Product Description



Oil Immersed Series Transformer:
Introducing the extraordinary S11-M series, a fully sealed oil-immersed power transformer meticulously crafted by Zhejiang Chaotai Complete Equipment Co., Ltd. This distinguished transformer boasts unmatched attributes of minimal energy consumption, whisper-quiet operation, and outstanding efficiency, positioning it as a superior energy solution that significantly diminishes environmental impact. Unlike traditional oil-immersed models, this innovative design eliminates the need for an oil conservator. Its intelligent architecture autonomously accommodates oil volume fluctuations through the flexibility of the corrugated oil tank, effectively isolating the transformer from air exposure. This cutting-edge feature prevents oil degradation, slows insulation aging, and dramatically enhances operational reliability, all while eradicating the necessity for maintenance in routine operations.
1. Power Capacity: Spans from 25-2500KVA, with optional configurations for 24KV, 30KV, 33KV, 35KV, and 36KV, customizable to meet customer specifications 2. Voltage Level: Offered at 10KV, 11KV, 13.8KV, 15KV, 17.5KV, 20KV, 22KV 3. Type of Voltage Regulation: Available in Off-circuit or On-load options
4. Tapping Range: Configurable at ±5%, 2x2.5%, or ±4x2.5%
5. Frequency: Choices between 50Hz or 60Hz
6. Phases: Available in Three-phase or single-phase configurations
7. Connection Symbol: Offered as Dyn11, Yyn0, with customization as required
8. Short-circuit Impedance: Engineered with Standard Impedance
9. Operational Conditions: Suitable for altitudes not exceeding 1000m, and ambient temperatures below 40°C. If these conditions are not met, parameter adjustments will follow standard industry protocols.
All necessary adjustments will strictly adhere to industry standards.
Power Capacity: Ranging from 25-2500KVA
Voltage Levels: Ranging from 10KV, 11KV, 13.8KV, 20KV, 22KV, 30KV, 33KV, 35KV, to 36KV
Voltage Level Overview:
Type of Voltage Regulation: Available in Off-circuit or On-load options
Tapping Range: Configurable at ±5%, ±2x2.5%, or ±4x2.5%
Frequency Options: Available at 50Hz or 60Hz
Phases: Options include Three-phase or single-phase
Connection Symbol: Flexible configurations as Dyn11, Yyn0, with customization available upon request
Short-circuit Impedance: Expertly engineered with Standard Impedance
Operational Conditions: Designed for altitudes not exceeding 1000m, and ambient temperatures up to 40°C
If conditions vary, we will administer necessary parameter adjustments in alignment with standard guidelines.
This fully sealed oil-immersed power transformer, a marvel of innovation by Chaotai Power, is engineered for low energy loss, whisper-quiet operation, and exceptional efficiency. It stands as a premier energy-saving solution, significantly minimizing pollution.
Unlike conventional oil-immersed transformers, this fully sealed design eliminates the oil conservator. It skillfully manages oil volume variations with the elasticity of the corrugated oil tank sheet, ensuring the transformer stays isolated from air. This essential feature not only prevents oil degradation and insulation aging but also enhances reliability and eradicates the need for routine maintenance.
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. stands as an illustrious symbol of avant-garde technology and boundless innovation within the sphere of electrical integration. Celebrated as a high-tech enterprise of distinction, our company is marked by its robust R&D, production, and service teams, all deeply rooted in an impressive legacy spanning over 15 years of industry mastery. Our unwavering dedication to excellence solidifies our stature as pioneers of innovation, continually setting industry benchmarks and redefining standards.
Our expansive and sophisticated product portfolio showcases groundbreaking solutions including high-voltage solid-state soft starters, capacitor cabinets, high and low voltage switchgear, gas-insulated switchgear, and substations. Each of these pivotal products is indispensable across a diverse array of sectors, ranging from energy and chemical industries to metal smelting, electric power grids, and industrial manufacturing. Moreover, we extend our transformative influence to educational institutions, the healthcare industry, municipal commerce, water management, hydropower, and road traffic, serving both commercial and residential domains. Empowering the future with our cutting-edge solutions, we make a remarkable impact across these critical sectors, championing sustainable progress and innovation.
Anchored in a philosophy of relentless technological progression and 'smart manufacturing,' we are dedicated to fostering a culture of excellence by integrating premier technical talent and innovative strategies. This strategic commitment amplifies our core competencies, ensuring unparalleled service value for our clientele. Our growth narrative is a testament to our foundational values: evolving from modest origins to industry vanguard through unwavering dedication and groundbreaking innovation. Our business strategy consistently prioritizes quality as the bedrock of survival, leveraging market reputation for development, and harnessing management efficiency for profitability. Our pledge is to champion 'technology as the guide, standardized management, superior quality, and customer satisfaction' as the pillars of our quality and talent management initiatives. Our strategic vision is to elevate our market competitiveness, serving China's electric power and grid transmission and distribution sectors with aspirations that soar higher, reach further, and realize greater achievements. Integrity, peerless quality, exceptional service, and customer satisfaction lie at the core of our values. Our relentless quest for excellence propels us to perpetually innovate, establishing our brand as a beacon of trust. The recognition from our valued customers fuels our ambition. We extend our deepest gratitude to our loyal customers, both new and enduring, and warmly invite you to join Zhejiang Chaotai in a shared journey towards a radiant 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.