Product Description



Oil Immersed Series Transformer:
Discover the extraordinary S11-M series, a fully sealed oil-immersed power transformer, masterfully engineered by Zhejiang Chaotai Complete Equipment Co., Ltd. This exceptional transformer is renowned for its unparalleled features, including ultra-low energy loss, whisper-quiet operation, and outstanding efficiency. It is the ultimate energy-saving marvel, dramatically minimizing environmental impact and pollution. Unlike conventional oil-immersed models, this cutting-edge transformer forgoes the need for an oil conservator. Its ingenious design autonomously adjusts to oil volume variations with the elasticity of the corrugated oil tank, ensuring a hermetic seal against air exposure. This groundbreaking feature not only prevents oil degradation and slows insulation aging but also significantly enhances operational reliability, all while eliminating the need for regular maintenance under normal operating conditions.
1. Power Capacity: Spanning from 25KVA to an impressive 2500KVA, with voltage options of 24KV, 30KV, 33KV, 35KV, 36KV, and customizable configurations to meet specific customer requirements. 2. Voltage Level: Offering a versatile range including 10KV, 11KV, 13.8KV, 15KV, 17.5KV, 20KV, and 22KV. 3. Type of Voltage Regulation: Choose from Off-circuit or On-load regulation for tailored performance.
4. Tapping Range: Flexibility with ±5%, 2x2.5%, ±4x2.5%
5. Frequency: Available in both 50Hz and 60Hz for global compatibility.
6. Phases: Options include three-phase or single-phase for diverse applications.
7. Connection Symbol: Offered in Dyn11 and Yyn0, with custom configurations available upon request.
8. Short-circuit Impedance: Conforms to Standard Impedance for reliability.
9. Operational Conditions: Suitable for altitudes not exceeding 1000m and ambient temperatures below 40°C. If conditions differ, adjustments will be made according to standard industry protocols.
All necessary adjustments will strictly adhere to industry standards, ensuring optimal performance.
Power Capacity: Extensive range from 25KVA to 2500KVA for versatile applications.
Voltage Levels: Offering comprehensive options including 10KV, 11KV, 13.8KV, 20KV, 22KV, 30KV, 33KV, 35KV, and 36KV for diverse needs.
Voltage Level Overview:
Type of Voltage Regulation: Choose between Off-circuit and On-load for customized control.
Tapping Range: Configurations include ±5%, ±2x2.5%, ±4x2.5% for precise adjustments.
Frequency Options: Dual options of 50Hz or 60Hz for global applicability.
Phases: Available in both three-phase and single-phase to suit various applications.
Connection Symbol: Standard configurations of Dyn11, Yyn0, with customization available upon request.
Short-circuit Impedance: Maintains Standard Impedance for dependable performance.
Operational Conditions: Designed for altitudes up to 1000m and ambient temperatures up to 40°C
In cases of deviation from standard conditions, necessary parameter adjustments will be made according to established guidelines.
The fully sealed oil-immersed power transformer, a beacon of innovation by Chaotai Power, is celebrated for its minimal energy loss, silent operation, and peak efficiency. It provides a stellar energy-saving solution that dramatically reduces pollution and environmental impact.
Unlike traditional oil-immersed transformers, this fully sealed design eradicates the oil conservator. It adeptly manages oil volume fluctuations using the elasticity of the corrugated oil tank sheet, ensuring the transformer remains impeccably isolated from air. This crucial feature not only prevents oil degradation and insulation aging but also significantly enhances reliability and eliminates 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. epitomizes technological brilliance in the sphere of electrical integration. As a prestigious high-tech enterprise, we pride ourselves on a dedicated team specializing in R&D, production, and service, backed by an impressive 15 years of industry expertise. Our unwavering commitment to excellence sets us apart as trailblazers in innovation.
Our extensive product line showcases state-of-the-art solutions, including high-voltage solid-state soft starters, capacitor cabinets, both high and low voltage switchgear, gas-insulated switchgear, and fully-equipped substations. These transformative products have secured an essential role across a vast array of sectors such as energy, chemical industries, metal smelting, electric power grids, and industrial manufacturing. Additionally, they serve crucial functions in academia, healthcare, municipal commerce, water management, hydropower, and road traffic, catering to both commercial and residential needs. We pride ourselves on empowering the future with these groundbreaking solutions.
Rooted in a philosophy of unwavering technological innovation and 'smart manufacturing,' we are dedicated to nurturing a culture of excellence by integrating top-tier technical talents. This strategic initiative bolsters our core strengths, ensuring that we provide unmatched service value to our esteemed clients. Our remarkable growth journey speaks volumes of our ethos: evolving from inception to industry leadership through steadfast dedication. Our business strategy is deeply rooted in innovation, with an enduring commitment to quality as the cornerstone of survival, market reputation as the pathway to growth, and management efficiency as the crucial element for profitability. We pledge to uphold 'technology as the guide, standardized management, superior quality, and customer satisfaction' as the fundamental pillars of our quality and talent management strategies. Our visionary goal is to elevate our market competitiveness, serving China's electric power, grid transmission, and distribution sectors with ambitions that aim to be faster, stronger, and higher. Integrity, exceptional quality, outstanding service, and customer satisfaction are the cornerstones of our core values. We relentlessly pursue excellence, continually innovating to build a brand synonymous with trust and dependability. The recognition from our customers drives our ambition. We extend our deepest gratitude to our loyal customers, both new and longstanding, and cordially invite you to embark on a shared journey with Senhang Technology towards a brighter 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.