Product Description



Oil Immersed Series Transformer:
Introducing the unparalleled S11-M series fully sealed oil-immersed power transformer, a true marvel crafted with precision by Zhejiang Chaotai Complete Equipment Co., Ltd. This exceptional transformer stands out with its remarkable low energy consumption, ultra-quiet operation, and unmatched efficiency. It is a beacon of energy efficiency, significantly reducing pollution and minimizing environmental footprint. Unlike traditional oil-immersed transformers, this sophisticated model does away with the oil conservator altogether. Thanks to the intelligent elasticity of its corrugated oil tank, it autonomously adjusts to oil volume changes, maintaining a perfect seal to protect the transformer from air exposure. This groundbreaking feature not only prevents oil degradation but also dramatically extends the lifespan of insulation and boosts operational reliability, all while eliminating the need for maintenance during typical use.
1. Power Capacity: Offering a range from 25-2500KVA, with adaptable options for 24KV, 30KV, 33KV, 35KV, 36KV, and additional customization to meet unique client demands 2. Voltage Level: Available in 10KV, 11KV, 13.8KV, 15KV, 17.5KV, 20KV, 22KV 3. Type of Voltage Regulation: Provides choices for both Off-circuit and On-load configurations
4. Tapping Range: Available options include ±5%, 2x2.5%, ±4x2.5%
5. Frequency: Choose between 50Hz or 60Hz, catering to your specific requirements
6. Phases: Customizable in Three-phase or single-phase arrangements
7. Connection Symbol: Dyn11, Yyn0 (or fully customizable to match your exact specifications)
8. Short-circuit Impedance: Features Standard Impedance, ensuring dependable performance
9. Operational Conditions: Engineered for altitudes not exceeding 1000m, and ambient temperatures below 40°C. Should these conditions be surpassed, we will implement necessary parameter adaptations in strict accordance with standard protocols.
All adjustments will be meticulously aligned with industry standards.
Power Capacity: Spanning a range from 25-2500KVA
Voltage Levels: Options include 10KV, 11KV, 13.8KV, 20KV, 22KV, 30KV, 33KV, 35KV, 36KV
Voltage Level Overview:
Type of Voltage Regulation: Options available in Off-circuit or On-load configurations
Tapping Range: Includes choices such as ±5%, ±2x2.5%, ±4x2.5%
Frequency Options: Select between 50Hz or 60Hz to best suit your needs
Phases: Offered in Three-phase or single-phase configurations
Connection Symbol: Dyn11, Yyn0 (with customization available upon request)
Short-circuit Impedance: Equipped with Standard Impedance for assured reliability
Operational Conditions: Tailored for altitudes not exceeding 1000m, with ambient temperatures kept below 40°C
Should environmental conditions deviate, essential parameter adjustments will be made, strictly observing standard guidelines.
The fully sealed oil-immersed power transformer, a testament to Chaotai Power's innovative prowess, excels with exceptionally low energy loss, noiseless operation, and superior efficiency. It stands as a paragon of energy conservation, vastly reducing pollution.
In contrast to conventional oil-immersed transformers, this fully sealed design dispenses with the need for an oil conservator. It adeptly manages oil volume changes through the elastic properties of the corrugated oil tank sheet, ensuring the transformer remains insulated from air. This pivotal feature not only prevents oil deterioration and postpones insulation aging but also significantly boosts reliability, doing away with the necessity for routine 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 within the ever-evolving landscape of electrical integration. Celebrated as a leading high-tech enterprise, we proudly unveil a team of highly skilled professionals in R&D, production, and service, reinforced by an impressive legacy of over 15 years of industry expertise. Our steadfast commitment to achieving unparalleled excellence sets us apart as a pioneer in innovation, consistently pushing boundaries and setting new standards.
Our expansive product portfolio showcases cutting-edge innovations, featuring high-voltage solid-state soft starters, capacitor cabinets, high and low voltage switchgear, gas-insulated switchgear, and substations. These remarkable products serve as indispensable assets across various sectors, including energy, chemical industries, metal smelting, electric power grids, industrial manufacturing, academia, healthcare, municipal commerce, water management, hydropower, and road traffic. Their versatility extends their impact to both commercial and residential realms. We take immense pride in our role as enablers of the future with our groundbreaking solutions.
Guided by a philosophy rooted in relentless technological advancement and 'smart manufacturing,' we are wholeheartedly committed to fostering a culture of excellence by integrating top-tier technical talents. This strategic focus amplifies our core capabilities, ensuring we continually deliver unparalleled service value to our clients. Our extraordinary journey from inception to industry leadership is a testament to our ethos of unwavering dedication. Our business strategy is firmly anchored in innovation, with an unwavering commitment to quality as our survival cornerstone. Market reputation serves as the pathway to growth, while management efficiency drives profitability. We aim to leverage 'technology as the guide, standardized management, superior quality, and customer satisfaction' as the keystones of our quality and talent management initiatives. Our strategic vision seeks to enhance our market competitiveness, serving China's electric power and grid transmission and distribution sectors, with ambitions soaring to greater heights. Integrity, unmatched quality, exceptional service, and customer satisfaction are at the heart of our values. We persistently strive for excellence, continuously innovating to establish our brand as synonymous with trust. Our customers' appreciation fuels our ambition. We extend our deepest gratitude to our loyal clientele, both new and longstanding, and warmly invite you to join us on a shared journey with Senhang Technology toward 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.