Product Description



Oil Immersed Series Transformer:
Introducing the revolutionary S11-M series fully sealed oil-immersed power transformer, a masterpiece of engineering excellence from Zhejiang Chaotai Complete Equipment Co., Ltd. This exceptional transformer sets new standards with its ultra-low energy loss, quiet operation, and outstanding efficiency. It shines as a symbol of energy conservation, drastically reducing pollution and shrinking the ecological footprint. Unlike conventional oil-immersed transformers, this innovative model eliminates the need for an oil conservator. The ingeniously designed corrugated oil tank self-adjusts and compensates for oil volume changes, ensuring a perfectly sealed environment that shields the transformer from air exposure. This groundbreaking feature effectively prevents oil degradation, significantly prolongs the lifespan of insulation materials, and dramatically enhances operational reliability—all while eliminating the need for routine maintenance under normal operation.
1. Power Capacity: With options ranging from 25-2500KVA, and flexible configurations like 24KV, 30KV, 33KV, 35KV, 36KV, each tailored to meet specific customer needs. 2. Voltage Level: The transformer is available in 10KV, 11KV, 13.8KV, 15KV, 17.5KV, 20KV, 22KV, accommodating a range of electrical demands. 3. Type of Voltage Regulation: Provides both Off-circuit and On-load options, granting versatile functionality.
4. Tapping Range: Offers a selection of ±5%, 2x2.5%, or ±4x2.5% to precisely address diverse power needs.
5. Frequency: Available in both 50Hz and 60Hz, catering to a variety of regional requirements.
6. Phases: This transformer is available in both Three-phase and single-phase configurations, designed to suit a wide range of applications.
7. Connection Symbol: Choose from Dyn11, Yyn0, or tailor the connection to your exact specifications with ease and precision.
8. Short-circuit Impedance: Equipped with Standard Impedance, ensuring reliable and consistent performance.
9. Operational Conditions: Expertly engineered for altitudes up to 1000m and ambient temperatures of less than 40°C. Should these conditions vary, we will adeptly adjust parameters as required by standard protocols.
All modifications are meticulously aligned with industry standards, guaranteeing peak performance and reliability.
Power Capacity: Tailored to accommodate a range of energy demands, from 25-2500KVA.
Voltage Levels: Available in 10KV, 11KV, 13.8KV, 20KV, 22KV, 30KV, 33KV, 35KV, 36KV, offering extensive adaptability to any requirement.
Voltage Level Overview:
Type of Voltage Regulation: Both Off-circuit and On-load variants are offered for adaptable and precise control.
Tapping Range: Provides options like ±5%, ±2x2.5%, ±4x2.5% to meet specific and precise requirements.
Frequency Options: Select from 50Hz or 60Hz to comply with regional standards and preferences.
Phases: Available in both Three-phase and single-phase for versatile and comprehensive applications.
Connection Symbol: Standard options include Dyn11, Yyn0, with fully customizable configurations to suit individual needs.
Short-circuit Impedance: Equipped with Standard Impedance for reliable and dependable operation.
Operational Conditions: Specifically designed to function optimally at altitudes not exceeding 1000m and temperatures below 40°C.
Should operational conditions deviate, precise parameter adjustments will be made in accordance with standard guidelines to ensure optimal performance.
The fully sealed oil-immersed power transformer, a testament to Chaotai Power's innovative brilliance, excels with incredibly low energy loss, silent operations, and superior efficiency. It stands as a potent energy-saving device that significantly curtails pollution and environmental impact.
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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 as a paragon of technological advancement in the dynamic realm of electrical integration. Celebrated as a high-tech enterprise, we boast an elite cadre of experts in research, development, production, and service, fortified by over 15 years of profound industry insight. Our unwavering quest for unparalleled excellence distinguishes us as trailblazers of innovation, setting the gold standard in our field.
Our vast and varied product suite showcases groundbreaking innovations: from high-voltage solid-state soft starters and capacitor cabinets to high and low voltage switchgear, gas-insulated switchgear, and substations. These exceptional products are vital across a spectrum of industries including energy, chemical sectors, metal smelting, electric power grids, industrial manufacturing, education, healthcare, municipal commerce, water management, hydropower, and road traffic. They seamlessly extend their functionality to both commercial and residential environments. We proudly shape the future with our revolutionary solutions, empowering industries with cutting-edge technology and unwavering reliability.
Guided by a philosophy of relentless technological advancement and 'smart manufacturing,' we are deeply committed to nurturing a culture of excellence by integrating premier technical talents. This strategic focus enhances our core competencies, ensuring we consistently deliver unmatched service value to our clients. Our extraordinary growth journey embodies our ethos: ascending from inception to industry leadership through unwavering dedication. Our business strategy is firmly anchored in innovation, with an unwavering commitment to quality as our survival foundation, market reputation as our growth pathway, and management efficiency as our profitability catalyst. We are devoted to leveraging 'technology as the guide, standardized management, superior quality, and customer satisfaction' as the cornerstones of our quality and talent management initiatives. Our strategic vision aims to elevate our market competitiveness, serving China's electric power and grid transmission and distribution sectors with aspirations reaching new pinnacles. Integrity, unmatched quality, exceptional service, and customer satisfaction form the core of our values. We persistently strive for excellence, perpetually innovating to establish a brand synonymous with trust. The gratitude from our customers fuels our ambition. We extend our heartfelt appreciation to our loyal customers, both new and enduring, and warmly invite you to join us on a shared journey with Senhang Technology towards a vibrant 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.