S11-2500KVA oil-immersed power transformer

Nov 07, 2025

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The description of S11-2500KVA oil-immersed power transformer

 

S11-2500KVA oil-immersed power transformers are developed by GNEE. The authoritative analysis and optimization of S11-2500KVA oil-immersed power transformers from raw materials and processes have made our transformers lower noise, lower loss, lower voltage drop, and higher efficiency than the other companies. This series of products are suitable for circuits of AC 50HZ60HZ and voltage below 660V that are widely used in imported precision machinery and equipment, multi-axis automatic beds, spring machinery, injection molding machinery, mechanical and electronic equipment, medical equipment, rectifiers, lighting, etc.

 

S11-2500KVA oil-immersed power transformer

 

 

2500KVA oil-immersed transformer Technical Specifications

 

Rated Power 2500 kVA
Rating Primary Voltage 2.4 - 34.5kV
Secondary Voltage 480/277V
400/230V
380/220V
Customized
Frequency 50/60Hz
Vector Group Dyn11, Yyn0, Dyn5
Winding Material Aluminum/Copper
Efficiency As IEEE, Doe 2016, CAS Std or Customized
Impedance Voltage Nominal 2% or Customized 1.1 - 5.75%
Altitude ≤1,000m or Customized
Color ANSI 70 Light gray/Munsell 7GY3.29/1.5 or customized, etc
Tank material Mild Steel, 304 Stainless Steel
Insulating Oil Weight 850 kg
Total Weight 5000 kg
Outline Dimensions(L×W×H)in. 2650 × 1650 × 2450(mm)

 

 

The advantages of S11-2500KVA oil-filled transformer

 

1.S11-2500KVA oil-immersed power transformers has beautiful appearance, small size, light weight, high efficiency, long service life, convenient installation and transportation.S11-2500KVA oil-immersed power transformers slove the problems of large volume, heavy weight and low efficiency of traditional coil transformers.

 

2.S11-2500KVA oil-immersed power transformers has good heat dissipation, no noise, strong anti-interference, good electromagnetic compatibility.

 

3.S11-2500KVA oil-immersed power transformers are equipped with overload, overcurrent, overvoltage, overheating, lightning protection and other protection, strong load capacity.

 

4.S11-2500KVA oil-immersed power transformers has good voltage stabilization performance and the use efficiency of 99.8%;

 

5. S11-2500KVA oil-immersed power transformers uses imported modules from Japan, the United States, Germany, and many other countries. No matter how large the power is, no fan is required for heat dissipation.

 

6. S11-2500KVA oil-immersed power transformers are tested strictly and aging after full load.

 

7. S11-2500KVA oil-immersed power transformers adopts all-aluminum alloy shell, aviation plug or terminal block input and output that easy to disassemble and free to install. The core module adopts imported power devices which are used for life-long package.

 

 

The suitable places of S11-2500KVA oil-filled transformer

 

S11-2500KVA oil-immersed power transformers are widely used in import and export equipment, subways, high-rise buildings, airports, stations, printing, machine tools, terminals, industrial and mining enterprises and tunnels, power transmission and distribution equipment and other places of use. Due to different local voltages, the places where the voltage must be converted are tailored for electrical machinery and equipment.

 

 

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, Pakistan, Indonesia, Vietnam, Mongolia, Japan, Taiwan Province, Bangladesh, Sri Lanka, Lebanon, Saudi Arabia, Turkey, Armenia, Saudi Arabia, Saudi Arabia, 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, Mexico, Uruguay, Chile

 

Middle East: The Middle East region

 

Oceania: Australia, Papua New Guinea. Fiji

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