Product Description



Oil Immersed Series Transformer:
Introducing the revolutionary S11-M series fully sealed oil-immersed power transformer, meticulously engineered by Zhejiang Chaotai Complete Equipment Co., Ltd. This extraordinary transformer redefines efficiency with its notably low energy loss, silent operation, and unmatched performance. It is a beacon of sustainability, drastically reducing pollution and shrinking environmental footprints. Unlike conventional models, this advanced transformer forgoes an oil conservator, thanks to its ingeniously designed corrugated oil tank. This design allows it to autonomously adjust and compensate for oil volume changes, maintaining a perfectly sealed environment that shields the transformer from air exposure. Such an innovative feature effectively halts oil degradation, significantly prolongs the lifespan of insulation materials, and dramatically enhances operational reliability—all without requiring routine maintenance under normal conditions.
1. Power Capacity: With a capacity range from 25KVA to 2500KVA, featuring adaptable options like 24KV, 30KV, 33KV, 35KV, 36KV, and customizable configurations tailored to meet specific customer needs. 2. Voltage Level: Available in specifications of 10KV, 11KV, 13.8KV, 15KV, 17.5KV, 20KV, and 22KV. 3. Type of Voltage Regulation: Offers Off-circuit and On-load options for dynamic functionality.
4. Tapping Range: Features adaptable options such as ±5%, 2x2.5%, or ±4x2.5% to address a variety of power requirements.
5. Frequency: Offered in both 50Hz and 60Hz to align with diverse regional standards.
6. Phases: Available in versatile three-phase and single-phase configurations to suit a variety of applications.
7. Connection Symbol: Select from standard options like Dyn11, Yyn0, or tailor to precise specifications effortlessly.
8. Short-circuit Impedance: Equipped with a Standard Impedance for consistent and reliable performance.
9. Operational Conditions: Expertly crafted for altitudes up to 1000m with ambient temperatures under 40°C. If conditions deviate, adjustments will be made to accommodate standard protocols.
All modifications will rigorously adhere to industry standards, guaranteeing superior performance and reliability.
Power Capacity: Expanded range from 25KVA to 2500KVA, offering solutions for varied energy requirements.
Voltage Levels: Ranging from 10KV to 36KV, providing comprehensive adaptability for various needs.
Voltage Level Overview:
Type of Voltage Regulation: Available in Off-circuit and On-load variants for flexible and precise control.
Tapping Range: Offers configurations such as ±5%, ±2x2.5%, ±4x2.5% to cater to specific energy needs.
Frequency Options: Available in 50Hz or 60Hz to comply with local standards.
Phases: Offered in both Three-phase and single-phase for broad application compatibility.
Connection Symbol: Choose from standard Dyn11, Yyn0, with options for full customization available.
Short-circuit Impedance: Provides Standard Impedance to ensure reliable and steadfast operation.
Operational Conditions: Engineered to function seamlessly at altitudes up to 1000m with temperatures below 40°C.
Should operating conditions vary, necessary adjustments will be made according to standard guidelines.
The fully sealed oil-immersed power transformer, a pinnacle of Chaotai Power's innovation, excels with ultra-low energy loss, noiseless operation, and supreme efficiency. It stands as a powerful energy-saving solution, significantly reducing pollution levels.
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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 brightly as a beacon of technological expertise in the dynamic field of electrical integration. Celebrated as a distinguished high-tech enterprise, our strength lies in an exceptional team renowned for their prowess in research, development, production, and service, supported by over 15 years of unrivaled industry expertise. Our relentless quest for distinguished excellence positions us as trailblazers of innovation, defining the future through groundbreaking advancements.
Our extensive and diverse product portfolio brims with groundbreaking innovations, featuring high-voltage solid-state soft starters, capacitor cabinets, cutting-edge high and low voltage switchgear, sophisticated gas-insulated switchgear, and advanced substations. These remarkable products are vital across an 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 seamlessly serve both commercial and residential applications. We proudly empower the future with our transformative solutions, driving progress and fostering growth.
Guided by a philosophy of relentless technological evolution and 'smart manufacturing,' we are passionately committed to nurturing a culture of excellence by integrating premier technical talents. This strategic emphasis elevates our core capabilities, ensuring we unfailingly deliver unmatched service value to our esteemed clients. Our remarkable growth journey stands as a testament to our ethos: evolving from our inception to industry leadership through unwavering dedication. Our business strategy is deeply rooted in innovation, with an unyielding commitment to quality as the bedrock of our survival, market reputation as our pathway to expansion, and management efficiency as the catalyst for profitability. We are dedicated to leveraging 'technology as the guide, standardized management, superior quality, and customer satisfaction' as the cornerstones of our quality and talent management pursuits. Our strategic vision is to boost our market competitiveness, serving China's electric power and grid transmission and distribution sectors with aspirations that reach far beyond the horizon. Integrity, unparalleled quality, exceptional service, and customer satisfaction form the core of our values. We constantly strive for excellence, ceaselessly innovating to establish a brand synonymous with trust and reliability. The appreciation and trust from our customers fuel our ambition. We wholeheartedly extend our deepest gratitude to our loyal customers, both new and longstanding, and warmly invite you to join us in a shared journey with Senhang Technology towards a brighter, more innovative 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.