160kVA Oil-Immersed Three-Phase Transformer
Oct 31, 2025
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On load tap changer transformer plays an important role in power system.It can not only stabilize the load center voltage, but also connect the power grid, adjust load current, improve reactive power distribution etc.Its basic principle is to lead out several taps from the coil on one side of the transformer, and switch from one tap to another through OLTC, without cutting off the load current.So as to change the effective number of turns and achieve the purpose of voltage regulation.
On load voltage regulation technology of transformer is widely used in distribution system, and also in step-up transformer of power plant. At present, almost all the large capacity transformers in the power system adopt on load voltage regulators,It is also equipped with a perfect low-voltage distribution network structure and sufficient reactive power compensation capacity to ensure the safe operation of the power grid and meet the requirements of customers for power quality.
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S11/13/20/22 Oil-immersed power transformer |
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Capacity (KVA) |
Voltage Ratio |
Vector Group |
LWA |
No Load Loss (W) |
Load Loss At 75℃ (W) |
No Load Current (%) |
Impedance 75℃ (%) |
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High Voltage (KV) |
HV Tapping % |
Low Voltage (KV) |
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100 |
6 |
±2×2.5% or +3/-1×2.5% |
0.4 |
Dyn11 |
52 |
75 |
1500 |
1 |
4 |
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125 |
54 |
85 |
1800 |
0.9 |
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160 |
100 |
2200 |
0.7 |
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200 |
56 |
120 |
2600 |
0.7 |
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250 |
140 |
3050 |
0.7 |
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315 |
58 |
170 |
3650 |
0.7 |
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400 |
200 |
4300 |
0.5 |
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500 |
60 |
240 |
5150 |
0.5 |
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630 |
320 |
6200 |
0.3 |
4.5 |
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800 |
62 |
380 |
7500 |
0.3 |
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1000 |
450 |
10300 |
0.3 |
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1250 |
65 |
530 |
12000 |
0.2 |
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1600 |
630 |
14500 |
0.2 |
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2000 |
67 |
750 |
17400 |
0.2 |
5 |
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2500 |
900 |
20200 |
0.2 |
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Three-Phase Oil-Immersed Transformer Product features
1.No load voltage regulating transformer need to adjust the tap of high-voltage side only when the power is cut off,so as to change the ratio of the transformer to regulate the voltage at the low-voltage side.Its regulation range is small, generally within ± 5%, It can only be adjusted once or twice a year.Most transformers in power system are no-load tap transformers.
2.The on load tap changing transformer has a special switch, which can change the tap position without power off (with load).Its voltage regulation range is large, generally more than 15% or even up to 30%, and it can be adjusted automatically for several times a day.
3.No excitation voltage regulation refers to no-load voltage regulation,which can be adjusted only when the transformer is off.On load tap chaning transformer can change the voltage by changing the tap position when it is on running.
4.OLTC switch has the advantages of frequent on-off, no spark and long service life.The traditional trigger circuit of power electronic switch has the
problem of electrical isolation.The application of optical fiber communication technology to the medium and high voltage trigger control system
can effectively solve the problem of high and low voltage electrical isolation.
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: |
Telephonemethods: |
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, 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