Product Description



Oil Immersed Series Transformer:
Introducing the revolutionary S11-M series fully sealed oil-immersed power transformer, expertly crafted by Zhejiang Chaotai Complete Equipment Co., Ltd. This exceptional transformer shines with features including impressively low energy loss, near-silent operation, and outstanding efficiency, setting a new standard in energy conservation. Not only does it dramatically cut down pollution and environmental impact, but it also redefines traditional oil-immersed transformer designs by eliminating the need for an oil conservator. Its innovative corrugated oil tank's elasticity allows it to regulate oil volume changes automatically, maintaining a sealed environment that protects the transformer from air exposure. This groundbreaking feature curtails oil deterioration, extends insulation longevity, and significantly enhances operational reliability—all while requiring no routine maintenance during standard operations.
1. Power Capacity: Flexible options from 25-2500KVA, with voltage choices of 24KV, 30KV, 33KV, 35KV, 36KV, and further customization to match specific customer needs 2. Voltage Level: Available in 10KV, 11KV, 13.8KV, 15KV, 17.5KV, 20KV, 22KV 3. Type of Voltage Regulation: Features both Off-circuit and On-load options
4. Tapping Range: Offers ±5%, 2x2.5%, ±4x2.5% for versatile applications
5. Frequency: Provides options for both 50Hz and 60Hz
6. Phases: Customizable in Three-phase or single-phase configurations to suit diverse requirements
7. Connection Symbol: Choose from Dyn11, Yyn0, or tailor it to your specifications
8. Short-circuit Impedance: Built with Standard Impedance for reliable performance
9. Operational Conditions: Designed for altitudes up to 1000m, and ambient temperatures below 40°C. If conditions differ, adjustments are made according to standard protocols.
All adjustments are meticulously aligned with industry standards, ensuring uncompromised quality.
Power Capacity: Range extends between 25-2500KVA, catering to various power needs
Voltage Levels: Flexibility to choose from 10KV, 11KV, 13.8KV, 20KV, 22KV, 30KV, 33KV, 35KV, 36KV
Voltage Level Overview:
Type of Voltage Regulation: Available in both Off-circuit or On-load options for adaptive functionality
Tapping Range: Includes options of ±5%, ±2x2.5%, ±4x2.5% for precise control
Frequency Options: Offers both 50Hz and 60Hz for broad compatibility
Phases: Choose from Three-phase or single-phase to meet specific application needs
Connection Symbol: Options include Dyn11, Yyn0, or customize as required
Short-circuit Impedance: Equipped with Standard Impedance for consistent performance
Operational Conditions: Ideal for altitudes up to 1000m, with ambient temperatures up to 40°C
Should operational conditions vary, parameter adjustments are executed following standard guidelines to ensure optimal performance.
The fully sealed oil-immersed power transformer by Chaotai Power epitomizes innovation with its extremely low energy loss, silent operation, and exceptional efficiency. This transformative energy-saving solution significantly lowers pollution and environmental impact.
In contrast to conventional oil-immersed transformers, this advanced fully sealed design removes the need for an oil conservator. By utilizing the elastic properties of its corrugated oil tank sheet, it adeptly manages oil volume changes, keeping the transformer insulated from air. This pivotal feature prevents oil degradation, prolongs insulation lifespan, and markedly enhances reliability, eliminating the need 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. is a paragon of technological brilliance in the ever-evolving realm of electrical integration. As a leading high-tech enterprise, we take immense pride in our elite R&D, production, and service teams, fortified by over 15 years of invaluable industry expertise. Our relentless pursuit of unparalleled excellence sets us apart as a visionary leader in innovation.
Boasting an extensive and diverse product array, we present cutting-edge innovations such as high-voltage solid-state soft starters, advanced capacitor cabinets, high and low voltage switchgear, sophisticated gas-insulated switchgear, and robust substations. These superior products play a pivotal role across a vast array of sectors including energy, chemical industries, metal smelting, electric power grids, industrial manufacturing, academia, healthcare, municipal commerce, water management, hydropower, and road traffic. They extend their remarkable utility to both commercial and residential applications. We are profoundly proud of our ability to empower the future with our pioneering solutions.
Embracing a philosophy of relentless technological advancement and 'smart manufacturing,' we are fervently dedicated to fostering a culture of excellence by integrating premier technical talents. This strategic initiative bolsters our core capabilities, ensuring the consistent delivery of unparalleled service value to our clients. Our remarkable growth journey exemplifies our ethos: evolving from inception to industry leadership through steadfast dedication. Our business strategy is deeply rooted in innovation, maintaining an unwavering commitment to quality as the cornerstone of our survival, market reputation as the channel to development, and management efficiency as the catalyst for profitability. We are resolute in leveraging 'technology as the guide, standardized management, superior quality, and customer satisfaction' as the pillars of our quality and talent management programs. Our strategic vision is to enhance our market competitiveness, serving China's electric power and grid transmission and distribution sectors with aspirations soaring to new heights. Integrity, peerless quality, exceptional service, and customer satisfaction are at the heart of our values. We are in a relentless pursuit of excellence, consistently innovating to establish a brand synonymous with trust. The appreciation of our customers fuels our ambitions. We extend our deepest gratitude to our loyal customers, both new and longstanding, and warmly invite you to join Senhang Technology on a shared journey towards a luminous 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.