Product Description



Oil Immersed Series Transformer:
Introducing the remarkable S11-M series, a top-tier fully sealed oil-immersed power transformer meticulously crafted by Zhejiang Chaotai Complete Equipment Co., Ltd. This innovative transformer boasts outstanding features such as minimal energy consumption, whisper-quiet operation, and incredible efficiency. As an exemplary energy solution, it significantly reduces environmental pollution. Unlike traditional oil-immersed models, this advanced design eliminates the need for an oil conservator. Its intelligent build autonomously adapts to oil volume variations through the flexible corrugated oil tank, effectively sealing the transformer from air exposure. This cutting-edge feature prevents oil degradation, slows insulation aging, and remarkably enhances operational reliability, while completely removing the necessity of maintenance during regular operations.
1. Power Capacity: Ranges from 25-2500KVA, with options available at 24KV, 30KV, 33KV, 35KV, 36KV, and fully customizable to suit customer requirements 2. Voltage Level: Offered at 10KV, 11KV, 13.8KV, 15KV, 17.5KV, 20KV, 22KV 3. Type of Voltage Regulation: Available in both Off-circuit or On-load variations
4. Tapping Range: Configurable at ±5%, 2x2.5%, or ±4x2.5%
5. Frequency: Features options for either 50Hz or 60Hz
6. Phases: Available in both Three-phase or single-phase configurations
7. Connection Symbol: Offered as Dyn11, Yyn0, with customized options available as needed
8. Short-circuit Impedance: Equipped with Standard Impedance design
9. Operational Conditions: Suitable for altitudes not exceeding 1000m and ambient temperatures below 40°C. If these conditions are not met, adjustments in parameters will follow standard industry protocols.
All necessary adjustments will strictly adhere to industry standards.
Power Capacity: Spanning from 25-2500KVA
Voltage Levels: Available across 10KV, 11KV, 13.8KV, 20KV, 22KV, 30KV, 33KV, 35KV, 36KV
Voltage Level Overview:
Type of Voltage Regulation: Offered in Off-circuit or On-load options
Tapping Range: Offered at options of ±5%, ±2x2.5%, ±4x2.5%
Frequency Options: Available in modes of 50Hz or 60Hz
Phases: Available in options including Three-phase or single-phase
Connection Symbol: Configurable as Dyn11, Yyn0, with customization available upon request
Short-circuit Impedance: Engineered with Standard Impedance design
Operational Conditions: Designed for altitudes not exceeding 1000m, with ambient temperatures not surpassing 40°C
In instances where conditions differ, necessary parameter adjustments will be performed in adherence to standard guidelines.
This fully sealed oil-immersed power transformer, a triumph of innovation from Chaotai Power, is engineered for low energy loss, whisper-quiet operation, and unparalleled efficiency. It serves as a leading energy-saving solution, markedly reducing pollution.
In contrast to conventional oil-immersed transformers, this fully sealed design omits the oil conservator. It effectively manages oil volume variations through the elasticity of the corrugated oil tank sheet, ensuring the transformer remains air-isolated. This vital feature not only prevents oil degradation and insulation aging but also significantly enhances reliability and eliminates 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. shines as a beacon of cutting-edge technology and innovation in the realm of electrical integration. As a renowned high-tech enterprise, our company is distinguished by our dedicated R&D, production, and service teams, all backed by an impressive legacy of over 15 years of invaluable industry expertise. Our unwavering commitment to excellence underscores our position as a leader in innovation, consistently setting benchmarks in the industry.
At Zhejiang Chaotai Complete Equipment Co., Ltd., our diverse and advanced product portfolio hosts pioneering solutions, including high-voltage solid-state soft starters, capacitor cabinets, high and low voltage switchgear, gas-insulated switchgear, and substations. Each of these critical products plays an indispensable role across a vast array of industries. From the dynamic energy and chemical sectors to the robust fields of metal smelting, electric power grids, and industrial manufacturing, our innovative solutions are the backbone of numerous operations. Our influence extends beyond to academia, healthcare, municipal commerce, water management, hydropower, and road traffic, impacting both commercial and residential applications. Proudly, we empower the future through our transformative solutions, leaving an indelible mark across these essential sectors.
Rooted in a philosophy of relentless technological advancement and 'smart manufacturing,' Zhejiang Chaotai Complete Equipment Co., Ltd. is committed to nurturing a culture of excellence by integrating top-tier technical talents and innovative strategies. This strategic commitment enhances our core competencies, ensuring that we provide unparalleled service value to our clients. Our growth journey reflects our core values; it showcases our evolution from humble beginnings to industry leadership through unwavering dedication and innovation. Our business strategy steadfastly prioritizes quality as the foundation of survival, cultivates market reputation as the path to development, and champions management efficiency as the key to profitability. Our pledge is to harness 'technology as the guide, standardized management, superior quality, and customer satisfaction' as the pillars of our quality and talent management initiatives. Our strategic vision focuses on amplifying our market competitiveness, serving China's electric power and grid transmission and distribution sectors with aspirations that aim higher, reach further, and achieve more. Integrity, unmatched quality, exceptional service, and customer satisfaction are at the heart of our values. Our relentless pursuit of excellence drives us to perpetually innovate, establishing our brand as synonymous with trust. The acknowledgment of our valued customers propels our ambition. We extend heartfelt gratitude to our loyal customers, both new and longstanding, and warmly invite you to join Zhejiang Chaotai on a shared journey towards a brighter tomorrow.
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.