyn0 □YNd11 □li0(Single-phase) □Other( )

Impedance(%):

□4% □4.5% □5.5% □6% □6.5% □7.5% □8% □Other( )

Voltage regulation mode

□Voltage regulation without excitation(conventional) □On-load voltage regulation(Z)

Voltage regulation range

□±2*2.5% □±5% □±3*2.5% □Other( )

Transformer accessory selection

□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]}

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)

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

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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