Product Description



Oil Immersed Series Transformer:
Introducing the extraordinary S11-M series fully sealed oil-immersed power transformer, meticulously engineered by Zhejiang Chaotai Complete Equipment Co., Ltd. This remarkable piece of technology stands out with unparalleled features including low energy loss, whisper-quiet operation, and exceptional efficiency. It is the epitome of an energy-saving marvel, dramatically reducing both pollution and environmental impact. This cutting-edge model redefines traditional oil-immersed transformers by completely removing the need for an oil conservator. Its state-of-the-art design dynamically adjusts and compensates for oil volume changes using the elasticity of the corrugated oil tank, maintaining a perfectly airtight seal. This ingenious feature not only prevents oil deterioration and slows insulation aging but also vastly increases operational reliability, ensuring maintenance-free performance under standard operational conditions.
1. Power Capacity: Ranging from 25-2500KVA, adaptable to 24KV, 30KV, 33KV, 35KV, 36KV, with customization options available to meet specific customer needs 2. Voltage Level: Versatile options include 10KV, 11KV, 13.8KV, 15KV, 17.5KV, 20KV, 22KV 3. Type of Voltage Regulation: Choose between Off-circuit or On-load regulation
4. Tapping Range: Flexible options of ±5%, 2x2.5%, ±4x2.5%
5. Frequency: Available in both 50Hz and 60Hz
6. Phases: Configurable in either three-phase or single-phase
7. Connection Symbol: Options include Dyn11, Yyn0, with further customization available to meet specific needs
8. Short-circuit Impedance: Designed with Standard Impedance
9. Operational Conditions: Suitable for altitudes not exceeding 1000m and ambient temperatures below 40°C. If these conditions are surpassed, we ensure parameter adjustments in line with industry protocols.
All adjustments will rigorously follow industry standards, ensuring peak performance and reliability.
Power Capacity: Offering a versatile range from 25-2500KVA
Voltage Levels: Comprehensive options covering 10KV, 11KV, 13.8KV, 20KV, 22KV, 30KV, 33KV, 35KV, 36KV
Voltage Level Overview:
Type of Voltage Regulation: Fully adaptable with Off-circuit or On-load regulation options
Tapping Range: Choose from versatile options of ±5%, ±2x2.5%, ±4x2.5%
Frequency Options: Dual-frequency choices available at 50Hz or 60Hz for optimal flexibility
Phases: Customizable configurations available in three-phase or single-phase options
Connection Symbol: Choose between Dyn11, Yyn0, with customization options to suit specific requirements
Short-circuit Impedance: Engineered with standard impedance for robust performance
Operational Conditions: Designed to excel at altitudes up to 1000m and temperatures up to 40°C
In the event that conditions vary, we commit to making the necessary parameter adjustments while adhering rigorously to industry-standard guidelines.
Presenting the fully sealed oil-immersed power transformer, a paradigm of innovation by Chaotai Power, synonymous with low energy loss, serene operation, and supreme efficiency. It sets a benchmark in energy-saving solutions, drastically reducing pollution.
Setting itself apart from conventional oil-immersed transformers, this fully sealed design elegantly does away with the need for an oil conservator. It adeptly handles oil volume variations through the elasticity of the corrugated oil tank sheet, maintaining optimal air isolation. This critical attribute not only thwarts oil degradation and significantly delays insulation aging but also enhances reliability, effectively eliminating the necessity for regular 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 a beacon of technological prowess in the realm of electrical integration. As a distinguished high-tech enterprise, we boast a dedicated R&D, production, and service team, fortified by over 15 years of invaluable industry experience. Our relentless pursuit of excellence marks us as a leader in innovation.
Our diverse product portfolio features cutting-edge offerings such as high-voltage solid-state soft starters, capacitor cabinets, high and low voltage switchgear, gas-insulated switchgear, and substations. These products have found their indispensable place across a multitude of sectors including energy, chemical industries, metal smelting, electric power grids, industrial manufacturing, academia, healthcare, municipal commerce, water management, hydropower, and road traffic, extending to both commercial and residential applications. We are proud to power the future with our transformative solutions.
Rooted in a philosophy of relentless technological innovation and 'smart manufacturing,' we are committed to cultivating a culture of excellence by integrating top-tier technical talents. This strategic focus enhances our core competencies, ensuring we deliver unmatched service value to our clients. Our growth journey embodies our ethos: evolving from inception to industry leadership through unwavering dedication. Anchored in innovation, our business strategy steadfastly prioritizes quality as our survival cornerstone, market reputation as our development path, and management efficiency as our profitability key. We pledge to leverage 'technology as the guide, standardized management, superior quality, and customer satisfaction' as the foundation of our quality and talent management initiatives. Our strategic vision amplifies our market competitiveness, serving China's electric power and grid transmission and distribution sectors with aspirations that are faster, stronger, and higher. Integrity, unrivaled quality, exceptional service, and customer satisfaction form our core values. We are relentless in our pursuit of excellence, perpetually innovating to establish a brand synonymous with trust. The recognition of our customers fuels our ambition. We extend sincere gratitude to our loyal customers, both new and long-standing, and warmly invite you to join Zhejiang Chaotai Complete Equipment Co., Ltd. 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.