Product Description



Oil Immersed Series Transformer:
Introducing the extraordinary S11-M series, a fully sealed oil-immersed power transformer meticulously engineered by Zhejiang Chaotai Complete Equipment Co., Ltd. This distinguished transformer boasts exceptional attributes: minimal energy consumption, low operational noise, and unmatched efficiency. As an exemplary energy solution, it significantly reduces environmental pollution. Unlike conventional oil-immersed variants, this advanced model eliminates the need for an oil conservator. Its intelligent design independently responds to oil volume changes through the flexibility of the corrugated oil tank, effectively sealing the transformer from air exposure. This cutting-edge feature prevents oil degradation, slows insulation aging, and greatly enhances operational reliability, while completely removing the necessity for maintenance during regular operations.
1. Power Capacity: Offering a range from 25-2500KVA, with flexibility for 24KV, 30KV, 33KV, 35KV, 36KV, and customizable to meet specific customer needs 2. Voltage Level: Available options 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: Available in options for either 50Hz or 60Hz
6. Phases: Available in Three-phase or single-phase setups
7. Connection Symbol: Available as Dyn11, Yyn0, with further customization options as required
8. Short-circuit Impedance: Designed with Standard Impedance
9. Operational Conditions: Ideally suited for altitudes not exceeding 1000m and ambient temperatures below 40°C. Should these conditions not be met, adjustments in parameters will adhere to standard industry protocols.
All necessary adjustments will strictly follow industry standards.
Power Capacity: Ranges from 25-2500KVA
Voltage Levels: Ranges include 10KV, 11KV, 13.8KV, 20KV, 22KV, 30KV, 33KV, 35KV, 36KV
Voltage Level Overview:
Type of Voltage Regulation: Options available in Off-circuit or On-load
Tapping Range: Provided at ±5%, ±2x2.5%, ±4x2.5%
Frequency Options: Available in modes of 50Hz or 60Hz
Phases: Options include Three-phase or single-phase
Connection Symbol: Configurable as Dyn11, Yyn0, with customization options available upon request
Short-circuit Impedance: Engineered with Standard Impedance
Operational Conditions: Designed for altitudes not exceeding 1000m and ambient temperatures not exceeding 40°C
In cases where conditions differ, we will perform necessary parameter adjustments while adhering to standard guidelines.
This fully sealed oil-immersed power transformer, a marvel of innovation from Chaotai Power, is engineered for low energy loss, whisper-quiet operation, and exceptional efficiency. It stands as a premier energy-saving solution, drastically reducing pollution.
Distinct from conventional oil-immersed transformers, this fully sealed design bypasses the oil conservator. It skillfully manages oil volume fluctuations with the flexibility of the corrugated oil tank sheet, ensuring the transformer remains airtight. This vital feature not only prevents oil degradation and insulation aging but also enhances reliability and obviates 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. radiates as a luminary of advanced technological prowess and groundbreaking innovation in electrical integration. As a celebrated high-tech enterprise, we are marked by our dedicated R&D, production, and service teams, supported by a remarkable legacy of over 15 years of invaluable industry know-how. Our steadfast dedication to excellence accentuates our role as a trailblazer in innovation, consistently setting the gold standard within the industry.
Our expansive and cutting-edge product portfolio boasts trailblazing solutions such as high-voltage solid-state soft starters, capacitor cabinets, high and low voltage switchgear, gas-insulated switchgear, and substations. These pivotal products are indispensable across a diverse array of industries, stretching from energy and chemical sectors to metal smelting, electric power grids, and industrial manufacturing. Moreover, we extend our transformative reach to academia, healthcare, municipal commerce, water management, hydropower, and road traffic, serving both commercial and residential applications. With pride, we power the future through our transformative solutions, making a resounding impact across these crucial sectors.
Anchored in a philosophy of relentless technological progress and 'smart manufacturing,' we are dedicated to fostering a culture of excellence by integrating top-tier technical talents and pioneering strategies. This strategic devotion bolsters our core competencies, ensuring we provide unparalleled service value to our clients. Our narrative of growth stands as a testament to our core values: evolving from humble beginnings to industry leadership through unwavering dedication and innovation. Our business strategy unerringly focuses on quality as the cornerstone of endurance, market reputation as the avenue for expansion, and management efficiency as the linchpin of profitability. We pledge to use '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 aim higher, reach further, and accomplish more. Integrity, unmatched quality, exceptional service, and customer satisfaction lie at the heart of our values. Our relentless pursuit of excellence propels us to ceaselessly innovate, establishing our brand as synonymous with trust. The acknowledgment of our esteemed customers fuels 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.