100Kva 3 Phase Step Down Oil Type Transformer
Oct 29, 2025
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100Kva 3 Phase Oil Type Transformer Introduction


100Kva 3 Phase Oil filled Transformer safety guidelines:
1.Regularly inspect the 100 kVA 3 phase step down distribution transformer's exterior for oil leakage and check for any signs of components emitting smoke or discharging. If the oil level in the transformer drops too low, it may lose its insulation protection, leading to discharge between internal components or from the transformer to the outer casing, potentially resulting in severe damage or even transformer failure.
2.Avoid installing low-voltage metering boxes on the 100 kVA 3 phase step down distribution transformer. Over prolonged operation, damage to the meter's glass or the low-voltage terminal of the transformer may not be promptly replaced, which could lead to damage to the distribution transformer due to factors like rainwater seeping into the electrical meter.
3.Periodically monitor The 100 kVA 3 phase step down distribution transformer oil temperature, especially during severe weather conditions with significant temperature variations. The top oil temperature in oil-immersed transformers should not exceed 95°C during operation. To prevent excessive heating and premature oil degradation, the temperature rise of the top oil should not exceed 45°C.
4.Regularly inspect and replace primary and secondary fuses, strictly avoiding the use of aluminum wire as a substitute for fuses. Primary fuses protect the system, while secondary fuses protect the 100 kVA 3 phase step down distribution transformer. The selection of fuses should be in line with the transformer's rated capacity.
5.Install high and low-voltage insulation covers in narrow road areas or forest regions where animals frequently enter and exit. This prevents foreign objects from falling onto the low-voltage terminals of distribution transformers, which could lead to short circuits and transformer damage.
Please note that safety guidelines may vary by location and regulations, so it's essential to adhere to local safety standards and practices.
100Kva 3 Phase Step Down Oil Type Transformer Technical Data:
| Mode: | S11-M-100 or depends; |
| Rated Capacity: | 100 kVA; |
| Basic Insulation Level: | 200kV/85kV(LI/AC); |
| No Loading Loss: | 235 卤 10% W; |
| Loading Loss: | 1920 卤 10% W; |
| Impedance: | 6.0%卤 10%; |
| Vector Group: | Yyn0; |
| Winding Material: | 100% Copper or 100% Aluminum; |
| Cooling System: | ONAN for Oil filed, AN/AF for epoxy resin; |
| Temperature Rise: | To Adhere IEC 60076 or Client Requirements; |
100Kva 3 Phase Oil Type Transformer applications
- Residential and suburban areas: Used for overhead distribution to supply power to homes and small communities.
- Commercial buildings: Powers commercial centers, shops, and offices.
- Industrial applications: Distributes power within industrial plants and factories.
- Agriculture: Used for power distribution on farms.
- Light industrial facilities: Suitable for the needs of smaller industrial operations.
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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GNEE Transformer Order specification
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Demander: |
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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

