Product Description



Oil Immersed Series Transformer:
Introducing our S11-M series fully sealed oil immersed power transformer, the epitome of innovation by Zhejiang Chaotai Complete Equipment Co., Ltd. This cutting-edge transformer boasts remarkable features such as low loss, minimal noise, and exceptional efficiency, ensuring significant energy savings and environmental conservation. Unlike conventional models, our state-of-the-art design eliminates the need for an oil conservator. The sophisticated corrugated oil tank expertly adjusts and compensates for oil volume variations through its unique flexibility, keeping the transformer air isolation intact. This innovative approach reduces oil deterioration and insulation aging, significantly enhancing operational reliability and minimizing maintenance requirements during normal operations.
1. Power Capacity: Ranging from 25 to 2500KVA, adaptable to 24KV, 30KV, 33KV, 35KV, 36KV, and beyond as per customer specifications. 2. Voltage Level: Available in 10KV, 11KV, 13.8KV, 15KV, 17.5KV, 20KV, 22KV. 3. Type of Voltage Regulation: Choose between Off-circuit or On-load for optimized performance.
4. Tapping Range: Flexible options including ±5%, ±2x2.5%, and ±4x2.5% to meet diverse requirements.
5. Frequency: Designed for both 50Hz and 60Hz compatibility, offering flexibility for various applications.
6. Phases: Available in both three-phase and single-phase configurations to suit different operational needs.
7. Connection Symbol: Configurations like Dyn11, Yyn0 (or customized upon request) for precise electrical interfacing.
8. Short-circuit Impedance: Designed with standard impedance to ensure stable operation.
9. Altitude and Temperature: Engineered to perform optimally at altitudes not exceeding 1000m and ambient temperatures up to 40°C. If these parameters are outside the standard range, we will adjust the settings to ensure performance remains uncompromised.
10. Standards Compliance: Each unit is crafted in accordance with industry standards to ensure reliability and safety.
Power Capacity: Efficiently handles a range from 25 to 2500KVA, providing versatile power solutions.
Voltage Levels: Offering a wide array of options including 10KV, 11KV, 13.8KV, 15KV, 17.5KV, 20KV, 22KV, 30KV, 33KV, 35KV, ensuring adaptability for diverse needs.
Voltage Level: Comprehensive options for varied operational requirements.
Type of Voltage Regulation: Customizable choices between Off-circuit or On-load regulation to suit operational preferences.
Tapping Range: Adaptable tapping options such as ±5%, ±2x2.5%, ±4x2.5% to cater to specific demands.
Frequency: Compatible with both 50Hz and 60Hz to accommodate a range of applications.
Phases: Three-phase or single-phase availability for diverse electrical systems.
Connection Symbol: Options available for Dyn11, Yyn0 (or custom upon request) to fit specific electrical layouts.
Short-circuit Impedance: Standardized for consistent and reliable performance across applications.
Altitude and Temperature: Designed for optimal operation at altitudes up to 1000m and ambient temperatures not exceeding 40°C.
If standard conditions are not met, we offer parameter adjustments to ensure operational excellence while adhering to industry standards.
Our fully sealed oil immersed power transformer delivers unmatched benefits, including low loss, low noise, and high efficiency. This results in outstanding energy savings and a marked reduction in environmental pollution.
Unlike traditional designs, our fully sealed transformer dispenses with the oil conservator. It uses a unique corrugated oil tank to manage oil volume autonomously, enhancing air isolation. This innovative design helps prevent oil degradation and insulation aging, thereby boosting operational reliability and reducing maintenance during normal operation.
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 innovation in the realm of electrical integration. As a trailblazing high-tech enterprise, we take immense pride in our dedicated R&D, production, and service teams, each boasting over 15 years of unparalleled industry expertise. Our commitment to excellence sets us apart.
Our distinguished portfolio features an array of sophisticated products, including high-voltage solid-state soft starters, capacitor cabinets, versatile high and low voltage switchgear, cutting-edge gas-insulated switchgear, and comprehensive substations. These products demonstrate remarkable versatility, finding applications across a spectrum of fields such as the energy and chemical sectors, metal smelting, power grids, industrial manufacturing, academic and research institutions, healthcare and pharmaceuticals, municipal commerce, water management and hydropower, road traffic management, and both commercial and residential infrastructures.
With an unwavering dedication to technological advancement and a philosophy deeply rooted in 'smart manufacturing,' we are fervently committed to elevating our core competitiveness. By actively integrating high-caliber technical talent, we ensure that our services remain invaluable to our customers while striving to establish ourselves as the pinnacle brand in the industry. Our journey from inception has been marked by relentless progress, transitioning from humble beginnings to a position of unparalleled excellence. We adhere to a business strategy that embodies survival through quality, market-driven growth, reputation-led development, and efficiency through meticulous management. Our unwavering commitment is encapsulated in our guiding principles: 'technology as the beacon, standardized management, superior quality, and unwavering customer satisfaction.' These principles enhance our market competitiveness, enabling us to serve China's electric power and grid transmission and distribution sectors with ever-increasing speed, strength, and elevated targets. Our foundation is built on integrity, with quality as our cornerstone, service as our pinnacle, and customer satisfaction as our timeless mission. We relentlessly pursue excellence, prioritize innovation, and endeavor to forge a brand that is synonymous with trust. It is your recognition that fuels our progress. With heartfelt gratitude to our loyal customers, both new and longstanding, we at Senhang Technology are eager to collaborate, hand in hand, to craft 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.