+86 18988528466 [email protected]
Three Phase 33kV Oil Immersed Transformer
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Foshan Noah Electrical Co., Ltd can customize power transformers with various voltages. Apply new design and structure and optimize insulation technology, as well as improve the mechanical strength and anti short circuit ability. The core is made of high quality cold rolled silicon steel, with low loss and noise. With fancy appearance, it is easy and reliable operation.

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product information

Foshan Noah Electrcial Co., Ltd can provide customization service for the transformers. Voltage can be customized, like 230V, 380V, 6.6KV 10kV, 11kV, 15kV, 20kV, 33kV, 35kV... ...to 110kV, please just let us know, we can choose the right item for you. If you are looking for good quality with reasonable price transformers, Foshan Noah is definitely your best choice.

S11 Series 33kV 50~2500kVA Oil Immersed Transformer Technical Specification

Rated Power High Voltage(kV) Tapping Range Low Voltage(kV) Vector Group No-load loss (W) Load Loss (75℃) (W) No-load
Current (%)
50kVA 33kV





0.4kV Dyn11



160 1200 1.3 6.5
100kVA 230 2010 1.1
125kVA 270 2370 1.1
160kVA 280 2820 1.0
200kVA 340 3320 1.0
250kVA 400 3950 0.95
315kVA 480 4750 0.95
400kVA 580 5740 0.85
500kVA 680 6910 0.85
630kVA 830 7860 0.65
800kVA 980 9400 0.65
1000kVA 1150 11500 0.65
1250kVA 1400 13900 0.60
1600kVA 1690 16600 0.60
2000kVA 1990 19700 0.55
2500kVA 2360 23200 0.55


Widely used in lighting, machine tool electrical equipment, mechanical and electronic equipment, medical equipment, rectifier device, military, aerospace, etc. Product performance can meet the user's various special requirements. Mainstream products involve power quality, power conversion, instrumentation, radio and television communication, transportation, renewable energy, industrial manufacturing, environmental hygiene, medical security, plasma applications and other industries.

Product advantages

● The core applies good quality cold rolled grain oriented silicon steel sheet.The surface of the core have specific core protecting coating to reduce the loss and noise.
● Use new oil channel structure, high thermal efficiency to reduce the temperature rise and extend the service life of the transformer.
● The tank is fully sealed with corrugated oil tank to prevent air, water and transformer contact, reduce the aging degree of oil, prolong the service life of transformer. Through the elastic deformation of corrugated sheet to adjust the volume change of thermal expansion and cold contraction of the transformer oil.
● Our transformer has pressure relief device to protect the transformer, when faulty high pressure occurs, it can safely and reliably prevent the expansion of the incident.

Project Cases

Our Service

● Listen carefully and clearly to customer specific requirements for products. For some customers at the beginning, they are not clear what exactly they are looking for, we will recommend the items after we learn the necessary core parameters from the client and provide them detailed parameters, pictures and other product information to ensure that products fully meet the requirements.

● Our products can be customized, and the MOQ is one unit. Please just let us know the details of the item you need.

● We have professional QC team to make 100% inspection before the delivery.

● Within the period of guarantee, if there are quality problems caused by manufacturing, we will take responsibility. If the quality problem is caused by other reasons, our company will actively assist to deal with, provide necessary technical support, solve the problem for customers, with the fastest speed to minimize the loss caused by the accident.

● Assist customers to install and debug major equipment and provide on-site technical services, send personnel to the site if necessary, until the equipment is put into operation safely.

● Within the guarantee period stipulated in the contract, if the product is damaged or faulty due to defects in design, manufacturing or materials, our company guarantees to provide timely solutions to customers upon receipt of notice.

● Strictly fulfill the relevant terms of the contract, and constantly improve the quality of service.

High Quality

Passed ISO9001:2015, CE,TUV, type test reports, certificates of patent,etc.

Our Advantage

● We have more than 14 years transformer manufacturing and exporting experience.

● We make the transformer of high quality raw materials, and the price is reasonable.

● We have the best transformer designing, producing, selling and quality control team in a bid to offer you the best product and service.

● We accept OEM/ODM order and can customize the accurate item the customer need.

● We want to build up a long term business relationship with you, so we will try our best to make everything perfect for you.

All prototype products have to go through 4 checks in the whole process:

1. Raw material inspection

2. In processing inspection

3. Final inspection

4. Outgoing inspection

Production Equipment

Test Equipment


Q1. Can I use my company’s logo?

A1. Sure, we can offer OEM/ODM service.

Q2. What is the MOQ?

A2. MOQ=1 unit

Q3. What is the delivery time?

A3. It depends on the order quantity. Usually it takes about 15-20 days to make the customized item with small quantity.

Q4. What is the packing material?

A4. Plywood box.

Q5. Do you have export experience?

A5. Sure. Our main markets are South Asia, Africa, Europe, South America and etc. Welcome to be our agent in your country.

Q6. What kind of certificate do you have?

A6. We have ISO9001:2015, CE,TUV, type test reports, certificates of patent,etc.

Send your message to us:
  • +86 18988528466 / +86 757 82810267

  • [email protected]

  •  Fenjiangbei Road No.91 Foshan, Chancheng Guangdong China

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  • FSNOAH 09:14.AM  Aug.04,2022
    Please note that from the year 2020 on, our company's original logo NORYA will be changed to FSNOAH.