Product Description



Oil Immersed Series Transformer:
Introducing the exceptional S11-M series from Zhejiang Chaotai Complete Equipment Co., Ltd., a fully sealed oil-immersed power transformer showcasing cutting-edge engineering. This remarkable transformer distinguishes itself with its minimal energy consumption, whisper-quiet operational noise, and superior efficiency. As a leading energy solution, it significantly reduces environmental pollution. Unlike traditional oil-immersed types, this advanced model eliminates the need for an oil conservator. Its smart design autonomously adapts to oil volume changes through the flexible corrugated oil tank, effectively shielding the transformer from air exposure. This innovative feature halts oil deterioration, slows insulation aging, and remarkably boosts operational reliability while removing the necessity for routine maintenance.
1. Power Capacity: Spanning 25-2500KVA, catering to 24KV, 30KV, 33KV, 35KV, 36KV, and customizable to fulfill customer requirements 2. Voltage Level: Available at 10KV, 11KV, 13.8KV, 15KV, 17.5KV, 20KV, 22KV 3. Type of Voltage Regulation: Offered in Off-circuit or On-load options
4. Tapping Range: Customizable at ±5%, 2x2.5%, or ±4x2.5%
5. Frequency: Options for either 50Hz or 60Hz
6. Phases: Available in Three-phase or single-phase configurations
7. Connection Symbol: Provided as Dyn11, Yyn0, with further customization options if needed
8. Short-circuit Impedance: Crafted with Standard Impedance
9. Operational Conditions: Designed for altitudes up to 1000m and ambient temperatures under 40°C. If these conditions are not met, parameter adjustments will adhere to standard industry protocols.
All necessary adjustments will strictly conform to industry standards.
Power Capacity: Extending from 25-2500KVA
Voltage Levels: Ranging across 10KV, 11KV, 13.8KV, 20KV, 22KV, 30KV, 33KV, 35KV, 36KV
Voltage Level Overview:
Type of Voltage Regulation: Available in Off-circuit or On-load configurations
Tapping Range: Offered at ±5%, ±2x2.5%, ±4x2.5%
Frequency Options: Available in 50Hz or 60Hz selections
Phases: Options include Three-phase or single-phase
Connection Symbol: Configurable as Dyn11, Yyn0, with customization options available upon request
Short-circuit Impedance: Designed with Standard Impedance
Operational Conditions: Suitable for altitudes not exceeding 1000m and ambient temperatures below 40°C
In scenarios where conditions vary, we will carry out necessary parameter adjustments in accordance with standard guidelines.
This fully sealed oil-immersed power transformer from Chaotai Power is an innovation marvel, crafted for low energy consumption, silent operation, and unparalleled efficiency. It stands as a top-tier energy-saving solution, significantly cutting pollution.
In contrast to conventional oil-immersed transformers, this fully sealed design omits the oil conservator. It skillfully handles oil volume variations with the elasticity of the corrugated oil tank sheet, guaranteeing the transformer remains air-isolated. This vital feature not only prevents oil degradation and insulation aging but also boosts reliability and negates 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.
Our diverse and advanced product portfolio includes pioneering solutions such as high-voltage solid-state soft starters, capacitor cabinets, high and low voltage switchgear, gas-insulated switchgear, and substations. These critical products play an essential role across a wide range of industries, from energy and chemical sectors to metal smelting, electric power grids, and industrial manufacturing. Moreover, we extend our influence to academia, healthcare, municipal commerce, water management, hydropower, and road traffic, reaching both commercial and residential applications. Proudly, we empower the future through our transformative solutions, making a significant impact across these vital sectors.
Rooted in a philosophy of relentless technological advancement and 'smart manufacturing,' we are 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 story is a testament to our core values: evolving from humble beginnings to industry leadership through unwavering dedication and innovation. Our business strategy steadfastly focuses on quality as the cornerstone of survival, market reputation as the avenue for development, and 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 is to heighten 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.