Product Description



Oil Immersed Series Transformer:
The S11-M series fully sealed oil immersed power transformer by Chaotai Power is an epitome of engineering excellence, boasting low loss, ultra-quiet operation, and outstanding efficiency. This marvel of design ensures substantial energy savings and minimizes environmental impact. Unlike typical transformers, this innovative model eliminates the oil conservator, with oil volume fluctuations adeptly managed by the flexible corrugated oil tank. This isolation from air not only curtails oil deterioration and insulation aging but also significantly boosts operational reliability while negating the need for routine maintenance.
1. Power Capacity: 25-2500KVA, with options for 24KV, 30KV, 33KV, 35KV, 36KV, and custom specifications. 2. Voltage Level: Choose from 10KV, 11KV, 13.8KV, 15KV, 17.5KV, 20KV, 22KV. 3. Type of Voltage Regulation: Options include Off-circuit or On-load.
4. Tapping Range: Versatile options of ±5%, ±2x2.5%, and ±4x2.5%
5. Frequency: Available in 50Hz or 60Hz
6. Phases: Available in Three or Single Phase options
7. Connection Symbol: Standard configurations are Dyn11, Yyn0, or customized as requested
8. Short-circuit Impedance: Designed with Standard Impedance
9. Altitude is not exceeding 1000m, with ambient temperature restrictions not exceeding 40°C. If these conditions are not met, adjustments will be made in line with the standards.
If deviations from the standard conditions occur, parameter modifications will be executed in accordance with industry standards.
Power Capacity: Ranges from 25-2500KVA
Voltage Options: 10KV, 11KV, 13.8KV, 15KV, 17.5KV, 20KV, 22KV, 24KV, 30KV, 33KV, 35KV, 36KV
Voltage Level Options:
Type of Voltage Regulation: Choose between Off-circuit or On-load
Tapping Range: Configurations include ±5%, ±2x2.5%, and ±4x2.5%
Frequency: Compatible with 50Hz or 60Hz
Phases: Available in Three or Single Phase
Connection Symbol: Standard choices include Dyn11, Yyn0, or per request
Short-circuit Impedance: Conforms to Standard Impedance
Altitude: Required to not exceed 1000m, and ambient temperature must not exceed 40°C
Should these conditions not be met, we will adjust the parameters to align with standard specifications.
The fully sealed oil immersed power transformer from Chaotai Power exemplifies the benefits of low loss, reduced noise, and heightened efficiency, delivering impressive energy savings and lessening environmental impact.
This advanced transformer, by abolishing the oil conservator, intelligently adapts oil volume changes through the corrugated oil tank's elasticity. It remains air-isolated, thus significantly decelerating oil and insulation degradation, enhancing reliability and eliminating the need for maintenance during regular operation.
Product Parameters
Oil immersed transformer product parameters |
Rated capacity kVA |
Voltage combination |
NO-load loss W |
Load loss W |
No-load current% |
Short-circuit |
HV (KV ) |
HV tapping range |
LV (KV) |
Connection symbol |
Impedance |
30 |
6.3kV
10.5kV
11kV
13.2kV
13.8kV
15kV |
±2
× 2.5%;
Or ±5% |
0.4 |
Dyn11 or Yyn0 |
90 |
660 |
2.1 |
5.5 |
50 |
130 |
960 |
2 |
63 |
150 |
1145 |
1.9 |
80 |
180 |
1370 |
1.8 |
100 |
200 |
1650 |
1.6 |
125 |
240 |
1980 |
1.5 |
160 |
290 |
2420 |
1.4 |
200 |
330 |
2860 |
1.3 |
250 |
400 |
3350 |
1.2 |
315 |
480 |
4010 |
1.1 |
400 |
570 |
4730 |
1 |
500 |
680 |
5660 |
1 |
630 |
810 |
6820 |
0.9 |
6 |
800 |
980 |
8250 |
0.8 |
1000 |
1150 |
11300 |
0.7 |
1250 |
1350 |
13200 |
0.7 |
1600 |
1630 |
15950 |
0.6 |
2000 |
1950 |
19140 |
0.6 |
2500 |
2340 |
22200 |
0.6 |
Main product
Company Profile

Zhejiang ChaoTai Complete Equipment Co., Ltd. is a pioneering high-tech enterprise revolutionizing electrical integration. With a relentless pursuit of excellence, we boast a seasoned team of R&D, production, and service experts, backed by over 15 years of invaluable industry experience.
Our esteemed suite of products encompasses high-voltage solid-state soft starters, capacitor cabinets, versatile high and low voltage switchgear, cutting-edge gas-insulated switchgear, and state-of-the-art substations. These products are making significant impacts across diverse domains such as energy, chemical industries, metal smelting, electric power grids, industrial manufacturing, academia, the medical and pharmaceutical sectors, municipal commerce, water conservancy and hydropower, road traffic, as well as commercial and residential spheres.
We are dedicated to technological innovation, embracing a development philosophy rooted in 'smart manufacturing.' Our strategic initiative involves drawing in top-tier technical talent to fortify our core competencies, ensuring we provide unparalleled value to our customers while aspiring to establish ourselves as the industry's leading brand. Since inception, we have embarked on a journey marked by milestones, transforming from humble beginnings to a benchmark of excellence. Our commitment to innovation is unwavering, and we adhere to a modern business ethos: achieving survival through superior quality, navigating the market with savvy, growing through an impeccable reputation, and driving efficiency through competent management. Upholding 'technology as our beacon, standardized management, stellar quality, and absolute customer satisfaction' as our guiding principles, we enhance our market competitiveness and fervently serve the power transmission and distribution sectors of China’s electric power grid with ambitious objectives. At our core, integrity is indispensable, quality is paramount, service is unparalleled, and customer satisfaction is our perpetual aim. Striving for excellence, fostering continuous innovation, and establishing a brand of trust are our steadfast development aspirations. Your recognition fuels our passion. We extend heartfelt gratitude to all our new and loyal customers for their unwavering support and affection, as Senhang Technology eagerly anticipates collaborating with you to forge a brighter future together.
Our Advantages
Certifications
After Sales Service


FAQ
Q1. Are you a factory or trading company?
A.We are a factory.
Q2. Where is your factory located? How can I visit there?
A. Our factory is located in Wenzhou City, Zhejiang Province, China. You can fly to Longwan airport directly. All our clients,from home or abroad, are warmly welcome to visit us!
Q3. What's the payment term?
A. We accept TT. 30% deposit and 70% before shipment, Western Union, L/C At Sight is ok! We'll l show you the photos of the products and packages before you pay the balance.
Q4. Tell me the standard of package? What is your terms of packing?
A: Generally, we pack our goods in neutral white boxes and brown cartons, If vou have leaallyl registered patent, we can pack the goods in your branded boxes after getting your authorization letters.
Q5. Would you accept to use our logo?
A. If you have good quantity,it absolute no problem to do OEM.
Q6. How about the transport?
A. If the number of aoods is small we usually use TNT.DHL.FEDEX.EMS and some express voull offered. If the number of the goods is big usually we use the FWD you offered or we provided. Either by sea or by air is OK.
Q7. What is your Production lead time /delivery time?
A: Generally, it will take 25 to 30 days after receivina vour advance payment.
The specificl delivery time depends on the items and the quantity of your order. Silicone rubber's reqular product is 1,000/ week, Porcelain's need 2-3 weeks about 1000 pcs.
Q8. How do you make our business long-term and good relationship?
A:l. We keep aood auality and competitive price to ensure our customers benefit:
A: 2. We respect every customer as our friend and we sincerely do business and make friendsl with them, no matter where they come from.
A: 3.Most goods we have the type report according the IEC STANDARD
Q9. What is your sample policy?
A: We can supply the sample if we have ready parts in stock, but the customers have to pay the courier cost.
Q10. Can you produce according to the samples?
A: Yes, we can produce by your samples or technical drawings. We can build the molds and fixtures.
Q11. What is your terms of delivery?
A: EXW, FOB, CFR, CIF.
Q12.What certificates do you have?
A:ISO9001,OHSAS18001,ISO14001 certificate and Type test report of product.