Product Description



Oil Immersed Series Transformer:
Introducing the state-of-the-art S11-M series fully sealed oil-immersed power transformer, masterfully designed and crafted by Zhejiang Chaotai Complete Equipment Co., Ltd. This cutting-edge transformer is renowned for its outstanding attributes, including minimal energy loss, whisper-quiet operation, and exceptional efficiency. It stands as a paragon of energy conservation, dramatically reducing pollution and minimizing environmental impact. In a departure from traditional designs, this model operates without an oil conservator, thanks to its intelligent engineering. It autonomously manages oil volume variations using the elasticity of its corrugated oil tank, maintaining an airtight seal to prevent air exposure. This groundbreaking feature ensures the longevity of the oil, delays the aging of insulation, and remarkably increases operational reliability, all while eliminating the necessity for routine maintenance during regular operations.
1. Power Capacity: Ranges from 25 to 2500KVA with options for 24KV, 30KV, 33KV, 35KV, 36KV, and customizable configurations to meet specific customer needs 2. Voltage Level: Offers options of 10KV, 11KV, 13.8KV, 15KV, 17.5KV, 20KV, 22KV 3. Type of Voltage Regulation: Available in Off-circuit or On-load types
4. Tapping Range: Configurations of ±5%, 2x2.5%, ±4x2.5%
5. Frequency: Choice of 50Hz or 60Hz
6. Phases: Choice between Three-phase or single-phase systems
7. Connection Symbol: Options include Dyn11, Yyn0, with customization available to meet specific requirements
8. Short-circuit Impedance: Follows Standard Impedance protocols
9. Operational Conditions: Suitable for altitudes not exceeding 1000m with ambient temperature under 40°C. Should conditions exceed these parameters, adjustments will be implemented in accordance with established standards.
All necessary adjustments will strictly adhere to industry standards.
Power Capacity: Available in the range of 25 to 2500KVA
Voltage Levels: Available options include 10KV, 11KV, 13.8KV, 20KV, 22KV, 30KV, 33KV, 35KV, 36KV
Voltage Level Overview:
Type of Voltage Regulation: Offers both Off-circuit and On-load options
Tapping Range: Configurations include ±5%, ±2x2.5%, ±4x2.5%
Frequency Options: Choose between 50Hz or 60Hz
Phases: Options for Three-phase or single-phase
Connection Symbol: Choices include Dyn11, Yyn0, with customization available upon request
Short-circuit Impedance: Complies with Standard Impedance
Operational Conditions: Optimal operation at altitudes not exceeding 1000m and ambient temperatures not exceeding 40°C
Should operational conditions vary, necessary parameter adjustments will be made in strict adherence to standard guidelines.
The fully sealed oil-immersed power transformer, a testament to Chaotai Power's innovation prowess, features low energy loss, silent performance, and superior efficiency. This excellent energy-saving solution drastically reduces pollution and environmental footprint.
Unlike conventional oil-immersed transformers, this leading-edge fully sealed design does away with the need for an oil conservator. Leveraging the elasticity of its corrugated oil tank, it deftly manages oil volume shifts, securing the transformer's isolation from air. This crucial feature not only averts oil degradation and insulation wear but also enhances reliability and negates regular maintenance requirements.
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 pinnacle of technological innovation within the electrical integration landscape. As an esteemed high-tech enterprise, we have cultivated a specialized R&D, production, and service team, empowered by over 15 years of esteemed industry expertise. Our unwavering commitment to excellence sets us apart as a frontrunner in pioneering advancements.
Our extensive product suite is a testament to cutting-edge innovation, featuring state-of-the-art high-voltage solid-state soft starters, advanced capacitor cabinets, versatile high and low voltage switchgear, sophisticated gas-insulated switchgear, and robust substations. These indispensable products have seamlessly integrated into a plethora of sectors, including energy, chemical industries, metal smelting, electric power grids, industrial manufacturing, academia, healthcare, municipal commerce, water management, hydropower, and road traffic. Extending their influence into both commercial and residential spheres, we proudly fuel the future with transformative, pioneering solutions.
Guided by a philosophy of ceaseless technological advancement and 'smart manufacturing,' we are fervently dedicated to cultivating a culture of excellence through the recruitment of high-caliber technical talent. This strategic initiative bolsters our core strengths, ensuring we provide unrivaled service value to our clients. Our growth journey is a testament to our ethos: evolving from inception to industry vanguard through steadfast dedication. Our business strategy centers on innovation, with a steadfast devotion to quality as our survival cornerstone, market reputation as our development path, and management efficiency as our profitability key. We commit to leveraging 'technology as the compass, standardized management, superior quality, and customer satisfaction' as the foundation of our quality and talent management agenda. Our strategic vision is to magnify our market competitiveness, serving China's electric power and grid transmission and distribution sectors with aspirations that are faster, stronger, and higher. Integrity, unmatched quality, exceptional service, and customer satisfaction are the bedrock of our core values. We are unyielding in our pursuit of excellence, continuously innovating to build a brand synonymous with trust. The recognition of our customers propels our ambition. We extend heartfelt gratitude to our loyal customers, both new and enduring, and warmly invite you to join Senhang Technology on a collaborative journey 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.