Product Description



Oil Immersed Series Transformer:
Introducing the groundbreaking S11-M series fully sealed oil-immersed power transformer, a marvel of innovation and precision crafted by Zhejiang Chaotai Complete Equipment Co., Ltd. This state-of-the-art transformer is a beacon of excellence, featuring incredibly low energy loss and whisper-silent operation, setting new standards in efficiency. As an epitome of energy conservation, it dramatically reduces pollution and minimizes environmental footprint. In a stark departure from traditional oil-immersed transformers, this advanced model eliminates the need for an oil conservator. The ingenious design of the corrugated oil tank employs elasticity to autonomously adjust for oil volume changes, maintaining a pristine air-tight seal that protects the transformer from air exposure. This revolutionary feature prevents oil degradation, extends insulation longevity, and significantly boosts operational dependability—all without requiring routine maintenance under normal conditions.
1. Power Capacity: Offering a broad range from 25-2500KVA, with customization options available for 24KV, 30KV, 33KV, 35KV, 36KV, to precisely fulfill diverse customer requirements. 2. Voltage Level: Available in comprehensive options including 10KV, 11KV, 13.8KV, 15KV, 17.5KV, 20KV, 22KV. 3. Type of Voltage Regulation: Choose between Off-circuit and On-load solutions.
4. Tapping Range: Options include ±5%, 2x2.5%, ±4x2.5%, designed to ensure flexibility and adaptability.
5. Frequency: Select from either 50Hz or 60Hz to match your specific requirements.
6. Phases: Available in both Three-phase and single-phase configurations for diverse applications.
7. Connection Symbol: Standard options include Dyn11, Yyn0, with full customization available to meet your specifications.
8. Short-circuit Impedance: Equipped with standard impedance for reliable performance.
9. Operational Conditions: Engineered for altitudes up to 1000m, and ambient temperatures not exceeding 40°C. Should these conditions be surpassed, diligent parameter adjustments will be performed according to industry norms.
All adjustments are meticulously executed in strict compliance with industry standards.
Power Capacity: Spanning an extensive range from 25-2500KVA.
Voltage Levels: An array of options including 10KV, 11KV, 13.8KV, 20KV, 22KV, 30KV, 33KV, 35KV, 36KV is available for selection.
Voltage Level Overview:
Type of Voltage Regulation: Choose from Off-circuit or On-load options to suit your operational needs.
Tapping Range: Diverse options such as ±5%, ±2x2.5%, ±4x2.5% to provide flexibility.
Frequency Options: Available in both 50Hz and 60Hz to complement various power systems.
Phases: Choose between Three-phase and single-phase configurations for optimal application.
Connection Symbol: Options include Dyn11, Yyn0, with the possibility for customization upon request.
Short-circuit Impedance: Comes equipped with standard impedance for consistent performance.
Operational Conditions: Designed to thrive at altitudes up to 1000m, and in ambient temperatures below 40°C.
Should conditions deviate from standard parameters, necessary adjustments will be enacted, ensuring compliance with industry guidelines.
The fully sealed oil-immersed power transformer, a pinnacle of ingenuity by Chaotai Power, excels with its ultra-low energy loss, silent operation, and superior efficiency. It stands as a premier energy-saving solution with profound pollution reduction capabilities.
In contrast to conventional oil-immersed transformers, this fully sealed design eliminates the necessity for an oil conservator. It adeptly manages oil volume variations through the flexible design of the corrugated oil tank sheet, safeguarding insulation from air exposure. This crucial feature not only halts oil deterioration and delays insulation aging but also substantially bolsters reliability, dispensing with 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. stands as a beacon of technological prowess in the vibrant realm of electrical integration. As a distinguished high-tech enterprise, we proudly present a team of R&D, production, and service experts, each imbued with over 15 years of invaluable industry experience. Our steadfast dedication to achieving exceptional excellence sets us apart as a visionary leader in the landscape of innovation.
Our expansive and diverse product portfolio boasts cutting-edge innovations, featuring high-voltage solid-state soft starters, capacitor cabinets, high and low voltage switchgear, gas-insulated switchgear, and substations. These outstanding products have become indispensable in numerous sectors, including energy, chemical industries, metal smelting, electric power grids, industrial manufacturing, academia, healthcare, municipal commerce, water management, hydropower, and road traffic. Their utility extends to both commercial and residential applications. We take great pride in shaping the future with our trailblazing solutions.
Driven by a philosophy of relentless technological innovation and 'smart manufacturing,' we are committed to cultivating a culture of excellence through the integration of top-tier technical talents. This strategic approach enhances our core strengths, ensuring we consistently deliver unparalleled service value to our clients. Our remarkable growth journey is a testament to our ethos: evolving from inception to industry leadership through unwavering dedication. Our business strategy is firmly rooted in innovation, with an unyielding commitment to quality as the foundation of our survival, market reputation as the pathway to development, and management efficiency as the engine of profitability. We are dedicated to leveraging '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 amplify our market competitiveness, serving China's electric power and grid transmission and distribution sectors with aspirations that soar to new heights. Integrity, unrivaled quality, exceptional service, and customer satisfaction form the core of our values. We relentlessly pursue excellence, continuously innovating to establish a brand synonymous with trust. The appreciation of our customers fuels our ambition. We extend our deepest gratitude to our loyal customers, both new and longstanding, and warmly 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.