Product Description



Oil Immersed Series Transformer:
Introducing the S11-M Series, a fully sealed oil immersed power transformer from Chaotai Power, designed to redefine efficiency and environmental stewardship. This cutting-edge transformer boasts low loss, minimal noise, and exceptional efficiency, delivering an outstanding energy-saving performance that significantly reduces pollution. Unlike conventional oil immersed transformers, the innovative fully sealed design eliminates the need for an oil conservator. The oil volume fluctuations are deftly managed through the flexible corrugated oil tank, ensuring automatic adjustments and compensation. This design keeps the transformer isolated from the air, effectively preventing oil deterioration and insulation aging. The result is enhanced operational reliability, eliminating the need for maintenance during normal operation.
1. Power Capacity: Ranging from 25 to 2500KVA, tailored to customer requirements including voltage levels of 24KV, 30KV, 33KV, 35KV, and 36KV.
4. Tapping Range: Options include ±5%, 2x2.5%, and ±4x2.5% for versatile adaptability.
5. Frequency: Configurable to either 50Hz or 60Hz to suit diverse power grid demands.
6. Phases: Available in both three-phase and single-phase configurations to cater to varying needs.
7. Connection Symbol: Choose between Dyn11 and Yyn0, or customize as per specific requirements.
8. Short-Circuit Impedance: Engineered with standard impedance for optimal performance.
9. Altitude: Designed to operate effectively at altitudes not exceeding 1000m with ambient temperatures up to 40°C. If these conditions are not met, parameter adjustments are available according to standard.
Following the highest industry standards, we ensure optimal performance in diverse environmental conditions.
Power Capacity: Extensive range from 25 to 2500KVA to meet various application needs.
Voltage Levels: Options include 10KV, 11KV, 13.8KV, 15KV, 17.5KV, 20KV, 22KV, 30KV, 33KV, 35KV, and 36KV.
Voltage Level: Tailored to meet specific power demands with precision.
Type of Voltage Regulation: Available in both off-circuit and on-load configurations for flexibility.
Tapping Range: Provides a wide range of adjustability with ±5%, ±2x2.5%, and ±4x2.5%.
Frequency: Compatible with both 50Hz and 60Hz systems to fit various local standards.
Phases: Offers versatility with both three-phase and single-phase options.
Connection Symbol: Flexible configurations with Dyn11, Yyn0, or tailored options as needed.
Short-Circuit Impedance: Built with standard impedance to ensure reliable and efficient operation.
Altitude: Capable of efficient performance at altitudes up to 1000m and temperatures reaching 40°C.
In cases where standard altitude and temperature conditions are not met, parameters are adjusted accordingly to maintain performance excellence.
Our fully sealed oil immersed power transformer from Chaotai Power is engineered for superior efficiency, low noise operation, and reduced environmental impact, making it ideal for energy-saving applications.
This state-of-the-art transformer surpasses traditional models by eliminating the oil conservator, utilizing a corrugated sheet mechanism to automatically adjust oil volume changes. Isolated from air exposure, it significantly curtails oil degradation and insulation aging, ensuring robust reliability and maintenance-free 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 cutting-edge high-tech enterprise, passionately dedicated to the arena of electrical integration. Our elite team, boasting over 15 years of industry expertise, excels in research and development, production, and unmatched customer service, ensuring we stay at the forefront of innovation.
Our distinguished product lineup features high-voltage solid-state soft starters, advanced capacitor cabinets, robust high and low voltage switchgear, sophisticated gas-insulated switchgear, and comprehensive substation solutions. These products play an integral role in diverse sectors, including energy, chemical industries, metal smelting, power grids, industrial manufacturing, academia, healthcare, municipal commerce, water management, road traffic, alongside both commercial and residential domains.
Embracing the philosophy of technological innovation and 'smart manufacturing,' we relentlessly attract top-tier technical talent to elevate our core competencies and deliver unparalleled value to our clientele. Our journey from inception has been one of remarkable growth—transforming from a nascent concept to an industry leader. By prioritizing innovation, we champion a modern business ethos rooted in quality for survival, market focus for growth, reputation for advancement, and effective management for efficiency. Our commitment to technology-led, standardized management underscores our pledge for superior quality and customer satisfaction, bolstering our competitive edge in the market. We strive to set higher benchmarks in China's electric power and grid sectors, cherishing integrity, prioritizing quality, and delivering supreme service, with customer satisfaction as our perpetual mission. Our dedication to excellence, continuous innovation, and brand trustworthiness are the anchors of our development goals. Your trust inspires us, and we are profoundly grateful to our new and loyal customers for their enduring support. Senhang Technology eagerly anticipates collaborating with you for a prosperous future.
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.