Product Description



Oil Immersed Series Transformer:
Introducing the groundbreaking S11-M series fully sealed oil-immersed power transformer, meticulously designed with precision and forward-thinking innovation by Zhejiang Chaotai Complete Equipment Co., Ltd. This exceptional transformer is set apart by its ultra-low energy loss, remarkably quiet operation, and unmatched efficiency. It symbolizes a new era in energy conservation, drastically reducing pollution and minimizing environmental impact. Departing from traditional oil-immersed transformers, this cutting-edge model ditches the oil conservator. The ingenious construction of the corrugated oil tank autonomously manages and adjusts to oil volume fluctuations, ensuring an impeccably sealed environment, safeguarding the transformer from atmospheric exposure. This avant-garde feature effectively inhibits oil degradation, significantly prolongs the lifespan of insulation materials, and remarkably enhances operational dependability—all while necessitating no regular maintenance under standard conditions.
1. Power Capacity: Ranges from 25-2500KVA, offering versatile options like 24KV, 30KV, 33KV, 35KV, 36KV, and bespoke configurations to meet specific customer demands. 2. Voltage Level: Offered in 10KV, 11KV, 13.8KV, 15KV, 17.5KV, 20KV, 22KV. 3. Type of Voltage Regulation: Provides both Off-circuit and On-load options, ensuring versatile functionality.
4. Tapping Range: Offers diverse selections of ±5%, 2x2.5%, or ±4x2.5% to accommodate varied power requirements.
5. Frequency: Available in both 50Hz and 60Hz, catering to varied regional standards.
6. Phases: Available in both Three-phase and single-phase configurations to suit different applications.
7. Connection Symbol: Choose from Dyn11, Yyn0, or personalize according to your precise specifications effortlessly.
8. Short-circuit Impedance: Furnished with Standard Impedance for reliable performance.
9. Operational Conditions: Expertly engineered for altitudes up to 1000m and ambient temperatures below 40°C. If these conditions fluctuate, we will adapt parameters as needed in compliance with standard protocols.
All alterations will rigorously adhere to industry standards, ensuring peak performance.
Power Capacity: Spanning from 25-2500KVA to meet a range of energy requirements.
Voltage Levels: Available in 10KV, 11KV, 13.8KV, 20KV, 22KV, 30KV, 33KV, 35KV, 36KV, offering broad adaptability.
Voltage Level Overview:
Type of Voltage Regulation: Offered in both Off-circuit and On-load variants, ensuring flexible control.
Tapping Range: Provides options like ±5%, ±2x2.5%, ±4x2.5% to meet specific needs.
Frequency Options: Choose from 50Hz or 60Hz to comply with local standards.
Phases: Available in both Three-phase and single-phase for adaptable applications.
Connection Symbol: Standard choices include Dyn11, Yyn0, with entirely customizable configurations available.
Short-circuit Impedance: Equipped with Standard Impedance for consistent operation.
Operational Conditions: Designed to function optimally at altitudes not exceeding 1000m and temperatures below 40°C.
If operational conditions deviate, suitable parameter adjustments will be executed in line with standard guidelines.
The fully sealed oil-immersed power transformer, a testament to Chaotai Power's innovative prowess, excels with extremely low energy loss, tranquil operations, and superior efficiency. It's a formidable energy-saving apparatus that significantly curtails pollution.
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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. is a beacon of technological brilliance in the dynamic world of electrical integration. As a distinguished high-tech enterprise, we stand on the strong foundation of over 15 years of industry expertise, supported by an elite team dedicated to research, development, production, and service. Our steadfast pursuit of excellence distinguishes us as true pioneers of innovation and technological mastery.
Our extensive and diverse product range showcases state-of-the-art innovations, featuring high-voltage solid-state soft starters, capacitor cabinets, high and low voltage switchgear, gas-insulated switchgear, and substations. These exceptional products are essential across a wide array of sectors, including energy, chemical industries, metal smelting, electric power grids, industrial manufacturing, academia, healthcare, municipal commerce, water management, hydropower, and road traffic. Their wide-ranging applicability extends to both commercial and residential domains. Zhejiang ChaoTai proudly electrifies the future with our groundbreaking solutions.
Guided by a relentless philosophy of technological evolution and 'smart manufacturing,' we are passionately committed to cultivating a culture of excellence through the integration of top-tier technical talents. This strategic focus enhances our core capabilities, ensuring we consistently provide unmatched service value to our clients. Our extraordinary journey from inception to industry leadership is a testament to our ethos of steadfast dedication. Our strategy is firmly anchored in innovation, with an unwavering commitment to quality as the cornerstone of our existence, market reputation as the pathway to growth, and management efficiency as the profitability driver. We are dedicated to harnessing '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 elevate our market competitiveness, serving China's electric power and grid transmission and distribution sectors with aspirations reaching new heights. Integrity, unmatched quality, exceptional service, and customer satisfaction form the core of our values. We consistently strive for excellence and unceasingly innovate to establish a brand synonymous with trust. The appreciation from our customers fuels our ambition, and we express our deepest gratitude to our loyal customers, both new and longstanding. We warmly invite you to join us in a shared journey with Senhang Technology towards 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.